DUKE ENERGY CORP, 10-K filed on 2/26/2026
Annual Report
v3.25.4
Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2025
Jan. 31, 2026
Jun. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 1-32853    
Entity Registrant Name DUKE ENERGY CORPORATION    
Entity Tax Identification Number 20-2777218    
Entity Incorporation, State or Country Code DE    
Entity Address, Address Line One 525 South Tryon Street    
Entity Address, City or Town Charlotte    
Entity Address, State or Province NC    
Entity Address, Postal Zip Code 28202    
City Area Code 800    
Local Phone Number 488-3853    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 91,703,190,830
Entity Common Stock, Shares Outstanding   777,670,866  
Documents Incorporated by Reference
Portions of the Duke Energy definitive proxy statement for the 2026 Annual Meeting of the Shareholders or an amendment to this Annual Report are incorporated by reference into PART III, Items 10, 11 and 13 hereof.
This combined Form 10-K is filed separately by eight registrants: Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont (collectively the Duke Energy Registrants). Information contained herein relating to any individual registrant is filed by such registrant solely on its own behalf. Each registrant makes no representation as to information relating exclusively to the other registrants.
Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont meet the conditions set forth in General Instructions I(1)(a) and (b) of Form 10-K and are, therefore, filing this Form 10-K with the reduced disclosure format specified in General Instructions I(2) of Form 10-K. 		   
Entity Central Index Key 0001326160    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false    
Common Stock      
Document Information [Line Items]      
Title of 12(b) Security Common Stock, $0.001 par value    
Trading Symbol DUK    
Security Exchange Name NYSE    
Junior Subordinated Debentures 5.625% Coupon Due September 2078      
Document Information [Line Items]      
Title of 12(b) Security 5.625% Junior Subordinated Debentures    
Trading Symbol DUKB    
Security Exchange Name NYSE    
Depositary Share      
Document Information [Line Items]      
Title of 12(b) Security Depositary Shares    
Trading Symbol DUK PR A    
Security Exchange Name NYSE    
3.10% Senior Notes due 2028      
Document Information [Line Items]      
Title of 12(b) Security 3.10% Senior Notes due 2028    
Trading Symbol DUK 28A    
Security Exchange Name NYSE    
3.85% Senior Notes due 2034      
Document Information [Line Items]      
Title of 12(b) Security 3.85% Senior Notes due 2034    
Trading Symbol DUK 34    
Security Exchange Name NYSE    
3.75% Senior Notes due 2031      
Document Information [Line Items]      
Title of 12(b) Security 3.75% Senior Notes due 2031    
Trading Symbol DUK 31A    
Security Exchange Name NYSE    
Duke Energy Carolinas      
Document Information [Line Items]      
Entity File Number 1-4928    
Entity Registrant Name DUKE ENERGY CAROLINAS, LLC    
Entity Tax Identification Number 56-0205520    
Entity Incorporation, State or Country Code NC    
Entity Address, Address Line One 525 South Tryon Street    
Entity Address, City or Town Charlotte    
Entity Address, State or Province NC    
Entity Address, Postal Zip Code 28202    
City Area Code 800    
Local Phone Number 488-3853    
Entity Well-known Seasoned Issuer Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Central Index Key 0000030371    
Progress Energy      
Document Information [Line Items]      
Entity File Number 1-15929    
Entity Registrant Name PROGRESS ENERGY, INC.    
Entity Tax Identification Number 56-2155481    
Entity Incorporation, State or Country Code NC    
Entity Address, Address Line One 411 Fayetteville Street    
Entity Address, City or Town Raleigh    
Entity Address, State or Province NC    
Entity Address, Postal Zip Code 27601    
City Area Code 800    
Local Phone Number 488-3853    
Entity Well-known Seasoned Issuer No    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   100  
Entity Central Index Key 0001094093    
Duke Energy Progress      
Document Information [Line Items]      
Entity File Number 1-3382    
Entity Registrant Name DUKE ENERGY PROGRESS, LLC    
Entity Tax Identification Number 56-0165465    
Entity Incorporation, State or Country Code NC    
Entity Address, Address Line One 411 Fayetteville Street    
Entity Address, City or Town Raleigh    
Entity Address, State or Province NC    
Entity Address, Postal Zip Code 27601    
City Area Code 800    
Local Phone Number 488-3853    
Entity Well-known Seasoned Issuer Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Central Index Key 0000017797    
Duke Energy Florida      
Document Information [Line Items]      
Entity File Number 1-3274    
Entity Registrant Name DUKE ENERGY FLORIDA, LLC    
Entity Tax Identification Number 59-0247770    
Entity Incorporation, State or Country Code FL    
Entity Address, Address Line One 299 First Avenue North    
Entity Address, City or Town St. Petersburg    
Entity Address, State or Province FL    
Entity Address, Postal Zip Code 33701    
City Area Code 800    
Local Phone Number 488-3853    
Entity Well-known Seasoned Issuer Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Central Index Key 0000037637    
Duke Energy Ohio      
Document Information [Line Items]      
Entity File Number 1-1232    
Entity Registrant Name DUKE ENERGY OHIO, INC.    
Entity Tax Identification Number 31-0240030    
Entity Incorporation, State or Country Code OH    
Entity Address, Address Line One 139 East Fourth Street    
Entity Address, City or Town Cincinnati    
Entity Address, State or Province OH    
Entity Address, Postal Zip Code 45202    
City Area Code 800    
Local Phone Number 488-3853    
Entity Well-known Seasoned Issuer Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   89,663,086  
Entity Central Index Key 0000020290    
Duke Energy Indiana      
Document Information [Line Items]      
Entity File Number 1-3543    
Entity Registrant Name DUKE ENERGY INDIANA, LLC    
Entity Tax Identification Number 35-0594457    
Entity Incorporation, State or Country Code IN    
Entity Address, Address Line One 1000 East Main Street    
Entity Address, City or Town Plainfield    
Entity Address, State or Province IN    
Entity Address, Postal Zip Code 46168    
City Area Code 800    
Local Phone Number 488-3853    
Entity Well-known Seasoned Issuer Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Central Index Key 0000081020    
Piedmont      
Document Information [Line Items]      
Entity File Number 1-6196    
Entity Registrant Name PIEDMONT NATURAL GAS COMPANY, INC.    
Entity Tax Identification Number 56-0556998    
Entity Incorporation, State or Country Code NC    
Entity Address, Address Line One 525 South Tryon Street    
Entity Address, City or Town Charlotte    
Entity Address, State or Province NC    
Entity Address, Postal Zip Code 28202    
City Area Code 800    
Local Phone Number 488-3853    
Entity Well-known Seasoned Issuer Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   100  
Entity Central Index Key 0000078460    
v3.25.4
Audit Information
 12 Months Ended
Dec. 31, 2025
Auditor [Line Items]  
Auditor Firm ID 34
Auditor Name Deloitte & Touche LLP
Auditor Location Charlotte, NC
Duke Energy Carolinas  
Auditor [Line Items]  
Auditor Firm ID 34
Auditor Name Deloitte & Touche LLP
Auditor Location Charlotte, NC
Progress Energy  
Auditor [Line Items]  
Auditor Firm ID 34
Auditor Name Deloitte & Touche LLP
Auditor Location Charlotte, NC
Duke Energy Progress  
Auditor [Line Items]  
Auditor Firm ID 34
Auditor Name Deloitte & Touche LLP
Auditor Location Charlotte, NC
Duke Energy Florida  
Auditor [Line Items]  
Auditor Firm ID 34
Auditor Name Deloitte & Touche LLP
Auditor Location Charlotte, NC
Duke Energy Ohio  
Auditor [Line Items]  
Auditor Firm ID 34
Auditor Name Deloitte & Touche LLP
Auditor Location Charlotte, NC
Duke Energy Indiana  
Auditor [Line Items]  
Auditor Firm ID 34
Auditor Name Deloitte & Touche LLP
Auditor Location Charlotte, NC
Piedmont  
Auditor [Line Items]  
Auditor Firm ID 34
Auditor Name Deloitte & Touche LLP
Auditor Location Charlotte, NC
v3.25.4
Condensed Consolidated Statements of Operations - USD ($)
shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Operating Revenues      
Regulated electric $ 29,060 $ 27,787 $ 26,617
Regulated natural gas 2,870 2,252 2,152
Nonregulated electric and other 307 318 291
Total operating revenues 32,237 30,357 29,060
Operating Expenses      
Operation, maintenance and other 6,698 5,389 5,625
Depreciation and amortization 6,324 5,793 5,253
Property and other taxes 1,597 1,466 1,400
Impairment of assets and other charges (4) 38 85
Total operating expenses 23,656 22,457 22,042
Gains on Sales of Other Assets and Other, net 45 26 52
Operating Income 8,626 7,926 7,070
Other Income and Expenses      
Equity in earnings (losses) of unconsolidated affiliates 51 (9) 113
Other income and expenses, net 669 661 598
Total other income and expenses 720 652 711
Interest Expense 3,634 3,384 3,014
Income From Continuing Operations Before Income Taxes 5,712 5,194 4,767
Income Tax Expense From Continuing Operations 642 590 438
Income From Continuing Operations 5,070 4,604 4,329
(Loss) Income from discontinued operations, net of tax 1 10 (1,455)
Net Income 5,071 4,614 2,874
Less: Net Income Attributable to Noncontrolling Interests 103 90 33
Net Income 4,968 4,524 2,841
Less: Preferred Dividends 56 106 106
Less: Preferred Redemption Costs 0 16 0
Net Income Available to Duke Energy Corporation Common Stockholders $ 4,912 $ 4,402 $ 2,735
Income from continuing operations available to Duke Energy Corporation common stockholders      
Basic (usd per share) $ 0 $ 0.01 $ (1.81)
Diluted (usd per share) 6.31 5.70 5.35
Basic (usd per share) 6.31 5.70 5.35
Diluted (usd per share) 0 0.01 (1.81)
Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders      
Basic (usd per share) 0 0.01 (1.81)
Diluted (usd per share) 0 0.01 (1.81)
Net income available to Duke Energy Corporation common stockholders      
Basic (usd per share) 6.31 5.71 3.54
Diluted (usd per share) $ 6.31 $ 5.71 $ 3.54
Weighted average shares outstanding      
Basic (in shares) 777 772 771
Diluted (in shares) 777 772 771
Fuel used in electric generation and purchased power      
Operating Expenses      
Cost of sales $ 8,058 $ 9,206 $ 9,086
Cost of natural gas      
Operating Expenses      
Cost of sales $ 983 $ 565 $ 593
v3.25.4
Condensed Consolidated Statements of Comprehensive Income - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]      
Net income $ 5,071 $ 4,614 $ 2,874
Other Comprehensive Income (Loss), net of tax      
Pension and OPEB adjustments [1] 13 8 (1)
Net unrealized (losses) gains on cash flow hedges [1] (6) 209 63
Reclassification into earnings from cash flow hedges [1] 8 (5) 27
Net unrealized (losses) gains on fair value hedges [1] (50) 24 37
Unrealized gains (losses) on available-for-sale securities [1] 5 (2) 8
Other Comprehensive (Loss) Income, net of tax [1] (30) 234 134
Comprehensive Income 5,041 4,848 3,008
Less: Comprehensive Income Attributable to Noncontrolling Interests 103 90 33
Comprehensive Income 4,938 4,758 2,975
Less: Preferred Dividends 56 106 106
Less: Preferred Redemption Costs 0 16 0
Comprehensive Income Available to Duke Energy Corporation Common Stockholders $ 4,882 $ 4,636 $ 2,869
[1] Net of income tax benefit of approximately $9 million for the year ended December 31, 2025, and net of income tax expense of approximately $70 million and $40 million for the years ended December 31, 2024, and 2023, respectively.
v3.25.4
Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Statement of Comprehensive Income [Abstract]      
Other comprehensive income, tax expense $ 9 $ 70 $ 40
v3.25.4
Condensed Consolidated Balance Sheets - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 245 $ 314
Receivables (net of allowance for doubtful accounts) 16 1,889
Receivables of VIEs (net of allowance for doubtful accounts) 4,214 2,170
Receivable from sales of Commercial Renewables Disposal Groups 0 551
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569 4,496
Regulatory assets 1,934 2,739
Assets held for sale 109 96
Other (includes amounts related to VIEs) 526 695
Total current assets 11,613 12,950
Property, Plant and Equipment    
Cost 190,409 178,737
Accumulated depreciation and amortization (60,450) (57,111)
Net property, plant and equipment 129,959 121,626
Other Noncurrent Assets    
Goodwill 19,010 19,010
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Nuclear decommissioning trust funds 12,889 11,434
Operating lease right-of-use assets, net 1,241 1,148
Investments in equity method unconsolidated affiliates 330 353
Total noncurrent assets held for sale 2,148 2,095
Other (including amounts related to VIEs) 4,167 3,507
Total other noncurrent assets 54,164 51,767
Total Assets 195,736 186,343
Current Liabilities    
Accounts payable 5,223 5,436
Notes payable and commercial paper 2,624 3,584
Taxes accrued 975 851
Interest accrued 922 854
Current maturities of long-term debt 7,104 4,349
Asset retirement obligations 579 650
Regulatory liabilities 1,271 1,421
Liabilities associated with assets held for sale 84 132
Other 2,265 2,080
Total current liabilities 21,047 19,357
Long-Term Debt (includes amounts related to VIEs) 80,108 76,340
Other Noncurrent Liabilities    
Deferred income taxes 12,377 11,424
Total noncurrent asset retirement obligation 9,046 9,338
Total noncurrent regulatory liabilities 15,682 14,521
Operating lease liabilities 1,033 957
Accrued pension and other post-retirement benefit costs 396 434
Investment tax credits 969 894
Liabilities associated with assets held for sale 170 271
Other 1,889 1,551
Total other noncurrent liabilities 41,562 39,390
Commitments and Contingencies
Equity    
Common stock 1 1
Additional paid-in capital 45,614 45,494
Retained earnings 5,056 3,431
Accumulated other comprehensive income 198 228
Total Duke Energy Corporation stockholders' equity 51,842 50,127
Noncontrolling interests 1,177 1,129
Total equity 53,019 51,256
Total Liabilities and Equity 195,736 186,343
Consolidated VIEs    
Current Assets    
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Regulatory assets 204 120
Other (includes amounts related to VIEs) 88 90
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 3,108 1,705
Current Liabilities    
Accounts payable 296 214
Current maturities of long-term debt 118 1,012
Long-Term Debt (includes amounts related to VIEs) 3,308 1,842
Other Noncurrent Liabilities    
Other   27
Series A Preferred Stock    
Equity    
Preferred stock $ 973 $ 973
v3.25.4
Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 194 $ 122
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569 4,496
Regulatory assets 1,934 2,739
Current Assets: Other 526 695
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Other (including amounts related to VIEs) 4,167 3,507
Accounts payable 5,223 5,436
Current maturities of long-term debt 7,104 4,349
Long-Term Debt (includes amounts related to VIEs) $ 80,108 $ 76,340
Common stock shares issued not disclosed true true
Common stock, par value (in usd per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 2,000,000,000 2,000,000,000
Common stock, shares outstanding (in shares) 778,000,000 776,000,000
Other $ 1,889 $ 1,551
Consolidated VIEs    
Allowance for doubtful accounts - receivables of VIEs   85
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Regulatory assets 204 120
Current Assets: Other 88 90
Other Noncurrent Assets: Regulatory assets 3,108 1,705
Accounts payable 296 214
Current maturities of long-term debt 118 1,012
Long-Term Debt (includes amounts related to VIEs) $ 3,308 1,842
Other   $ 27
Series A Preferred Stock    
Preferred stock, par value (in usd per share) $ 0.001 $ 0.001
Preferred stock, depositary shares authorized (in shares) 40,000,000 40,000,000
Preferred stock, depositary shares outstanding (in shares) 40,000,000 40,000,000
v3.25.4
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) $ 5,071 $ 4,614 $ 2,874
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 7,704 6,419 6,084
Equity in (earnings) losses of unconsolidated affiliates (51) 9 (98)
Losses on sales of Commercial Renewables Disposal Groups 4 14 1,725
Equity component of AFUDC (328) (233) (198)
Impairment of assets and other charges (4) 38 85
Deferred income taxes 1,204 987 3
Contributions to qualified pension plans (100) (100) (100)
Payments for asset retirement obligations (509) (545) (632)
(Increase) decrease in      
Net realized and unrealized mark-to-market and hedging transactions 0 (103) (18)
Receivables (187) (23) 443
Inventory (63) (212) (706)
Other current assets 6 885 (267)
Increase (decrease) in      
Accounts payable (821) 1,329 (800)
Taxes accrued 127 32 126
Other current liabilities 52 (55) (80)
Other assets (265) (1,170) 914
Other liabilities 535 468 575
Net cash provided by operating activities 12,330 12,328 9,878
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (14,024) (12,280) (12,604)
Contributions to equity method investments 0 (8) (34)
Return of investment capital 22 25 16
Purchases of debt and equity securities (8,888) (5,703) (3,761)
Proceeds from sales and maturities of debt and equity securities 9,005 5,803 3,824
Proceeds from the sales of other assets 67 49 149
Proceeds from the sales of Commercial Renewables Disposal Groups, net of cash divested 559 0 734
Other (1,079) (1,009) (799)
Net cash used in investing activities (14,338) (13,123) (12,475)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 11,891 8,956 10,028
Proceeds from the issuance of common stock 16 405 8
Redemption of preferred stock 0 (1,000) 0
Payments for the redemption of long-term debt (5,652) (3,357) (4,737)
Proceeds from the issuance of short-term debt with original maturities greater than 90 days 124 557 610
Payments for the redemption of short-term debt with original maturities greater than 90 days (5) (1,096) (125)
Notes payable and commercial paper (1,238) (388) (343)
Contributions from noncontrolling interests   47 278
Dividends paid (3,300) (3,213) (3,244)
Other 114 (52) (124)
Net cash provided by financing activities 1,950 859 2,351
Net (decrease) increase in cash, cash equivalents and restricted cash (58) 64 (246)
Cash, cash equivalents and restricted cash at beginning of period 421 357 603
Cash, cash equivalents and restricted cash at end of period 363 421 357
Supplemental Disclosures:      
Cash paid for interest, net of amount capitalized 3,590 3,284 2,883
Cash (received from) paid for income taxes, net (includes transferable tax credit sale proceeds) (625) (400) 1
Significant non-cash transactions:      
Accrued capital expenditures $ 2,674 $ 1,909 $ 1,908
v3.25.4
Condensed Consolidated Statements of Changes in Equity - USD ($)
shares in Millions, $ in Millions
Total
Series B Preferred Stock
Preferred Stock
Preferred Stock
Series B Preferred Stock
Total Equity
Total Equity
Series B Preferred Stock
Common Stock
Additional Paid-in Capital
Retained Earnings
Net Gains (Losses) on Hedges
 [1]
Net Unrealized Gains (Losses) on Available-for-Sale Securities
Pension and OPEB Adjustments
Noncontrolling Interests
Beginning Balance (in shares) at Dec. 31, 2022             770            
Beginning Balance (Parent) at Dec. 31, 2022 $ 51,853   $ 1,962   $ 49,322   $ 1 $ 44,862 $ 2,637 $ (29) $ (23) $ (88) $ 2,531
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Net income [2] 2,768       2,735       2,735       33
Other comprehensive income (loss) 134 [3]       134         127 8 (1) 0
Common stock issuances, including dividend reinvestment and employee benefits (in shares)             1            
Common stock issuances, including dividend reinvestment and employee benefits 78       78     78          
Common stock dividends (3,138)       (3,138)       (3,138)        
Sale of NCI (3)       (13)     (13)         10
Contribution from NCI [4] 278                       278
Distributions to NCI in subsidiaries (59)                       (59)
Sale of Commercial Renewables Disposal Groups (1,722)                       (1,722)
Other (2)       (6)     (7) 1       4
Beginning Balance (in shares) at Dec. 31, 2023             771            
Ending Balance (Parent) at Dec. 31, 2023 50,187   1,962   49,112   $ 1 44,920 2,235 98 (15) (89) 1,075
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Net income [2] 4,492       4,402       4,402       90
Other comprehensive income (loss) 234 [3]       234         228 (2) 8 0
Common stock issuances, including dividend reinvestment and employee benefits (in shares)             5            
Common stock issuances, including dividend reinvestment and employee benefits 574       574     574          
Preferred stock, Series B, redemption   $ (989)   $ (989)   $ (989)              
Common stock dividends (3,204)       (3,204)       (3,204)        
Contribution from NCI 47                       47
Distributions to NCI in subsidiaries (32)                       (32)
Sale of Commercial Renewables Disposal Groups (51)                       (51)
Other $ (2)       (2)       (2)       0
Beginning Balance (in shares) at Dec. 31, 2024 776           776            
Ending Balance (Parent) at Dec. 31, 2024 $ 51,256   973   50,127   $ 1 45,494 3,431 326 (17) (81) 1,129
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Net income [2] 5,015       4,912       4,912       103
Other comprehensive income (loss) (30) [3]       (30)         (48) 5 13  
Common stock issuances, including dividend reinvestment and employee benefits (in shares)             2            
Common stock issuances, including dividend reinvestment and employee benefits 120       120     120          
Common stock dividends (3,290)       (3,290)       (3,290)        
Distributions to NCI in subsidiaries (31)                       (31)
Sale of Commercial Renewables Disposal Groups (18)                       (18)
Other $ (3)       3       3       (6)
Beginning Balance (in shares) at Dec. 31, 2025 778           778            
Ending Balance (Parent) at Dec. 31, 2025 $ 53,019   $ 973   $ 51,842   $ 1 $ 45,614 $ 5,056 $ 278 $ (12) $ (68) $ 1,177
[1] See Duke Energy Consolidated Statements of Comprehensive Income for detailed activity related to Cash Flow and Fair Value Hedges.
[2] Net income available to Duke Energy Corporation Common Stockholders reflects preferred dividends and, for 2024, the $16 million preferred redemption costs.
[3] Net of income tax benefit of approximately $9 million for the year ended December 31, 2025, and net of income tax expense of approximately $70 million and $40 million for the years ended December 31, 2024, and 2023, respectively.
[4] Relates to tax equity financing activity in the Commercial Renewables Disposal Groups.
v3.25.4
Condensed Consolidated Statements of Changes in Equity (Parenthetical) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Statement of Stockholders' Equity [Abstract]      
Less: Preferred Redemption Costs $ 0 $ 16 $ 0
v3.25.4
Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Carolinas - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Operating Revenues $ 32,237 $ 30,357 $ 29,060
Operating Expenses      
Operation, maintenance and other 6,698 5,389 5,625
Depreciation and amortization 6,324 5,793 5,253
Property and other taxes 1,597 1,466 1,400
Impairment of assets and other charges (4) 38 85
Total operating expenses 23,656 22,457 22,042
Gains on Sales of Other Assets and Other, net 45 26 52
Operating Income 8,626 7,926 7,070
Other Income and Expenses, net 720 652 711
Interest Expense 3,634 3,384 3,014
Income From Continuing Operations Before Income Taxes 5,712 5,194 4,767
Income Tax Expense From Continuing Operations 642 590 438
Net Income 4,968 4,524 2,841
Comprehensive Income 4,938 4,758 2,975
Duke Energy Carolinas      
Operating Revenues 9,713 9,718 8,288
Operating Expenses      
Cost of sales 2,649 3,251 2,524
Operation, maintenance and other 2,002 1,740 1,774
Depreciation and amortization 1,903 1,768 1,593
Property and other taxes 349 346 320
Impairment of assets and other charges (11) 31 44
Total operating expenses 6,892 7,136 6,255
Gains on Sales of Other Assets and Other, net 6 2 26
Operating Income 2,827 2,584 2,059
Other Income and Expenses, net 258 247 238
Interest Expense 783 722 686
Income From Continuing Operations Before Income Taxes 2,302 2,109 1,611
Income Tax Expense From Continuing Operations 194 226 141
Net Income 2,108 1,883 1,470
Other Comprehensive Income, net of tax 1    
Comprehensive Income $ 2,109 $ 1,883 $ 1,470
v3.25.4
Condensed Consolidated Balance Sheets - Duke Energy Carolinas - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 245 $ 314
Receivables of VIEs (net of allowance for doubtful accounts) 4,214 2,170
Receivables (net of allowance for doubtful accounts) 16 1,889
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569 4,496
Regulatory assets 1,934 2,739
Other (includes amounts related to VIEs) 526 695
Total current assets 11,613 12,950
Property, Plant and Equipment    
Cost 190,409 178,737
Accumulated depreciation and amortization (60,450) (57,111)
Net property, plant and equipment 129,959 121,626
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Nuclear decommissioning trust funds 12,889 11,434
Operating lease right-of-use assets, net 1,241 1,148
Other (including amounts related to VIEs) 4,167 3,507
Total other noncurrent assets 54,164 51,767
Total Assets 195,736 186,343
Current Liabilities    
Accounts payable 5,223 5,436
Taxes accrued 975 851
Interest accrued 922 854
Current maturities of long-term debt 7,104 4,349
Asset retirement obligations 579 650
Regulatory liabilities 1,271 1,421
Other 2,265 2,080
Total current liabilities 21,047 19,357
Long-Term Debt (includes amounts related to VIEs) 80,108 76,340
Other Noncurrent Liabilities    
Deferred income taxes 12,377 11,424
Total noncurrent asset retirement obligation 9,046 9,338
Total noncurrent regulatory liabilities 15,682 14,521
Operating lease liabilities 1,033 957
Accrued pension and other post-retirement benefit costs 396 434
Investment tax credits 969 894
Other 1,889 1,551
Total other noncurrent liabilities 41,562 39,390
Commitments and Contingencies
Equity    
Accumulated other comprehensive income 198 228
Total Liabilities and Equity 195,736 186,343
Consolidated VIEs    
Current Assets    
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Regulatory assets 204 120
Other (includes amounts related to VIEs) 88 90
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 3,108 1,705
Current Liabilities    
Accounts payable 296 214
Current maturities of long-term debt 118 1,012
Long-Term Debt (includes amounts related to VIEs) 3,308 1,842
Other Noncurrent Liabilities    
Other   27
Duke Energy Carolinas    
Current Assets    
Cash and cash equivalents 3 6
Receivables of VIEs (net of allowance for doubtful accounts) 1,343 266
Receivables (net of allowance for doubtful accounts) 4 1,054
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 1,530 1,536
Regulatory assets 730 685
Other (includes amounts related to VIEs) 75 52
Total current assets 4,085 3,821
Property, Plant and Equipment    
Cost 62,513 58,382
Accumulated depreciation and amortization (20,658) (19,090)
Net property, plant and equipment 41,855 39,292
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 4,502 4,199
Nuclear decommissioning trust funds 7,338 6,468
Operating lease right-of-use assets, net 91 98
Other (including amounts related to VIEs) 1,304 1,127
Total other noncurrent assets 13,235 11,892
Total Assets 59,175 55,005
Current Liabilities    
Accounts payable 1,670 1,809
Taxes accrued 306 627
Interest accrued 214 201
Current maturities of long-term debt 629 521
Asset retirement obligations 245 247
Regulatory liabilities 569 618
Other 621 541
Total current liabilities 4,640 4,805
Long-Term Debt (includes amounts related to VIEs) 17,848 16,669
Other Noncurrent Liabilities    
Deferred income taxes 4,191 4,052
Total noncurrent asset retirement obligation 3,597 3,743
Total noncurrent regulatory liabilities 7,609 6,592
Operating lease liabilities 79 87
Accrued pension and other post-retirement benefit costs 24 24
Investment tax credits 345 317
Other 802 576
Total other noncurrent liabilities 16,647 15,391
Commitments and Contingencies
Equity    
Member's equity 19,745 17,846
Accumulated other comprehensive income (5) (6)
Total member's equity 19,740 17,840
Total Liabilities and Equity 59,175 55,005
Duke Energy Carolinas | Consolidated VIEs    
Current Assets    
Regulatory assets 72 12
Other (includes amounts related to VIEs) 12 9
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 1,257 189
Current Liabilities    
Current maturities of long-term debt 16 510
Long-Term Debt (includes amounts related to VIEs) 1,316 198
Other Noncurrent Liabilities    
Other   15
Duke Energy Carolinas | Affiliated entity    
Current Assets    
Receivables of VIEs (net of allowance for doubtful accounts) 331 157
Notes receivable from affiliated companies 69 65
Current Liabilities    
Accounts payable 386 241
Long-Term Debt (includes amounts related to VIEs) $ 300 $ 300
v3.25.4
Condensed Consolidated Balance Sheets - Duke Energy Carolinas (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 194 $ 122
Regulatory assets 1,934 2,739
Current Assets: Other 526 695
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Current maturities of long-term debt 7,104 4,349
Long-Term Debt (includes amounts related to VIEs) 80,108 76,340
Consolidated VIEs    
Allowance for doubtful accounts - receivables of VIEs   85
Regulatory assets 204 120
Current Assets: Other 88 90
Other Noncurrent Assets: Regulatory assets 3,108 1,705
Current maturities of long-term debt 118 1,012
Long-Term Debt (includes amounts related to VIEs) 3,308 1,842
Duke Energy Carolinas    
Allowance for doubtful accounts - receivables 55 18
Regulatory assets 730 685
Current Assets: Other 75 52
Other Noncurrent Assets: Regulatory assets 4,502 4,199
Current maturities of long-term debt 629 521
Long-Term Debt (includes amounts related to VIEs) 17,848 16,669
Duke Energy Carolinas | Consolidated VIEs    
Allowance for doubtful accounts - receivables of VIEs   51
Regulatory assets 72 12
Current Assets: Other 12 9
Other Noncurrent Assets: Regulatory assets 1,257 189
Current maturities of long-term debt 16 510
Long-Term Debt (includes amounts related to VIEs) $ 1,316 $ 198
v3.25.4
Condensed Consolidated Statements of Cash Flows - Duke Energy Carolinas - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) $ 5,071 $ 4,614 $ 2,874
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 7,704 6,419 6,084
Equity component of AFUDC (328) (233) (198)
Gains on sales of other assets (45) (26) (52)
Impairment of assets and other charges (4) 38 85
Deferred income taxes 1,204 987 3
Contributions to qualified pension plans (100) (100) (100)
Payments for asset retirement obligations (509) (545) (632)
(Increase) decrease in      
Net realized and unrealized mark-to-market and hedging transactions 0 (103) (18)
Receivables (187) (23) 443
Inventory (63) (212) (706)
Other current assets 6 885 (267)
Increase (decrease) in      
Accounts payable (821) 1,329 (800)
Taxes accrued 127 32 126
Other current liabilities 52 (55) (80)
Other assets (265) (1,170) 914
Other liabilities 535 468 575
Net cash provided by operating activities 12,330 12,328 9,878
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (14,024) (12,280) (12,604)
Purchases of debt and equity securities (8,888) (5,703) (3,761)
Proceeds from sales and maturities of debt and equity securities 9,005 5,803 3,824
Other (1,079) (1,009) (799)
Net cash used in investing activities (14,338) (13,123) (12,475)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 11,891 8,956 10,028
Payments for the redemption of long-term debt (5,652) (3,357) (4,737)
Other 114 (52) (124)
Net cash provided by financing activities 1,950 859 2,351
Net (decrease) increase in cash, cash equivalents and restricted cash (58) 64 (246)
Cash, cash equivalents and restricted cash at beginning of period 421 357 603
Cash, cash equivalents and restricted cash at end of period 363 421 357
Supplemental Disclosures:      
Cash paid for interest, net of amount capitalized 3,590 3,284 2,883
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) (625) (400) 1
Significant non-cash transactions:      
Accrued capital expenditures 2,674 1,909 1,908
Duke Energy Carolinas      
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) 2,108 1,883 1,470
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 2,169 2,033 1,845
Equity component of AFUDC (144) (113) (91)
Gains on sales of other assets (6) (2) (26)
Impairment of assets and other charges (11) 31 44
Deferred income taxes 442 (28) (53)
Contributions to qualified pension plans (27) (26) (26)
Payments for asset retirement obligations (197) (180) (210)
(Increase) decrease in      
Receivables (26) (49) 22
Receivables from affiliated companies (174) 46 187
Inventory 2 (60) (320)
Other current assets (87) 928 (495)
Increase (decrease) in      
Accounts payable (261) 476 (447)
Accounts payable to affiliated companies 145 46 (14)
Taxes accrued (321) 346 64
Other current liabilities 94 (74) 32
Other assets (135) (556) 703
Other liabilities 50 (164) 100
Net cash provided by operating activities 3,621 4,537 2,785
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (4,477) (3,966) (3,733)
Purchases of debt and equity securities (4,734) (2,775) (2,025)
Proceeds from sales and maturities of debt and equity securities 4,734 2,775 2,025
Proceeds from the sales of other assets     30
Notes receivable from affiliated companies (4) (65)  
Other (388) (358) (288)
Net cash used in investing activities (4,869) (4,389) (3,991)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 2,495 1,487 2,780
Payments for the redemption of long-term debt (1,224) (19) (1,042)
Notes payable to affiliated companies 0 (668) (565)
Distributions to parent (200) (950)  
Other 183 (1) (1)
Net cash provided by financing activities 1,254 (151) 1,172
Net (decrease) increase in cash, cash equivalents and restricted cash 6 (3) (34)
Cash, cash equivalents and restricted cash at beginning of period 16 19 53
Cash, cash equivalents and restricted cash at end of period 22 16 19
Supplemental Disclosures:      
Cash paid for interest, net of amount capitalized 758 683 528
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) 85 (85) 151
Significant non-cash transactions:      
Accrued capital expenditures $ 997 $ 802 $ 613
v3.25.4
Condensed Consolidated Statements of Changes in Equity - Duke Energy Carolinas - USD ($)
$ in Millions
Total
Duke Energy Carolinas
Duke Energy Carolinas
Member's Equity
Duke Energy Carolinas
Net Losses (Gains) on Cash Flow Hedges
Beginning balance at Dec. 31, 2022   $ 15,442 $ 15,448 $ (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) $ 2,841 1,470 1,470  
Dividends to parent (3,138)      
Other (2) (5) (5)  
Ending balance at Dec. 31, 2023   16,907 16,913 (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) 4,524 1,883 1,883  
Dividends to parent (3,204) (950) (950)  
Other (2)      
Ending balance at Dec. 31, 2024   17,840 17,846 (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) 4,968 2,108 2,108  
Other comprehensive income (loss)   1   1
Dividends to parent (3,290) (200) (200)  
Other $ (3) (9) (9)  
Ending balance at Dec. 31, 2025   $ 19,740 $ 19,745 $ (5)
v3.25.4
Condensed Consolidated Statements of Operations and Comprehensive Income - Progress Energy - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Operating Revenues $ 32,237 $ 30,357 $ 29,060
Operating Expenses      
Operation, maintenance and other 6,698 5,389 5,625
Depreciation and amortization 6,324 5,793 5,253
Property and other taxes 1,597 1,466 1,400
Impairment of assets and other charges (4) 38 85
Total operating expenses 23,656 22,457 22,042
Gains on Sales of Other Assets and Other, net 45 26 52
Operating Income 8,626 7,926 7,070
Other Income and Expenses, net 720 652 711
Interest Expense 3,634 3,384 3,014
Income From Continuing Operations Before Income Taxes 5,712 5,194 4,767
Income Tax Expense From Continuing Operations 642 590 438
Net Income 4,968 4,524 2,841
Comprehensive Income 4,938 4,758 2,975
Progress Energy      
Operating Revenues 14,509 13,633 13,544
Operating Expenses      
Cost of sales 4,267 4,755 5,026
Operation, maintenance and other 3,335 2,463 2,636
Depreciation and amortization 2,543 2,393 2,151
Property and other taxes 657 617 644
Impairment of assets and other charges 2 6 28
Total operating expenses 10,804 10,234 10,485
Gains on Sales of Other Assets and Other, net 27 27 27
Operating Income 3,732 3,426 3,086
Other Income and Expenses, net 287 235 201
Interest Expense 1,119 1,064 954
Income From Continuing Operations Before Income Taxes 2,900 2,597 2,333
Income Tax Expense From Continuing Operations 485 426 377
Net Income 2,415 2,171 1,956
Pension and OPEB adjustments 0 0 (2)
Unrealized gains (losses) on available-for-sale securities 0   3
Other Comprehensive Income, net of tax 0 0 1
Comprehensive Income $ 2,415 $ 2,171 $ 1,957
v3.25.4
Condensed Consolidated Balance Sheets - Progress Energy - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 245 $ 314
Receivables of VIEs (net of allowance for doubtful accounts) 4,214 2,170
Receivables (net of allowance for doubtful accounts) 16 1,889
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569 4,496
Regulatory assets 1,934 2,739
Other (includes amounts related to VIEs) 526 695
Total current assets 11,613 12,950
Property, Plant and Equipment    
Cost 190,409 178,737
Accumulated depreciation and amortization (60,450) (57,111)
Net property, plant and equipment 129,959 121,626
Other Noncurrent Assets    
Goodwill 19,010 19,010
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Nuclear decommissioning trust funds 12,889 11,434
Operating lease right-of-use assets, net 1,241 1,148
Other (including amounts related to VIEs) 4,167 3,507
Total other noncurrent assets 54,164 51,767
Total Assets 195,736 186,343
Current Liabilities    
Accounts payable 5,223 5,436
Taxes accrued 975 851
Interest accrued 922 854
Current maturities of long-term debt 7,104 4,349
Asset retirement obligations 579 650
Regulatory liabilities 1,271 1,421
Other 2,265 2,080
Total current liabilities 21,047 19,357
Long-Term Debt (includes amounts related to VIEs) 80,108 76,340
Other Noncurrent Liabilities    
Deferred income taxes 12,377 11,424
Total noncurrent asset retirement obligation 9,046 9,338
Total noncurrent regulatory liabilities 15,682 14,521
Operating lease liabilities 1,033 957
Accrued pension and other post-retirement benefit costs 396 434
Investment tax credits 969 894
Other 1,889 1,551
Total other noncurrent liabilities 41,562 39,390
Commitments and Contingencies
Equity    
Common stock 1 1
Additional paid-in capital 45,614 45,494
Retained earnings 5,056 3,431
Accumulated other comprehensive income 198 228
Total Duke Energy Corporation stockholders' equity 51,842 50,127
Noncontrolling interests 1,177 1,129
Total equity 53,019 51,256
Total Liabilities and Equity 195,736 186,343
Consolidated VIEs    
Current Assets    
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Regulatory assets 204 120
Other (includes amounts related to VIEs) 88 90
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 3,108 1,705
Current Liabilities    
Accounts payable 296 214
Current maturities of long-term debt 118 1,012
Long-Term Debt (includes amounts related to VIEs) 3,308 1,842
Other Noncurrent Liabilities    
Other   27
Progress Energy    
Current Assets    
Cash and cash equivalents 54 73
Receivables of VIEs (net of allowance for doubtful accounts) 1,538 707
Receivables (net of allowance for doubtful accounts) 12 835
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 2,210 2,086
Regulatory assets 753 1,647
Other (includes amounts related to VIEs) 150 182
Total current assets 5,049 5,555
Property, Plant and Equipment    
Cost 78,347 72,560
Accumulated depreciation and amortization (25,425) (23,586)
Net property, plant and equipment 52,922 48,974
Other Noncurrent Assets    
Goodwill 3,655 3,655
Other Noncurrent Assets: Regulatory assets 6,650 6,618
Nuclear decommissioning trust funds 5,550 4,967
Operating lease right-of-use assets, net 607 625
Other (including amounts related to VIEs) 1,405 1,242
Total other noncurrent assets 17,867 17,107
Total Assets 75,838 71,636
Current Liabilities    
Accounts payable 1,679 2,170
Taxes accrued 222 312
Interest accrued 256 232
Current maturities of long-term debt 722 1,517
Asset retirement obligations 196 231
Regulatory liabilities 350 522
Other 758 792
Total current liabilities 4,754 7,360
Long-Term Debt (includes amounts related to VIEs) 25,976 22,829
Other Noncurrent Liabilities    
Deferred income taxes 5,576 5,263
Total noncurrent asset retirement obligation 4,290 4,317
Total noncurrent regulatory liabilities 5,601 5,258
Operating lease liabilities 552 557
Accrued pension and other post-retirement benefit costs 247 254
Investment tax credits 434 385
Other 491 357
Total other noncurrent liabilities 17,191 16,391
Commitments and Contingencies
Equity    
Common stock 0 0
Additional paid-in capital 12,278 11,830
Retained earnings 15,499 13,086
Accumulated other comprehensive income (10) (10)
Total Duke Energy Corporation stockholders' equity 27,767 24,906
Total Liabilities and Equity 75,838 71,636
Progress Energy | Consolidated VIEs    
Current Assets    
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Regulatory assets 132 108
Other (includes amounts related to VIEs) 72 75
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 1,851 1,516
Current Liabilities    
Accounts payable 289 208
Current maturities of long-term debt 102 502
Long-Term Debt (includes amounts related to VIEs) 1,936 1,582
Other Noncurrent Liabilities    
Other   11
Progress Energy | Affiliated entity    
Current Assets    
Receivables of VIEs (net of allowance for doubtful accounts) 81 25
Notes receivable from affiliated companies 251 0
Current Liabilities    
Accounts payable 571 507
Notes payable to affiliated companies   1,077
Long-Term Debt (includes amounts related to VIEs) $ 150 $ 150
v3.25.4
Condensed Consolidated Balance Sheets - Progress Energy (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 194 $ 122
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569 4,496
Regulatory assets 1,934 2,739
Accounts payable 5,223 5,436
Current Assets: Other 526 695
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Current maturities of long-term debt 7,104 4,349
Long-Term Debt (includes amounts related to VIEs) 80,108 76,340
Other $ 1,889 $ 1,551
Common stock, par value (in usd per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 2,000,000,000 2,000,000,000
Common stock, shares outstanding (in shares) 778,000,000 776,000,000
Consolidated VIEs    
Allowance for doubtful accounts - receivables of VIEs   $ 85
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) $ 669 494
Regulatory assets 204 120
Accounts payable 296 214
Current Assets: Other 88 90
Other Noncurrent Assets: Regulatory assets 3,108 1,705
Current maturities of long-term debt 118 1,012
Long-Term Debt (includes amounts related to VIEs) 3,308 1,842
Other   27
Progress Energy    
Allowance for doubtful accounts - receivables 65 39
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 2,210 2,086
Regulatory assets 753 1,647
Accounts payable 1,679 2,170
Current Assets: Other 150 182
Other Noncurrent Assets: Regulatory assets 6,650 6,618
Current maturities of long-term debt 722 1,517
Long-Term Debt (includes amounts related to VIEs) 25,976 22,829
Other $ 491 $ 357
Common stock, par value (in usd per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 100 100
Common stock, shares outstanding (in shares) 100 100
Progress Energy | Affiliated entity    
Accounts payable $ 571 $ 507
Long-Term Debt (includes amounts related to VIEs) 150 150
Progress Energy | Consolidated VIEs    
Allowance for doubtful accounts - receivables of VIEs   34
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Regulatory assets 132 108
Accounts payable 289 208
Current Assets: Other 72 75
Other Noncurrent Assets: Regulatory assets 1,851 1,516
Current maturities of long-term debt 102 502
Long-Term Debt (includes amounts related to VIEs) $ 1,936 1,582
Other   $ 11
v3.25.4
Condensed Consolidated Statements of Cash Flows - Progress Energy - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income $ 5,071 $ 4,614 $ 2,874
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 7,704 6,419 6,084
Equity component of AFUDC (328) (233) (198)
Gains on sales of other assets (45) (26) (52)
Deferred income taxes 1,204 987 3
Contributions to qualified pension plans (100) (100) (100)
Payments for asset retirement obligations (509) (545) (632)
(Increase) decrease in      
Receivables (187) (23) 443
Inventory (63) (212) (706)
Other current assets 6 885 (267)
Increase (decrease) in      
Accounts payable (821) 1,329 (800)
Taxes accrued 127 32 126
Other current liabilities 52 (55) (80)
Other assets (265) (1,170) 914
Other liabilities 535 468 575
Net cash provided by operating activities 12,330 12,328 9,878
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (14,024) (12,280) (12,604)
Purchases of debt and equity securities (8,888) (5,703) (3,761)
Proceeds from sales and maturities of debt and equity securities 9,005 5,803 3,824
Proceeds from the sales of other assets 67 49 149
Other (1,079) (1,009) (799)
Net cash used in investing activities (14,338) (13,123) (12,475)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 11,891 8,956 10,028
Payments for the redemption of long-term debt (5,652) (3,357) (4,737)
Other 114 (52) (124)
Net cash provided by financing activities 1,950 859 2,351
Net (decrease) increase in cash, cash equivalents and restricted cash (58) 64 (246)
Cash, cash equivalents and restricted cash at beginning of period 421 357 603
Cash, cash equivalents and restricted cash at end of period 363 421 357
Supplemental Disclosures:      
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) (625) (400) 1
Cash paid for interest, net of amount capitalized 3,590 3,284 2,883
Significant non-cash transactions:      
Accrued capital expenditures 2,674 1,909 1,908
Progress Energy      
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income 2,415 2,171 1,956
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 3,666 2,761 2,721
Equity component of AFUDC (117) (74) (67)
Gains on sales of other assets (27) (27) (27)
Deferred income taxes 330 33 (120)
Contributions to qualified pension plans (23) (23) (22)
Payments for asset retirement obligations (214) (279) (329)
(Increase) decrease in      
Receivables 7 25 21
Receivables from affiliated companies (56) 65 (68)
Inventory (112) (172) (322)
Other current assets 92 81 287
Increase (decrease) in      
Accounts payable (776) 867 (266)
Accounts payable to affiliated companies 121 43 (248)
Taxes accrued (82) 49 124
Other current liabilities (79) 164 9
Other assets (113) (723) 357
Other liabilities 84 92 84
Net cash provided by operating activities 5,118 5,059 4,118
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (6,125) (5,252) (4,917)
Purchases of debt and equity securities (3,998) (2,703) (1,590)
Proceeds from sales and maturities of debt and equity securities 4,044 2,809 1,663
Notes receivable from affiliated companies (251) 0 0
Other (421) (463) (329)
Net cash used in investing activities (6,751) (5,609) (5,173)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 4,420 1,134 2,555
Payments for the redemption of long-term debt (2,121) (467) (1,248)
Notes payable to affiliated companies (1,077) 34 200
Contributions from parent 400 0 0
Dividends to parent 0 (125) (500)
Other (10) (1) (1)
Net cash provided by financing activities 1,612 575 1,006
Net (decrease) increase in cash, cash equivalents and restricted cash (21) 25 (49)
Cash, cash equivalents and restricted cash at beginning of period 160 135 184
Cash, cash equivalents and restricted cash at end of period 139 160 135
Supplemental Disclosures:      
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) 265 315 310
Cash paid for interest, net of amount capitalized 1,123 1,078 954
Significant non-cash transactions:      
Accrued capital expenditures $ 1,116 $ 745 $ 806
v3.25.4
Condensed Consolidated Statements of Changes in Equity - Progress Energy - USD ($)
$ in Millions
Total
Total Equity
Additional Paid-in Capital
Retained Earnings
Net Unrealized Gains (Losses) on Available-for-Sale Securities
Pension and OPEB Adjustments
Noncontrolling Interests
Progress Energy
Progress Energy
Additional Paid-in Capital
Progress Energy
Retained Earnings
Progress Energy
Net Gains (Losses) on Cash Flow Hedges
Progress Energy
Net Unrealized Gains (Losses) on Available-for-Sale Securities
Progress Energy
Pension and OPEB Adjustments
Beginning Balance (Attributable to Parent) at Dec. 31, 2022               $ 21,406 $ 11,832 $ 9,585 $ (1) $ (8) $ (2)
Beginning Balance (Parent) at Dec. 31, 2022 $ 51,853 $ 49,322 $ 44,862 $ 2,637 $ (23) $ (88) $ 2,531            
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Net income 2,841             1,956   1,956      
Other comprehensive income (loss)               1       3 (2)
Distributions to noncontrolling interests (59)           (59)            
Dividends to parent (3,138) (3,138)   (3,138)       (500) 0 (500)      
Other (2) (6) (7) 1     4 (3) (2) (1)      
Ending Balance (Attributable to Parent) at Dec. 31, 2023               22,860 11,830 11,040 (1) (5) (4)
Ending Balance (Parent) at Dec. 31, 2023 50,187 49,112 44,920 2,235 (15) (89) 1,075            
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Net income 4,524             2,171   2,171      
Other comprehensive income (loss)               0          
Distributions to noncontrolling interests (32)           (32)            
Dividends to parent (3,204) (3,204)   (3,204)       (125)   (125)      
Other (2) (2)   (2)     0            
Ending Balance (Attributable to Parent) at Dec. 31, 2024 50,127             24,906 11,830 13,086 (1) (5) (4)
Ending Balance (Parent) at Dec. 31, 2024 51,256 50,127 45,494 3,431 (17) (81) 1,129            
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Net income 4,968             2,415   2,415      
Other comprehensive income (loss)               0          
Distributions to noncontrolling interests (31)           (31)            
Dividends to parent (3,290) (3,290)   (3,290)                  
Distributions to parent               (9) (9)        
Equitization of certain intercompany balances with affiliates               55 57 (2)      
Contribution from parent               400 400        
Other (3) 3   3     (6)            
Ending Balance (Attributable to Parent) at Dec. 31, 2025 51,842             $ 27,767 $ 12,278 $ 15,499 $ (1) $ (5) $ (4)
Ending Balance (Parent) at Dec. 31, 2025 $ 53,019 $ 51,842 $ 45,614 $ 5,056 $ (12) $ (68) $ 1,177            
v3.25.4
Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Progress - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Operating Revenues $ 32,237 $ 30,357 $ 29,060
Operating Expenses      
Operation, maintenance and other 6,698 5,389 5,625
Depreciation and amortization 6,324 5,793 5,253
Property and other taxes 1,597 1,466 1,400
Impairment of assets and other charges (4) 38 85
Total operating expenses 23,656 22,457 22,042
Gains on Sales of Other Assets and Other, net 45 26 52
Operating Income 8,626 7,926 7,070
Other Income and Expenses, net 720 652 711
Interest Expense 3,634 3,384 3,014
Income From Continuing Operations Before Income Taxes 5,712 5,194 4,767
Income Tax Expense 642 590 438
Comprehensive Income 4,938 4,758 2,975
Net Income 4,968 4,524 2,841
Duke Energy Progress      
Operating Revenues 7,386 7,017 6,488
Operating Expenses      
Cost of sales 2,518 2,409 2,203
Operation, maintenance and other 1,455 1,388 1,379
Depreciation and amortization 1,406 1,336 1,266
Property and other taxes 172 177 164
Impairment of assets and other charges 2 6 29
Total operating expenses 5,553 5,316 5,041
Gains on Sales of Other Assets and Other, net 2 2 3
Operating Income 1,835 1,703 1,450
Other Income and Expenses, net 196 143 124
Interest Expense 526 493 427
Income From Continuing Operations Before Income Taxes 1,505 1,353 1,147
Income Tax Expense 223 189 149
Comprehensive Income 1,282 1,164 998
Net Income $ 1,282 $ 1,164 $ 998
v3.25.4
Condensed Consolidated Balance Sheets - Duke Energy Progress - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 245 $ 314
Receivables of VIEs (net of allowance for doubtful accounts) 4,214 2,170
Receivables (net of allowance for doubtful accounts) 16 1,889
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569 4,496
Regulatory assets 1,934 2,739
Other (includes amounts related to VIEs) 526 695
Total current assets 11,613 12,950
Property, Plant and Equipment    
Cost 190,409 178,737
Accumulated depreciation and amortization (60,450) (57,111)
Net property, plant and equipment 129,959 121,626
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Nuclear decommissioning trust funds 12,889 11,434
Operating lease right-of-use assets, net 1,241 1,148
Other (including amounts related to VIEs) 4,167 3,507
Total other noncurrent assets 54,164 51,767
Total Assets 195,736 186,343
Current Liabilities    
Accounts payable 5,223 5,436
Taxes accrued 975 851
Interest accrued 922 854
Current maturities of long-term debt 7,104 4,349
Asset retirement obligations 579 650
Regulatory liabilities 1,271 1,421
Other 2,265 2,080
Total current liabilities 21,047 19,357
Long-Term Debt (includes amounts related to VIEs) 80,108 76,340
Other Noncurrent Liabilities    
Deferred income taxes 12,377 11,424
Total noncurrent asset retirement obligation 9,046 9,338
Total noncurrent regulatory liabilities 15,682 14,521
Operating lease liabilities 1,033 957
Accrued pension and other post-retirement benefit costs 396 434
Investment tax credits 969 894
Other 1,889 1,551
Total other noncurrent liabilities 41,562 39,390
Commitments and Contingencies
Equity    
Total Liabilities and Equity 195,736 186,343
Consolidated VIEs    
Current Assets    
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Regulatory assets 204 120
Other (includes amounts related to VIEs) 88 90
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 3,108 1,705
Current Liabilities    
Accounts payable 296 214
Current maturities of long-term debt 118 1,012
Long-Term Debt (includes amounts related to VIEs) 3,308 1,842
Other Noncurrent Liabilities    
Other   27
Duke Energy Progress    
Current Assets    
Cash and cash equivalents 16 24
Receivables of VIEs (net of allowance for doubtful accounts) 943 160
Receivables (net of allowance for doubtful accounts) 9 835
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 1,363 1,341
Regulatory assets 652 626
Other (includes amounts related to VIEs) 95 104
Total current assets 3,368 3,100
Property, Plant and Equipment    
Cost 45,175 42,060
Accumulated depreciation and amortization (16,980) (15,930)
Net property, plant and equipment 28,195 26,130
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 4,543 4,555
Nuclear decommissioning trust funds 5,254 4,636
Operating lease right-of-use assets, net 386 348
Other (including amounts related to VIEs) 781 724
Total other noncurrent assets 10,964 10,263
Total Assets 42,527 39,493
Current Liabilities    
Accounts payable 886 749
Taxes accrued 167 394
Interest accrued 145 122
Current maturities of long-term debt 285 983
Asset retirement obligations 194 230
Regulatory liabilities 274 348
Other 370 427
Total current liabilities 2,719 4,170
Long-Term Debt (includes amounts related to VIEs) 13,461 11,371
Other Noncurrent Liabilities    
Deferred income taxes 2,642 2,344
Total noncurrent asset retirement obligation 4,095 4,104
Total noncurrent regulatory liabilities 4,807 4,570
Operating lease liabilities 384 332
Accrued pension and other post-retirement benefit costs 139 141
Investment tax credits 194 144
Other 326 196
Total other noncurrent liabilities 12,587 11,831
Commitments and Contingencies
Equity    
Total member's equity 13,610 11,971
Total Liabilities and Equity 42,527 39,493
Notes receivable from affiliated companies 186 0
Duke Energy Progress | Consolidated VIEs    
Current Assets    
Regulatory assets 70 47
Other (includes amounts related to VIEs) 38 40
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 1,169 775
Current Liabilities    
Current maturities of long-term debt 41 443
Long-Term Debt (includes amounts related to VIEs) 1,224 809
Other Noncurrent Liabilities    
Other   11
Duke Energy Progress | Affiliated entity    
Current Assets    
Receivables of VIEs (net of allowance for doubtful accounts) 104 10
Current Liabilities    
Accounts payable 398 306
Notes payable to affiliated companies   611
Long-Term Debt (includes amounts related to VIEs) $ 150 $ 150
v3.25.4
Condensed Consolidated Balance Sheets - Duke Energy Progress (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 194 $ 122
Regulatory assets 1,934 2,739
Current Assets: Other 526 695
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Current maturities of long-term debt 7,104 4,349
Long-Term Debt 80,108 76,340
Other 1,889 1,551
Consolidated VIEs    
Allowance for doubtful accounts - receivables of VIEs   85
Regulatory assets 204 120
Current Assets: Other 88 90
Other Noncurrent Assets: Regulatory assets 3,108 1,705
Current maturities of long-term debt 118 1,012
Long-Term Debt 3,308 1,842
Other   27
Duke Energy Progress    
Allowance for doubtful accounts - receivables 38 10
Regulatory assets 652 626
Current Assets: Other 95 104
Other Noncurrent Assets: Regulatory assets 4,543 4,555
Current maturities of long-term debt 285 983
Long-Term Debt 13,461 11,371
Other 326 196
Duke Energy Progress | Consolidated VIEs    
Allowance for doubtful accounts - receivables of VIEs   34
Regulatory assets 70 47
Current Assets: Other 38 40
Other Noncurrent Assets: Regulatory assets 1,169 775
Current maturities of long-term debt 41 443
Long-Term Debt $ 1,224 809
Other   $ 11
v3.25.4
Condensed Consolidated Statements of Cash Flows - Duke Energy Progress - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) $ 5,071 $ 4,614 $ 2,874
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 7,704 6,419 6,084
Equity component of AFUDC (328) (233) (198)
Impairment of assets and other charges (4) 38 85
Deferred income taxes 1,204 987 3
Contributions to qualified pension plans (100) (100) (100)
Payments for asset retirement obligations (509) (545) (632)
(Increase) decrease in      
Receivables (187) (23) 443
Inventory (63) (212) (706)
Other current assets 6 885 (267)
Increase (decrease) in      
Accounts payable (821) 1,329 (800)
Taxes accrued 127 32 126
Other current liabilities 52 (55) (80)
Other assets (265) (1,170) 914
Other liabilities 535 468 575
Net cash provided by operating activities 12,330 12,328 9,878
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (14,024) (12,280) (12,604)
Purchases of debt and equity securities (8,888) (5,703) (3,761)
Proceeds from sales and maturities of debt and equity securities 9,005 5,803 3,824
Other (1,079) (1,009) (799)
Net cash used in investing activities (14,338) (13,123) (12,475)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 11,891 8,956 10,028
Payments for the redemption of long-term debt (5,652) (3,357) (4,737)
Other 114 (52) (124)
Net cash provided by financing activities 1,950 859 2,351
Net (decrease) increase in cash, cash equivalents and restricted cash (58) 64 (246)
Cash, cash equivalents and restricted cash at beginning of period 421 357 603
Cash, cash equivalents and restricted cash at end of period 363 421 357
Supplemental Disclosures:      
Cash paid for interest, net of amount capitalized 3,590 3,284 2,883
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) (625) (400) 1
Significant non-cash transactions:      
Accrued capital expenditures 2,674 1,909 1,908
Duke Energy Progress      
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) 1,282 1,164 998
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 1,602 1,520 1,460
Equity component of AFUDC (100) (61) (52)
Impairment of assets and other charges 2 6 29
Deferred income taxes 345 (224) (53)
Contributions to qualified pension plans (14) (14) (13)
Payments for asset retirement obligations (176) (197) (249)
(Increase) decrease in      
Receivables 10 (11) (10)
Receivables from affiliated companies (94) 6 9
Inventory (23) (114) (221)
Other current assets (66) 375 (252)
Increase (decrease) in      
Accounts payable (8) 63 (26)
Accounts payable to affiliated companies 149 (26) (176)
Taxes accrued (227) 217 99
Other current liabilities (8) 133 13
Other assets (30) (426) 173
Other liabilities 110 79 5
Net cash provided by operating activities 2,754 2,490 1,734
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (3,428) (2,803) (2,387)
Purchases of debt and equity securities (3,789) (2,480) (1,406)
Proceeds from sales and maturities of debt and equity securities 3,788 2,480 1,402
Notes receivable from affiliated companies (186) 0 0
Other (215) (172) (144)
Net cash used in investing activities (3,830) (2,975) (2,535)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 2,613 855 991
Payments for the redemption of long-term debt (1,236) (72) (369)
Notes payable to affiliated companies (611) (280) 652
Contributions from parent 300 0 0
Distributions to parent 0 0 (500)
Other 2 0 (1)
Net cash provided by financing activities 1,068 503 773
Net (decrease) increase in cash, cash equivalents and restricted cash (8) 18 (28)
Cash, cash equivalents and restricted cash at beginning of period 69 51 79
Cash, cash equivalents and restricted cash at end of period 61 69 51
Supplemental Disclosures:      
Cash paid for interest, net of amount capitalized 536 522 447
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) 120 192 73
Significant non-cash transactions:      
Accrued capital expenditures $ 576 $ 374 $ 313
v3.25.4
Condensed Consolidated Statements of Changes in Equity - Duke Energy Progress - USD ($)
$ in Millions
Total
Duke Energy Progress
Duke Energy Progress
Member's Equity
Beginning balance at Dec. 31, 2022     $ 10,309
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income (loss) $ 2,841 $ 998 998
Dividends to parent (3,138)   (500)
Ending balance at Dec. 31, 2023     10,807
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income (loss) 4,524 1,164 1,164
Dividends to parent (3,204)    
Ending balance at Dec. 31, 2024   11,971 11,971
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income (loss) 4,968 1,282 1,282
Dividends to parent $ (3,290)    
Contribution from parent     300
Equitization of certain intercompany balances with affiliates     57
Ending balance at Dec. 31, 2025   $ 13,610 $ 13,610
v3.25.4
Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Florida - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Operating Revenues $ 32,237 $ 30,357 $ 29,060
Operating Expenses      
Operation, maintenance and other 6,698 5,389 5,625
Depreciation and amortization 6,324 5,793 5,253
Property and other taxes 1,597 1,466 1,400
Impairment of assets and other charges (4) 38 85
Total operating expenses 23,656 22,457 22,042
Gains on Sales of Other Assets and Other, net 45 26 52
Operating Income 8,626 7,926 7,070
Other Income and Expenses, net 720 652 711
Interest Expense 3,634 3,384 3,014
Income From Continuing Operations Before Income Taxes 5,712 5,194 4,767
Income Tax Expense 642 590 438
Net Income 4,968 4,524 2,841
Comprehensive Income 4,938 4,758 2,975
Duke Energy Florida      
Operating Revenues 7,105 6,595 7,036
Operating Expenses      
Cost of sales 1,749 2,346 2,823
Operation, maintenance and other 1,865 1,055 1,239
Depreciation and amortization 1,137 1,057 885
Property and other taxes 486 440 480
Impairment of assets and other charges 0 0 (1)
Total operating expenses 5,237 4,898 5,426
Gains on Sales of Other Assets and Other, net 3 3 2
Operating Income 1,871 1,700 1,612
Other Income and Expenses, net 90 86 78
Interest Expense 479 457 413
Income From Continuing Operations Before Income Taxes 1,482 1,329 1,277
Income Tax Expense 289 268 261
Net Income 1,193 1,061 1,016
Unrealized gains on available-for-sale securities 0 0 3
Other Comprehensive Income, net of tax 0 0 3
Comprehensive Income $ 1,193 $ 1,061 $ 1,019
v3.25.4
Condensed Consolidated Balance Sheets - Duke Energy Florida - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 245 $ 314
Receivables of VIEs (net of allowance for doubtful accounts) 4,214 2,170
Receivables (net of allowance for doubtful accounts) 16 1,889
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569 4,496
Regulatory assets 1,934 2,739
Other (includes amounts related to VIEs) 526 695
Total current assets 11,613 12,950
Property, Plant and Equipment    
Cost 190,409 178,737
Accumulated depreciation and amortization (60,450) (57,111)
Net property, plant and equipment 129,959 121,626
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Nuclear decommissioning trust funds 12,889 11,434
Operating lease right-of-use assets, net 1,241 1,148
Other (including amounts related to VIEs) 4,167 3,507
Total other noncurrent assets 54,164 51,767
Total Assets 195,736 186,343
Current Liabilities    
Accounts payable 5,223 5,436
Taxes accrued 975 851
Interest accrued 922 854
Current maturities of long-term debt 7,104 4,349
Asset retirement obligations 579 650
Regulatory liabilities 1,271 1,421
Other 2,265 2,080
Total current liabilities 21,047 19,357
Long-Term Debt (includes amounts related to VIEs) 80,108 76,340
Other Noncurrent Liabilities    
Deferred income taxes 12,377 11,424
Total noncurrent asset retirement obligation 9,046 9,338
Total noncurrent regulatory liabilities 15,682 14,521
Operating lease liabilities 1,033 957
Accrued pension and other post-retirement benefit costs 396 434
Investment tax credits 969 894
Other 1,889 1,551
Total other noncurrent liabilities 41,562 39,390
Commitments and Contingencies
Equity    
Accumulated other comprehensive income 198 228
Total Liabilities and Equity 195,736 186,343
Consolidated VIEs    
Current Assets    
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Regulatory assets 204 120
Other (includes amounts related to VIEs) 88 90
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 3,108 1,705
Current Liabilities    
Accounts payable 296 214
Current maturities of long-term debt 118 1,012
Long-Term Debt (includes amounts related to VIEs) 3,308 1,842
Other Noncurrent Liabilities    
Other   27
Duke Energy Florida    
Current Assets    
Cash and cash equivalents 21 33
Receivables of VIEs (net of allowance for doubtful accounts) 591 544
Receivables (net of allowance for doubtful accounts) 3 0
Notes receivable from affiliated companies 65 0
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 847 745
Regulatory assets 102 1,022
Other (includes amounts related to VIEs) 52 227
Total current assets 1,749 2,592
Property, Plant and Equipment    
Cost 33,160 30,490
Accumulated depreciation and amortization (8,437) (7,650)
Net property, plant and equipment 24,723 22,840
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 2,106 2,064
Nuclear decommissioning trust funds 296 331
Operating lease right-of-use assets, net 221 277
Other (including amounts related to VIEs) 561 465
Total other noncurrent assets 3,184 3,137
Total Assets 29,656 28,569
Current Liabilities    
Accounts payable 792 1,418
Taxes accrued 69 60
Interest accrued 87 86
Current maturities of long-term debt 437 534
Asset retirement obligations 2 1
Regulatory liabilities 76 174
Other 375 342
Total current liabilities 2,009 3,148
Long-Term Debt (includes amounts related to VIEs) 10,870 9,814
Other Noncurrent Liabilities    
Deferred income taxes 3,005 3,024
Total noncurrent asset retirement obligation 195 213
Total noncurrent regulatory liabilities 794 688
Operating lease liabilities 168 225
Accrued pension and other post-retirement benefit costs 88 92
Investment tax credits 240 241
Other 165 143
Total other noncurrent liabilities 4,655 4,626
Commitments and Contingencies
Equity    
Member's equity 12,127 10,986
Accumulated other comprehensive income (5) (5)
Total member's equity 12,122 10,981
Total Liabilities and Equity 29,656 28,569
Duke Energy Florida | Consolidated VIEs    
Current Assets    
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Regulatory assets 62 61
Other (includes amounts related to VIEs) 34 35
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 682 741
Current Liabilities    
Accounts payable 289 208
Current maturities of long-term debt 61 59
Long-Term Debt (includes amounts related to VIEs) 712 773
Duke Energy Florida | Affiliated entity    
Current Assets    
Receivables of VIEs (net of allowance for doubtful accounts) 68 21
Current Liabilities    
Accounts payable $ 171 67
Notes payable to affiliated companies   $ 466
v3.25.4
Condensed Consolidated Balance Sheets - Duke Energy Florida (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 194 $ 122
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569 4,496
Regulatory assets 1,934 2,739
Current Assets: Other 526 695
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Accounts payable 5,223 5,436
Current maturities of long-term debt 7,104 4,349
Long-Term Debt (includes amounts related to VIEs) 80,108 76,340
Other 1,889 1,551
Consolidated VIEs    
Allowance for doubtful accounts - receivables of VIEs   85
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Regulatory assets 204 120
Current Assets: Other 88 90
Other Noncurrent Assets: Regulatory assets 3,108 1,705
Accounts payable 296 214
Current maturities of long-term debt 118 1,012
Long-Term Debt (includes amounts related to VIEs) 3,308 1,842
Other   27
Duke Energy Florida    
Allowance for doubtful accounts - receivables 27 29
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 847 745
Regulatory assets 102 1,022
Current Assets: Other 52 227
Other Noncurrent Assets: Regulatory assets 2,106 2,064
Accounts payable 792 1,418
Current maturities of long-term debt 437 534
Long-Term Debt (includes amounts related to VIEs) 10,870 9,814
Other 165 143
Duke Energy Florida | Consolidated VIEs    
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Regulatory assets 62 61
Current Assets: Other 34 35
Other Noncurrent Assets: Regulatory assets 682 741
Accounts payable 289 208
Current maturities of long-term debt 61 59
Long-Term Debt (includes amounts related to VIEs) $ 712 $ 773
v3.25.4
Condensed Consolidated Statements of Cash Flows - Duke Energy Florida - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) $ 5,071 $ 4,614 $ 2,874
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 7,704 6,419 6,084
Equity component of AFUDC (328) (233) (198)
Gains on sales of other assets (45) (26) (52)
Impairment of assets and other charges (4) 38 85
Deferred income taxes 1,204 987 3
Contributions to qualified pension plans (100) (100) (100)
Payments for asset retirement obligations (509) (545) (632)
(Increase) decrease in      
Net realized and unrealized mark-to-market and hedging transactions 0 (103) (18)
Receivables (187) (23) 443
Inventory (63) (212) (706)
Other current assets 6 885 (267)
Increase (decrease) in      
Accounts payable (821) 1,329 (800)
Taxes accrued 127 32 126
Other current liabilities 52 (55) (80)
Other assets (265) (1,170) 914
Other liabilities 535 468 575
Net cash provided by operating activities 12,330 12,328 9,878
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (14,024) (12,280) (12,604)
Purchases of debt and equity securities (8,888) (5,703) (3,761)
Proceeds from sales and maturities of debt and equity securities 9,005 5,803 3,824
Proceeds from the sales of other assets 67 49 149
Other (1,079) (1,009) (799)
Net cash used in investing activities (14,338) (13,123) (12,475)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 11,891 8,956 10,028
Payments for the redemption of long-term debt (5,652) (3,357) (4,737)
Other 114 (52) (124)
Net cash provided by financing activities 1,950 859 2,351
Net (decrease) increase in cash, cash equivalents and restricted cash (58) 64 (246)
Cash, cash equivalents and restricted cash at beginning of period 421 357 603
Cash, cash equivalents and restricted cash at end of period 363 421 357
Supplemental Disclosures:      
Cash paid for interest, net of amount capitalized 3,590 3,284 2,883
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) (625) (400) 1
Significant non-cash transactions:      
Accrued capital expenditures 2,674 1,909 1,908
Duke Energy Florida      
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) 1,193 1,061 1,016
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 2,063 1,239 1,260
Equity component of AFUDC (17) (13) (15)
Gains on sales of other assets (3) (3) (2)
Impairment of assets and other charges 0 0 (1)
Deferred income taxes (48) 265 (89)
Contributions to qualified pension plans (10) (9) (9)
Payments for asset retirement obligations (38) (82) (80)
(Increase) decrease in      
Receivables (2) 37 30
Receivables from affiliated companies (47) 217 (236)
Inventory (89) (58) (101)
Other current assets 310 (456) 496
Increase (decrease) in      
Accounts payable (767) 803 (241)
Accounts payable to affiliated companies 104 (68) (42)
Taxes accrued 17 (129) 132
Other current liabilities (60) 37 3
Other assets (89) (309) 165
Other liabilities (10) 38 101
Net cash provided by operating activities 2,507 2,570 2,387
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (2,698) (2,449) (2,529)
Purchases of debt and equity securities (209) (223) (184)
Proceeds from sales and maturities of debt and equity securities 255 330 261
Notes receivable from affiliated companies (65) 0 0
Other (207) (292) (185)
Net cash used in investing activities (2,924) (2,634) (2,637)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 1,807 279 1,564
Payments for the redemption of long-term debt (885) (395) (879)
Notes payable to affiliated companies (466) 314 (453)
Contributions from parent 138 0 0
Distributions to parent (188) (125) 0
Other (2) (1) (1)
Net cash provided by financing activities 404 72 231
Net (decrease) increase in cash, cash equivalents and restricted cash (13) 8 (19)
Cash, cash equivalents and restricted cash at beginning of period 75 67 86
Cash, cash equivalents and restricted cash at end of period 62 75 67
Supplemental Disclosures:      
Cash paid for interest, net of amount capitalized 473 442 394
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) 167 270 219
Significant non-cash transactions:      
Accrued capital expenditures $ 540 $ 371 $ 493
v3.25.4
Condensed Consolidated Statements of Changes in Equity - Duke Energy Florida - USD ($)
$ in Millions
Total
Duke Energy Florida
Duke Energy Florida
Member's Equity
Duke Energy Florida
Net Unrealized Gains (Losses) on Available-for-Sale Securities
Beginning balance at Dec. 31, 2022   $ 9,023 $ 9,031 $ (8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income $ 2,841 1,016 1,016  
Other Comprehensive Income, net of tax   3   3
Dividends to parent (3,138)      
Other (2) 1 1  
Ending balance at Dec. 31, 2023   10,043 10,048 (5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income 4,524 1,061 1,061  
Other Comprehensive Income, net of tax   0    
Dividends to parent (3,204) (125) (125)  
Other (2) 2 2  
Ending balance at Dec. 31, 2024   10,981 10,986 (5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income 4,968 1,193 1,193  
Other Comprehensive Income, net of tax   0    
Dividends to parent (3,290) (188) (188)  
Contribution from parent   138 138  
Other $ (3) (2) (2)  
Ending balance at Dec. 31, 2025   $ 12,122 $ 12,127 $ (5)
v3.25.4
Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Ohio - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Regulated electric $ 29,060 $ 27,787 $ 26,617
Regulated natural gas 2,870 2,252 2,152
Total operating revenues 32,237 30,357 29,060
Operating Expenses      
Operation, maintenance and other 6,698 5,389 5,625
Depreciation and amortization 6,324 5,793 5,253
Property and other taxes 1,597 1,466 1,400
Impairment of assets and other charges (4) 38 85
Total operating expenses 23,656 22,457 22,042
Gains on Sales of Other Assets and Other, net 45 26 52
Operating Income 8,626 7,926 7,070
Other Income and Expenses, net 720 652 711
Interest Expense 3,634 3,384 3,014
Income From Continuing Operations Before Income Taxes 5,712 5,194 4,767
Income Tax Expense From Continuing Operations 642 590 438
Comprehensive Income 4,938 4,758 2,975
Net Income 4,968 4,524 2,841
Fuel used in electric generation and purchased power      
Operating Expenses      
Cost of sales 8,058 9,206 9,086
Cost of natural gas      
Operating Expenses      
Cost of sales 983 565 593
Duke Energy Ohio      
Regulated electric 2,045 1,905 1,868
Regulated natural gas 752 640 639
Total operating revenues 2,797 2,545 2,507
Operating Expenses      
Operation, maintenance and other 490 485 478
Depreciation and amortization 466 403 367
Property and other taxes 432 400 364
Impairment of assets and other charges 0 0 3
Total operating expenses 2,213 1,968 1,983
Gains on Sales of Other Assets and Other, net 1 1 1
Operating Income 585 578 525
Other Income and Expenses, net 24 19 41
Interest Expense 203 192 169
Income From Continuing Operations Before Income Taxes 406 405 397
Income Tax Expense From Continuing Operations 68 64 63
Comprehensive Income 338 341 334
Net Income 338 341 334
Duke Energy Ohio | Fuel used in electric generation and purchased power      
Operating Expenses      
Cost of sales 626 538 608
Duke Energy Ohio | Cost of natural gas      
Operating Expenses      
Cost of sales $ 199 $ 142 $ 163
v3.25.4
Condensed Consolidated Balance Sheets - Duke Energy Ohio - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 245 $ 314
Receivables of VIEs (net of allowance for doubtful accounts) 4,214 2,170
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569 4,496
Regulatory assets 1,934 2,739
Other (includes amounts related to VIEs) 526 695
Total current assets 11,613 12,950
Property, Plant and Equipment    
Cost 190,409 178,737
Accumulated depreciation and amortization (60,450) (57,111)
Net property, plant and equipment 129,959 121,626
Other Noncurrent Assets    
Goodwill 19,010 19,010
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Operating lease right-of-use assets, net 1,241 1,148
Other (including amounts related to VIEs) 4,167 3,507
Total other noncurrent assets 54,164 51,767
Total Assets 195,736 186,343
Current Liabilities    
Accounts payable 5,223 5,436
Taxes accrued 975 851
Interest accrued 922 854
Current maturities of long-term debt 7,104 4,349
Asset retirement obligations 579 650
Regulatory liabilities 1,271 1,421
Other 2,265 2,080
Total current liabilities 21,047 19,357
Long-Term Debt (includes amounts related to VIEs) 80,108 76,340
Other Noncurrent Liabilities    
Deferred income taxes 12,377 11,424
Total noncurrent asset retirement obligation 9,046 9,338
Total noncurrent regulatory liabilities 15,682 14,521
Operating lease liabilities 1,033 957
Accrued pension and other post-retirement benefit costs 396 434
Other 1,889 1,551
Total other noncurrent liabilities 41,562 39,390
Commitments and Contingencies
Equity    
Common stock 1 1
Additional paid-in capital 45,614 45,494
Retained earnings 5,056 3,431
Total Duke Energy Corporation stockholders' equity 51,842 50,127
Total Liabilities and Equity 195,736 186,343
Duke Energy Ohio    
Current Assets    
Cash and cash equivalents 18 24
Receivables of VIEs (net of allowance for doubtful accounts) 473 447
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 187 183
Regulatory assets 86 88
Other (includes amounts related to VIEs) 37 30
Total current assets 924 811
Property, Plant and Equipment    
Cost 14,627 13,918
Accumulated depreciation and amortization (3,812) (3,674)
Net property, plant and equipment 10,815 10,244
Other Noncurrent Assets    
Goodwill 920 920
Other Noncurrent Assets: Regulatory assets 686 705
Operating lease right-of-use assets, net 5 6
Other (including amounts related to VIEs) 96 82
Total other noncurrent assets 1,707 1,713
Total Assets 13,446 12,768
Current Liabilities    
Accounts payable 333 313
Taxes accrued 377 363
Interest accrued 51 49
Current maturities of long-term debt 45 245
Asset retirement obligations 6 8
Regulatory liabilities 57 34
Other 77 67
Total current liabilities 1,050 1,293
Other Noncurrent Liabilities    
Deferred income taxes 1,341 1,314
Total noncurrent asset retirement obligation 129 131
Total noncurrent regulatory liabilities 470 465
Operating lease liabilities 5 6
Accrued pension and other post-retirement benefit costs 88 89
Other 90 91
Total other noncurrent liabilities 2,123 2,096
Commitments and Contingencies
Equity    
Common stock 762 762
Additional paid-in capital 3,219 3,118
Retained earnings 1,917 1,579
Total Duke Energy Corporation stockholders' equity 5,898 5,459
Total Liabilities and Equity 13,446 12,768
Duke Energy Ohio | Affiliated entity    
Current Assets    
Receivables of VIEs (net of allowance for doubtful accounts) 12 11
Notes receivable from affiliated companies 111 28
Current Liabilities    
Accounts payable 91 52
Notes payable to affiliated companies 13 162
Long-Term Debt (includes amounts related to VIEs) 25 25
Duke Energy Ohio | Nonrelated Party    
Current Liabilities    
Long-Term Debt (includes amounts related to VIEs) $ 4,350 $ 3,895
v3.25.4
Condensed Consolidated Balance Sheets - Duke Energy Ohio (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 194 $ 122
Common stock, par value (in usd per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 2,000,000,000 2,000,000,000
Common stock, shares outstanding (in shares) 778,000,000 776,000,000
Duke Energy Ohio    
Allowance for doubtful accounts - receivables $ 51 $ 43
Common stock, par value (in usd per share) $ 8.50 $ 8.50
Common stock, shares authorized (in shares) 120,000,000 120,000,000
Common stock, shares outstanding (in shares) 90,000,000 90,000,000
v3.25.4
Condensed Consolidated Statements of Cash Flows - Duke Energy Ohio - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) $ 5,071 $ 4,614 $ 2,874
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 7,704 6,419 6,084
Equity component of AFUDC (328) (233) (198)
Impairment of assets and other charges (4) 38 85
Deferred income taxes 1,204 987 3
Equity in (earnings) losses of unconsolidated affiliates (51) 9 (98)
Contributions to qualified pension plans (100) (100) (100)
Payments for asset retirement obligations (509) (545) (632)
(Increase) decrease in      
Receivables (187) (23) 443
Inventory (63) (212) (706)
Other current assets 6 885 (267)
Increase (decrease) in      
Accounts payable (821) 1,329 (800)
Taxes accrued 127 32 126
Other current liabilities 52 (55) (80)
Other assets (265) (1,170) 914
Other liabilities 535 468 575
Net cash provided by operating activities 12,330 12,328 9,878
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (14,024) (12,280) (12,604)
Other (1,079) (1,009) (799)
Net cash used in investing activities (14,338) (13,123) (12,475)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 11,891 8,956 10,028
Payments for the redemption of long-term debt (5,652) (3,357) (4,737)
Other 114 (52) (124)
Net cash provided by financing activities 1,950 859 2,351
Net (decrease) increase in cash, cash equivalents and restricted cash (58) 64 (246)
Cash, cash equivalents and restricted cash at beginning of period 421 357 603
Cash, cash equivalents and restricted cash at end of period 363 421 357
Supplemental Disclosures:      
Cash paid for interest, net of amount capitalized 3,590 3,284 2,883
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) (625) (400) 1
Significant non-cash transactions:      
Accrued capital expenditures 2,674 1,909 1,908
Duke Energy Ohio      
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) 338 341 334
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 470 408 371
Equity component of AFUDC (16) (7) (9)
Impairment of assets and other charges 0 0 3
Deferred income taxes 0 8 113
Contributions to qualified pension plans (6) (5) (5)
Payments for asset retirement obligations (5) (6) (13)
(Increase) decrease in      
Receivables (27) 2 (38)
Receivables from affiliated companies (1) 57 (40)
Inventory (4) (4) (35)
Other current assets (29) 78 (23)
Increase (decrease) in      
Accounts payable 38 (10) (34)
Accounts payable to affiliated companies 39 (19) (1)
Taxes accrued 14 47 (1)
Other current liabilities 42 (5) (54)
Other assets 8 45 (24)
Other liabilities 32 (25) (38)
Net cash provided by operating activities 893 905 506
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (929) (815) (939)
Proceeds from the sales of other assets 0 0 75
Notes receivable from affiliated companies 83 194 (48)
Other (88) (88) (67)
Net cash used in investing activities (1,100) (1,097) (883)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 496 644 774
Payments for the redemption of long-term debt (245) 0 (500)
Notes payable to affiliated companies (149) (451) 116
Contributions from parent 100 0 0
Other (1) (1) (5)
Net cash provided by financing activities 201 192 385
Net (decrease) increase in cash, cash equivalents and restricted cash (6) 0 8
Cash, cash equivalents and restricted cash at beginning of period 24 24 16
Cash, cash equivalents and restricted cash at end of period 18 24 24
Supplemental Disclosures:      
Cash paid for interest, net of amount capitalized 195 175 158
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) 103 (79) 58
Significant non-cash transactions:      
Accrued capital expenditures $ 92 $ 99 $ 115
v3.25.4
Condensed Consolidated Statements of Changes in Equity - Duke Energy Ohio - USD ($)
$ in Millions
Total
Additional Paid-in Capital
Retained Earnings
Duke Energy Ohio
Duke Energy Ohio
Common Stock
Duke Energy Ohio
Additional Paid-in Capital
Duke Energy Ohio
Retained Earnings
Beginning Balance (Attributable to Parent) at Dec. 31, 2022       $ 4,766 $ 762 $ 3,100 $ 904
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income (loss) $ 2,841     334     334
Other (2) $ (7) $ 1        
Ending Balance (Attributable to Parent) at Dec. 31, 2023       5,100 762 3,100 1,238
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income (loss) 4,524     341     341
Other (2)   (2) 18   18 0
Ending Balance (Attributable to Parent) at Dec. 31, 2024 50,127     5,459 762 3,118 1,579
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income (loss) 4,968     338     338
Contribution from parent       100   100  
Other (3)   $ 3 1   1  
Ending Balance (Attributable to Parent) at Dec. 31, 2025 $ 51,842     $ 5,898 $ 762 $ 3,219 $ 1,917
v3.25.4
Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Indiana - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Operating Revenues $ 32,237 $ 30,357 $ 29,060
Operating Expenses      
Operation, maintenance and other 6,698 5,389 5,625
Depreciation and amortization 6,324 5,793 5,253
Property and other taxes 1,597 1,466 1,400
Total operating expenses 23,656 22,457 22,042
Operating Income 8,626 7,926 7,070
Other Income and Expenses, net 720 652 711
Interest Expense 3,634 3,384 3,014
Income From Continuing Operations Before Income Taxes 5,712 5,194 4,767
Income Tax Expense From Continuing Operations 642 590 438
Net Income 4,968 4,524 2,841
Comprehensive Income 4,938 4,758 2,975
Duke Energy Indiana      
Operating Revenues 3,544 3,040 3,399
Operating Expenses      
Cost of sales 1,065 964 1,217
Operation, maintenance and other 811 671 713
Depreciation and amortization 823 676 666
Property and other taxes 61 50 59
Total operating expenses 2,760 2,361 2,655
Operating Income 784 679 744
Other Income and Expenses, net 61 62 76
Interest Expense 243 229 213
Income From Continuing Operations Before Income Taxes 602 512 607
Income Tax Expense From Continuing Operations 82 71 110
Net Income 520 441 497
Other comprehensive income (loss) 0 (1) 0
Comprehensive Income $ 520 $ 440 $ 497
v3.25.4
Condensed Consolidated Balance Sheets - Duke Energy Indiana - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 245 $ 314
Receivables of VIEs (net of allowance for doubtful accounts) 4,214 2,170
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569 4,496
Regulatory assets 1,934 2,739
Total current assets 11,613 12,950
Property, Plant and Equipment    
Cost 190,409 178,737
Accumulated depreciation and amortization (60,450) (57,111)
Net property, plant and equipment 129,959 121,626
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Operating lease right-of-use assets, net 1,241 1,148
Other (including amounts related to VIEs) 4,167 3,507
Total other noncurrent assets 54,164 51,767
Total Assets 195,736 186,343
Current Liabilities    
Accounts payable 5,223 5,436
Taxes accrued 975 851
Interest accrued 922 854
Current maturities of long-term debt 7,104 4,349
Asset retirement obligations 579 650
Regulatory liabilities 1,271 1,421
Other 2,265 2,080
Total current liabilities 21,047 19,357
Long-Term Debt (includes amounts related to VIEs) 80,108 76,340
Other Noncurrent Liabilities    
Deferred income taxes 12,377 11,424
Total noncurrent asset retirement obligation 9,046 9,338
Total noncurrent regulatory liabilities 15,682 14,521
Operating lease liabilities 1,033 957
Accrued pension and other post-retirement benefit costs 396 434
Investment tax credits 969 894
Other 1,889 1,551
Total other noncurrent liabilities 41,562 39,390
Commitments and Contingencies
Equity    
Total Liabilities and Equity 195,736 186,343
Duke Energy Indiana    
Current Assets    
Cash and cash equivalents 12 13
Receivables of VIEs (net of allowance for doubtful accounts) 458 423
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 531 586
Regulatory assets 193 113
Other 36 69
Total current assets 1,255 1,205
Property, Plant and Equipment    
Cost 21,241 19,970
Accumulated depreciation and amortization (7,492) (6,848)
Net property, plant and equipment 13,749 13,122
Other Noncurrent Assets    
Other Noncurrent Assets: Regulatory assets 1,032 1,040
Operating lease right-of-use assets, net 32 37
Other (including amounts related to VIEs) 278 323
Total other noncurrent assets 1,342 1,400
Total Assets 16,346 15,727
Current Liabilities    
Accounts payable 360 257
Taxes accrued 101 168
Interest accrued 62 59
Current maturities of long-term debt 4 4
Asset retirement obligations 133 164
Regulatory liabilities 275 183
Other 216 183
Total current liabilities 1,364 1,085
Long-Term Debt (includes amounts related to VIEs) 4,939 4,644
Other Noncurrent Liabilities    
Deferred income taxes 1,525 1,494
Total noncurrent asset retirement obligation 992 1,104
Total noncurrent regulatory liabilities 1,185 1,404
Operating lease liabilities 28 33
Accrued pension and other post-retirement benefit costs 75 82
Investment tax credits 183 186
Other 14 19
Total other noncurrent liabilities 4,002 4,322
Commitments and Contingencies
Equity    
Member's equity 5,891 5,526
Total member's equity 5,891 5,526
Total Liabilities and Equity 16,346 15,727
Duke Energy Indiana | Affiliated entity    
Current Assets    
Receivables of VIEs (net of allowance for doubtful accounts) 25 1
Current Liabilities    
Accounts payable 38 57
Notes payable to affiliated companies 175 10
Long-Term Debt (includes amounts related to VIEs) $ 150 $ 150
v3.25.4
Condensed Consolidated Balance Sheets - Duke Energy Indiana (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 194 $ 122
Duke Energy Indiana    
Allowance for doubtful accounts - receivables $ 15 $ 15
v3.25.4
Condensed Consolidated Statements of Cash Flows - Duke Energy Indiana - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) $ 5,071 $ 4,614 $ 2,874
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 7,704 6,419 6,084
Equity component of AFUDC (328) (233) (198)
Deferred income taxes 1,204 987 3
Contributions to qualified pension plans (100) (100) (100)
Payments for asset retirement obligations 509 545 632
(Increase) decrease in      
Receivables (187) (23) 443
Inventory (63) (212) (706)
Other current assets 6 885 (267)
Increase (decrease) in      
Accounts payable (821) 1,329 (800)
Taxes accrued 127 32 126
Other current liabilities 52 (55) (80)
Other assets (265) (1,170) 914
Other liabilities 535 468 575
Net cash provided by operating activities 12,330 12,328 9,878
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (14,024) (12,280) (12,604)
Purchases of debt and equity securities (8,888) (5,703) (3,761)
Proceeds from sales and maturities of debt and equity securities 9,005 5,803 3,824
Other (1,079) (1,009) (799)
Net cash used in investing activities (14,338) (13,123) (12,475)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 11,891 8,956 10,028
Payments for the redemption of long-term debt (5,652) (3,357) (4,737)
Other 114 (52) (124)
Net cash provided by financing activities 1,950 859 2,351
Net (decrease) increase in cash, cash equivalents and restricted cash (58) 64 (246)
Cash, cash equivalents and restricted cash at beginning of period 421 357 603
Cash, cash equivalents and restricted cash at end of period 363 421 357
Supplemental Disclosures:      
Cash paid for interest, net of amount capitalized 3,590 3,284 2,883
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) (625) (400) 1
Significant non-cash transactions:      
Accrued capital expenditures 2,674 1,909 1,908
Duke Energy Indiana      
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) 520 441 497
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 827 679 669
Equity component of AFUDC (34) (19) (10)
Deferred income taxes (56) (11) 91
Contributions to qualified pension plans (8) (8) (8)
Payments for asset retirement obligations 92 80 81
(Increase) decrease in      
Receivables (38) 27 (40)
Receivables from affiliated companies (24) 5 (8)
Inventory 56 (4) (93)
Other current assets (54) 70 138
Increase (decrease) in      
Accounts payable (6) (44) (83)
Accounts payable to affiliated companies (19) (78) 42
Taxes accrued (67) 102 (26)
Other current liabilities 101 (70) 128
Other assets (9) (33) (69)
Other liabilities (52) 46 7
Net cash provided by operating activities 1,045 1,023 1,154
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (1,332) (935) (961)
Purchases of debt and equity securities (62) (133) (68)
Proceeds from sales and maturities of debt and equity securities 137 132 55
Notes receivable from affiliated companies 0 (117) 109
Other (91) (46) (66)
Net cash used in investing activities (1,348) (1,099) (931)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 297 298 495
Payments for the redemption of long-term debt (4) (4) (303)
Notes payable to affiliated companies 165 (246) (178)
Contributions from parent 0 235 0
Distributions to parent (155) (201) (259)
Other (1) (1) (1)
Net cash provided by financing activities 302 81 (246)
Net (decrease) increase in cash, cash equivalents and restricted cash (1) 5 (23)
Cash, cash equivalents and restricted cash at beginning of period 13 8 31
Cash, cash equivalents and restricted cash at end of period 12 13 8
Supplemental Disclosures:      
Cash paid for interest, net of amount capitalized 236 219 202
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) 208 (80) 90
Significant non-cash transactions:      
Accrued capital expenditures $ 235 $ 115 $ 114
v3.25.4
Condensed Consolidated Statements of Changes in Equity - Duke Energy Indiana - USD ($)
$ in Millions
Total
Duke Energy Indiana
Duke Energy Indiana
Member's Equity
Duke Energy Indiana
Pension and OPEB Adjustments
Beginning balance at Dec. 31, 2022   $ 4,703 $ 4,702 $ 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) $ 2,841 497 497  
Dividends to parent (3,138) (187) (187)  
Other (2)      
Ending balance at Dec. 31, 2023   5,013 5,012 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) 4,524 441 441  
Contribution from parent   235 235  
Dividends to parent (3,204) (160) (160)  
Other (2) (3) (2) (1)
Ending balance at Dec. 31, 2024   5,526 5,526  
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) 4,968 520 520  
Dividends to parent (3,290) (155) (155)  
Other $ (3)      
Ending balance at Dec. 31, 2025   $ 5,891 $ 5,891 $ 0
v3.25.4
Condensed Consolidated Statements of Operations and Comprehensive Income - Piedmont - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Regulated natural gas $ 2,870 $ 2,252 $ 2,152
Nonregulated electric and other 307 318 291
Total operating revenues 32,237 30,357 29,060
Operating Expenses      
Operation, maintenance and other 6,698 5,389 5,625
Depreciation and amortization 6,324 5,793 5,253
Property and other taxes 1,597 1,466 1,400
Impairment of assets and other charges (4) 38 85
Total operating expenses 23,656 22,457 22,042
Operating Income 8,626 7,926 7,070
Equity in earnings (losses) of unconsolidated affiliates 51 (9) 113
Other income and expenses, net 669 661 598
Total other income and expenses 720 652 711
Interest Expense 3,634 3,384 3,014
Income From Continuing Operations Before Income Taxes 5,712 5,194 4,767
Income Tax Expense From Continuing Operations 642 590 438
Net Income 4,968 4,524 2,841
Comprehensive Income 4,938 4,758 2,975
Piedmont      
Regulated natural gas 2,209 1,702 1,603
Nonregulated electric and other 28 27 25
Total operating revenues 2,237 1,729 1,628
Operating Expenses      
Cost of natural gas 784 423 430
Operation, maintenance and other 408 359 344
Depreciation and amortization 282 261 237
Property and other taxes 67 55 59
Impairment of assets and other charges 0 0 (4)
Total operating expenses 1,541 1,098 1,066
Operating Income 696 631 562
Equity in earnings (losses) of unconsolidated affiliates 8 8 9
Other income and expenses, net 41 54 57
Total other income and expenses 49 62 66
Interest Expense 193 185 165
Income From Continuing Operations Before Income Taxes 552 508 463
Income Tax Expense From Continuing Operations 112 95 84
Net Income 440 413 379
Comprehensive Income $ 440 $ 413 $ 379
v3.25.4
Condensed Consolidated Balance Sheets - Piedmont - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 245 $ 314
Receivables of VIEs (net of allowance for doubtful accounts) 4,214 2,170
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569 4,496
Assets held for sale 109 96
Regulatory assets 1,934 2,739
Other (includes amounts related to VIEs) 526 695
Total current assets 11,613 12,950
Property, Plant and Equipment    
Cost 190,409 178,737
Accumulated depreciation and amortization (60,450) (57,111)
Net property, plant and equipment 129,959 121,626
Other Noncurrent Assets    
Goodwill 19,010 19,010
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Operating lease right-of-use assets, net 1,241 1,148
Investments in equity method unconsolidated affiliates 330 353
Assets held for sale 2,148 2,095
Other (including amounts related to VIEs) 4,167 3,507
Total other noncurrent assets 54,164 51,767
Total Assets 195,736 186,343
Current Liabilities    
Accounts payable 5,223 5,436
Taxes accrued 975 851
Interest accrued 922 854
Current maturities of long-term debt 7,104 4,349
Liabilities associated with assets held for sale 84 132
Regulatory liabilities 1,271 1,421
Other 2,265 2,080
Total current liabilities 21,047 19,357
Long-Term Debt (includes amounts related to VIEs) 80,108 76,340
Other Noncurrent Liabilities    
Deferred income taxes 12,377 11,424
Total noncurrent asset retirement obligation 9,046 9,338
Total noncurrent regulatory liabilities 15,682 14,521
Operating lease liabilities 1,033 957
Accrued pension and other post-retirement benefit costs 396 434
Liabilities associated with assets held for sale 170 271
Other 1,889 1,551
Total other noncurrent liabilities 41,562 39,390
Commitments and Contingencies
Equity    
Common stock 1 1
Retained earnings 5,056 3,431
Total Duke Energy Corporation stockholders' equity 51,842 50,127
Noncontrolling interests 1,177 1,129
Total equity 53,019 51,256
Total Liabilities and Equity 195,736 186,343
Piedmont    
Current Assets    
Cash and cash equivalents 1 2
Receivables of VIEs (net of allowance for doubtful accounts) 390 306
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 77 66
Assets held for sale 109 92
Regulatory assets 106 141
Other (includes amounts related to VIEs) 8 10
Total current assets 699 633
Property, Plant and Equipment    
Cost 11,325 10,712
Accumulated depreciation and amortization (2,168) (2,041)
Net property, plant and equipment 9,157 8,671
Other Noncurrent Assets    
Goodwill 39 39
Other Noncurrent Assets: Regulatory assets 350 387
Operating lease right-of-use assets, net 2 4
Investments in equity method unconsolidated affiliates 76 76
Assets held for sale 1,864 1,722
Other (including amounts related to VIEs) 283 267
Total other noncurrent assets 2,614 2,495
Total Assets 12,470 11,799
Current Liabilities    
Accounts payable 286 195
Taxes accrued 106 83
Interest accrued 41 44
Current maturities of long-term debt 490 205
Liabilities associated with assets held for sale 66 52
Regulatory liabilities 20 64
Other 81 72
Total current liabilities 1,789 1,480
Long-Term Debt (includes amounts related to VIEs) 3,761 3,798
Other Noncurrent Liabilities    
Deferred income taxes 1,071 1,018
Total noncurrent asset retirement obligation 25 24
Total noncurrent regulatory liabilities 802 783
Operating lease liabilities 2 7
Accrued pension and other post-retirement benefit costs 7 7
Liabilities associated with assets held for sale 170 182
Other 89 146
Total other noncurrent liabilities 2,166 2,167
Commitments and Contingencies
Equity    
Common stock 1,635 1,635
Retained earnings 3,118 2,718
Total Duke Energy Corporation stockholders' equity 4,753 4,353
Noncontrolling interests 1 1
Total equity 4,754 4,354
Total Liabilities and Equity 12,470 11,799
Piedmont | Affiliated entity    
Current Assets    
Receivables of VIEs (net of allowance for doubtful accounts) 8 16
Current Liabilities    
Accounts payable 90 26
Notes payable to affiliated companies $ 609 $ 739
v3.25.4
Condensed Consolidated Balance Sheets - Piedmont (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 194 $ 122
Common stock, par value (in usd per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 2,000,000,000 2,000,000,000
Common stock, shares outstanding (in shares) 778,000,000 776,000,000
Piedmont    
Allowance for doubtful accounts - receivables $ 6 $ 7
Common stock, par value (in usd per share) $ 0 $ 0
Common stock, shares authorized (in shares) 100 100
Common stock, shares outstanding (in shares) 100 100
v3.25.4
Condensed Consolidated Statements of Cash Flows - Duke Energy Piedmont - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) $ 5,071 $ 4,614 $ 2,874
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 7,704 6,419 6,084
Equity component of AFUDC (328) (233) (198)
Gains on sales of other assets (45) (26) (52)
Impairment of assets and other charges (4) 38 85
Deferred income taxes 1,204 987 3
Contributions to qualified pension plans (100) (100) (100)
(Increase) decrease in      
Receivables (187) (23) 443
Inventory (63) (212) (706)
Other current assets 6 885 (267)
Increase (decrease) in      
Accounts payable (821) 1,329 (800)
Taxes accrued 127 32 126
Other current liabilities 52 (55) (80)
Other assets (265) (1,170) 914
Other liabilities 535 468 575
Net cash provided by operating activities 12,330 12,328 9,878
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (14,024) (12,280) (12,604)
Other (1,079) (1,009) (799)
Net cash used in investing activities (14,338) (13,123) (12,475)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 11,891 8,956 10,028
Payments for the redemption of long-term debt (5,652) (3,357) (4,737)
Dividends to parent 114 (52) (124)
Net cash provided by financing activities 1,950 859 2,351
Net (decrease) increase in cash, cash equivalents and restricted cash (58) 64 (246)
Cash, cash equivalents and restricted cash at beginning of period 421 357 603
Cash, cash equivalents and restricted cash at end of period 363 421 357
Supplemental Disclosures:      
Cash paid for interest, net of amount capitalized 3,590 3,284 2,883
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) (625) (400) 1
Significant non-cash transactions:      
Accrued capital expenditures 2,674 1,909 1,908
Piedmont      
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) 440 413 379
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, amortization and accretion (including amortization of nuclear fuel) 285 264 239
Equity component of AFUDC (17) (21) (21)
Impairment of assets and other charges 0 0 (4)
Deferred income taxes 40 60 38
Equity in earnings of unconsolidated affiliates (8) (8) (9)
Contributions to qualified pension plans (3) (3) (3)
(Increase) decrease in      
Receivables (105) (61) 127
Receivables from affiliated companies 8 (6) 1
Inventory (10) 34 58
Other current assets 40 (9) (46)
Increase (decrease) in      
Accounts payable 55 40 (45)
Accounts payable to affiliated companies 64 (28) 3
Taxes accrued 22 (5) 15
Other current liabilities (35) (13) 27
Other assets 7 (16) (7)
Other liabilities (6) 17 10
Net cash provided by operating activities 777 658 762
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (807) (1,025) (1,036)
Other (44) (54) (54)
Net cash used in investing activities (851) (1,079) (1,090)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from the issuance of long-term debt 450 373 348
Payments for the redemption of long-term debt (205) (40) (45)
Notes payable to affiliated companies (131) 200 25
Distributions to parent (40) (110) 0
Dividends to parent (1) 0 0
Net cash provided by financing activities 73 423 328
Net (decrease) increase in cash, cash equivalents and restricted cash (1) 2 0
Cash, cash equivalents and restricted cash at beginning of period 2 0 0
Cash, cash equivalents and restricted cash at end of period 1 2 0
Supplemental Disclosures:      
Cash paid for interest, net of amount capitalized 193 176 162
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds) 55 48 28
Significant non-cash transactions:      
Accrued capital expenditures $ 169 $ 105 $ 223
v3.25.4
Condensed Consolidated Statements of Changes in Equity - Piedmont - USD ($)
$ in Millions
Total
Common Stock
Retained Earnings
Total Equity
Noncontrolling Interests
Piedmont
Piedmont
Common Stock
Piedmont
Retained Earnings
Piedmont
Total Equity
Piedmont
Noncontrolling Interests
Beginning Balance (Parent) at Dec. 31, 2022 $ 51,853 $ 1 $ 2,637 $ 49,322 $ 2,531 $ 3,673 $ 1,635 $ 2,037 $ 3,672 $ 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 2,874         379   379 379  
Dividends to parent (3,138)   (3,138) (3,138)            
Other (2)   1 (6) 4          
Ending Balance (Parent) at Dec. 31, 2023 50,187 1 2,235 49,112 1,075 4,052 1,635 2,416 4,051 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 4,614         413   413 413  
Dividends to parent (3,204)   (3,204) (3,204)   (110)   (110) (110)  
Other (2)   (2) (2) 0 (1)   (1) (1) 0
Ending Balance (Parent) at Dec. 31, 2024 51,256 1 3,431 50,127 1,129 4,354 1,635 2,718 4,353 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 5,071         440   440 440  
Dividends to parent (3,290)   (3,290) (3,290)   (40)   (40) (40)  
Other (3)   3 3 (6)          
Ending Balance (Parent) at Dec. 31, 2025 $ 53,019 $ 1 $ 5,056 $ 51,842 $ 1,177 $ 4,754 $ 1,635 $ 3,118 $ 4,753 $ 1
v3.25.4
Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Statement of Cash Flows [Abstract]      
Net proceeds related to the sale of certain tax credits $ 723 $ 558 $ 28
v3.25.4
Condensed Consolidated Statements of Cash Flows - Duke Energy Carolinas (Parenthetical) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Net proceeds related to the sale of certain tax credits $ 723 $ 558 $ 28
Duke Energy Carolinas      
Net proceeds related to the sale of certain tax credits $ 551 $ 440 $ 0
v3.25.4
Condensed Consolidated Statements of Cash Flows - Progress Energy (Parenthetical) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Net proceeds related to the sale of certain tax credits $ 723 $ 558 $ 28
Progress Energy      
Net proceeds related to the sale of certain tax credits $ 171 $ 118 $ 28
v3.25.4
Condensed Consolidated Statements of Cash Flows - Duke Energy Progress (Parenthetical) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Net proceeds related to the sale of certain tax credits $ 723 $ 558 $ 28
Duke Energy Progress      
Net proceeds related to the sale of certain tax credits $ 102 $ 71 $ 0
v3.25.4
Condensed Consolidated Statements of Cash Flows - Duke Energy Florida (Parenthetical) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Net proceeds related to the sale of certain tax credits $ 723 $ 558 $ 28
Duke Energy Florida      
Net proceeds related to the sale of certain tax credits $ 69 $ 47 $ 28
v3.25.4
Summary of Significant Accounting Policies
 12 Months Ended
Dec. 31, 2025
Accounting Policies [Abstract]  
Summary of Significant Accounting Policies SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Nature of Operations and Basis of Consolidation
Duke Energy is an energy company headquartered in Charlotte, North Carolina, subject to regulation by the FERC and other regulatory agencies listed below. Duke Energy operates in the U.S. primarily through its direct and indirect subsidiaries. Certain Duke Energy subsidiaries are also subsidiary registrants, including Duke Energy Carolinas; Progress Energy; Duke Energy Progress; Duke Energy Florida; Duke Energy Ohio; Duke Energy Indiana and Piedmont. When discussing Duke Energy’s consolidated financial information, it necessarily includes the results of its separate Subsidiary Registrants, which along with Duke Energy, are collectively referred to as the Duke Energy Registrants.
The information in these combined notes relates to each of the Duke Energy Registrants as noted in the Index to Combined Notes to Consolidated Financial Statements. However, none of the Subsidiary Registrants make any representation as to information related solely to Duke Energy or the Subsidiary Registrants of Duke Energy other than itself.
These Consolidated Financial Statements include, after eliminating intercompany transactions and balances, the accounts of the Duke Energy Registrants and subsidiaries or VIEs where the respective Duke Energy Registrants have control. See Note 18 for additional information on VIEs. These Consolidated Financial Statements also reflect the Duke Energy Registrants’ proportionate share of certain jointly owned generation and transmission facilities. See Note 9 for additional information on joint ownership. Substantially all of the Subsidiary Registrants' operations qualify for regulatory accounting.
Duke Energy Carolinas is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Carolinas is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC.
Progress Energy is a public utility holding company, which conducts operations through its subsidiaries, Duke Energy Progress and Duke Energy Florida. Progress Energy is subject to regulation by the NCUC, PSCSC, FPSC, NRC and FERC.
Duke Energy Progress is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Progress is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC.
Duke Energy Florida is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Florida. Duke Energy Florida is subject to the regulatory provisions of the FPSC, NRC and FERC.
Duke Energy Ohio is a regulated public utility primarily engaged in the transmission and distribution of electricity in portions of Ohio and Kentucky, the generation and sale of electricity in portions of Kentucky and the transportation and sale of natural gas in portions of Ohio and Kentucky. Duke Energy Ohio conducts competitive auctions for retail electricity supply in Ohio whereby the energy price is recovered from retail customers and recorded in Operating Revenues on the Consolidated Statements of Operations and Comprehensive Income. Operations in Kentucky are conducted through Duke Energy Ohio's wholly owned subsidiary, Duke Energy Kentucky. References herein to Duke Energy Ohio collectively include Duke Energy Ohio and its subsidiaries, unless otherwise noted. Duke Energy Ohio is subject to the regulatory provisions of the PUCO, KPSC and FERC.
Duke Energy Indiana is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Indiana. Duke Energy Indiana is subject to the regulatory provisions of the IURC and FERC.
Piedmont is a regulated public utility primarily engaged in the distribution of natural gas in portions of North Carolina, South Carolina and Tennessee. Piedmont is subject to the regulatory provisions of the NCUC, PSCSC, TPUC and FERC.
Certain prior year amounts have been reclassified to conform to the current year presentation.
Other Current Assets and Liabilities
The following table provides a description of amounts included in Other within Current Assets or Current Liabilities that exceed 5% of total Current Assets or Current Liabilities on the Duke Energy Registrants' Consolidated Balance Sheets at either December 31, 2025, or 2024.
December 31,
(in millions)Location20252024
Duke Energy Carolinas
Accrued compensation Current Liabilities$302 $234 
Progress Energy  
Customer deposits/Collateral liabilitiesCurrent Liabilities$293 $281 
Duke Energy Progress  
Accrued compensationCurrent Liabilities$143 $114 
Duke Energy Florida  
Tax receivables
Current Assets
$12 $166 
Customer deposits/Collateral liabilities
Current Liabilities191 164 
Duke Energy Indiana  
Customer advances
Current Liabilities
$117 $100 
Discontinued Operations and Held For Sale
Duke Energy has elected to present cash flows of discontinued operations combined with cash flows of continuing operations. For all periods presented, unless otherwise noted, the disclosures related to balance sheet activity exclude amounts presented as held for sale and disclosures related to income statement activity exclude amounts related to discontinued operations. For the years ended December 31, 2024 and 2023, the Income (Loss) From Discontinued Operations, net of tax on Duke Energy's Consolidated Statements of Operations includes amounts related to NCI. A portion of NCI on Duke Energy's Consolidated Balance Sheet as of December 31, 2024 relates to discontinued operations. See Note 2 for discussion of discontinued operations related to the Commercial Renewables Disposal Groups.
Significant Accounting Policies
Use of Estimates
In preparing financial statements that conform to GAAP, the Duke Energy Registrants must make estimates and assumptions that affect the reported amounts of assets and liabilities, the reported amounts of revenues and expenses and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.
Regulatory Accounting
The majority of the Duke Energy Registrants’ operations are subject to price regulation for the sale of electricity and natural gas by state utility commissions or FERC. When prices are set on the basis of specific costs of the regulated operations and an effective franchise is in place such that sufficient electric services or natural gas can be sold to recover those costs, the Duke Energy Registrants apply regulatory accounting. Regulatory accounting changes the timing of the recognition of costs or revenues relative to a company that does not apply regulatory accounting. As a result, regulatory assets and regulatory liabilities are recognized on the Consolidated Balance Sheets. Regulatory assets and liabilities are amortized consistent with the treatment of the related cost in the ratemaking process. Regulatory assets are reviewed for recoverability each reporting period. If a regulatory asset is no longer deemed probable of recovery, the deferred cost is charged to earnings. See Note 4 for further information.
Regulatory accounting rules also require recognition of a disallowance (also called "impairment") loss if it becomes probable that part of the cost of a plant under construction (or a recently completed plant or an abandoned plant) will be disallowed for ratemaking purposes and a reasonable estimate of the amount of the disallowance can be made. For example, if a cost cap is set for a plant still under construction, the amount of the disallowance is a result of a judgment as to the ultimate cost of the plant. These disallowances can require judgments on allowed future rate recovery.
When it becomes probable that regulated generation, transmission or distribution assets will be abandoned, the cost of the asset is removed from plant in service. The value that may be retained as a regulatory asset on the balance sheet for the abandoned property is dependent upon amounts that may be recovered through regulated rates, including any return. As such, an impairment charge could be partially or fully offset by the establishment of a regulatory asset if rate recovery is probable. The impairment charge for a disallowance of costs for regulated plants under construction, recently completed or abandoned is based on discounted cash flows.
The Duke Energy Registrants utilize cost-tracking mechanisms, commonly referred to as fuel adjustment clauses or PGA clauses. These clauses allow for the recovery of fuel and fuel-related costs, portions of purchased power, natural gas costs and hedging costs through surcharges on customer rates. The difference between the costs incurred and the surcharge revenues is recorded either as an adjustment to Operating Revenues, Operating Expenses – Fuel used in electric generation or Operating Expenses – Cost of natural gas on the Consolidated Statements of Operations, with an off-setting impact on regulatory assets or liabilities.
Cash, Cash Equivalents and Restricted Cash
All highly liquid investments with maturities of three months or less at the date of acquisition are considered cash equivalents. Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress and Duke Energy Florida have restricted cash balances related primarily to collateral assets, escrow deposits and VIEs. See Note 18 for additional information. Restricted cash amounts are included in Other within Current Assets and Other Noncurrent Assets on the Consolidated Balance Sheets. The following table presents the components of cash, cash equivalents and restricted cash included on the Consolidated Balance Sheets.
December 31, 2025December 31, 2024
DukeDukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyDukeEnergyProgressEnergyEnergy
(in millions)
EnergyCarolinasEnergyProgressFloridaEnergyCarolinasEnergyProgressFlorida
Current Assets
Cash and cash equivalents$245 $3 $54 $16 $21 $314 $6 $73 $24 $33 
Other84 12 71 38 34 84 9 76 40 35 
Other Noncurrent Assets
Other34 7 14 7 7 20 1 11 5 7 
Total cash, cash equivalents and restricted cash$363 $22 $139 $61 $62 $418 $16 $160 $69 $75 
Inventory
Inventory related to regulated operations is valued at historical cost. Inventory is charged to expense or capitalized to property, plant and equipment when issued, primarily using the average cost method. Excess or obsolete inventory is written down to the lower of cost or net realizable value. Once inventory has been written down, it creates a new cost basis for the inventory that is not subsequently written up. Provisions for inventory write-offs were not material at December 31, 2025, and 2024, respectively. The components of inventory are presented in the tables below.
 December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Materials and supplies $3,542 $1,157 $1,789 $1,109 $680 $155 $398 $10 
Coal 715 328 235 155 80 21 131 — 
Natural gas, oil and other 312 45 186 99 87 11 2 67 
Total inventory $4,569 $1,530 $2,210 $1,363 $847 $187 $531 $77 
 December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Materials and supplies $3,386 $1,150 $1,649 $1,074 $576 $149 $389 $11 
Coal801 341 241 164 77 23 196 — 
Natural gas, oil and other309 45 196 103 92 11 1 55 
Total inventory $4,496 $1,536 $2,086 $1,341 $745 $183 $586 $66 
Investments in Debt and Equity Securities
The Duke Energy Registrants classify investments in equity securities as FV-NI and investments in debt securities as AFS. Both categories are recorded at fair value on the Consolidated Balance Sheets. Realized and unrealized gains and losses on securities classified as FV-NI are reported through net income. Unrealized gains and losses for debt securities classified as AFS are included in AOCI until realized, unless it is determined the carrying value of an investment has a credit loss. For certain investments of regulated operations, such as substantially all of the NDTF, realized and unrealized gains and losses (including any credit losses) on debt securities are recorded as a regulatory asset or liability. The credit loss portion of debt securities of nonregulated operations are included in earnings. Investments in debt and equity securities are classified as either current or noncurrent based on management’s intent and ability to sell these securities, taking into consideration current market liquidity. See Note 16 for further information.
Goodwill
Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont perform annual goodwill impairment tests as of August 31 each year at the reporting unit level, which is determined to be a business segment or one level below. Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont update these tests between annual tests if events or circumstances occur that would more likely than not reduce the fair value of a reporting unit below its carrying value. See Note 12 for further information.
Intangible Assets
Intangible assets are included in Other in Other Noncurrent Assets on the Consolidated Balance Sheets. Generally, intangible assets are amortized using an amortization method that reflects the pattern in which the economic benefits of the intangible asset are consumed or on a straight-line basis if that pattern is not readily determinable. Amortization of intangibles is reflected in Depreciation and amortization on the Consolidated Statements of Operations. Intangible assets are subject to impairment testing and, if impaired, the carrying value is accordingly reduced.
Renewable energy certificates are used to measure compliance with renewable energy standards and are held primarily for consumption. See Note 12 for further information.
Long-Lived Asset Impairments
The Duke Energy Registrants evaluate long-lived assets that are held and used, excluding goodwill, for impairment when circumstances indicate the carrying value of those assets may not be recoverable. An impairment exists when a long-lived asset’s carrying value exceeds the estimated undiscounted cash flows expected to result from the use and eventual disposition of the asset. The estimated cash flows may be based on alternative expected outcomes that are probability weighted. If the carrying value of the long-lived asset is not recoverable based on these estimated future undiscounted cash flows, the carrying value of the asset is written down to its then current estimated fair value and an impairment charge is recognized.
The Duke Energy Registrants assess fair value of long-lived assets that are held and used using various methods, including recent comparable third-party sales, internally developed discounted cash flow analysis and analysis from outside advisors. Triggering events to reassess cash flows may include, but are not limited to, significant changes in commodity prices, the condition of an asset or management’s interest in selling the asset.
Property, Plant and Equipment
Property, plant and equipment are stated at the lower of depreciated historical cost net of any disallowances or fair value, if impaired. The Duke Energy Registrants capitalize all construction-related direct labor and material costs, as well as indirect construction costs such as general engineering, taxes and financing costs. See “Allowance for Funds Used During Construction and Interest Capitalized” section below for information on capitalized financing costs. Costs of renewals and betterments that extend the useful life of property, plant and equipment are also capitalized. The cost of repairs, replacements and major maintenance projects that do not extend the useful life or increase the expected output of the asset are expensed as incurred. Depreciation is generally computed over the estimated useful life of the asset using the composite straight-line method. Depreciation studies are conducted periodically to update composite rates and are approved by state utility commissions and/or the FERC when required. The composite weighted average depreciation rates, excluding nuclear fuel, are included in the table that follows.
 Years Ended December 31,
 202520242023
Duke Energy 3.1 %3.0 %2.9 %
Duke Energy Carolinas 3.1 %3.1 %2.7 %
Progress Energy 3.2 %3.3 %3.3 %
Duke Energy Progress 3.2 %3.2 %3.1 %
Duke Energy Florida 3.2 %3.5 %3.5 %
Duke Energy Ohio 2.9 %2.9 %2.8 %
Duke Energy Indiana 4.3 %3.6 %3.6 %
Piedmont2.2 %2.2 %2.1 %
In general, when the Duke Energy Registrants retire regulated property, plant and equipment, the original cost plus the cost of retirement, less salvage value and any depreciation already recognized, is charged to accumulated depreciation. However, when it becomes probable the asset will be retired substantially in advance of its original expected useful life or is abandoned, the cost of the asset and the corresponding accumulated depreciation is recognized as a separate asset. If the asset is still in operation, the net amount is classified as Facilities to be retired, net on the Consolidated Balance Sheets. If the asset is no longer operating, the net amount is classified in Regulatory assets on the Consolidated Balance Sheets if deemed recoverable (see discussion of long-lived asset impairments above). The carrying value of the asset is based on historical cost if the Duke Energy Registrants are allowed to recover the remaining net book value and a return equal to at least the incremental borrowing rate. If not, an impairment is recognized to the extent the net book value of the asset exceeds the present value of future revenues discounted at the incremental borrowing rate.
When the Duke Energy Registrants sell entire regulated operating units, the original cost and accumulated depreciation and amortization balances are removed from Property, Plant and Equipment on the Consolidated Balance Sheets. Any gain or loss is recorded in earnings, unless otherwise required by the applicable regulatory body. See Note 11 for additional information.
Other Noncurrent Assets
Duke Energy, through a nonregulated subsidiary, was the winner of the Carolina Long Bay offshore wind auction in May 2022. The historical cost of the rights acquired from the auction, totaling $150 million is recorded in Other within Other noncurrent assets on Duke Energy's Consolidated Balance Sheets as of December 31, 2025, and 2024.
Leases
Duke Energy determines if an arrangement is a lease at contract inception based on whether the arrangement involves the use of a physically distinct identified asset and whether Duke Energy has the right to obtain substantially all of the economic benefits from the use of the asset throughout the period as well as the right to direct the use of the asset. As a policy election, Duke Energy does not evaluate arrangements with initial contract terms of less than one year as leases.
Operating leases are included in Operating lease ROU assets, net, Other current liabilities and Operating lease liabilities on the Consolidated Balance Sheets. Finance leases are included in Property, Plant and Equipment, Current maturities of long-term debt and Long-Term Debt on the Consolidated Balance Sheets.
For lessee and lessor arrangements, Duke Energy has elected a policy to not separate lease and non-lease components for all asset classes. For lessor arrangements, lease and non-lease components are only combined under one arrangement and accounted for under the lease accounting framework if the non-lease components are not the predominant component of the arrangement and the lease component would be classified as an operating lease.
Nuclear Fuel
Nuclear fuel is classified as Property, Plant and Equipment on the Consolidated Balance Sheets.
Nuclear fuel in the front-end fuel processing phase is considered work in progress and not amortized until placed in service. Amortization of nuclear fuel is included within Fuel used in electric generation and purchased power on the Consolidated Statements of Operations. Amortization is recorded using the units-of-production method.
Allowance for Funds Used During Construction and Interest Capitalized
For regulated operations, the debt and equity costs of financing the construction of property, plant and equipment are reflected as AFUDC and capitalized as a component of the cost of property, plant and equipment. AFUDC equity is reported on the Consolidated Statements of Operations as non-cash income in Other income and expenses, net. AFUDC debt is reported as a non-cash offset to Interest Expense. After construction is completed, the Duke Energy Registrants are permitted to recover these costs through their inclusion in rate base and the corresponding subsequent depreciation or amortization of those regulated assets.
AFUDC equity, a permanent difference for income taxes, reduces the ETR when capitalized and increases the ETR when depreciated or amortized. See Note 24 for additional information.
Asset Retirement Obligations
AROs are recognized for legal obligations associated with the retirement of property, plant and equipment. When recording an ARO, the present value of the projected liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made. The liability is accreted over time. For operating plants, the present value of the liability is added to the cost of the associated asset and depreciated over the remaining life of the asset. For retired plants, the present value of the liability is recorded as a regulatory asset unless determined not to be probable of recovery.
The present value of the initial obligation and subsequent updates are based on discounted cash flows, which include estimates regarding timing of future cash flows, selection of discount rates and cost escalation rates, among other factors. These estimates are subject to change. Depreciation expense is adjusted prospectively for any changes to the carrying amount of the associated asset. The Duke Energy Registrants receive amounts to fund the cost of the ARO for regulated operations through a combination of regulated revenues and earnings on the NDTF. As a result, amounts recovered in regulated revenues, earnings on the NDTF, accretion expense and depreciation of the associated asset are netted and deferred as a regulatory asset or liability.
Accounts Payable
Duke Energy has a voluntary supply chain finance program (the “program”) that allows Duke Energy suppliers, at their sole discretion, to sell their receivables from Duke Energy to a global financial institution at a rate that leverages Duke Energy’s credit rating and, which may result in favorable terms compared to the rate available to the supplier on their own credit rating. Suppliers participating in the program, determine at their sole discretion which invoices they will sell to the financial institution. Suppliers’ decisions on which invoices are sold do not impact Duke Energy’s payment terms, which are based on commercial terms negotiated between Duke Energy and the supplier regardless of program participation. The commercial terms negotiated between Duke Energy and its suppliers are consistent regardless of whether the supplier elects to participate in the program. Duke Energy does not issue any guarantees with respect to the program and does not participate in negotiations between suppliers and the financial institution. Duke Energy does not have an economic interest in the supplier’s decision to participate in the program and receives no interest, fees or other benefit from the financial institution based on supplier participation in the program.
The following table presents the amounts included within Accounts payable on the Consolidated Balance Sheets sold to the financial institution by our suppliers and the supplier invoices sold to the financial institution under the program included within Net cash provided by operating activities on the Consolidated Statements of Cash Flows as of December 31, 2025, and December 31, 2024.
 For the Years Ended December 31, 2024 and 2025
Duke
(in millions) EnergyPiedmont
Confirmed obligations outstanding at December 31, 2023
$50 $47 
Invoices confirmed during the period
156 152 
Confirmed invoices paid during the period
(193)(187)
Confirmed obligations outstanding at December 31, 2024
$13 $12 
Invoices confirmed during the period
71 69 
Confirmed invoices paid during the period
(61)(58)
Confirmed obligations outstanding at December 31, 2025
$23 $23 
Revenue Recognition
Duke Energy recognizes revenue as customers obtain control of promised goods and services in an amount that reflects consideration expected in exchange for those goods or services. Generally, the delivery of electricity and natural gas results in the transfer of control to customers at the time the commodity is delivered and the amount of revenue recognized is equal to the amount billed to each customer, including estimated volumes delivered when billings have not yet occurred. See Note 19 for further information.
Alternative Revenue Programs
Duke Energy accounts for certain types of programs established by the regulators in the states in which it operates, including decoupling mechanisms, as alternative revenue programs. Alternative revenue programs are contracts between an entity and its regulator, not a contract between an entity and a customer. Revenue arising from alternative revenue programs is presented as Regulated electric revenues and Regulated natural gas revenues on the Consolidated Statements of Operations. Revenue from alternative revenue programs is recognized in the period they are earned (i.e., during the period of revenue shortfall or excess due to fluctuations in customer usage or when specific targets are met resulting in the achievement of performance incentives or penalties) and a regulatory asset or liability on the Consolidated Balance Sheets is established, which is subsequently billed or refunded to customers. Duke Energy recognizes revenue as alternative revenue programs for programs that have been authorized for rate recovery, are objectively determinable and probable of recovery, and are expected to be collected within 24 months. See Note 19 for disaggregated revenue information including revenue from contracts with customers and revenues recognized as alternative revenue programs.
Derivatives and Hedging
Derivative and non-derivative instruments may be used in connection with commodity price and interest rate activities, including swaps, futures, forwards and options. All derivative instruments, except those that qualify for the NPNS exception, are recorded on the Consolidated Balance Sheets at fair value. Qualifying derivative instruments may be designated as either cash flow hedges or fair value hedges. Other derivative instruments (undesignated contracts) either have not been designated or do not qualify as hedges. The effective portion of the change in the fair value of cash flow hedges is recorded in AOCI. The effective portion of the change in the fair value of a fair value hedge is offset in net income by changes in the hedged item. For activity subject to regulatory accounting, gains and losses on derivative contracts are reflected as regulatory assets or liabilities and not as other comprehensive income or current period income. As a result, changes in fair value of these derivatives have no immediate earnings impact.
Formal documentation, including transaction type and risk management strategy, is maintained for all contracts accounted for as a hedge. At inception and at least every three months thereafter, the hedge contract is assessed to see if it is highly effective in offsetting changes in cash flows or fair values of hedged items.
See Note 15 for further information.
Captive Insurance Reserves
Duke Energy has captive insurance subsidiaries that provide coverage, on an indemnity basis, to the Subsidiary Registrants as well as certain third parties, on a limited basis, for financial losses, primarily related to property, workers’ compensation and general liability. Liabilities include provisions for estimated losses incurred but not reported (IBNR), as well as estimated provisions for known claims. IBNR reserve estimates are primarily based upon historical loss experience, industry data and other actuarial assumptions. Reserve estimates are adjusted in future periods as actual losses differ from experience.
Duke Energy, through its captive insurance entities, also has reinsurance coverage with third parties for certain losses above a per occurrence and/or aggregate retention. Receivables for reinsurance coverage are recognized when realization is deemed probable.
Preferred Stock
Preferred stock is reviewed to determine the appropriate balance sheet classification and embedded features, such as call options, are evaluated to determine if they should be bifurcated and accounted for separately. Costs directly related to the issuance of preferred stock are recorded as a reduction of the proceeds received. The liability for the dividend is recognized when declared. The accumulated dividends on the cumulative preferred stock is recognized to net income available to Duke Energy Corporation in the EPS calculation. See Note 20 for further information.
Loss Contingencies and Environmental Liabilities
Contingent losses are recorded when it is probable a loss has occurred and the loss can be reasonably estimated. When a range of the probable loss exists and no amount within the range is a better estimate than any other amount, the minimum amount in the range is recorded. Unless otherwise required by GAAP, legal fees are expensed as incurred.
Environmental liabilities are recorded on an undiscounted basis when environmental remediation or other liabilities become probable and can be reasonably estimated. Environmental expenditures related to past operations that do not generate current or future revenues are expensed. Environmental expenditures related to operations that generate current or future revenues are expensed or capitalized, as appropriate. Certain environmental expenditures receive regulatory accounting treatment and are recorded as regulatory assets.
See Notes 4 and 5 for further information.
Severance and Special Termination Benefits
Duke Energy maintains severance plans for the general employee population under which, in general, the longer a terminated employee worked prior to termination the greater the amount of severance benefits provided. A liability for involuntary severance is recorded once an involuntary severance plan is committed to by management if involuntary severances are probable and can be reasonably estimated. For involuntary severance benefits incremental to its ongoing severance plan benefits, the fair value of the obligation is expensed at the communication date if there are no future service requirements or over the required future service period. Duke Energy also offers special termination benefits under voluntary severance programs. Special termination benefits are recorded immediately upon employee acceptance absent a significant retention period. Otherwise, the cost is recorded over the remaining service period. Employee acceptance of voluntary severance benefits is determined by management based on the facts and circumstances of the benefits being offered. See Note 21 for further information.
Guarantees
If necessary, liabilities are recognized at the time of issuance or material modification of a guarantee for the estimated fair value of the obligation it assumes. Fair value is estimated using a probability weighted approach. The obligation is reduced over the term of the guarantee or related contract in a systematic and rational method as risk is reduced. Duke Energy recognizes a liability for the best estimate of its loss due to the nonperformance of the guaranteed party. This liability is recognized at the inception of a guarantee and is updated periodically. See Note 8 for further information.
Income Taxes
Duke Energy and its subsidiaries file a consolidated federal income tax return and other state and foreign jurisdictional returns. The Subsidiary Registrants are parties to a tax-sharing agreement with Duke Energy. Income taxes recorded represent amounts the Subsidiary Registrants would incur as separate C-Corporations. Deferred income taxes have been provided for temporary differences between GAAP and tax bases of assets and liabilities because the differences create taxable or tax-deductible amounts for future periods. ITCs associated with regulated operations are deferred and amortized as a reduction of income tax expense over the estimated useful lives of the related properties. PTCs associated with regulated operations reduce income tax expense or are deferred and amortized as a reduction of income tax expense over a period of time that is agreed upon by the regulatory authorities and the Subsidiary Registrants.
Accumulated deferred income taxes are valued using the enacted tax rate expected to apply to taxable income in the periods in which the deferred tax asset or liability is expected to be settled or realized. In the event of a change in tax rates, deferred tax assets and liabilities are remeasured as of the enactment date of the new rate. To the extent that the change in the value of the deferred tax represents an obligation to customers, the impact of the remeasurement is deferred to a regulatory liability. Remaining impacts are recorded in income from continuing operations. Duke Energy's results of operations could be impacted if the estimate of the tax effect of reversing temporary differences is not reflective of actual outcomes, is modified to reflect new developments or interpretations of the tax law, revised to incorporate new accounting principles, or changes in the expected timing or manner of a reversal.
Tax-related interest and penalties are recorded in Interest Expense and Other income and expenses, net on the Consolidated Statements of Operations.
See Note 24 for further information.
Excise Taxes
Certain excise taxes levied by state or local governments are required to be paid even if not collected from the customer. These taxes are recognized on a gross basis. Taxes for which Duke Energy operates merely as a collection agent for the state and local government are accounted for on a net basis. Excise taxes accounted for on a gross basis within both Operating Revenues and Property and other taxes on the Consolidated Statements of Operations were as follows.
Years Ended December 31,
(in millions) 202520242023
Duke Energy $447 $423 $458 
Duke Energy Carolinas 27 31 27 
Progress Energy 307 285 322 
Duke Energy Progress 8 9 5 
Duke Energy Florida 299 276 317 
Duke Energy Ohio 110 105 106 
Duke Energy Indiana — — 1 
Piedmont3 2 2 
Dividend Restrictions and Unappropriated Retained Earnings
Duke Energy does not have any current legal, regulatory or other restrictions on paying common stock dividends to shareholders. However, if Duke Energy were to defer dividend payments on the preferred stock, the declaration of common stock dividends would be prohibited. See Note 20 for more information. Additionally, as further described in Note 4, Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio, Duke Energy Indiana and Piedmont have restrictions on paying dividends or otherwise advancing funds to Duke Energy due to conditions established by regulators in conjunction with merger transaction approvals. At December 31, 2025, and 2024, an insignificant amount of Duke Energy’s consolidated Retained earnings balance represents undistributed earnings of equity method investments.
New Accounting Standards
Other than implementation of the enhanced income tax disclosure requirements as described in Note 24, no new accounting standards were adopted by any of the Duke Energy Registrants in 2025.
The following new accounting standard has been issued but not yet adopted by the Duke Energy Registrants as of December 31, 2025.
Disaggregation of Income Statement Expenses. In November 2024, the FASB issued new accounting guidance that requires disclosure of disaggregated information for certain cost and expense categories. This new guidance does not change the expense captions presented on the Consolidated Statements of Operations but requires disaggregation of certain expense captions into specified categories in disclosures within the notes to the financial statements. For Duke Energy Registrants, the amendments will be effective for fiscal years beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027, with early adoption permitted. Duke Energy is currently assessing implementation of this guidance on the financial statement disclosures and expects it will have no impact on the results of operations, cash flows or financial condition.
v3.25.4
Dispositions
 12 Months Ended
Dec. 31, 2025
Discontinued Operations and Disposal Groups [Abstract]  
Dispositions DISPOSITIONS
Minority Interest in Florida Progress
On August 4, 2025, Duke Energy, Progress Energy and Florida Progress, LLC (Florida Progress), the holding company of Duke Energy Florida, entered into an investment agreement with an affiliate of Brookfield Super-Core Infrastructure Partners (Investor), pursuant to which Florida Progress agreed to issue up to 19.7% of its issued and outstanding membership interests to Investor following a series of closings, for an aggregate investment of $6 billion, subject to certain adjustments. At the first closing, Florida Progress will issue to Investor 9.2% of the Florida Progress membership interests for $2.8 billion (subject to adjustment). The first closing will be followed by additional closings with investments occurring no later than on the following timeline: (i) Investor will invest an additional $200 million in Florida Progress no later than December 31, 2026; (ii) Investor will invest an additional $500 million in Florida Progress no later than June 30, 2027; (iii) Investor will invest an additional $1.5 billion in Florida Progress no later than December 31, 2027; and (iv) Investor will invest an additional $1 billion in Florida Progress no later than June 30, 2028. Investor's ownership interest in Florida Progress will proportionally increase with each such investment that is made by Investor. Following the first closing, Investor has the option to fund the subsequent investments, and acquire the corresponding additional membership interests, earlier than the timeline described above. The transaction is subject to the satisfaction of certain customary conditions described in the investment agreement, including receipt of the approval of the FERC and completion of review by the Committee on Foreign Investments in the United States (CFIUS), as well as approval, or determination that the transaction does not require approval, by the NRC. Approval for the transaction was received from FERC and CFIUS in December 2025 and January 2026, respectively. On February 17, 2026, the NRC issued a written threshold determination that the transactions do not constitute a direct or indirect transfer of control of any license issued by the NRC, which constitutes the final condition required to be met prior to the first closing. The investment agreement also provides that, upon termination of the investment agreement under certain specified circumstances prior to the first closing, Investor would be required to pay Progress Energy a termination fee of $240 million.
Proceeds from the minority interest investment are expected to be used to efficiently fund Duke Energy’s growing capital and investment expenditures plan, primarily by displacing certain previously planned issuances of long-term debt and common equity.
The investment agreement limits Florida Progress’ ability to declare dividends before the first closing. The parties intend for the first closing to occur in March 2026. Following the first closing, Investor will receive certain limited rights commensurate with its eventual anticipated 19.7% investment in Florida Progress. Duke Energy and Progress Energy will retain control of Florida Progress, so no gain or loss is expected to be recognized on the Consolidated Statements of Operations. The investment will be presented as noncontrolling interest within stockholders' equity.
Sale of Piedmont's Tennessee Business
In July 2025, Piedmont entered into a purchase agreement with Spire Inc., a Missouri corporation, for the sale of Piedmont's Tennessee business with expected proceeds of $2.48 billion, subject to closing adjustments, with proceeds due at closing. Piedmont’s Tennessee business is included within the GU&I segment of Duke Energy and Piedmont. Completion of the transaction is subject to customary closing conditions, including approval from the TPUC. An evidentiary hearing was held on February 17, 2026, and a decision from the TPUC is anticipated on March 16, 2026. Subject to TPUC approval, Piedmont expects to complete the sale on March 31, 2026. The purchase agreement contains certain termination rights and provides that Spire Inc. may be required to pay a termination fee for an amount equal to 6.5% of the purchase price to Piedmont upon termination of the purchase agreement under certain circumstances. Proceeds from the sale are expected to be used for debt reduction at Piedmont and to efficiently fund Duke Energy's capital plan, primarily by displacing the issuance of common equity in the near term.
In the third quarter of 2025, Duke Energy and Piedmont reclassified the Piedmont Tennessee Disposal Group to assets held for sale. Piedmont ceased recording depreciation and amortization on long-lived assets of the Piedmont Tennessee Disposal Group upon meeting the held for sale criteria.
Sale of Commercial Renewables Segment
The Commercial Renewables Disposal Groups were classified as held for sale and as discontinued operations in the fourth quarter of 2022.
In 2023, Duke Energy completed the sale of substantially all the assets in the Commercial Renewables business segment. Duke Energy closed on the transaction with an affiliate of Brookfield Renewable Partners L.P. on October 25, 2023, for proceeds of $1.1 billion, with approximately half of the proceeds received at closing and the remainder due 18 months after closing. The balance of the remaining proceeds of $551 million is included in Receivable from sales of Commercial Renewables Disposal Groups, as of December 31, 2024, on Duke Energy's Consolidated Balance Sheets. On April 28, 2025, Duke Energy received the remaining sale proceeds. In January 2025, a sale of the remaining Commercial Renewables business assets was completed and proceeds from that disposition were not material.
As part of the 2023 purchase and sale agreement for the Commercial Renewables distributed generation group, Duke Energy agreed to retain certain guarantees, with expiration dates between 2029 through 2034, related to tax equity partners' assets and operations disposed of via sale. Duke Energy has obtained certain guarantees from the buyers in regard to future performance obligations to assist in limiting Duke Energy's exposure under the retained guarantees. The fair value of the guarantees is immaterial as Duke Energy does not believe conditions are likely for performance under these guarantees.
Assets Held for Sale
The following table presents the carrying values of the major classes of Assets held for sale and Liabilities associated with assets held for sale included in Duke Energy's and Piedmont's Consolidated Balance Sheets.
December 31, 2025
Piedmont
Duke Energy
(in millions)
Piedmont Tennessee Disposal Group
Piedmont Tennessee Disposal Group
Commercial Renewables Disposal Groups
Total
Current Assets Held for Sale
Receivables, net$82 $82 $— $82 
Inventory12 12 — 12 
Other15 15 — 15 
Total current assets held for sale109 109 — 109 
Noncurrent Assets Held for Sale
Property, Plant and Equipment
Cost2,219 2,219 — 2,219 
Accumulated depreciation and amortization(406)(406)— (406)
Net property, plant and equipment1,813 1,813 — 1,813 
Goodwill
10 294 — 294 
Regulatory assets
41 41 — 41 
Total noncurrent assets held for sale
1,864 2,148 — 2,148 
Total Assets Held for Sale$1,973 $2,257 $— $2,257 
Current Liabilities Associated with Assets Held for Sale
Accounts payable$58 $58 $18 $76 
Other8 8 — 8 
Total current liabilities associated with assets held for sale66 66 18 84 
Noncurrent Liabilities Associated with Assets Held for Sale
Asset retirement obligations4 4 — 4 
Regulatory liabilities
161 161 — 161 
Other5 5 — 5 
Total noncurrent liabilities associated with assets held for sale
170 170 — 170 
Total Liabilities Associated with Assets Held for Sale$236 $236 $18 $254 
December 31, 2024
Piedmont
Duke Energy
(in millions)
Piedmont Tennessee Disposal Group
Piedmont Tennessee Disposal Group
Commercial Renewables Disposal Groups
Total
Current Assets Held for Sale
Receivables, net$64 $64 $— $64 
Inventory12 12 — 12 
Other16 16 4 20 
Total current assets held for sale92 92 4 96 
Noncurrent Assets Held for Sale
Property, Plant and Equipment
Cost2,069 2,069 109 2,178 
Accumulated depreciation and amortization(392)(392)(24)(416)
Net property, plant and equipment1,677 1,677 85 1,762 
Goodwill
10 294 — 294 
Regulatory assets
35 35 — 35 
Operating lease right-of-use assets, net— — 4 4 
Total noncurrent assets held for sale
1,722 2,006 89 2,095 
Total Assets Held for Sale$1,814 $2,098 $93 $2,191 
Current Liabilities Associated with Assets Held for Sale
Accounts payable$42 $42 $19 $61 
Taxes accrued1 1 1 2 
Current maturities of long-term debt
— — 43 43 
Unrealized losses on commodity hedges
— — 13 13 
Other9 9 4 13 
Total current liabilities associated with assets held for sale52 52 80 132 
Noncurrent Liabilities Associated with Assets Held for Sale
Asset retirement obligations4 4 5 9 
Regulatory liabilities
173 173 — 173 
Operating lease liabilities— — 5 5 
Unrealized losses on commodity hedges
— — 66 66 
Other5 5 13 18 
Total noncurrent liabilities associated with assets held for sale
182 182 89 271 
Total Liabilities Associated with Assets Held for Sale$234 $234 $169 $403 
Approximately $18 million of NCI included within Equity on the Duke Energy Consolidated Balance Sheets relates to the Commercial Renewables Disposal Groups as of December 31, 2024.
DISCONTINUED OPERATIONS
Unless otherwise noted, the notes to these consolidated financial statements exclude amounts related to discontinued operations for all periods presented.
The following table summarizes the Income (Loss) from Discontinued Operations, net of tax recorded on Duke Energy's Consolidated Statements of Operations:
Years Ended December 31,
(in millions)202520242023
Commercial Renewables Disposal Groups$(1)$12 $(1,457)
Other2 (2)2 
Income (Loss) from Discontinued Operations, net of tax
$1 $10 $(1,455)
Commercial Renewables Disposal Groups
The following table presents the results of the Commercial Renewables Disposal Groups, which are included in Income (Loss) from Discontinued Operations, net of tax in Duke Energy's Consolidated Statements of Operations.
Years Ended December 31,
(in millions)202520242023
Operating revenues$4 $4 $330 
Operation, maintenance and other122302
Property and other taxes— 245
Other income and expenses, net— — (8)
Interest expense— 465
Loss on disposal4 14 1,725 
Loss before income taxes(1)(38)(1,815)
Income tax benefit— (50)(358)
(Loss) Income from discontinued operations
$(1)$12 $(1,457)
Add: Net (income) loss attributable to noncontrolling interest included in discontinued operations
— (3)64 
Net (loss) income from discontinued operations attributable to Duke Energy Corporation
$(1)$9 $(1,393)
No interest from corporate level debt was allocated to discontinued operations.
Cash Flows
Duke Energy has elected not to separately disclose discontinued operations on Duke Energy's Consolidated Statements of Cash Flows. The following table summarizes Duke Energy's cash flows from discontinued operations related to the Commercial Renewables Disposal Groups.
Years Ended December 31,
(in millions)202520242023
Cash flows provided by (used in):
Operating activities$(3)$7 $607 
Investing activities— (13)122 
v3.25.4
Business Segments
 12 Months Ended
Dec. 31, 2025
Segment Reporting [Abstract]  
Business Segments BUSINESS SEGMENTS
Reportable segments are determined based on information used by the chief operating decision-maker (CODM) in deciding how to allocate resources and evaluate the performance of the business. The Duke Energy Registrants' CODM is the Chief Executive Officer. The CODM evaluates segment performance based on segment income for each of the Duke Energy Registrants' reportable business segments in deciding how to allocate resources and evaluate the performance of the business. Segment income is defined as income from continuing operations net of income attributable to NCI and preferred stock dividends. Segment income, as discussed below, includes intercompany revenues and expenses that are eliminated on the Consolidated Financial Statements. Certain governance costs are allocated to each segment. In addition, direct interest expense and income taxes are included in segment income.
Products and services are sold between affiliate companies and reportable segments of Duke Energy at cost. Substantially all assets and revenues from continuing operations for each of the Duke Energy Registrants are within the U.S. Segment assets as presented in the tables that follow exclude all intercompany assets.
Duke Energy
Duke Energy's segment structure includes the following two segments: EU&I and GU&I.
The EU&I segment includes Duke Energy's regulated electric utilities in the Carolinas, Florida and the Midwest. The regulated electric utilities conduct operations through the Subsidiary Registrants that are substantially all regulated and, accordingly, qualify for regulatory accounting treatment.
The GU&I segment includes Piedmont, Duke Energy's natural gas local distribution companies in Ohio and Kentucky, and Duke Energy's natural gas storage, midstream pipeline, and renewable natural gas investments. GU&I's operations are substantially all regulated and, accordingly, qualify for regulatory accounting treatment.
The remainder of Duke Energy’s operations is presented as Other, which is primarily comprised of interest expense on holding company debt, unallocated corporate costs and Duke Energy’s wholly owned captive insurance company, Bison. Other also includes Duke Energy's interest in NMC. See Note 13 for additional information on the investment in NMC.
Business segment information is presented in the following tables.
Year Ended December 31, 2025
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues
$29,297 $2,912 $32,209 $28 $— $32,237 
Intersegment revenues
60 91 151 137 (288)— 
Total operating revenues
$29,357 $3,003 $32,360 $165 $(288)$32,237 
Less:
Fuel used in electric generation and purchased power
$8,138 $— $8,138 $— $(80)$8,058 
Cost of natural gas
— 983 983 — — 983 
Operation, maintenance and other6,414 518 6,932 (35)(199)6,698 
Depreciation and amortization5,605 435 6,040 312 (28)6,324 
Property and other taxes1,418 164 1,582 14 1 1,597 
Impairment of assets and other charges(9)— (9)5 — (4)
Interest expense2,132 267 2,399 1,317 (82)3,634 
Income tax expense (benefit)862 146 1,008 (366)— 642 
Other Segment Items
Noncontrolling interests(a)
104 (1)103 — — 103 
Preferred dividends— — — 56 — 56 
Add: Equity in earnings of unconsolidated affiliates
— 15 15 36 — 51 
Add: Other(b)
644 53 697 117 (100)714 
Segment income (loss)
$5,337 $559 $5,896 $(985)$— $4,911 
Discontinued Operations
1 
Net income available to Duke Energy Corporation Common Stockholders
$4,912 
Add back: Net income attributable to noncontrolling interest
103 
Add back: Preferred dividends
56 
Net Income
$5,071 
Capital investments expenditures and acquisitions$12,553 $1,114 $13,667 $335 $— $14,002 
Segment assets(c)
172,427 18,989 191,416 4,320 — 195,736 
(a)    Net income (loss) attributable to NCI related to continuing operations.
(b)    Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net.
(c)    GU&I includes Assets held for sale balances related to the Piedmont Tennessee Disposal Group. Refer to Note 2 for further information.
Year Ended December 31, 2024
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues
$28,020 $2,299 $30,319 $38 $— $30,357 
Intersegment revenues
73 91 164 119 (283)— 
Total operating revenues
$28,093 $2,390 $30,483 $157 $(283)$30,357 
Less:
Fuel used in electric generation and purchased power
$9,285 $— $9,285 $— $(79)$9,206 
Cost of natural gas
— 565 565 — — 565 
Operation, maintenance and other
5,185 478 5,663 (79)(195)5,389 
Depreciation and amortization5,128 400 5,528 293 (28)5,793 
Property and other taxes
1,305 149 1,454 12 — 1,466 
Impairment of assets and other charges
37 — 37 1 — 38 
Interest expense2,006 256 2,262 1,245 (123)3,384 
Income tax expense (benefit)820 99 919 (329)— 590 
Other Segment Items
Noncontrolling interests(a)
88 (1)87 — — 87 
Preferred dividends— — — 106 — 106 
Preferred redemption costs
— — — 16 — 16 
Add: Equity in (losses) earnings of unconsolidated affiliates
(11)(48)(59)50 — (9)
Add: Other(b)
542 58 600 229 (142)687 
Segment income (loss)(c)(d)(e)
$4,770 $454 $5,224 $(829)$— $4,395 
Discontinued operations7 
Net income available to Duke Energy Corporation Common Stockholders
$4,402 
Add back: Net income attributable to noncontrolling interest
90 
Add back: Preferred dividends
106 
Add back: Preferred redemption costs
$16 
Net Income
$4,614 
Capital investments expenditures and acquisitions
$10,689 $1,313 $12,002 $261 $— $12,263 
Segment assets(f)
164,010 18,131 182,141 4,202 — 186,343 
(a)    Net income (loss) attributable to NCI related to continuing operations.
(b)    Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net.
(c)    EU&I includes the following in the referenced captions on the Consolidated Statements of Operations:
•$42 million recorded within Impairment of assets and other charges, $2 million within Operation, maintenance and other, and an $11 million reduction within Interest Expense related to South Carolinas rate case orders for Duke Energy Carolinas and Duke Energy Progress. See Note 4 for further information.
•$29 million recorded as a reduction of Operating revenues and $4 million as a reduction within Noncontrolling interests related to a Duke Energy Indiana regulatory liability associated with certain employee post-retirement benefits. See Note 4 for further information.
•$17 million recorded as a reduction of Operating revenues related to nonrecurring customer billing adjustments as a result of implementation of a new customer system.
•$15 million recorded within Equity in (losses) earnings of unconsolidated affiliates, primarily related to impairments for certain joint venture electric transmission projects, and $4 million within Gains on sales of other assets and other, net.
(d)    GU&I includes $1 million recorded within Operation, maintenance and other and $3 million as a charge within Other income and expenses on the Consolidated Statements of Operations related to nonrecurring customer billing adjustments as a result of implementation of a new customer system. Additionally, GU&I includes $54 million recorded within Equity in (losses) earnings of unconsolidated affiliates on the Consolidated Statements of Operations related to impairments for certain renewable natural gas investments. See Note 13 for further information.
(e)    Other includes $16 million recorded as Preferred Redemption Costs on the Consolidated Statements of Operations related to the redemption of Series B Preferred Stock. See Note 20 for further information. Additionally, Other includes $23 million recorded within Operation, maintenance and other on the Consolidated Statements of Operations related to an insurance deductible for Hurricane Helene property losses.
(f)    GU&I includes Assets held for sale balances related to the Piedmont Tennessee Disposal Group. Refer to Note 2 for further information.
Year Ended December 31, 2023
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues
$26,846 $2,177 $29,023 $37 $— $29,060 
Intersegment revenues
75 89 164 97 (261)— 
Total operating revenues
$26,921 $2,266 $29,187 $134 $(261)$29,060 
Less:
Fuel used in electric generation and purchased power
$9,164 $— $9,164 $— $(78)$9,086 
Cost of natural gas
— 593 593 — — 593 
Operation, maintenance and other
5,309 455 5,764 36 (175)5,625 
Depreciation and amortization4,684 349 5,033 248 (28)5,253 
Property and other taxes
1,320 129 1,449 (49)— 1,400 
Impairment of assets and other charges
75 (4)71 14 — 85 
Interest expense1,850 217 2,067 1,097 (150)3,014 
Income tax expense (benefit)742 116 858 (420)— 438 
Other Segment Items
Noncontrolling interests(a)
99 (2)97 — — 97 
Preferred dividends— — — 106 — 106 
Add: Equity in earnings of unconsolidated affiliates7 40 47 66 — 113 
Add: Other(b)
538 66 604 216 (170)650 
Segment income (loss)(c)(d)
$4,223 $519 $4,742 $(616)$— $4,126 
Discontinued operations
(1,391)
Net income available to Duke Energy Corporation Common Stockholders
$2,735 
Add back: Net income attributable to noncontrolling interest
33 
Add back: Preferred dividends
106 
Net Income
$2,874 
Capital investments expenditures and acquisitions(e)
$10,135 $1,492 $11,627 $995 $— $12,622 
Segment assets(f)
155,449 17,349 172,798 4,095 — 176,893 
(a)    Net income (loss) attributable to NCI related to continuing operations.
(b)    Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net.
(c)    EU&I includes $35 million recorded within Impairment of assets and other charges and $8 million within Operation, maintenance and other primarily related to the North Carolina rate case order on Duke Energy Carolinas' Consolidated Statements of Operations; it also includes $33 million recorded within Impairment of assets and other charges and $8 million within Operation, maintenance and other primarily related to the North Carolina rate case order on Duke Energy Progress' Consolidated Statements of Operations. See Note 4 for additional information.
(d)    Other includes $110 million recorded within Operation, maintenance and other and $14 million within Impairment of assets and other charges primarily related to strategic repositioning as the Company transitions to a fully regulated utility on the Consolidated Statements of Operations. See Note 21 for additional information.
(e)    Other includes capital investments expenditures and acquisitions related to the Commercial Renewables Disposal Groups.
(f)    GU&I includes Assets held for sale balances related to the Piedmont Tennessee Disposal Group and Other includes Assets held for sale balances related to the Commercial Renewables Disposal Groups. See Note 2 for further information.
Major Customers
No Subsidiary Registrant has an individual customer representing more than 10% of its revenues for the year ended December 31, 2025.
Products and Services
The following table summarizes revenues of the reportable segments by type.
RetailWholesaleRetailTotal
(in millions)ElectricElectricNatural GasOther Revenues
2025
Electric Utilities and Infrastructure$25,504 $2,423 $— $1,430 $29,357 
Gas Utilities and Infrastructure— — 2,782 221 3,003 
Total Reportable Segments$25,504 $2,423 $2,782 $1,651 $32,360 
2024
Electric Utilities and Infrastructure$24,593 $2,219 $— $1,281 $28,093 
Gas Utilities and Infrastructure— — 2,320 70 2,390 
Total Reportable Segments$24,593 $2,219 $2,320 $1,351 $30,483 
2023
Electric Utilities and Infrastructure$23,484 $2,193 $— $1,244 $26,921 
Gas Utilities and Infrastructure— — 2,199 67 2,266 
Total Reportable Segments$23,484 $2,193 $2,199 $1,311 $29,187 
Duke Energy Carolinas
Duke Energy Carolinas has one reportable segment, EU&I.
EU&I generates, distributes and sells electricity in North Carolina and South Carolina. EU&I conducts operations primarily through Duke Energy Carolinas. The remainder of Duke Energy Carolinas' operations is presented as Other.
Year Ended December 31, 2025
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$9,713 $— $9,713 
Less:
Fuel used in electric generation and purchased power
$2,649 $— $2,649 
Operation, maintenance and other
1,959 43 2,002 
Depreciation and amortization1,903 — 1,903 
Property and other taxes
349 — 349 
Impairment of assets and other charges
(11)— (11)
Interest expense783 — 783 
Income tax expense (benefit)205 (11)194 
Add: Other segment items(a)
267 (3)264 
Segment income (loss) / Net income
$2,143 $(35)$2,108 
Capital expenditures$4,477 $— $4,477 
Segment assets
58,775 400 59,175 
Year Ended December 31, 2024
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$9,718 $— $9,718 
Less:
Fuel used in electric generation and purchased power
$3,251 $— $3,251 
Operation, maintenance and other
1,710 30 1,740 
Depreciation and amortization1,768 — 1,768 
Property and other taxes
346 — 346 
Impairment of assets and other charges
31 — 31 
Interest expense722 — 722 
Income tax expense (benefit)233 (7)226 
Add: Other segment items(a)
252 (3)249 
Segment income (loss) / Net income
$1,909 $(26)$1,883 
Capital expenditures
$3,966 $— $3,966 
Segment assets
54,782 223 55,005 
Year Ended December 31, 2023
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$8,288 $— $8,288 
Less:
Fuel used in electric generation and purchased power
$2,524 $— $2,524 
Operation, maintenance and other
1,689 85 1,774 
Depreciation and amortization1,593 — 1,593 
Property and other taxes
320 — 320 
Impairment of assets and other charges
44 — 44 
Interest expense686 — 686 
Income tax expense (benefit)162 (21)141 
Add: Other segment items(a)
267 (3)264 
Segment income (loss) / Net income
$1,537 $(67)$1,470 
Capital expenditures
$3,733 $— $3,733 
Segment assets
51,908 202 52,110 
(a)    Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Progress Energy
Progress Energy has one reportable segment, EU&I.
EU&I generates, distributes and sells electricity in North Carolina, South Carolina and Florida. EU&I conducts operations primarily through its wholly owned subsidiaries, Duke Energy Progress and Duke Energy Florida. The remainder of Progress Energy's operations is presented as Other.
Year Ended December 31, 2025
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$14,491 $18 $14,509 
Less:
Fuel used in electric generation and purchased power
$4,267 $— $4,267 
Operation, maintenance and other
3,280 55 3,335 
Depreciation and amortization2,543 — 2,543 
Property and other taxes
658 (1)657 
Impairment of assets and other charges
2 — 2 
Interest expense1,005 114 1,119 
Income tax expense (benefit)523 (38)485 
Add: Other segment items(a)
291 23 314 
Segment income (loss) / Net income
$2,504 $(89)$2,415 
Capital expenditures$6,125 $— $6,125 
Segment assets
71,685 4,153 75,838 
Year Ended December 31, 2024
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$13,612 $21 $13,633 
Less:
Fuel used in electric generation and purchased power
$4,755 $— $4,755 
Operation, maintenance and other
2,413 50 2,463 
Depreciation and amortization2,393 — 2,393 
Property and other taxes
617 — 617 
Impairment of assets and other charges
6 — 6 
Interest expense949 115 1,064 
Income tax expense (benefit)465 (39)426 
Add: Other segment items(a)
224 38 262 
Segment income (loss) / Net income
$2,238 $(67)$2,171 
Capital expenditures
$5,252 $— $5,252 
Segment assets
67,951 3,685 71,636 
Year Ended December 31, 2023
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$13,524 $20 $13,544 
Less:
Fuel used in electric generation and purchased power
$5,026 $— $5,026 
Operation, maintenance and other
2,554 82 2,636 
Depreciation and amortization2,151 — 2,151 
Property and other taxes
644 — 644 
Impairment of assets and other charges
28 — 28 
Interest expense840 114 954 
Income tax expense (benefit)426 (49)377 
Add: Other segment items(a)
210 18 228 
Segment income (loss) / Net income
$2,065 $(109)$1,956 
Capital expenditures
$4,917 $— $4,917 
Segment assets
63,182 3,912 67,094 
(a)    Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Progress
Duke Energy Progress has one reportable segment, EU&I.
EU&I generates, distributes and sells electricity in North Carolina and South Carolina. EU&I conducts operations primarily through Duke Energy Progress. The remainder of Duke Energy Progress' operations is presented as Other.
Year Ended December 31, 2025
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$7,386 $— $7,386 
Less:
Fuel used in electric generation and purchased power
$2,518 $— $2,518 
Operation, maintenance and other
1,431 24 1,455 
Depreciation and amortization1,406 — 1,406 
Property and other taxes
172 — 172 
Impairment of assets and other charges
2 — 2 
Interest expense526 — 526 
Income tax expense (benefit)229 (6)223 
Add: Other segment items(a)
200 (2)198 
Segment income (loss) / Net income
$1,302 $(20)$1,282 
Capital expenditures$3,428 $— $3,428 
Segment assets
42,163 364 42,527 
Year Ended December 31, 2024
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$7,017 $— $7,017 
Less:
Fuel used in electric generation and purchased power
$2,409 $— $2,409 
Operation, maintenance and other
1,370 18 1,388 
Depreciation and amortization1,336 — 1,336 
Property and other taxes
177 — 177 
Impairment of assets and other charges
6 — 6 
Interest expense492 1 493 
Income tax expense (benefit)194 (5)189 
Add: Other segment items(a)
138 7 145 
Segment income (loss) / Net income
$1,171 $(7)$1,164 
Capital expenditures
$2,803 $— $2,803 
Segment assets
39,402 91 39,493 
Year Ended December 31, 2023
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$6,488 $— $6,488 
Less:
Fuel used in electric generation and purchased power
$2,203 $— $2,203 
Operation, maintenance and other
1,342 37 1,379 
Depreciation and amortization1,266 — 1,266 
Property and other taxes
164 — 164 
Impairment of assets and other charges
29 — 29 
Interest expense427 — 427 
Income tax expense (benefit)158 (9)149 
Add: Other segment items(a)
128 (1)127 
Segment income (loss) / Net income
$1,027 $(29)$998 
Capital expenditures
$2,387 $— $2,387 
Segment assets
36,820 104 36,924 
(a)    Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Florida
Duke Energy Florida has one reportable segment, EU&I.
EU&I generates, distributes and sells electricity in Florida. EU&I conducts operations primarily through Duke Energy Florida. The remainder of Duke Energy Florida's operations is presented as Other.
Year Ended December 31, 2025
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$7,105 $— $7,105 
Less:
Fuel used in electric generation and purchased power
$1,749 $— $1,749 
Operation, maintenance and other
1,849 16 1,865 
Depreciation and amortization1,137 — 1,137 
Property and other taxes
486 — 486 
Interest expense479 — 479 
Income tax expense (benefit)294 (5)289 
Add: Other segment items(a)
91 2 93 
Segment income (loss) / Net income
$1,202 $(9)$1,193 
Capital expenditures$2,698 $— $2,698 
Segment assets
29,522 134 29,656 
Year Ended December 31, 2024
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$6,595 $— $6,595 
Less:
Fuel used in electric generation and purchased power
$2,346 $— $2,346 
Operation, maintenance and other
1,043 12 1,055 
Depreciation and amortization1,057 — 1,057 
Property and other taxes
440 — 440 
Interest expense457 — 457 
Income tax expense (benefit)271 (3)268 
Add: Other segment items(a)
86 3 89 
Segment income (loss) / Net income
$1,067 $(6)$1,061 
Capital expenditures
$2,449 $— $2,449 
Segment assets
28,549 20 28,569 
Year Ended December 31, 2023
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$7,036 $— $7,036 
Less:
Fuel used in electric generation and purchased power
$2,823 $— $2,823 
Operation, maintenance and other
1,212 27 1,239 
Depreciation and amortization885 — 885 
Property and other taxes
480 — 480 
Impairment of assets and other charges
(1)— (1)
Interest expense413 — 413 
Income tax expense (benefit)268 (7)261 
Add: Other segment items(a)
82 (2)80 
Segment income (loss) / Net income
$1,038 $(22)$1,016 
Capital expenditures
$2,529 $— $2,529 
Segment assets
26,362 239 26,601 
(a)    Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Ohio
Duke Energy Ohio has two reportable segments, EU&I and GU&I.
EU&I transmits and distributes electricity in portions of Ohio and generates, distributes and sells electricity in portions of Northern Kentucky. GU&I transports and sells natural gas in portions of Ohio and Northern Kentucky. Both reportable segments conduct operations primarily through Duke Energy Ohio and its wholly owned subsidiary, Duke Energy Kentucky. The remainder of Duke Energy Ohio's operations is presented as Other.
Year Ended December 31, 2025
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$2,045 $752 $2,797 — $2,797 
Less:
Fuel used in electric generation and purchased power
$626 $— $626 $— $626 
Cost of natural gas
— 199 199 — 199 
Operation, maintenance and other
366 116 482 8 490 
Depreciation and amortization318 147 465 1 466 
Property and other taxes
335 97 432 — 432 
Interest expense131 71 202 1 203 
Income tax expense (benefit)43 27 70 (2)68 
Add: Other segment items(a)
17 8 25 — 25 
Segment income (loss) / Net income
$243 $103 $346 $(8)$338 
Capital expenditures$600 $329 $929 $— $929 
Segment assets8,575 4,736 13,311 135 13,446 
Year Ended December 31, 2024
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$1,905 $640 $2,545 $— $2,545 
Less:
Fuel used in electric generation and purchased power
$538 $— $538 $— $538 
Cost of natural gas
— 142 142 — 142 
Operation, maintenance and other
366 109 475 10 485 
Depreciation and amortization273 131 404 (1)403 
Property and other taxes
306 94 400 — 400 
Interest expense126 68 194 (2)192 
Income tax expense (benefit)47 18 65 (1)64 
Add: Other segment items(a)
15 5 20 — 20 
Segment income (loss) / Net income
$264 $83 $347 $(6)$341 
Capital expenditures$535 $280 $815 $— $815 
Segment assets8,211 4,506 12,717 51 12,768 
Year Ended December 31, 2023
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$1,868 $639 $2,507 $— $2,507 
Less:
Fuel used in electric generation and purchased power
$608 $— $608 $— $608 
Cost of natural gas
— 163 163 — 163 
Operation, maintenance and other
351 118 469 9 478 
Depreciation and amortization257 110 367 — 367 
Property and other taxes
294 70 364 — 364 
Impairment of assets and other charges
2 — 2 1 3 
Interest expense116 53 169 — 169 
Income tax expense (benefit)42 23 65 (2)63 
Add: Other segment items(a)
29 14 43 (1)42 
Segment income (loss) / Net income
$227 $116 $343 $(9)$334 
Capital expenditures$520 $419 $939 $— $939 
Segment assets7,978 4,346 12,324 (108)12,216 
(a)    Other segment items for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Indiana
Duke Energy Indiana has one reportable segment, EU&I.
EU&I generates, distributes and sells electricity in Indiana. EU&I conducts operations primarily through Duke Energy Indiana. The remainder of Duke Energy Indiana's operations is presented as Other.
Year Ended December 31, 2025
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$3,544 $— $3,544 
Less:
Fuel used in electric generation and purchased power
$1,065 $— $1,065 
Operation, maintenance and other
801 10 811 
Depreciation and amortization823 — 823 
Property and other taxes
61 — 61 
Interest expense243 — 243 
Income tax expense (benefit)85 (3)82 
Add: Other segment items(a)
62 (1)61 
Segment income (loss) / Net income
$528 $(8)$520 
Capital expenditures$1,332 $— $1,332 
Segment assets
16,321 25 16,346 
Year Ended December 31, 2024
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$3,040 $— $3,040 
Less:
Fuel used in electric generation and purchased power
$964 $— $964 
Operation, maintenance and other
666 5 671 
Depreciation and amortization676 — 676 
Property and other taxes
50 — 50 
Interest expense228 1 229 
Income tax expense (benefit)72 (1)71 
Add: Other segment items(a)
62 — 62 
Segment income (loss) / Net income
$446 $(5)$441 
Capital expenditures
$935 $— $935 
Segment assets
15,726 1 15,727 
Year Ended December 31, 2023
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$3,399 $— $3,399 
Less:
Fuel used in electric generation and purchased power
$1,217 $— $1,217 
Operation, maintenance and other
695 18 713 
Depreciation and amortization666 — 666 
Property and other taxes
59 — 59 
Impairment of assets and other charges
(1)1 — 
Interest expense213 — 213 
Income tax expense (benefit)115 (5)110 
Add: Other segment items(a)
77 (1)76 
Segment income (loss) / Net income
$512 $(15)$497 
Capital expenditures
$961 $— $961 
Segment assets
14,966 (155)14,811 
(a)    Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Piedmont
Piedmont has one reportable segment, GU&I.
GU&I distributes and sells natural gas in North Carolina, South Carolina and Tennessee. GU&I conducts operations primarily through Piedmont. The remainder of Piedmont's operations is presented as Other.
Year Ended December 31, 2025
Gas
Utilities and
Eliminations/
(in millions)Infrastructure
Other
Total
Total operating revenues
$2,237 $— $2,237 
Less:
Cost of natural gas
$784 $— $784 
Operation, maintenance and other
393 15 408 
Depreciation and amortization282 — 282 
Property and other taxes
67 — 67 
Interest expense193 — 193 
Income tax expense (benefit)115 (3)112 
Other Segment Items
Add: Equity in earnings of unconsolidated affiliates— 8 8 
Add: Other(a)
46 (5)41 
Segment income (loss) / Net income
$449 $(9)$440 
Capital expenditures$807 $— $807 
Segment assets(b)
12,384 86 12,470 
Year Ended December 31, 2024
Gas
Utilities and
Eliminations/
(in millions)Infrastructure
Other
Total
Total operating revenues
$1,729 $— $1,729 
Less:
Cost of natural gas
$423 $— $423 
Operation, maintenance and other
355 4 359 
Depreciation and amortization261 — 261 
Property and other taxes
55 — 55 
Interest expense185 — 185 
Income tax expense (benefit)94 1 95 
Other Segment Items
Add: Equity in earnings of unconsolidated affiliates— 8 8 
Add: Other(a)
54 — 54 
Segment income (loss) / Net income
$410 $3 $413 
Capital expenditures
$1,025 $— $1,025 
Segment assets(b)
11,707 92 11,799 
Year Ended December 31, 2023
Gas
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$1,628 $— $1,628 
Less:
Cost of natural gas
$430 $— $430 
Operation, maintenance and other
336 8 344 
Depreciation and amortization237 — 237 
Property and other taxes
59 — 59 
Impairment of assets and other charges
(4)— (4)
Interest expense165 — 165 
Income tax expense (benefit)84 — 84 
Other Segment Items
Add: Equity in earnings of unconsolidated affiliates— 9 9 
Add: Other(a)
59 (2)57 
Segment income (loss) / Net income
$380 $(1)$379 
Capital expenditures
$1,036 $— $1,036 
Segment assets(b)
10,978 89 11,067 
(a)    Other includes Gains on sales of other assets and other, net, and Other income and expenses, net.
(b)    GU&I includes Assets held for sale balances related to the Piedmont Tennessee Disposal Group. Refer to Note 2 for further     information.
v3.25.4
Regulatory Matters
 12 Months Ended
Dec. 31, 2025
Regulated Operations [Abstract]  
Regulatory Matters REGULATORY MATTERS
REGULATORY ASSETS AND LIABILITIES
The Duke Energy Registrants record regulatory assets and liabilities that result from the ratemaking process. See Note 1 for further information.
The following tables present the regulatory assets and liabilities recorded on the Consolidated Balance Sheets of Duke Energy and Progress Energy. See separate tables below for balances by individual registrant.
Duke EnergyProgress Energy
December 31,December 31,
(in millions)2025202420252024
Regulatory Assets
AROs – coal ash$3,670 $3,384 $1,544 $1,335 
Accrued pension and OPEB2,281 2,524 744 828 
Storm cost deferrals73 1,951 49 1,238 
Storm cost securitized balance, net2,567 1,023 1,239 822 
AROs – nuclear and other602 948 564 905 
Nuclear asset securitized balance, net717 771 717 771 
Debt fair value adjustment665 719 — — 
COR regulatory asset860 646 746 571 
Deferred fuel and purchased power619 588 228 282 
Hedge costs deferrals365 352 135 126 
PISCC and deferred operating expenses291 331 37 37 
Retired generation facilities252 337 176 202 
Customer connect project234 257 107 116 
Grid deferral257 255 63 54 
Incremental COVID-19 expenses202 231 94 89 
Vacation accrual240 228 45 43 
Deferred asset – Lee and Harris COLA177 215 4 10 
Advanced metering infrastructure (AMI)162 204 48 70 
Demand side management (DSM) / Energy efficiency (EE)335 199 247 199 
CEP deferral200 195 — — 
NCEMPA deferrals202 179 202 179 
Decoupling118 162 27 32 
Nuclear deferral117 134 53 53 
Deferred pipeline integrity costs117 129 — — 
COR settlement106 110 28 29 
Derivatives – natural gas supply contracts72 94 — — 
Deferred coal ash handling system costs60 77 13 17 
Qualifying facility contract buyouts55 62 55 62 
Network Integration Transmission Services deferral31 31 — — 
Transmission expansion obligation30 31 — — 
East Bend deferrals20 24 — — 
Propane caverns22 24 — — 
Deferred purchased gas costs26 9 — — 
Other568 535 238 195 
Total regulatory assets16,313 16,959 7,403 8,265 
Less: Current portion
1,934 2,739 753 1,647 
Total noncurrent regulatory assets$14,379 $14,220 $6,650 $6,618 
Regulatory Liabilities
COR regulatory liability$5,336 $5,302 $3,084 $2,984 
Net regulatory liability related to income taxes4,748 5,356 1,741 1,882 
AROs – nuclear and other2,982 2,289 — — 
Deferred nuclear PTC1,377 676 197 95 
Hedge cost deferrals582 583 248 281 
Renewable energy credits267 241 146 139 
Accrued pension and OPEB184 232 11 12 
Deferred fuel and purchased power28 223 28 94 
Storm cost recovery262 6 90 6 
DSM / EE26 69 — — 
Storm reserve132 — 132 — 
Nuclear insurance distributions reserve163 152 — — 
Other866 813 274 287 
Total regulatory liabilities 16,953 15,942 5,951 5,780 
Less: Current portion
1,271 1,421 350 522 
Total noncurrent regulatory liabilities $15,682 $14,521 $5,601 $5,258 
Descriptions of regulatory assets and liabilities summarized in the tables above and below follow. See tables below for recovery and amortization periods at the separate registrants.
AROs – coal ash. Represents deferred depreciation and accretion related to the legal obligation to close ash basins. The costs are deferred until recovery treatment has been determined. See Notes 1 and 10 for additional information.
AROs – nuclear and other. Represents regulatory assets or liabilities, including deferred depreciation and accretion, related to legal obligations associated with the future retirement of property, plant and equipment, excluding amounts related to coal ash. The AROs relate primarily to decommissioning nuclear power facilities. The amounts also include certain deferred gains and losses on NDTF investments. See Notes 1 and 10 for additional information.
Deferred fuel and purchased power. Represents certain energy-related costs that are recoverable or refundable as approved by the applicable regulatory body.
Accrued pension and OPEB. Accrued pension and OPEB represent regulatory assets and liabilities related to each of the Duke Energy Registrants’ respective shares of unrecognized actuarial gains and losses and unrecognized prior service cost and credit attributable to Duke Energy’s pension plans and OPEB plans. The regulatory asset or liability is amortized with the recognition of actuarial gains and losses and prior service cost and credit to net periodic benefit costs for pension and OPEB plans. The accrued pension and OPEB regulatory assets are expected to be recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Storm cost deferrals. Represents deferred incremental costs incurred related to major weather-related events.
Storm cost securitized balance, net. Represents the North Carolina portion of storm restoration expenditures related to hurricanes Helene, Debby, Ian, Florence, Michael, Dorian and Zeta and winter storms Diego and Izzy. The South Carolina portion of storm restoration expenditures are related to ice storms Pax and Ulysses, hurricanes Helene, Matthew, Florence, Michael and Dorian and Winter Storms Izzy and Jasper, as well as funding of the negative South Carolina storm reserve balance.
Nuclear asset securitized balance, net. Represents the balance associated with Crystal River Unit 3 retirement approved for recovery by the FPSC on September 15, 2015, and the upfront financing costs securitized in 2016 with issuance of the associated bonds. The regulatory asset balance is net of the AFUDC equity portion.
Debt fair value adjustment. Purchase accounting adjustments recorded at the Duke Energy (Parent) level to state the carrying value of debt at fair value in connection with the Duke Energy mergers with Progress Energy in 2012 and Piedmont in 2016. Amount is amortized over the life of the related debt.
Hedge costs deferrals. Amounts relate to realized and unrealized gains and losses on derivatives recorded as a regulatory asset or liability, respectively, until the contracts are settled.
COR regulatory asset. Represents the excess of spend over funds received from customers to cover the future removal of property, plant and equipment from retired or abandoned sites as property is retired, net of certain deferred gains on NDTF investments.
PISCC and deferred operating expenses. Represents deferred depreciation and operating expenses as well as carrying costs on the portion of capital expenditures placed in service but not yet reflected in retail rates as plant in service.
Retired generation facilities. Represents amounts to be recovered for facilities that have been retired and are probable of recovery.
Deferred asset – Lee and Harris COLA. Represents deferred costs incurred for the canceled Lee and Harris nuclear projects.
Customer connect project. Represents incremental operating expenses and carrying costs on deferred amounts related to the deployment of the new customer information system.
AMI. Represents deferred costs related to the installation of AMI meters and remaining net book value of non-AMI meters to be replaced at Duke Energy Carolinas, net book value of existing meters at Duke Energy Florida, Duke Energy Progress and Duke Energy Ohio and future recovery of net book value of electromechanical meters that have been replaced with AMI meters at Duke Energy Indiana.
Incremental COVID-19 expenses. Represents incremental costs related to customer charge-offs and certain costs to ensure continuity and quality of service in a safe manner during the COVID-19 pandemic.
Vacation accrual. Represents vacation entitlement, which is generally recovered in the following year.
Grid deferral. Represents deferred incremental operation and maintenance expense, depreciation and property taxes associated with grid improvement plans.
DSM/EE. Deferred costs related to various DSM and EE programs recoverable or refundable as approved by the applicable regulatory body.
CEP deferral. Represents deferred depreciation, PISCC and deferred property tax for Duke Energy Ohio Gas capital assets for the CEP.
NCEMPA deferrals. Represents retail allocated cost deferrals and returns associated with the additional ownership interest in assets acquired from NCEMPA in 2015.
Derivatives – natural gas supply contracts. Represents costs for certain long-dated, fixed quantity forward natural gas supply contracts, which are recoverable through PGA clauses.
Deferred pipeline integrity costs. Represents pipeline integrity management costs in compliance with federal regulations.
Nuclear deferral. Includes amounts related to nuclear plant outage and refueling costs, which are deferred and recovered over the nuclear fuel cycle.
COR settlement. Represents approved COR settlements that are being amortized over the average remaining lives, at the time of approval, of the associated assets.
Decoupling. Relates primarily to margin and revenue decoupling.
Deferred coal ash handling system costs. Represents deferred depreciation and returns associated with capital assets related to converting the ash handling system from wet to dry.
Qualifying facility contract buyouts. Represents termination payments for regulatory recovery through the capacity clause.
Network Integration Transmission Services deferral. Represents a deferral of costs and return related transmission costs.
Transmission expansion obligation. Represents transmission expansion obligations related to Duke Energy Ohio's withdrawal from MISO.
East Bend deferrals. Represents amounts to be recovered for deferred costs and depreciation related to the East Bend station.
Propane caverns. Represents amounts for costs related to propane inventory, the net book value of remaining assets and decommissioning costs at Duke Energy Ohio.
Net regulatory liability related to income taxes. Amounts for all registrants include regulatory liabilities related primarily to impacts from the Tax Cuts and Jobs Act (the Tax Act). See Note 24 for additional information. Amounts have no immediate impact on rate base as regulatory assets are offset by deferred tax liabilities.
COR regulatory liability. Represents funds received from customers to cover current and future coal ash remediation costs and future removal of property, plant and equipment from retired or abandoned sites as property is retired. Also includes certain deferred gains on NDTF investments.
Deferred nuclear PTC. Represents the net realizable value of nuclear PTCs that will be passed back to customers over time.
Renewable energy credits. Represents certificates for the environmental benefits of renewable energy that will be returned to customers in a future period.
Storm cost recovery. Actual storm costs were less than the amount securitized and the difference is deferred as a regulatory liability and accrues a return at the commission-authorized WACC from the bond issuance date until the amount is reflected in customer rates.
Storm reserve. Amounts reserved for future incremental storm restoration costs.
Nuclear insurance distributions reserve. Amounts reserved related to the Nuclear Mutual Limited (now known as Nuclear Electric Insurance Limited (NEIL)) portion of nuclear insurance distributions which are to be held for the benefit of customers.
Deferred purchased gas costs. Represents certain natural gas costs that are recoverable or refundable as approved by the applicable regulatory body.
RESTRICTIONS ON THE ABILITY OF CERTAIN SUBSIDIARIES TO MAKE DIVIDENDS, ADVANCES AND LOANS TO DUKE ENERGY
As a condition to the approval of merger transactions, the NCUC, PSCSC, PUCO, KPSC and IURC imposed conditions on the ability of Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio, Duke Energy Kentucky, Duke Energy Indiana and Piedmont to transfer funds to Duke Energy through loans or advances, as well as restricted amounts available to pay dividends to Duke Energy. Certain subsidiaries may transfer funds to the Parent by obtaining approval of the respective state regulatory commissions. These conditions imposed restrictions on the ability of the public utility subsidiaries to pay cash dividends as discussed below.
Duke Energy Progress and Duke Energy Florida also have restrictions imposed by their first mortgage bond indentures, which in certain circumstances, limit their ability to make cash dividends or distributions on common stock. Amounts restricted as a result of these provisions were not material at December 31, 2025.
Additionally, certain other subsidiaries of Duke Energy have restrictions on their ability to dividend, loan or advance funds to Duke Energy due to specific legal or regulatory restrictions, including, but not limited to, minimum working capital and tangible net worth requirements.
The restrictions discussed below were not a material amount of Duke Energy's and Progress Energy's net assets at December 31, 2025.
Duke Energy Carolinas
Duke Energy Carolinas must limit cumulative distributions subsequent to mergers to (i) the amount of retained earnings on the day prior to the closing of the mergers, plus (ii) any future earnings recorded.
Duke Energy Progress
Duke Energy Progress must limit cumulative distributions subsequent to the mergers between Duke Energy and Progress Energy and Duke Energy and Piedmont to (i) the amount of retained earnings on the day prior to the closing of the respective mergers, plus (ii) any future earnings recorded.
Duke Energy Ohio
Duke Energy Ohio will not declare and pay dividends out of capital or unearned surplus without the prior authorization of the PUCO. Duke Energy Ohio received FERC and PUCO approval to pay dividends from its equity accounts that are reflective of the amount that it would have in its retained earnings account had push-down accounting for the Cinergy merger not been applied to Duke Energy Ohio’s balance sheet. The conditions include a commitment from Duke Energy Ohio that equity, adjusted to remove the impacts of push-down accounting, will not fall below 30% of total capital.
Duke Energy Kentucky is required to pay dividends solely out of retained earnings and to maintain a minimum of 35% equity in its capital structure.
Duke Energy Indiana
Duke Energy Indiana must limit cumulative distributions subsequent to the merger between Duke Energy and Cinergy to (i) the amount of retained earnings on the day prior to the closing of the merger, plus (ii) any future earnings recorded. In addition, Duke Energy Indiana will not declare and pay dividends out of capital or unearned surplus without prior authorization of the IURC.
Piedmont
Piedmont must limit cumulative distributions subsequent to the acquisition of Piedmont by Duke Energy to (i) the amount of retained earnings on the day prior to the closing of the merger, plus (ii) any future earnings recorded.
RATE-RELATED INFORMATION
The NCUC, PSCSC, FPSC, IURC, PUCO, TPUC and KPSC approve rates for retail electric and natural gas services within their states. The FERC approves rates for electric sales to wholesale customers served under cost-based rates (excluding Ohio and Indiana), as well as sales of transmission service. For open regulatory matters, unless otherwise noted, the Subsidiary Registrants and Duke Energy Kentucky cannot predict the outcome or ultimate resolution of their respective matters.
Winter Storm Fern
In late January 2026, Winter Storm Fern moved across the eastern U.S and impacted all of Duke Energy's service territories, with damage primarily occurring in the Duke Energy Carolinas and Duke Energy Progress territories in North Carolina and South Carolina. Approximately 200,000 customers were impacted across Duke Energy's system. Total storm restoration costs, including capital expenditures, for Duke Energy are currently estimated to be in the range of $250 million to $350 million (which includes $150 million to $225 million for Duke Energy Carolinas and $100 million to $125 million for Duke Energy Progress). Incremental storm restoration costs related to operation and maintenance activities in excess of amounts in base rates will be deferred as regulatory assets and reviewed for recovery in future regulatory proceedings or charged to storm reserves, where applicable. These estimates could change as additional information is received on actual costs incurred for preparation and restoration activities.
Duke Energy Carolinas and Duke Energy Progress
Hurricanes Debby and Helene
In 2024, hurricanes Debby and Helene significantly impacted the Duke Energy Carolinas and Duke Energy Progress territories in North Carolina and South Carolina. As of December 31, 2025, total cumulative operations and maintenance expenses incurred for restoration and rebuilding of infrastructure were approximately $762 million ($474 million and $288 million for Duke Energy Carolinas and Duke Energy Progress, respectively), with an additional $507 million in cumulative capital investments ($408 million and $99 million for Duke Energy Carolinas and Duke Energy Progress, respectively), net of expected insurance recovery. The operations and maintenance expense amounts were deferred in Regulatory assets within Other Noncurrent Assets on the Consolidated Balance Sheets when incurred. Substantially all of the storm related costs have been securitized for recovery in both North Carolina and South Carolina as of December 31, 2025, as described below.
North Carolina Storm Cost Securitization
In December 2024, Duke Energy Carolinas and Duke Energy Progress filed their joint petition for review and approval of storm recovery costs (Phase 1) with the NCUC to securitize the North Carolina-retail allocable share of storm costs associated with hurricanes Helene, Debby and Ian, as well as Hurricane Zeta and Winter Storm Izzy, and the establishment of storm reserves for $200 million at Duke Energy Carolinas and $100 million at Duke Energy Progress. On February 3, 2025, Duke Energy Carolinas and Duke Energy Progress filed their joint petition for financing orders (Phase 2). Duke Energy Carolinas and Duke Energy Progress reached settlement agreements with the North Carolina Public Staff and other intervening parties that resolved all issues in the Phase 1 and Phase 2 proceedings and removed the establishment of storm reserves from the securitization proceeding. On April 16, 2025, the NCUC issued its Phase 1 order approving the settlement and determining storm recovery costs were reasonable, prudent and eligible for securitization. On June 18, 2025, the NCUC issued its Phase 2 order approving the settlement and issuing the financing orders.
In September 2025, Duke Energy Carolinas and Duke Energy Progress issued $582 million and $461 million, respectively, of storm recovery bonds. Storm recovery charges were effective November 1, 2025. Per the financing orders, any differences between estimates and actual costs of the storms must be accumulated and tracked to allow for a detailed review of the costs for reasonableness and prudency in Duke Energy Carolinas' and Duke Energy Progress’ next general rate case proceedings. As of December 31, 2025, actual North Carolina-retail allocable storm costs were lower than estimates and Duke Energy Carolinas and Duke Energy Progress recorded $136 million and $71 million, respectively, in Regulatory Liabilities within Other Noncurrent Liabilities on the Consolidated Balance Sheets. Accordingly, these amounts were included in Duke Energy Carolinas' and Duke Energy Progress' PBR applications filed in November 2025. See below and Notes 7 and 18 for more information.
South Carolina Storm Cost Securitization
On March 21, 2025, Duke Energy Carolinas filed a petition for storm securitization with the PSCSC for authorization to finance the estimated South Carolina-retail allocable share of storm costs primarily related to Hurricane Helene storm recovery activities and inclusive of funding $25 million related to storm reserves. Duke Energy Carolinas reached a comprehensive settlement among all parties in the proceeding, which was filed with the PSCSC supporting securitization, including the storm reserve funding. On July 10, 2025, the PSCSC approved the settlement and the financing order was issued on August 1, 2025. In November 2025, Duke Energy Carolinas issued $561 million of storm recovery bonds. See Notes 7 and 18 for more information. Storm recovery charges were effective January 1, 2026. Additionally, per the financing order, any differences between estimates and actual costs of the storms must be accumulated and tracked to allow for a detailed review of the costs for reasonableness and prudency in Duke Energy Carolinas' next general rate case proceeding. As of December 31, 2025, actual South Carolina-retail allocable storm costs were lower than estimates and Duke Energy Carolinas recorded $35 million in Regulatory Liabilities within Other Noncurrent Liabilities on the Consolidated Balance Sheets. Due to the relatively low level of storm costs incurred by Duke Energy Progress in South Carolina, Duke Energy Progress will not seek to pursue securitization of those costs and has offset them against established storm reserve balances.
Applications to Combine Utilities
On August 14, 2025, Duke Energy Carolinas and Duke Energy Progress (together, the Companies) filed a joint application with the NCUC and PSCSC for approval to combine utilities, by which Duke Energy Progress will merge into Duke Energy Carolinas, resulting in a single electric utility serving the Companies' North Carolina and South Carolina service territories. Duke Energy Corporation, together with the Companies, also filed an application with the FERC on the same day. The single utility’s ability to plan, execute, and operate resources more efficiently is expected to result in substantial cost savings, benefiting customers by reducing the overall costs to serve. Subject to regulatory approvals, the targeted effective date is January 1, 2027. On January 30, 2026, FERC issued an order authorizing the combination as consistent with the public interest. There is no assurance that Duke Energy, Duke Energy Carolinas and Duke Energy Progress will obtain required regulatory approvals from the NCUC and the PSCSC, and approvals from all three regulators are required for the transaction to proceed.
The North Carolina Public Staff and intervenors in the NCUC proceeding filed testimony advocating, in part, that the NCUC impose certain conditions for the combination to go forward, including conditions related to treatment of costs to achieve and future rate consolidation. In the South Carolina proceeding, the South Carolina Office of Regulatory Staff and intervenors filed testimony recommending that the PSCSC condition approval of the combination on additional requirements, including addressing the identification, allocation and recovery of cost impacts and costs to achieve, as well as the treatment of benefits.
On February 24, 2026, the Companies reached a comprehensive settlement with the North Carolina Public Staff and certain other intervenors (stipulating parties) in the case, which was filed with NCUC. Subject to approval by the NCUC, the agreement resolves all issues between the stipulating parties regarding the combination of Duke Energy Carolinas and Duke Energy Progress. Among other terms, the agreement requires the Companies to guarantee savings from the combination will be at least $286 million to North Carolina retail customers over a 14-year period, permits recovery and deferral of costs to achieve, removes 200 MW of battery storage from the recommended portfolio and near term action plan in the 2025 Carolinas Resource Plan and provides that North Carolinas retail customers should provide an annual $25 million of Share the Benefits Contributions to South Carolina retail customers for six years starting in 2030.
The evidentiary hearing before the NCUC commenced on February 25, 2026. The South Carolina evidentiary hearing is anticipated to begin on April 8, 2026. Both orders are anticipated to be issued in the second quarter of 2026.
Duke Energy Carolinas
Regulatory Assets and Liabilities
The following tables present the regulatory assets and liabilities recorded on Duke Energy Carolinas' Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
AROs – coal ash
$1,506 $1,481 
Yes
(b)
Storm cost deferrals
— 691 Yes(b)
Accrued pension and OPEB(c)
592 668 
Yes
(g)
Deferred fuel and purchased power
306 298 (e)
2028
Deferred asset – Lee COLA
173 205 (b)
Hedge costs deferrals
199 202 (b)
Storm cost securitized balance, net
1,328 201 2046
Grid deferral(c)
194 201 Yes(b)
Incremental COVID-19 expenses(c)
104 137 Yes(b)
AMI(c)
102 114 Yes(b)
Vacation accrual
91 86 
2026
Nuclear deferral
64 81 2027
COR settlement
78 81 Yes(b)
Deferred coal ash handling system costs(c)
47 60 Yes(b)
Customer connect project(c)
48 54 Yes(b)
Retired generation facilities(c)
56 110 Yes(b)
DSM/EE
86 — 
Yes
(h)
PISCC and deferred operating expenses
39 42 Yes(b)
Decoupling
45 24 Yes(b)
Other174 148 (b)
Total regulatory assets5,232 4,884 
Less: Current portion
730 685 
Total noncurrent regulatory assets$4,502 $4,199 
Regulatory Liabilities(a)
AROs – nuclear and other
$2,982 2,289 (b)
Net regulatory liability related to income taxes(d)
1,608 $1,951 Yes(b)
COR regulatory liability(c)
1,383 1,479 (f)
Deferred nuclear PTC1,180 581 Yes
(b)
Hedge cost deferrals
228 199 (b)
Deferred fuel and purchased power
— 108 (e)
Renewable energy credits121 102 Yes(b)
Storm cost recovery
172 — Yes(b)
DSM / EE(c)
— 53 Yes
(h)
Accrued pension and OPEB(c)
18 35 
Yes
(g)
Nuclear insurance distributions reserve(c)
163 152 
Yes
(b)
Other 323 261 (b)
Total regulatory liabilities8,178 7,210 
Less: Current portion
569 618 
Total noncurrent regulatory liabilities$7,609 $6,592 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)     Included in rate base.
(d)    Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate. Portions are included in rate base.
(e)    Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. The asset balance principally relates to North Carolina costs while the liability balance relates to South Carolina.
(f)    Recovered over the life of the associated assets.
(g)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
(h)    Includes incentives on DSM/EE investments and is recovered or refunded through an annual rider mechanism.
2023 North Carolina Rate Case
In January 2023, Duke Energy Carolinas filed a PBR application with the NCUC to request an increase in base rate retail revenues. The PBR application included an MYRP to recover projected capital investments during the three-year MYRP period. In addition to the MYRP, the PBR application included an Earnings Sharing Mechanism, Residential Decoupling Mechanism and Performance Incentive Mechanisms (PIMs) as required by HB951.
In August 2023, Duke Energy Carolinas filed with the NCUC a partial settlement with the North Carolina Public Staff in connection with its PBR application. The partial settlement included, among other things, agreement on a substantial portion of the North Carolina retail rate base for the historic base case of approximately $19.5 billion and all of the capital projects and related costs to be included in the three-year MYRP, including $4.6 billion (North Carolina retail allocation) projected to go in service over the MYRP period. Additionally, the partial settlement included agreement, with certain adjustments, on depreciation rates, the recovery of grid improvement plan costs and PIMs, Tracking Metrics and the Residential Decoupling Mechanism under the PBR application. On August 28, 2023, Duke Energy Carolinas filed with the NCUC a second partial settlement with the North Carolina Public Staff resolving additional issues, including the future treatment of nuclear PTCs related to the IRA, through a stand-alone rider that would provide the benefits to customers. This stand-alone rider was effective in rates beginning January 1, 2025.
On December 15, 2023, the NCUC issued an order approving Duke Energy Carolinas' PBR application, as modified by the partial settlements and the order, including an overall retail revenue increase of $436 million in Year 1, $174 million in Year 2 and $158 million in Year 3, for a combined total of $768 million. The order established an ROE of 10.1% based upon an equity ratio of 53% and approved, with certain adjustments, depreciation rates and the recovery of grid improvement plan costs and certain deferred COVID-related costs. Additionally, the Residential Decoupling Mechanism and PIMs were approved as requested under the PBR application and revised by the partial settlements. As a result of the partial settlements and the order, Duke Energy Carolinas recognized pretax charges of $29 million within Impairment of assets and other charges, and $8 million within Operations, maintenance and other, for the year ended December 31, 2023, on the Consolidated Statements of Operations. Duke Energy Carolinas implemented interim rates on September 1, 2023. New revised Year 1 rates and the residential decoupling were implemented on January 15, 2024.
In February 2024, a number of parties filed Notices of Appeal of the December 15, 2023 NCUC order. Notices of Appeal were filed by the Carolina Industrial Group for Fair Utility Rates (CIGFUR) III, a collection of electric membership cooperatives (collectively, the EMCs), and the North Carolina Attorney General’s Office (the AGO). CIGFUR III and the EMCs appealed the interclass subsidy reduction percentage and the Transmission Cost Allocation stipulation. In addition, CIGFUR III appealed the NCUC’s elimination of the equal percentage fuel cost allocation methodology. The AGO appealed several issues including the authorized ROE and certain rate design and accounting matters. On March 1, 2024, Carolina Utility Customers Association, Inc. appealed several issues, including the authorized ROE and certain rate design and accounting matters. In July 2024, the Supreme Court of North Carolina consolidated these appeals with the parallel appeals of the NCUC's order regarding the Duke Energy Progress PBR application. Briefing is complete and oral arguments occurred in February 2025. Duke Energy Carolinas anticipates a decision to be issued in the first half of 2026.
2025 North Carolina Rate Case
On November 20, 2025, Duke Energy Carolinas filed a PBR application with the NCUC to request an increase in base rate retail revenues. The PBR application includes an MYRP to recover projected capital investments during a two-year MYRP period. In addition to the MYRP, the PBR application includes an Earnings Sharing Mechanism, Residential Decoupling Mechanism and PIMs. If approved, the overall net retail revenue increase would be $727 million in Year 1 and $275 million in Year 2, for a combined total of $1 billion or 15.0%. The application also requests an ROE of 10.95% with an equity ratio of 53%. The rate increase is driven primarily by major transmission and distribution investments since the last rate case and projected in the MYRP, as well as investments in energy storage and solar assets. Duke Energy Carolinas has requested the total Year 1 rates to be effective no later than January 1, 2027. The evidentiary hearing is scheduled to commence on July 7, 2026.
2024 South Carolina Rate Case
In January 2024, Duke Energy Carolinas filed a rate case with the PSCSC to request an increase in base rate retail revenues. In May 2024, Duke Energy Carolinas and the South Carolina Office of Regulatory Staff, as well as other consumer, environmental, and industrial intervening parties, filed a settlement resolving all issues in the base rate proceeding. The major components of the settlement include a $240 million annual customer rate increase, prior to a reduction from the accelerated return to customers of federal unprotected Property, Plant and Equipment related EDIT of $84 million annually over the first two years. The settlement includes an ROE of 9.94% with an equity ratio of 51.21% and resolved recovery of the continued investments in the grid, the Company's new corporate headquarters and environmental compliance costs. The PSCSC held a hearing in May 2024, to consider evidence supporting the settlement. On July 3, 2024, the PSCSC issued its final order approving an increase in base rates and approving nearly all components of the settlement. The order revised recovery of certain environmental compliance costs, the only provision of the settlement agreement not fully approved by the PSCSC. As a result, Duke Energy Carolinas recognized pretax charges of $33 million within Impairment of assets and other charges, $2 million within Operation, maintenance and other, partially offset by an $11 million reduction in Interest expense, for the year ended December 31, 2024, on the Consolidated Statements of Operations. Based upon the order, after accelerating the EDIT giveback to customers, the net rate increase is $150 million annually for the first two years. Revised customer rates were effective August 1, 2024, and are based upon a South Carolina retail rate base of $7.4 billion. This matter is now fully resolved.
2025 South Carolina Rate Case
On July 1, 2025, Duke Energy Carolinas filed a base rate case with the PSCSC requesting an increase in electric base rates. The request for the rate increase was driven by significant capital investments, including generation plant additions, as well as transmission, distribution and grid improvements. On November 11, 2025, Duke Energy Carolinas filed a comprehensive settlement with the South Carolina Office of Regulatory Staff and other intervenors in the case resolving all revenue requirement issues in the base rate proceeding. The settlement included an annual net increase in electric rates of approximately $19 million including the flow back of PTC benefits to customers, an ROE of 9.99% and an equity ratio of 53%. On December 31, 2025, the PSCSC issued an order approving the settlement agreement without modification. Revised customer rates will become effective on March 1, 2026.
Oconee Subsequent License Renewal
On June 7, 2021, Duke Energy Carolinas filed a subsequent license renewal (SLR) application for Oconee with the NRC to renew the operating licenses. On March 31, 2025, the NRC issued the subsequent renewed licenses for Oconee, allowing an additional 20 years of operation to 2053 (units 1 and 2) and 2054 (unit 3).
Bad Creek License Extension
On July 14, 2025, Duke Energy Carolinas filed its final license application with the FERC for the Bad Creek Pumped Storage Hydroelectric Station. The application, if approved, would extend plant operations for an additional 50 years. The current license expires in July 2027 and the renewal would extend the operating license of the facility to 2077. A FERC ruling is expected in 2027.
Anderson County Combined Cycle CECPCN
On October 30, 2025, Duke Energy Carolinas filed with the PSCSC an application for a CECPCN to construct and operate a new 1,365-MW natural gas CC generating facility with hydrogen capability in Anderson County, South Carolina. The preliminary estimate of the total project cost is approximately $3.2 billion, inclusive of financing costs. Subject to negotiation of final contractual terms, the new CC will be co-owned with North Carolina Electric Membership Corporation (NCEMC) and Central Electric Power Cooperative (CEPC), with Duke Energy Carolinas owning approximately 1,170 MW, NCEMC owning 100 MW and CEPC owning the remaining 95 MW. If approved, construction is anticipated to begin in 2027 and the facility would be expected to be in service by the end of 2030. An evidentiary hearing with the PSCSC occurred on February 25, 2026, and a final order is expected to be issued no later than April 28, 2026.
Buck Combustion Turbines CPCN
On November 21, 2025, Duke Energy Carolinas filed with the NCUC an application to construct and operate two hydrogen-capable advanced-class simple-cycle CTs at the site of the existing Buck CC Station. The two new CTs, totaling approximately 850 MW, will provide incremental peaking generation to serve Duke Energy Carolinas' customers growing energy needs. Pending regulatory approvals, construction of the CTs is planned to start in 2027 with the units targeted to be placed in service by the end of 2029. As part of the application, Duke Energy Carolinas noted that the recovery of CWIP during the construction period for the proposed facility will not be included in rate base and will instead accrue AFUDC. The 2030 North Carolina retail revenue requirement for the proposed facility is estimated to be $154 million, representing an approximate average North Carolina retail rate increase of 2.3% across all classes.
Marshall Combustion Turbines CPCN
In March 2024, Duke Energy Carolinas filed with the NCUC an application to construct and operate two hydrogen-capable advanced-class simple-cycle CTs at the site of the existing Marshall Steam Station. The two new CTs, totaling approximately 850 MW, will enable the retirement of Marshall coal units 1 and 2 and provide incremental capacity to support system capacity needs and expanded flexibility to support integration of renewables. Pending regulatory approvals, the CTs are targeted to be placed in service by the end of 2028. In December 2024, the NCUC issued its order granting the CPCN authorizing construction and the NCDEQ issued final air permits for the two CTs.
Certain preliminary construction activities are ongoing and on December 1, 2025, Duke Energy Carolinas filed an application requesting the NCUC's ongoing review of the construction of the two CTs that are planned to operate at the Marshall Steam Station. The application requests that the NCUC find that Duke Energy Carolinas’ construction costs incurred for the CTs during the prior 12-month reporting period are prudent and reasonable. These activities include actions related to site preparation and the ordering of certain long-lead-time equipment. The application also requests that the NCUC modify the existing CPCN for the CTs to reflect a revision to the cost estimate for the units. A decision on the application is anticipated by the third quarter of 2026.
On January 30, 2026, Duke Energy Carolinas filed an application for an out-of-state certificate with the PSCSC requesting that it find that the North Carolina-sited facility comprised of two new advanced class CTs at the existing Marshall Steam station is in the public convenience and necessity for South Carolina retail customers. The PSCSC is expected to make a decision on the application by the end of July 2026.
Duke Energy Progress
Regulatory Assets and Liabilities
The following tables present the regulatory assets and liabilities recorded on Duke Energy Progress' Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
AROs – coal ash
$1,531 $1,322 
Yes
(b)
AROs – nuclear and other
554 900 (c)
Storm cost securitized balance, net
1,239 822 2046
Accrued pension and OPEB(d)
396 439 
Yes
(i)
Deferred fuel and purchased power
227 277 (e)
2028
Storm cost deferrals
20 276 Yes(b)
DSM/EE(d)
229 188 Yes
(g)
NCEMPA deferrals(d)
202 179 (f)2042
Retired generation facilities(d)
87 108 Yes(b)
Incremental COVID-19 expenses(d)
94 89 (b)
Hedge costs deferrals
87 85 (b)
AMI(d)
39 54 Yes(b)
Grid deferral(d)
63 54 Yes(b)
Nuclear deferral
53 53 2027
Customer connect project(d)
42 45 Yes(b)
Vacation accrual
45 43 2026
PISCC and deferred operating expenses
37 37 Yes2054
Decoupling
27 32 Yes(b)
COR settlement
28 29 Yes(b)
Deferred coal ash handling system costs(d)
13 17 Yes(b)
Deferred asset – Harris COLA
4 10 (b)
Other178 122 (b)
Total regulatory assets5,195 5,181 
Less: Current portion
652 626 
Total noncurrent regulatory assets$4,543 $4,555 
Regulatory Liabilities(a)
COR regulatory liability(d)
$3,084 2,984 
(h)
Net regulatory liability related to income taxes(j)
1,206 $1,318 Yes(b)
Hedge cost deferrals
126 151 (b)
Renewable energy credits146 139 Yes(b)
Storm cost recovery
90 6 Yes(b)
Deferred nuclear PTC197 95 Yes(b)
Accrued pension and OPEB(d)
11 12 
Yes
(i)
Deferred fuel and purchased power
10 10 (e)
2028
Other 211 203 (b)
Total regulatory liabilities5,081 4,918 
Less: Current portion
274 348 
Total noncurrent regulatory liabilities$4,807 $4,570 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Recovery period for costs related to nuclear facilities runs through the decommissioning period of each unit.
(d)    Included in rate base.
(e)    Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. The asset balance principally relates to North Carolina costs while the liability balance relates to South Carolina.
(f)    South Carolina retail allocated costs are earning a return.
(g)    Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism.
(h)    Recovered over the life of the associated assets.
(i)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
(j)    Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate. Portions are included in rate base.
2022 North Carolina Rate Case
In October 2022, Duke Energy Progress filed a PBR application with the NCUC to request an increase in base rate retail revenues. The rate request before the NCUC included an MYRP to recover projected capital investments during the three-year MYRP period. In addition to the MYRP, the PBR application included an Earnings Sharing Mechanism, Residential Decoupling Mechanism and PIMs as required by HB951.
In April 2023, Duke Energy Progress filed with the NCUC a partial settlement with the North Carolina Public Staff, which included agreement on many aspects of Duke Energy Progress' three-year MYRP proposal. In May 2023, CIGFUR II joined this partial settlement and the North Carolina Public Staff and CIGFUR II filed a separate settlement reaching agreement on PIMs, Tracking Metrics and the Residential Decoupling Mechanism under the PBR application.
On August 18, 2023, the NCUC issued an order approving Duke Energy Progress' PBR application, as modified by the partial settlements and the order, including an overall retail revenue increase of $233 million in Year 1, $126 million in Year 2 and $135 million in Year 3, for a combined total of $494 million. Key aspects of the order include the approval of North Carolina retail rate base for the historic base case of approximately $12.2 billion and capital projects and related costs to be included in the three-year MYRP, including $3.5 billion (North Carolina retail allocation) projected to go in service over the MYRP period. The order established an ROE of 9.8% based upon an equity ratio of 53% equity and approved, with certain adjustments, depreciation rates and the recovery of grid improvement plan costs and certain deferred COVID-related costs. Additionally, the Residential Decoupling Mechanism and PIMs were approved as requested under the PBR application and revised by the partial settlements. As a result of the order, Duke Energy Progress recognized pretax charges of $28 million within Impairment of assets and other charges, which primarily related to certain COVID-19 deferred costs, and $8 million within Operation, maintenance and other, for the year ended December 31, 2023, on the Consolidated Statements of Operations. Duke Energy Progress implemented interim rates on June 1, 2023, and implemented revised Year 1 rates and the residential decoupling on October 1, 2023.
In October 2023, CIGFUR II and Haywood Electric Membership Corporation each filed a Notice of Appeal of the August 18, 2023 NCUC order. Both parties appealed certain matters that do not impact the overall revenue requirement in the rate case. Specifically, they appealed the interclass subsidy reduction percentage, and CIGFUR II also appealed the Customer Assistance Program and the equal percentage fuel cost allocation methodology. In November 2023, the AGO filed a Notice of Cross Appeal of the NCUC’s determination regarding the exclusion of electric vehicle revenue from the residential decoupling mechanism. In November 2023, Duke Energy Progress, the North Carolina Public Staff, CIGFUR II, and a number of other parties reached a settlement pursuant to which CIGFUR II agreed not to pursue its appeal of the Customer Assistance Program. In July 2024, the Supreme Court of North Carolina consolidated these appeals with the parallel appeals of the NCUC's order regarding the Duke Energy Carolinas PBR application. Briefing is complete and oral arguments occurred in February 2025. Duke Energy Progress anticipates a decision to be issued in the first half of 2026.
2025 North Carolina Rate Case
On November 20, 2025, Duke Energy Progress filed a PBR application with the NCUC to request an increase in base rate retail revenues. The PBR Application includes an MYRP to recover projected capital investments during a two-year MYRP period. In addition to the MYRP, the PBR Application includes an Earnings Sharing Mechanism, Residential Decoupling Mechanism and PIMs. If approved, the overall net retail revenue increase would be $529 million in Year 1 and $200 million in Year 2, for a combined total of $729 million or 15.1%, which includes the flow back of PTC benefits to customers through a proposed PTC rider similar to Duke Energy Carolinas. The application also requests an ROE of 10.95% with an equity ratio of 53%. The rate increase is driven primarily by major transmission and distribution investments since the last rate case and projected in the MYRP, as well as investments in energy storage and solar assets. Duke Energy Progress has requested the total Year 1 rates to be effective no later than January 1, 2027. The evidentiary hearing is scheduled to commence on August 11, 2026.
2025 South Carolina Rate Case
On June 12, 2025, Duke Energy Progress filed a base rate case with the PSCSC requesting an increase in electric base rates. The request for the rate increase was driven by significant capital investments, primarily including transmission, distribution and grid improvements. On October 27, 2025, Duke Energy Progress filed a comprehensive settlement with the South Carolina Office of Regulatory Staff and other intervenors in the case resolving all revenue requirement issues in the base rate proceeding. The settlement included an annual net increase in electric rates of approximately $40 million including the flow back of PTC benefits to customers, an ROE of 9.99% and an equity ratio of 53% and was subject to review and approval by the PSCSC. On December 12, 2025, the PSCSC issued an order approving the settlement agreement without modification. Revised customer rates were implemented on February 1, 2026.
Person County Combined Cycle CPCNs
On February 7, 2025, Duke Energy Progress filed with the NCUC its application to construct and operate a second 1,360-MW hydrogen-capable, advanced-class CC unit in Person County at the Roxboro Plant. NCEMC has also notified Duke Energy Progress of NCEMC's intent to co-own approximately 225 MW of the second CC and Duke Energy Progress and NCEMC began negotiations on the contractual arrangement in the second quarter of 2025. NCEMC has the right to co-own the facility under its existing supply agreement with Duke Energy Progress. Pending regulatory approvals, construction of the second CC is planned to start in 2026 with the unit targeted to be placed in service by the end of 2029. As part of the application, Duke Energy Progress noted that the recovery of CWIP during the construction period for the proposed facility may be pursued in the future. The 2030 North Carolina retail revenue requirement for the proposed second unit is estimated to be $113 million, representing an approximate average retail rate increase of 2.6% across all classes. The air permit was issued by the NCDEQ in December 2024. On October 16, 2025, the NCUC issued its order granting the CPCN. Certain preliminary construction activities are ongoing at both Person County CC units.
On January 30, 2026, Duke Energy Progress filed an application for out-of-state certificates with the PSCSC requesting that it find that the two new CC units, totaling approximately 2,720 MW, sited at the Person County facilities in North Carolina are in the public convenience and necessity for South Carolina retail customers. The PSCSC is expected to make a decision on the application by the end of July 2026.
Robinson Subsequent License Renewal
In April 2025, Duke Energy Progress filed an SLR application for Robinson with the NRC to renew Robinson’s operating license for an additional 20 years. The current license expires in 2030 and the renewal would extend the operating license of the facility to 2050. The NRC is performing
the safety and environmental reviews for the application and is working through 2025 government shutdown impacts in an effort to maintain the schedule for a decision by April 2026.
Duke Energy Florida
Regulatory Assets and Liabilities
The following tables present the regulatory assets and liabilities recorded on Duke Energy Florida's Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
Storm cost deferrals
$29 962 (e)(b)
Nuclear asset securitized balance, net
717 771 2036
COR regulatory asset
746 571 
Yes
(b)
Accrued pension and OPEB(c)
348 389 Yes(f)
Retired generation facilities(c)
89 94 Yes2044
Customer connect project(c)
65 71 Yes2037
Qualifying facility contract buyouts(c)
55 62 Yes2034
Hedge costs deferrals(c)
48 41 Yes
(b)
AMI(c)
9 16 Yes2032
AROs – coal ash
13 13 (b)
AROs – nuclear and other
10 5 (b)
Other79 91 (d)(b)
Total regulatory assets2,208 3,086 
Less: Current portion
102 1,022 
Total noncurrent regulatory assets$2,106 $2,064 
Regulatory Liabilities(a)
Net regulatory liability related to income taxes(c)
$535 $564 (b)
Hedge cost deferrals(c)
122 130 Yes(b)
Deferred fuel and purchased power
18 84 (e)2026
Storm reserve(c)
132 — 
Yes
(b)
Other 63 84 (d)(b)
Total regulatory liabilities870 862 
Less: Current portion
76 174 
Total noncurrent regulatory liabilities$794 $688 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Included in rate base.
(d)    Certain costs earn/pay a return.
(e)    Earns commercial paper rate.
(f)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Clean Energy Connection
In July 2020, Duke Energy Florida petitioned the FPSC for approval of a voluntary solar program consisting of 10 new solar generating facilities with combined capacity of 749 MW. The FPSC approved the program in January 2021, allowing participants to support cost-effective solar development in Florida by paying a subscription fee based on per kilowatt subscriptions and receiving a credit on their bill based on the actual generation associated with their portion of the solar portfolio. The 10 new solar generation facilities were completed and all of the remaining sites were in service by the end of 2024 at a cost of approximately $1.1 billion. These investments are included in base rates, offset by the revenue from the subscription fees, with credits included in the fuel cost recovery clause.
In February 2021, the League of United Latin American Citizens (LULAC) filed a notice of appeal of the FPSC’s order approving the Clean Energy Connection to the Supreme Court of Florida. On May 27, 2022, the Supreme Court of Florida issued an order remanding the case back to the FPSC so that the FPSC can amend its order to better address some of the arguments raised by LULAC. In September 2022, the FPSC issued a revised order and submitted it to the Supreme Court of Florida. On July 17, 2025, the Supreme Court of Florida issued an order affirming the revised FPSC order. The ruling did not change the solar program or have other financial implications. This matter is now fully resolved.
Storm Protection Plan
At least every three years, Duke Energy Florida must file an SPP with the FPSC. Each plan covers a 10-year period and includes investments in transmission and distribution meant to strengthen infrastructure, reduce outage times associated with extreme weather events, reduce restoration costs and improve overall service reliability. In January 2025, Duke Energy Florida filed an SPP for approval with the FPSC for the 2026-2035 time frame reflecting approximately $7 billion of capital investment in transmission and distribution. On May 16, 2025, Duke Energy Florida and the OPC filed joint stipulations to resolve all matters, and the FPSC issued an order on June 19, 2025, approving those stipulations. The stipulations require Duke Energy Florida to defer certain work in two programs from 2026 to 2027 and later. The remainder of Duke Energy Florida's filed SPP was approved without modification. This matter is now fully resolved.
2024 Florida Rate Case
In April 2024, Duke Energy Florida filed a formal request for new base rates with the FPSC. Duke Energy Florida proposed a three-year rate plan that would begin in January 2025, once its current base rate settlement agreement concludes at the end of 2024. Duke Energy Florida proposed multiyear rate increases that use the projected 12-month periods ending December 31, 2025, 2026, and 2027 as the test years, with adjusted rates to be effective with the first billing period of January 2025, 2026, and 2027, respectively.
In July 2024, Duke Energy Florida filed a settlement agreement with the FPSC. The parties to the settlement include Duke Energy Florida, the Office of Public Counsel and other intervening parties. Pursuant to the settlement, the parties agreed to a base rate stay-out provision that expires year-end 2027; however, Duke Energy Florida is allowed an increase to its base rates in 2025 and 2026, as well as utilization of certain tax benefits in lieu of a revenue increase in 2027. Additionally, revenue increases related to solar investments will be recovered via the Solar Base Rate Adjustment mechanism. The parties also agreed to an ROE band of 9.3% to 11.3% with a midpoint of 10.3% and an equity ratio of 53%. The agreement provides for $203 million and $59 million in base rate increases in 2025 and 2026, respectively, as well as increases associated with investments in 12 new solar facilities as they come on line. In August 2024, the FPSC approved the settlement agreement without modification and a final order was issued on November 12, 2024. New rates were effective January 1, 2025. This matter is now fully resolved.
Hurricanes Debby, Helene and Milton
In 2024, Hurricane Debby (Category 1 storm), Hurricane Helene (Category 4 storm) and Hurricane Milton (Category 3 storm) made landfall in Florida and caused significant damage. Duke Energy Florida has certain existing storm reserve regulatory liability amounts, which are applied to the recovery of storm costs. The storm reserve amount was approximately $63 million as of July 31, 2024, prior to the damage resulting from hurricanes Debby, Helene and Milton. Duke Energy Florida is permitted to petition the FPSC for recovery of incremental operation and maintenance costs resulting from the storms and to replenish the retail customer storm reserve to approximately $132 million.
In December 2024, Duke Energy Florida filed its petition to recover the estimated costs incurred to respond to all three storms, including replenishment of the storm reserve, seeking recovery of approximately $1.1 billion, over 12 months beginning with the first billing cycle in March 2025. On February 4, 2025, the FPSC voted to approve Duke Energy Florida's request for recovery of these estimated storm costs as filed, subject to true-up after the actual costs are filed. New rates were effective March 1, 2025.

Approximately $4 million and $936 million of the operation and maintenance expenses, net of storm reserves, are deferred in Regulatory assets within Current assets as of December 31, 2025, and December 31, 2024, respectively. Approximately $75 million of capital related to these storms will be sought for recovery in future base rate case filings. On January 5, 2026, Duke Energy Florida filed a notice with the FPSC to stop recovery of the storm cost charge because the costs were fully recovered and the storm reserve was fully replenished earlier than anticipated, primarily due to lower actual incurred storm costs as compared to preliminary estimates. The notice was administratively approved and revised rates with the storm charge removed were effective with the first billing cycle in February 2026.
Duke Energy Ohio
Regulatory Assets and Liabilities
The following tables present the regulatory assets and liabilities recorded on Duke Energy Ohio's Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
CEP deferral
$200 195 Yes(b)
Accrued pension and OPEB
121 131 (d)
COR regulatory asset
114 75 (b)
Customer connect project
39 44 (b)
Network Integration Transmission Services deferral
31 31 Yes(b)
Transmission expansion obligation
30 31 (b)
Decoupling
18 29 (b)
Deferred pipeline integrity costs
26 28 Yes(b)
East Bend deferrals(c)
20 24 Yes(b)
Propane caverns
22 24 (b)
PISCC and deferred operating expenses(c)
14 15 Yes2083
AROs – coal ash
14 14 Yes(b)
Deferred fuel and purchased power
25 8 2026
Other98 144 (b)
Total regulatory assets772 793 
Less: Current portion
86 88 
Total noncurrent regulatory assets$686 $705 
Regulatory Liabilities(a)
Net regulatory liability related to income taxes
$405 $432 (b)
Accrued pension and OPEB
13 14 (d)
Other 109 53 (b)
Total regulatory liabilities527 499 
Less: Current portion
57 34 
Total noncurrent regulatory liabilities$470 $465 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Included in rate base.
(d)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Duke Energy Ohio 2022 Natural Gas Base Rate Case
In June 2022, Duke Energy Ohio filed a natural gas base rate case application with the PUCO. The drivers for this case were capital invested since Duke Energy Ohio's last natural gas base rate case in 2012. Duke Energy Ohio also sought to adjust the caps on its CEP Rider. In April 2023, Duke Energy Ohio filed a stipulation with all parties to the case except the Ohio Consumers' Counsel (OCC). In the stipulation, the parties agreed to approximately $32 million in revenue increases with an equity ratio of 52.32% and an ROE of 9.6%, and adjustments to the CEP Rider caps. The stipulation was opposed by the OCC at an evidentiary hearing that concluded in May 2023. On November 1, 2023, PUCO issued an order approving the stipulation as filed and new rates went into effect November 1, 2023. In December 2023, the OCC filed an application for rehearing and the PUCO granted OCC's application for rehearing for further consideration of issues raised. As a result of a Supreme Court of Ohio decision regarding procedural issues related to applications for rehearing, PUCO denied OCC’s rehearing request. In October 2024, the OCC filed its Notice of Appeal with the Supreme Court of Ohio. The case is fully briefed and oral argument occurred October 7, 2025. The matter is now submitted for decision.
Duke Energy Ohio 2024 Electric Security Plan
In April 2024, Duke Energy Ohio filed with the PUCO a request for an Electric Security Plan (ESP). The ESP application proposed a three-year term from June 1, 2025, through May 31, 2028, and included continuation of market-based rates for generation supply through competitive procurement processes and continuation and expansion of existing rider mechanisms. Duke Energy Ohio proposed a new rider mechanism relating to electric distribution infrastructure modernization programs, which may be enabled by and partially funded through federal or state funding opportunities, as well as future battery storage projects, and two electric vehicle programs. Additional proposals included new rider mechanisms related to solar for all investments for low-income and disadvantaged communities, low-income senior citizen bill assistance, and EE and demand-side management programs.
In November 2024, Duke Energy Ohio filed a stipulation that the majority of the intervenors signed as either signatory or non-opposing parties. The stipulation includes the continuation of market-based rates for generation supply through competitive procurement auctions and the continuation of all existing riders. It further establishes new caps for certain riders. Duke Energy Ohio also agreed to withdraw its proposals for an infrastructure modernization rider, battery storage projects and electric vehicle programs. The stipulation included a residential EE program with provisions for low-income customers. On May 14, 2025, PUCO issued its order, approving the stipulation without modification.
On May 15, 2025, the governor of Ohio signed Ohio Substitute House Bill 15 (HB15) into law with an effective date of August 14, 2025. HB15 requires electric distribution utilities to file a base rate case every three years, commencing no later than December 31, 2029, and established an opportunity to apply for approval of a three-year rate plan with forward-looking test periods to mitigate regulatory lag. HB15 eliminates ESPs and certain distribution-related riders, but allows ESPs approved as of its effective date to remain in place through the end of their authorized term. HB15 also eliminated Duke Energy Ohio's Legacy Generation Rider upon the effective date of HB15 and prevents the PUCO from future reauthorization of similar arrangements. As a result of HB15, future losses related to Duke Energy Ohio's Inter-Company Power Agreement with OVEC will not be recoverable from retail customers.
Duke Energy Ohio RTO Adder
On February 24, 2022, the OCC filed a complaint asserting that FERC should reduce the ROE utilized in transmission formulas for Duke Energy Ohio and certain transmission providers by eliminating the 50 basis point adder associated with RTO membership. The OCC contends this is required because Ohio law mandates that transmission owning utilities join an RTO and that the 50 basis point adder is only applicable where RTO membership is voluntary. On December 15, 2022, FERC denied the complaint as it related to Duke Energy Ohio, but granted it for certain other transmission providers. As a result of appeal by certain other transmission providers, the U.S. Court of Appeals for the Sixth Circuit (Sixth Circuit) on January 17, 2025, reversed the prior decision from FERC. In the decision, the Sixth Circuit ruled the 50 basis point adder is available only where RTO membership is voluntary. The decision noted that Ohio law requires Ohio's transmission utilities to be a member of an RTO and therefore it is unlawful for FERC to remove the adder from certain transmission providers but not also remove the adder from Duke Energy Ohio. As a result, the issue was remanded back to FERC to revise their prior decision. As a result of the ruling, Duke Energy Ohio recognized a pretax charge during 2025, the results of which were not material. On March 26, 2025, the Sixth Circuit denied requests for rehearing. On April 16, 2025, the Sixth Circuit agreed to stay the mandate pending further appeal to the U.S. Supreme Court. On July 17, 2025, Duke Energy Ohio filed a respondent brief at the U.S. Supreme Court requesting review of the Sixth Circuit's decision. On November 10, 2025, the U.S. Supreme Court denied the appeal, and on November 13, 2025, the Sixth Circuit remanded the case back to FERC. An order from the FERC is expected in the first quarter of 2026.
Duke Energy Kentucky 2022 Electric Base Rate Case
In December 2022, Duke Energy Kentucky filed a base rate case with the KPSC driven by capital investments to strengthen the electricity generation and delivery systems along with adjusted depreciation rates for the East Bend and Woodsdale CT generation stations. Duke Energy Kentucky also requested approval for new programs and tariff updates, including a voluntary community-based renewable subscription program and two electric vehicle charging programs. The KPSC issued an order on October 12, 2023, including a $48 million increase in base revenues, an ROE of 9.75% for electric base rates and 9.65% for electric riders and an equity ratio of 52.145%. New rates went into effect October 13, 2023. Duke Energy Kentucky's request to adjust the depreciation rates of East Bend was denied and the KPSC ordered depreciation rates with a 2041 retirement date for the unit. The KPSC approved the request to align depreciation rates of Woodsdale CT with a 2040 retirement date and denied the voluntary community-based renewable subscription program and electric vehicle charging programs.
Revised rates were implemented in August 2024 after a rehearing request. On December 14, 2023, Duke Energy Kentucky filed an appeal with the Franklin County Circuit Court on certain matters for which the KPSC denied rehearing, specifically as it relates to the inclusion of decommissioning costs in depreciation rates for East Bend and Woodsdale. The case is fully briefed and Duke Energy Kentucky is awaiting the scheduling of oral arguments and the outcome of the appeal.
Duke Energy Kentucky 2024 Electric Base Rate Case
In December 2024, Duke Energy Kentucky filed a base rate case with the KPSC requesting an annualized increase in electric base rates of approximately $70 million. The request for the rate increase was driven by capital investments to strengthen the electricity generation and delivery systems. New rates went into effect on July 3, 2025, subject to refund. On October 2, 2025, the KPSC issued its decision approving a $44 million revenue requirement increase, with an ROE of 9.8% and an equity ratio of 52.73%. The KPSC further directed Duke Energy Kentucky to issue refunds of amounts collected since July 3, 2025, that exceed what has been approved by the order within 60 days. On October 22, 2025, Duke Energy Kentucky filed a petition for rehearing with the KPSC related to the treatment of terminal net salvage, rate case expense and recovery of costs from PJM. Additionally, on October 22, 2025, one commercial customer filed a petition for rehearing with the KPSC on a rate design issue, which does not impact the overall revenue requirement. On November 10, 2025, Duke Energy Kentucky’s motions for reconsideration regarding rate case expense and recovery of costs from PJM were granted and the motion for reconsideration regarding the treatment of terminal net salvage was denied by the KPSC. In December 2025, $7 million was refunded to customers.
Duke Energy Kentucky 2025 Natural Gas Base Rate Case
On June 2, 2025, Duke Energy Kentucky filed a base rate case with the KPSC requesting an increase in natural gas base rates. The request for the rate increase was driven by capital investments to strengthen the natural gas delivery system. On October 20, 2025, Duke Energy Kentucky filed a settlement with the Office of the Kentucky Attorney General, that if approved, would resolve all issues in the case. The settlement included an increase in natural gas base rates of approximately $22 million, an ROE of 9.8% for base rates (9.7% for riders), an equity ratio of 52.649%, and approval for cost recovery of Aldyl-A pipe and service replacements through an existing rider. On December 23, 2025, the KPSC approved the settlement without modification. New rates went into effect January 3, 2026. This matter is now fully resolved.
Duke Energy Indiana
Regulatory Assets and Liabilities
The following tables present the regulatory assets and liabilities recorded on Duke Energy Indiana's Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
AROs – coal ash
$606 $554 Yes(b)
PISCC and deferred operating expenses(c)
201 237 Yes(b)
Accrued pension and OPEB
203 212 (e)
Retired generation facilities(c)
20 25 Yes2030
Hedge costs deferrals
30 23 (b)
Customer connect project
18 19 (b)
Deferred fuel and purchased power
60 — 
2026
Storm cost deferrals
21 17 (b)
AMI
10 12 2031
Other56 54 (b)
Total regulatory assets1,225 1,153 
Less: Current portion
193 113 
Total noncurrent regulatory assets$1,032 $1,040 
Regulatory Liabilities(a)
Net regulatory liability related to income taxes
$641 $725 (b)
COR regulatory liability(c)
444 434 (d)
Accrued pension and OPEB
113 139 (e)
Hedge cost deferrals
106 103 (b)
Deferred fuel and purchased power
— 21 
DSM / EE
19 11 (b)
Other 137 154 (b)
Total regulatory liabilities1,460 1,587 
Less: Current portion
275 183 
Total noncurrent regulatory liabilities$1,185 $1,404 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Included in rate base.
(d)    Refunded over the life of the associated assets.
(e)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Indiana Coal Ash Recovery
In Duke Energy Indiana’s 2019 rate case, the IURC opened a subdocket for post-2018 coal ash related expenditures. In April 2020, Duke Energy Indiana filed testimony in the coal ash subdocket requesting recovery for post-2018 coal ash basin closure costs associated with closure plans that were approved by the Indiana Department of Environmental Management (IDEM) at that time as well as continued deferral approval and carrying costs on the balance of such coal ash basin closure costs. On November 3, 2021, the IURC issued an order allowing recovery of the post-2018 coal ash basin closure costs, as well as continuing deferral, with carrying costs on the balance. The OUCC and the Duke Industrial Group appealed. The Indiana Court of Appeals issued its opinion on February 21, 2023, reversing the IURC's order to the extent that it allowed Duke Energy Indiana to recover federally mandated costs incurred prior to the IURC's November 3, 2021 order. In addition, the court found that any costs incurred pre-petition to determine federally mandated compliance options were not specifically authorized by the statute and should also be disallowed.
In 2023, Duke Energy Indiana filed its proposal to remove from rates certain costs incurred prior to the IURC's November 3, 2021 order date. On September 20, 2023, the IURC approved Duke Energy Indiana's proposal to remove the costs from its rates and assessed simple interest on the refunds at a rate of 4.71%, beginning from when the costs were initially recovered from customers. In the 2024 Indiana Rate Case, Duke Energy Indiana included a request to recover the pre-order costs denied by the Indiana Court of Appeals and certain future coal ash closure costs as part of depreciation costs. The IURC's January 29, 2025 order in the 2024 Indiana Rate Case denied recovery of the pre-order costs previously denied by the Indiana Court of Appeals but approved the recovery of certain future coal ash closure costs as part of depreciation costs.
In 2023, Duke Energy Indiana filed a petition under the amended version of the federal mandate statute for additional post-2018 coal ash closure costs for the remaining basins not included in the Indiana coal ash recovery case from 2020. On May 8, 2024, the IURC issued a CPCN and approved these coal ash related compliance projects as federally mandated compliance projects. In June 2024, the Citizens Action Coalition of Indiana (CAC) filed a notice of appeal of the IURC's order. On August 26, 2025, the Indiana Court of Appeals reversed the decision by the IURC concluding that the IURC incorrectly allowed Duke Energy Indiana to collect those coal ash costs from customers. In October 2025, Duke Energy Indiana and the Indiana Office of Attorney General filed separate petitions requesting the Indiana Supreme Court to review the case. On January 26, 2026, the Indiana Supreme Court denied Duke Energy Indiana's and the Indiana Office of Attorney General's petitions. There were no material impacts on the results of operations, cash flows or financial position as a result of this ruling. Duke Energy Indiana is evaluating next steps as it relates to the Indiana Supreme Court's decision.
TDSIC 2.0
In November 2021, Duke Energy Indiana filed for approval of the Transmission, Distribution, Storage Improvement Charge 2.0 investment plan for 2023-2028 (TDSIC 2.0). On June 15, 2022, the IURC approved, without modification, TDSIC 2.0, which includes approximately $2 billion in transmission and distribution investments selected to improve customer reliability, harden and improve resiliency of the grid, enable expansion of renewable and distributed energy projects and encourage economic development. In July 2022, the OUCC filed a notice of appeal to the Indiana Court of Appeals in Duke Energy Indiana’s TDSIC 2.0 proceeding. The Indiana Court of Appeals issued its opinion on March 9, 2023, affirming the IURC’s order in its entirety. The Duke Industrial Group filed a petition to transfer to the Indiana Supreme Court. On December 19, 2024, the Indiana Supreme Court affirmed the Indiana Court of Appeals decision, concluding there was substantial evidence that the IURC's conclusion was reasonable and the TDSIC 2.0 plan met the statutory requirements. On January 21, 2025, the Duke Industrial Group filed a motion for rehearing. On March 4, 2025, the Indiana Supreme Court denied the Duke Industrial Group's petition for rehearing. There can be no further appeals on TDSIC 2.0 and this matter is now fully resolved.
2024 Indiana Rate Case
In April 2024, Duke Energy Indiana filed an application with the IURC for a rate increase for retail customers. The request for rate increase was driven by $1.6 billion in investments made since the last general rate case filed in 2019 in order to reliably serve customers, improve resiliency of the system, and advance energy solutions.
In connection with this rate case, a $29 million increase in a regulatory liability associated with certain employee post-retirement benefits was recorded in December 2024. An order for the rate case was issued by the IURC on January 29, 2025, and revised February 3, 2025, which authorized an ROE of 9.75%, an equity ratio of 53% and an annual revenue increase of $296 million. Based on review of these orders, Duke Energy Indiana identified an inconsistency in the calculation of operating revenues before the effect of trackers. On February 7, 2025, Duke Energy Indiana made a compliance filing in accordance with the IURC's findings in its order and addressed the identified inconsistencies. The compliance filing also clarified the annual revenue increase was approximately $385 million. On February 18, 2025, one industrial customer submitted a filing requesting the IURC to clarify its revenue allocation in these proceedings, which was denied by the Commission on April 16, 2025. On February 25, 2025, the IURC approved Duke Energy Indiana’s compliance filing and new rates were implemented February 27, 2025. The industrial customer filed a notice of appeal on February 28, 2025, regarding cost of service allocation. On April 9, 2025, the IURC issued an order clarifying the intent of its January 29, 2025 order regarding the rate migration adjustment, resulting in revised rates that were effective on May 19, 2025. On May 14, 2025, the industrial customer filed a motion to dismiss its appeal, and on May 20, 2025, the Indiana Court of Appeals granted the industrial customer's motion to dismiss. This matter is now fully resolved.
Cayuga Combined Cycle CPCN
On February 13, 2025, Duke Energy Indiana filed for a CPCN seeking approval to construct two 1x1 CC natural gas-fired units with a combined winter rating of 1,476 MW. The Cayuga CC Project is proposed to be constructed on the same site as the retiring Cayuga coal-fired steam units with a winter rating of 1,005 MW. The Cayuga CC Project will result in an incremental 471 MW for the Duke Energy Indiana system and will allow Duke Energy Indiana to avoid expected maintenance and environmental compliance costs needed for the coal units to continue operating. The estimated cost of the Cayuga CC project is approximately $3.3 billion, plus actual AFUDC. Duke Energy Indiana proposed recovery of certain facility costs during construction, including AFUDC, through CWIP ratemaking via a proposed Generation Cost Tracker (GCT). Duke Energy Indiana expects CC 1 to be placed in service in 2029 and CC 2 to be placed in service in 2030. A final air permit was issued by IDEM on March 5, 2025.
On June 17, 2025, Duke Energy Indiana entered into a settlement agreement with one of the parties in this proceeding to conduct a study evaluating the feasibility of third-party operation of the Cayuga coal units. On July 11, 2025, Duke Energy Indiana entered into a settlement agreement with an additional party in this proceeding agreeing to the need of the units and addressing accounting and ratemaking components. Neither agreement altered the underlying plans in the pending CPCN application. On October 29, 2025, the IURC issued its order approving the settlement agreements, granting the CPCN and approving cost recovery through the proposed GCT. On November 26, 2025, CAC filed a notice of appeal of the IURC's order.
On November 25, 2025, Duke Energy Indiana filed its first GCT tariff for approval to recover Cayuga CC CPCN-related costs, with the proposed factors to take effect in the first April 2026 billing cycle and to remain in place for approximately six months or until superseded by IURC-approved factors in a subsequent filing. The estimated average cumulative retail rate impact during construction and initial in-service periods from April 2026 through May 2031 is approximately 5.6%.
Piedmont
Regulatory Assets and Liabilities
The following tables present the regulatory assets and liabilities recorded on Piedmont's Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
Accrued pension and OPEB(c)
$131 $144 (g)
Deferred pipeline integrity costs(c)
91 101 2034
Derivatives – natural gas supply contracts(f)
72 94 2031
Decoupling
28 77 
Yes
(b)
Pipeline Integrity Management – Transmission/Distribution
27 14 (b)
Deferred purchased gas costs
26 9 
Yes
(b)
AROs – nuclear and other
25 25 (d)
Customer connect project(c)
22 24 2030
Vacation accrual(c)
15 14 2026
Other19 26 (e)(b)
Total regulatory assets456 528 
Less: Current portion
106 141 
Total noncurrent regulatory assets$350 $387 
Regulatory Liabilities(a)
COR regulatory liability(c)
$425 $405 
(e)
(d)
Net regulatory liability related to income taxes
353 366 (b)
Other 44 76 (e)(b)
Total regulatory liabilities822 847 
Less: Current portion
20 64 
Total noncurrent regulatory liabilities$802 $783 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Included in rate base.
(d)    Recovery over the life of the associated assets.
(e)    Certain costs earn/pay a return.
(f)    Balance will fluctuate with changes in the market.
(g)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
2024 North Carolina Rate Case
In April 2024, Piedmont filed an application with the NCUC for a rate increase for retail customers. In September 2024, Piedmont, the Public Staff and other intervening parties filed an Agreement and Stipulation of Settlement with the NCUC resolving all issues in the general rate case. The major components of the settlement include an overall average effective increase in net annual retail revenues of $88 million in the first year and $10 million of additional revenue after the first year. The settlement includes an ROE of 9.8% with an equity ratio of 52.3% and the addition of a rider mechanism for recovery of pipeline integrity management operations and maintenance expenses. The settlement was subject to the review and approval of the NCUC. The evidentiary hearing concluded in September 2024, and Piedmont implemented revised rates November 1, 2024. The NCUC issued its order approving the settlement as filed on January 7, 2025, and this matter is now fully resolved.
OTHER REGULATORY MATTERS
Potential Coal Plant Retirements
The Subsidiary Registrants periodically file IRPs with their state regulatory commissions. The IRPs provide a view of forecasted energy needs over a long term (10 to 20 years) and resources proposed to meet those needs. The IRPs also include planning assumptions around future retirement dates of aging coal-fired generating facilities.
Duke Energy Carolinas and Duke Energy Progress received an NCUC order on the 2022 Carbon Plan that concluded the projected retirement dates for their coal-fired generating facilities were reasonable for planning purposes and further directed that appropriate steps be taken to optimally retire the coal fleet according to such schedule. In August 2023, Duke Energy Carolinas and Duke Energy Progress filed their 2023 systemwide Carolinas Resource Plan with the NCUC and PSCSC, with a supplemental filing in January 2024 that demonstrated a need for additional resources beyond the set of resources identified by the companies in their initial plan. The NCUC and PSCSC issued orders in 2024 generally approving the resource plan. Duke Energy Carolinas and Duke Energy Progress conducted an updated coal retirement analysis for the 2025 Carolinas Resource Plan, consistent with direction by the NCUC in its order approving the 2023 Carolinas Resource Plan and in recognition by both the NCUC and PSCSC of the importance of continuing to assess the orderly retirement of these units. See the "Other Matters" section of Item 7 Management's Discussion and Analysis for further details on resource plans.
Duke Energy continues to evaluate the retirement date assumptions for all coal-fired generating facilities as changes in energy usage and/or growth and availability of replacement generation could result in different retirement dates of units than their current estimated useful lives. Except as previously discussed related to Duke Energy Kentucky's East Bend plant, rate cases recently filed or approved across all jurisdictions included proposed depreciation rates that approximate earlier retirement dates as outlined in recent IRPs. Duke Energy plans to seek regulatory recovery for amounts that would not be otherwise recovered when any of these assets are retired.
v3.25.4
Commitments and Contingencies
 12 Months Ended
Dec. 31, 2025
Commitments and Contingencies Disclosure [Abstract]  
Commitments and Contingencies COMMITMENTS AND CONTINGENCIES
INSURANCE
General Insurance
The Duke Energy Registrants have insurance and reinsurance coverage either directly or through indemnification from Duke Energy’s captive insurance company, Bison, and its affiliates, consistent with companies engaged in similar commercial operations with similar type properties. The Duke Energy Registrants’ coverage includes (i) commercial general liability coverage for liabilities arising to third parties for bodily injury and property damage; (ii) workers’ compensation; (iii) automobile liability coverage; and (iv) property coverage for all real and personal property damage. Real and personal property damage coverage excludes electric transmission and distribution lines, but includes damages arising from boiler and machinery breakdowns, earthquakes, flood damage and extra expense, but not outage or replacement power coverage. All coverage is subject to certain deductibles or retentions, sublimits, exclusions, terms and conditions common for companies with similar types of operations. The Duke Energy Registrants self-insure their electric transmission and distribution lines against loss due to storm damage and other natural disasters. As discussed further in Note 4, Duke Energy Florida maintains a storm damage reserve and has a regulatory mechanism to recover the cost of named storms on an expedited basis. Additionally, Duke Energy Carolinas and Duke Energy Progress maintain storm damage reserves and may leverage securitization to recover storm costs on an expedited basis, as appropriate.
The cost of the Duke Energy Registrants’ coverage can fluctuate from year to year reflecting claims history and conditions of the insurance and reinsurance markets. In the event of a loss, terms and amounts of insurance and reinsurance available might not be adequate to cover claims and other expenses incurred. Uninsured losses and other expenses, to the extent not recovered by other sources, could have a material effect on the Duke Energy Registrants’ results of operations, cash flows or financial position. Each company is responsible to the extent losses may be excluded or exceed limits of the coverage available.
Nuclear Insurance
Duke Energy Carolinas owns and operates McGuire and Oconee and operates and has a partial ownership interest in Catawba. McGuire and Catawba each have two reactors. Oconee has three reactors. The other joint owners of Catawba reimburse Duke Energy Carolinas for certain expenses associated with nuclear insurance per the Catawba joint owner agreements.
Duke Energy Progress owns and operates Robinson, Brunswick and Harris. Robinson and Harris each have one reactor. Brunswick has two reactors.
Duke Energy Florida owns Crystal River Unit 3, which permanently ceased operation in 2013 and achieved a SAFSTOR condition in July 2019. On October 1, 2020, Crystal River Unit 3 changed decommissioning strategies from SAFSTOR to DECON.
In the event of a loss, terms and amounts of insurance available might not be adequate to cover property damage and other expenses incurred. Uninsured losses and other expenses, to the extent not recovered by other sources, could have a material effect on Duke Energy Carolinas’, Duke Energy Progress’ and Duke Energy Florida’s results of operations, cash flows or financial position. Each company is responsible to the extent losses may be excluded or exceed limits of the coverage available.
Nuclear Liability Coverage
The Price-Anderson Act requires owners of nuclear reactors to provide for public nuclear liability protection per nuclear incident up to a maximum total financial protection liability. The maximum total financial protection liability, which is approximately $16.3 billion, is subject to change every five years for inflation and for the number of licensed reactors. Total nuclear liability coverage consists of a combination of private primary nuclear liability insurance coverage and a mandatory industry risk-sharing program to provide for excess nuclear liability coverage above the maximum reasonably available private primary coverage. The U.S. Congress could impose revenue-raising measures on the nuclear industry to pay claims.
Primary Liability Insurance
Duke Energy Carolinas and Duke Energy Progress have purchased the maximum reasonably available private primary nuclear liability insurance as required by law, which is $500 million per station. Duke Energy Florida has purchased $100 million primary nuclear liability insurance for Crystal River in compliance with the law.
Excess Liability Program
This program provides $15.8 billion of coverage per incident through the Price-Anderson Act’s mandatory industrywide excess secondary financial protection program of risk pooling. This amount is the product of potential cumulative retrospective premium assessments of $166 million times the current 95 licensed commercial nuclear reactors in the U.S. Under this program, operating unit licensees could be assessed retrospective premiums to compensate for public nuclear liability damages in the event of a nuclear incident at any licensed facility in the U.S. Retrospective premiums may be assessed at a rate not to exceed $24.7 million per year per licensed reactor for each incident. The assessment may be subject to state premium taxes.
Nuclear Property and Accidental Outage Coverage
Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are members of NEIL, an industry mutual insurance company, which provides property damage, nuclear accident decontamination and premature decommissioning insurance for each station for losses resulting from damage to its nuclear plants, either due to accidents or acts of terrorism. Additionally, NEIL provides accidental outage coverage for losses in the event of a major accidental outage at an insured nuclear station.
Pursuant to regulations of the NRC, each company’s property damage insurance policies provide that all proceeds from such insurance be applied, first, to place the plant in a safe and stable condition after a qualifying accident and second, to decontaminate the plant before any proceeds can be used for decommissioning, plant repair or restoration.
Losses resulting from acts of terrorism are covered as common occurrences, such that if terrorist acts occur against one or more commercial nuclear power plants insured by NEIL within a 12-month period, they would be treated as one event and the owners of the plants where the act occurred would share one full limit of liability. The full limit of liability is currently $3.2 billion. NEIL sublimits the total aggregate for all of their policies for non-nuclear terrorist events to approximately $1.8 billion.
Each nuclear facility has accident property damage, nuclear accident decontamination and premature decommissioning liability insurance from NEIL with limits of $1.5 billion, except for Crystal River Unit 3. Crystal River Unit 3’s limit is $50 million and is on an actual cash value basis. All nuclear facilities except for Catawba and Crystal River Unit 3 also share an additional $1.25 billion nuclear accident insurance limit above their dedicated underlying limit. This shared additional excess limit is not subject to reinstatement in the event of a loss. Catawba has a dedicated $1.25 billion of additional nuclear accident insurance limit above its dedicated underlying limit. Catawba and Oconee also have an additional $750 million of non-nuclear accident property damage limit. All coverages are subject to coverage terms, conditions, sublimits and significant deductibles.
NEIL’s Accidental Outage policy provides some coverage, similar to business interruption, for losses in the event of a major accident property damage outage of a nuclear unit. Coverage is provided on a weekly limit basis after a significant waiting period deductible and at 100% of the applicable weekly limits for 52 weeks and 80% of the remaining applicable weekly limits for nuclear accidents and 60% of the remaining appliable weekly limits for non-nuclear accident property damage. Coverage will not exceed the accidental outage policy limit of $490 million for each nuclear plant. NEIL sublimits the accidental outage recovery up to the first 104 weeks of coverage not to exceed $291 million from non-nuclear accidental property damage. Coverage amounts decrease in the event more than one unit at a station is out of service due to a common accident. All coverages are subject to coverage terms, conditions, sublimits and significant deductibles.
Potential Retroactive Premium Assessments
In the event of NEIL losses, NEIL’s board of directors may assess member companies' retroactive premiums of amounts up to 10 times their annual premiums for up to six years after a loss. NEIL has never exercised this assessment. The maximum aggregate current year policies' annual retrospective premium obligations for Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are $170 million, $102 million and $1 million, respectively. Duke Energy Carolinas' maximum assessment amount includes 100% of potential obligations to NEIL for jointly owned reactors. Duke Energy Carolinas would seek reimbursement from the joint owners for their portion of these assessment amounts.
ENVIRONMENTAL
The Duke Energy Registrants are subject to federal, state and local regulations regarding air and water quality, hazardous and solid waste disposal, coal ash and other environmental matters. These regulations can be changed from time to time, imposing new obligations on the Duke Energy Registrants. The following environmental matters impact all of the Duke Energy Registrants.
Remediation Activities
In addition to AROs recorded as a result of various environmental regulations, discussed in Note 10, the Duke Energy Registrants are responsible for environmental remediation at various sites. These include certain properties that are part of ongoing operations and sites formerly owned or used by Duke Energy entities. These sites are in various stages of investigation, remediation and monitoring. Managed in conjunction with relevant federal, state and local agencies, remediation activities vary based upon site conditions and location, remediation requirements, complexity and sharing of responsibility. If remediation activities involve joint and several liability provisions, strict liability, or cost recovery or contribution actions, the Duke Energy Registrants could potentially be held responsible for environmental impacts caused by other potentially responsible parties and may also benefit from insurance policies or contractual indemnities that cover some or all cleanup costs. Liabilities are recorded when losses become probable and are reasonably estimable. The total costs that may be incurred cannot be estimated because the extent of environmental impact, allocation among potentially responsible parties, remediation alternatives and/or regulatory decisions have not yet been determined at all sites. Additional costs associated with remediation activities are likely to be incurred in the future and could be significant. Costs are typically expensed as Operation, maintenance and other in the Consolidated Statements of Operations unless regulatory recovery of the costs is deemed probable.
The following table contains information regarding reserves for probable and estimable costs related to the various environmental sites. These reserves are recorded in Accounts Payable within Other Current Liabilities and Other within Other Noncurrent Liabilities on the Consolidated Balance Sheets.
(in millions)December 31, 2025December 31, 2024
Reserves for Environmental Remediation
Duke Energy$72 $68 
Duke Energy Carolinas36 24 
Progress Energy20 19 
Duke Energy Progress10 9 
Duke Energy Florida10 10 
Duke Energy Ohio12 21 
Duke Energy Indiana2 2 
Piedmont2 2 
Additional losses in excess of recorded reserves that could be incurred for the stages of investigation, remediation and monitoring for environmental sites that have been evaluated at this time are not material.
LITIGATION
For open litigation, unless otherwise noted, Duke Energy and the Subsidiary Registrants cannot predict the outcome or ultimate resolution of their respective matters.
Duke Energy
Mooresville Coal Ash Class Action Litigation
On December 20, 2024, 15 plaintiffs filed a lawsuit in Iredell County, North Carolina, against Duke Energy (Parent), Duke Energy Carolinas and Duke Energy Progress (collectively “Duke Energy”) on behalf of a putative class alleging past and ongoing environmental contamination in the Mooresville area of North Carolina. The lawsuit alleges that Duke Energy disposed of and sold coal ash as structural fill resulting in the contamination of soil, groundwater and Lake Norman. The plaintiffs claim that Duke Energy failed to properly remediate the contamination and continues to pollute, and they assert that the contamination has negatively impacted property values. The plaintiffs are seeking unspecified compensatory and punitive damages, injunctive relief to stop further contamination, remediation of contaminated areas and attorneys' fees and costs. On July 28, 2025, the plaintiffs filed an amended complaint, which asserts claims for negligence, negligence per se, gross negligence, private nuisance, strict liability for ultra-hazardous activities and trespass. On September 11, 2025, Duke Energy filed its answer to the plaintiff's amended complaint and a motion for judgment on the pleadings. Following a hearing on December 29, 2025, the court entered an interim order dismissing the plaintiffs’ strict liability claim. On February 4, 2026, the court entered an order denying the remainder of Duke Energy’s motion for judgment on the pleadings. A scheduling order has not yet been issued.
Nuclear Compensation Class Action Litigation
On July 11, 2025, plaintiffs Leo Dorrell and John Dunn filed a putative class action lawsuit in the U.S. District Court for the District of Maryland against all U.S. commercial nuclear power operators, including Duke Energy Corporation (Parent) and Progress Energy. The plaintiffs allege that the nuclear power industry engaged in a conspiracy to suppress compensation by exchanging salary information since 2003, in violation of Section 1 of the Sherman Act. The lawsuit seeks unspecified monetary damages, including treble damages, on behalf of current and former employees in the nuclear power industry as well as injunctive relief. On October 15, 2025, all defendants jointly filed an omnibus motion to dismiss all claims in the complaint and Duke Energy also joined a motion filed by several defendants to dismiss for lack of personal jurisdiction. On November 5, 2025, the plaintiffs filed an amended complaint adding Duke Energy Carolinas and Duke Energy Business Services as defendants and including more factual allegations to support their complaint. Although not named as a defendant, Duke Energy Progress is accused of having participated in the alleged conspiracy. The defendants filed their omnibus motion to dismiss on December 19, 2025, to which the plaintiffs responded on February 6, 2026. The defendants' reply is due on March 16, 2026.
Duke Energy Carolinas
NTE Carolinas II, LLC Litigation
In November 2017, Duke Energy Carolinas entered into a standard FERC large generator interconnection agreement (LGIA) with NTE Carolinas II, LLC (NTE), a company that proposed to build a combined-cycle natural gas plant in Rockingham County, North Carolina. In September 2019, Duke Energy Carolinas filed a lawsuit in Mecklenburg County Superior Court against NTE for breach of contract, alleging that NTE's failure to pay benchmark payments for Duke Energy Carolinas' transmission system upgrades required under the interconnection agreement constituted a termination of the interconnection agreement. Duke Energy Carolinas sought a monetary judgment against NTE because NTE failed to make multiple milestone payments. The lawsuit was moved to federal court in North Carolina. NTE filed a motion to dismiss Duke Energy Carolinas’ complaint and brought counterclaims alleging anti-competitive conduct and violations of state and federal statutes. Duke Energy Carolinas filed a motion to dismiss NTE's counterclaims. Both NTE's and Duke Energy Carolinas' motions to dismiss were subsequently denied by the court.
On May 21, 2020, in response to a NTE petition challenging Duke Energy Carolinas' termination of the LGIA, FERC issued a ruling that 1) it has exclusive jurisdiction to determine whether a transmission provider may terminate an LGIA; 2) FERC approval is required to terminate a conforming LGIA if objected to by the interconnection customer; and 3) Duke Energy may not announce the termination of a conforming LGIA unless FERC has approved the termination. FERC's Office of Enforcement also initiated an investigation of Duke Energy Carolinas into matters pertaining to the LGIA. In April 2023, Duke Energy Carolinas received notice from the FERC Office of Enforcement that they have closed their non-public investigation with no further action recommended.
Following completion of discovery, Duke Energy Carolinas filed a motion for summary judgment seeking a ruling in its favor as to some of its affirmative claims against NTE and to all of NTE’s counterclaims. On June 24, 2022, the court issued an order partially granting Duke Energy Carolinas' motion by dismissing NTE's counterclaims that Duke Energy Carolinas engaged in anti-competitive behavior in violation of state and federal statutes. In October 2022, the parties executed a settlement agreement with respect to the remaining breach of contract claims in the litigation and a Stipulation of Dismissal was filed with the court.
In November 2022, NTE filed its Notice of Appeal to the U.S. Court of Appeals for the Fourth Circuit as to the district court's summary judgment ruling in Duke Energy Carolinas' favor on NTE's antitrust and unfair competition claims. On August 5, 2024, the U.S. Court of Appeals for the Fourth Circuit reversed the district court's grant of summary judgment and remanded the case back to the district court for further proceedings. In August 2024, Duke Energy Carolinas filed a petition for rehearing, which was denied on November 26, 2024. On February 21, 2025, Duke Energy Carolinas filed a petition seeking review by the U.S. Supreme Court. On January 12, 2026, the U.S. Supreme Court denied the petition seeking review. The district court judge has set the case for trial on March 9, 2026.
Asbestos-related Injuries and Damages Claims
Duke Energy Carolinas has experienced numerous claims for indemnification and medical cost reimbursement related to asbestos exposure. These claims relate to damages for bodily injuries alleged to have arisen from exposure to or use of asbestos in connection with construction and maintenance activities conducted on its electric generation plants prior to 1985.
Duke Energy Carolinas has recognized asbestos-related reserves of $395 million and $396 million at December 31, 2025, and 2024, respectively. These reserves are classified in Other within Other Noncurrent Liabilities and Other within Current Liabilities on the Consolidated Balance Sheets. These reserves are based on Duke Energy Carolinas' best estimate for current and future asbestos claims through 2045 and are recorded on an undiscounted basis. In light of the uncertainties inherent in a longer-term forecast, management does not believe they can reasonably estimate the indemnity and medical costs that might be incurred after 2045 related to such potential claims. It is possible Duke Energy Carolinas may incur asbestos liabilities in excess of the recorded reserves.
Duke Energy Carolinas has third-party insurance to cover certain losses related to asbestos-related injuries and damages above an aggregate self-insured retention. Receivables for insurance recoveries were $555 million and $539 million at December 31, 2025, and 2024, respectively. These amounts are classified in Other within Other Noncurrent Assets and Receivables within Current Assets on the Consolidated Balance Sheets. Any future payments up to the policy limit will be reimbursed by the third-party insurance carrier. Duke Energy Carolinas is not aware of any uncertainties regarding the legal sufficiency of insurance claims. Duke Energy Carolinas believes the insurance recovery asset is probable of recovery as the insurance carrier continues to have a strong financial strength rating.
The reserve for credit losses for insurance receivables for the asbestos-related injuries and damages is $9 million as of December 31, 2025, and December 31, 2024, for both Duke Energy and Duke Energy Carolinas. The insurance receivable is evaluated based on the risk of default and the historical losses, current conditions and expected conditions around collectability. Management evaluates the risk of default annually based on payment history, credit rating and changes in the risk of default from credit agencies.
Duke Energy Indiana
Coal Ash Insurance Coverage Litigation
In June 2022, Duke Energy Indiana filed a civil action in Indiana Superior Court against various insurance companies seeking declaratory relief with respect to insurance coverage for CCR-related expenses and liabilities covered by third-party liability insurance policies. The insurance policies cover the 1969-1972 and 1984-1985 periods and provide third-party liability insurance for claims and suits alleging property damage, bodily injury and personal injury (or a combination thereof). In June 2024, Duke Energy Indiana filed an amended complaint adding several additional insurance companies as defendants to the litigation. During 2023 through 2025, Duke Energy Indiana reached confidential settlements with various insurance companies, the results of which were not material to Duke Energy. All settlement payments have been received and the case has been dismissed. In July 2025, Duke Energy Indiana began refunding retail customers their share of coal ash insurance settlement proceeds, after expenses, over one year.
Other Litigation and Legal Proceedings
The Duke Energy Registrants are involved in other legal, tax and regulatory proceedings arising in the ordinary course of business, some of which involve significant amounts. The Duke Energy Registrants believe the final disposition of these proceedings will not have a material effect on their results of operations, cash flows or financial position. Reserves are classified on the Consolidated Balance Sheets in Other within Other Noncurrent Liabilities and Other within Current Liabilities.
OTHER COMMITMENTS AND CONTINGENCIES
General
As part of their normal business, the Duke Energy Registrants are party to various financial guarantees, performance guarantees and other contractual commitments to extend guarantees of credit and other assistance to various subsidiaries, investees and other third parties. These guarantees involve elements of performance and credit risk, which are not fully recognized on the Consolidated Balance Sheets and have uncapped maximum potential payments. However, the Duke Energy Registrants do not believe these guarantees will have a material effect on their results of operations, cash flows or financial position. See Notes 2 and 8 for more information.
Purchase Obligations
Purchased Power
Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana have ongoing purchased power contracts with other utilities, wholesale marketers, co-generators and qualified facilities. These purchased power contracts generally provide for capacity and energy payments. In addition, Duke Energy Progress has various contracts to secure transmission rights.
The following table presents executory purchased power contracts with terms exceeding one year, excluding contracts classified as leases.
  Minimum Purchase Amount at December 31, 2025
Contract
(in millions) Expiration20262027202820292030ThereafterTotal
Duke Energy Progress(a)
2028-2042
$18 $18 $18 $2 $3 $29 $88 
Duke Energy Ohio(b)
2027191 125 — — — — 316 
Duke Energy Indiana(b)
2027
73 7 — — — — 80 
(a)    Contracts represent between 18% and 100% of net plant output.
(b)    Share of net plant output varies.
Natural Gas Supply and Capacity Contracts
Duke Energy Ohio and Piedmont routinely enter into long-term natural gas supply commodity and capacity commitments and other agreements that commit future cash flows to acquire services needed in their businesses. These commitments include pipeline and storage capacity contracts and natural gas supply contracts to provide service to customers. Costs arising from the natural gas supply commodity and capacity commitments, while significant, are pass-through costs to customers and are generally fully recoverable through specific fuel rate components operating in conjunction with PGA procedures, and subject to periodic prudence reviews in North Carolina and South Carolina. In the Midwest, these costs are recovered via the Gas Cost Recovery Rate in Ohio or the Gas Cost Adjustment Clause in Kentucky. The time periods for fixed payments under pipeline and storage capacity contracts are up to 17 years. The time periods for fixed payments under natural gas supply contracts is up to 10 years. The time periods for the natural gas supply purchase commitments is up to five years.
Certain storage and pipeline capacity contracts require the payment of demand charges that are based on rates approved by the FERC in order to maintain rights to access the natural gas storage or pipeline capacity on a firm basis during the contract term. The demand charges that are incurred in each period are recognized in the Consolidated Statements of Operations and Comprehensive Income as part of natural gas purchases and are included in Cost of natural gas.
The following table presents future unconditional purchase obligations under natural gas supply and capacity contracts as of December 31, 2025.
(in millions)20262027202820292030ThereafterTotal
Duke Energy Ohio$133 $136 $135 $131 $118 $828 $1,481 
Piedmont414 400 335 265 262 605 2,281 
v3.25.4
Leases
 12 Months Ended
Dec. 31, 2025
Leases [Abstract]  
Leases LEASES
As part of its operations, Duke Energy leases certain aviation facilities, space on communication towers, dedicated host servers, industrial equipment, fleet vehicles, fuel transportation (barges and railcars), land and office space under various terms and expiration dates. Additionally, Duke Energy Carolinas, Duke Energy Progress and Duke Energy Indiana have finance leases related to firm natural gas pipeline transportation capacity. Duke Energy Progress and Duke Energy Florida have entered into certain purchase power agreements, which are classified as finance and operating leases.
Duke Energy has certain lease agreements, which include variable lease payments that are based on the usage of an asset. These variable lease payments are not included in the measurement of the ROU assets or operating lease liabilities on the Consolidated Financial Statements.
Certain Duke Energy lease agreements include options for renewal and early termination. The intent to renew a lease varies depending on the lease type and asset. Renewal options that are reasonably certain to be exercised are included in the lease measurements. The decision to terminate a lease early is dependent on various economic factors. No termination options have been included in any of the lease measurements.
In December 2019, Duke Energy Carolinas entered into a sale-leaseback arrangement to construct and occupy an office tower. The lease agreement was evaluated as a sale-leaseback of real estate but did not qualify for sale-leaseback accounting. As a result, the transaction is accounted for as a financing. Duke Energy Carolinas recorded the real estate on the Consolidated Balance Sheets within Property, Plant and Equipment as if it is the legal owner and recognizes depreciation expense over the estimated useful life. In addition, the failed sale-leaseback obligation is reported within Long-Term Debt on the Consolidated Balance Sheets with the monthly lease payments split between interest expense and debt principal.
Piedmont has certain agreements for the construction and transportation of natural gas pipelines to supply Duke Energy Carolinas' natural gas plant needs. Piedmont accounts for these pipeline lateral contracts as sales-type leases since the present value of the sum of the lease payments equals the fair value of the assets. These pipeline lateral assets owned by Piedmont had a current net investment basis of $3 million and $2 million as of December 31, 2025, and 2024, and a long-term net investment basis of $194 million and $197 million as of December 31, 2025, and 2024, respectively. These assets are classified in Other, within Current Assets and Other Noncurrent Assets, respectively, on Piedmont's Consolidated Balance Sheets. Duke Energy Carolinas accounts for the contracts as finance leases. The activity for these contracts is eliminated in consolidation at Duke Energy.
The following tables present the components of lease expense.
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Operating lease expense(a)
$283 $60 $181 $91 $90 $14 $27 $1 
Short-term lease expense(a)
6 — 3 — 3 — 1 — 
Variable lease expense(a)
39 2 35 26 9 — 1 1 
Finance lease expense
Amortization of leased assets(b)
64 12 53 43 10 — 2 — 
Interest on lease liabilities(c)
40 30 43 39 4 — 1 — 
Total finance lease expense104 42 96 82 14 — 3 — 
Total lease expense$432 $104 $315 $199 $116 $14 $32 $2 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Operating lease expense(a)
$275 $66 $173 $82 $91 $12 $23 $2 
Short-term lease expense(a)
7 — 3 1 2 — 1 — 
Variable lease expense(a)
33 2 29 19 10 — 1 1 
Finance lease expense
Amortization of leased assets(b)
113 7 46 38 8 — — — 
Interest on lease liabilities(c)
41 31 44 41 3 — 1 — 
Total finance lease expense154 38 90 79 11 — 1 — 
Total lease expense$469 $106 $295 $181 $114 $12 $26 $3 
(a)    Included in Operation, maintenance and other, except for expenses primarily related to barges and railcars, which is included in Fuel used in electric generation and purchased power on the Consolidated Statements of Operations.
(b)    Included in Depreciation and amortization on the Consolidated Statements of Operations.
(c)    Included in Interest Expense on the Consolidated Statements of Operations.
The following table presents operating lease maturities and a reconciliation of the undiscounted cash flows to operating lease liabilities.
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
2026$289 $24 $126 $61 $65 $1 $7 $1 
2027239 18 98 61 37 1 6 1 
2028200 15 83 60 23 1 4 1 
2029171 12 81 59 22 — 4 — 
2030136 9 73 59 14 — 3 — 
Thereafter539 44 368 231 137 3 17 — 
Total operating lease payments1,574 122 829 531 298 6 41 3 
Less: Present value discount
(303)(23)(177)(104)(73)(1)(7)— 
Total operating lease liabilities(a)
$1,271 $99 $652 $427 $225 $5 $34 $3 
(a)    Certain operating lease payments include renewal options that are reasonably certain to be exercised.
The following table presents finance lease maturities and a reconciliation of the undiscounted cash flows to finance lease liabilities.
December 31, 2025
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndiana
2026$95 $40 $94 $81 $13 $2 
202788 40 91 82 9 2 
202884 39 90 82 8 1 
202981 38 90 82 8 1 
203082 39 90 82 8 1 
Thereafter497 319 437 323 114 18 
Total finance lease payments927 515 892 732 160 25 
Less: Amounts representing interest
(351)(243)(323)(251)(72)(15)
Total finance lease liabilities$576 $272 $569 $481 $88 $10 
The following tables contain additional information related to leases.
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)ClassificationEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Assets
OperatingOperating lease ROU assets, net$1,241 $91 $607 $386 $221 $5 $32 $2 
FinanceNet property, plant and equipment654 251 605 478 127 — 8 — 
Total lease assets$1,895 $342 $1,212 $864 $348 $5 $40 $2 
Liabilities
Current
OperatingOther current liabilities$238 $20 $100 $43 $57 $— $6 $1 
FinanceCurrent maturities of long-term debt55 11 53 45 8 — — — 
Noncurrent
OperatingOperating lease liabilities1,033 79 552 384 168 5 28 2 
FinanceLong-Term Debt521 261 516 436 80 — 10 — 
Total lease liabilities$1,847 $371 $1,221 $908 $313 $5 $44 $3 
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)ClassificationEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Assets
OperatingOperating lease ROU assets, net$1,148 $98 $625 $348 $277 $6 $37 $4 
FinanceNet property, plant and equipment645 252 620 512 108 — 6 — 
Total lease assets$1,793 $350 $1,245 $860 $385 $6 $43 $4 
Liabilities
Current
OperatingOther current liabilities$208 $20 $97 $42 $55 $1 $6 $1 
FinanceCurrent maturities of long-term debt46 8 48 41 7 — — — 
Noncurrent
OperatingOperating lease liabilities957 87 557 332 225 6 33 7 
FinanceLong-Term Debt524 262 533 474 59 — 10 — 
Total lease liabilities$1,735 $377 $1,235 $889 $346 $7 $49 $8 
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Cash paid for amounts included in the measurement of lease liabilities(a)
Operating cash flows from operating leases$277 $24 $122 $56 $66 $1 $8 $1 
Operating cash flows from finance leases40 30 43 39 4 — 1 — 
Financing cash flows from finance leases64 12 53 43 10 — 2 — 
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating
$348 $4 $6 $6 $— $— $1 $— 
Finance72 15 40 9 31 — 2 — 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Cash paid for amounts included in the measurement of lease liabilities(a)
Operating cash flows from operating leases$250 $24 $122 $57 $65 $1 $8 $1 
Operating cash flows from finance leases41 31 44 41 3 — 1 — 
Financing cash flows from finance leases113 7 46 38 8 — — — 
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating
$322 $50 $43 $3 $40 $— $7 $3 
Finance81 1 55 — 55 — 1 — 
(a)    No amounts were classified as investing cash flows from operating leases.
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Weighted average remaining lease term (years)
Operating leases89109121193
Finance leases1214111021— 19— 
Weighted average discount rate(a)
Operating leases4.5 %4.4 %4.4 %4.4 %4.3 %4.2 %3.9 %4.0 %
Finance leases8.2 %11.3 %8.6 %9.2 %5.8 %— %11.6 %— %
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Weighted average remaining lease term (years)
Operating leases89981111114
Finance leases1115111015— 20— 
Weighted average discount rate(a)
Operating leases4.3 %4.3 %4.0 %3.9 %4.2 %4.1 %4.0 %3.9 %
Finance leases8.4 %11.5 %8.9 %9.2 %5.9 %— %11.7 %— %
(a)    The discount rate is calculated using the rate implicit in a lease if it is readily determinable. Generally, the rate used by the lessor is not provided to Duke Energy and in these cases the incremental borrowing rate is used. Duke Energy will typically use its fully collateralized incremental borrowing rate as of the commencement date to calculate and record the lease. The incremental borrowing rate is influenced by the lessee’s credit rating and lease term and as such may differ for individual leases, embedded leases or portfolios of leased assets.
Leases LEASES
As part of its operations, Duke Energy leases certain aviation facilities, space on communication towers, dedicated host servers, industrial equipment, fleet vehicles, fuel transportation (barges and railcars), land and office space under various terms and expiration dates. Additionally, Duke Energy Carolinas, Duke Energy Progress and Duke Energy Indiana have finance leases related to firm natural gas pipeline transportation capacity. Duke Energy Progress and Duke Energy Florida have entered into certain purchase power agreements, which are classified as finance and operating leases.
Duke Energy has certain lease agreements, which include variable lease payments that are based on the usage of an asset. These variable lease payments are not included in the measurement of the ROU assets or operating lease liabilities on the Consolidated Financial Statements.
Certain Duke Energy lease agreements include options for renewal and early termination. The intent to renew a lease varies depending on the lease type and asset. Renewal options that are reasonably certain to be exercised are included in the lease measurements. The decision to terminate a lease early is dependent on various economic factors. No termination options have been included in any of the lease measurements.
In December 2019, Duke Energy Carolinas entered into a sale-leaseback arrangement to construct and occupy an office tower. The lease agreement was evaluated as a sale-leaseback of real estate but did not qualify for sale-leaseback accounting. As a result, the transaction is accounted for as a financing. Duke Energy Carolinas recorded the real estate on the Consolidated Balance Sheets within Property, Plant and Equipment as if it is the legal owner and recognizes depreciation expense over the estimated useful life. In addition, the failed sale-leaseback obligation is reported within Long-Term Debt on the Consolidated Balance Sheets with the monthly lease payments split between interest expense and debt principal.
Piedmont has certain agreements for the construction and transportation of natural gas pipelines to supply Duke Energy Carolinas' natural gas plant needs. Piedmont accounts for these pipeline lateral contracts as sales-type leases since the present value of the sum of the lease payments equals the fair value of the assets. These pipeline lateral assets owned by Piedmont had a current net investment basis of $3 million and $2 million as of December 31, 2025, and 2024, and a long-term net investment basis of $194 million and $197 million as of December 31, 2025, and 2024, respectively. These assets are classified in Other, within Current Assets and Other Noncurrent Assets, respectively, on Piedmont's Consolidated Balance Sheets. Duke Energy Carolinas accounts for the contracts as finance leases. The activity for these contracts is eliminated in consolidation at Duke Energy.
The following tables present the components of lease expense.
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Operating lease expense(a)
$283 $60 $181 $91 $90 $14 $27 $1 
Short-term lease expense(a)
6 — 3 — 3 — 1 — 
Variable lease expense(a)
39 2 35 26 9 — 1 1 
Finance lease expense
Amortization of leased assets(b)
64 12 53 43 10 — 2 — 
Interest on lease liabilities(c)
40 30 43 39 4 — 1 — 
Total finance lease expense104 42 96 82 14 — 3 — 
Total lease expense$432 $104 $315 $199 $116 $14 $32 $2 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Operating lease expense(a)
$275 $66 $173 $82 $91 $12 $23 $2 
Short-term lease expense(a)
7 — 3 1 2 — 1 — 
Variable lease expense(a)
33 2 29 19 10 — 1 1 
Finance lease expense
Amortization of leased assets(b)
113 7 46 38 8 — — — 
Interest on lease liabilities(c)
41 31 44 41 3 — 1 — 
Total finance lease expense154 38 90 79 11 — 1 — 
Total lease expense$469 $106 $295 $181 $114 $12 $26 $3 
(a)    Included in Operation, maintenance and other, except for expenses primarily related to barges and railcars, which is included in Fuel used in electric generation and purchased power on the Consolidated Statements of Operations.
(b)    Included in Depreciation and amortization on the Consolidated Statements of Operations.
(c)    Included in Interest Expense on the Consolidated Statements of Operations.
The following table presents operating lease maturities and a reconciliation of the undiscounted cash flows to operating lease liabilities.
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
2026$289 $24 $126 $61 $65 $1 $7 $1 
2027239 18 98 61 37 1 6 1 
2028200 15 83 60 23 1 4 1 
2029171 12 81 59 22 — 4 — 
2030136 9 73 59 14 — 3 — 
Thereafter539 44 368 231 137 3 17 — 
Total operating lease payments1,574 122 829 531 298 6 41 3 
Less: Present value discount
(303)(23)(177)(104)(73)(1)(7)— 
Total operating lease liabilities(a)
$1,271 $99 $652 $427 $225 $5 $34 $3 
(a)    Certain operating lease payments include renewal options that are reasonably certain to be exercised.
The following table presents finance lease maturities and a reconciliation of the undiscounted cash flows to finance lease liabilities.
December 31, 2025
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndiana
2026$95 $40 $94 $81 $13 $2 
202788 40 91 82 9 2 
202884 39 90 82 8 1 
202981 38 90 82 8 1 
203082 39 90 82 8 1 
Thereafter497 319 437 323 114 18 
Total finance lease payments927 515 892 732 160 25 
Less: Amounts representing interest
(351)(243)(323)(251)(72)(15)
Total finance lease liabilities$576 $272 $569 $481 $88 $10 
The following tables contain additional information related to leases.
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)ClassificationEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Assets
OperatingOperating lease ROU assets, net$1,241 $91 $607 $386 $221 $5 $32 $2 
FinanceNet property, plant and equipment654 251 605 478 127 — 8 — 
Total lease assets$1,895 $342 $1,212 $864 $348 $5 $40 $2 
Liabilities
Current
OperatingOther current liabilities$238 $20 $100 $43 $57 $— $6 $1 
FinanceCurrent maturities of long-term debt55 11 53 45 8 — — — 
Noncurrent
OperatingOperating lease liabilities1,033 79 552 384 168 5 28 2 
FinanceLong-Term Debt521 261 516 436 80 — 10 — 
Total lease liabilities$1,847 $371 $1,221 $908 $313 $5 $44 $3 
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)ClassificationEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Assets
OperatingOperating lease ROU assets, net$1,148 $98 $625 $348 $277 $6 $37 $4 
FinanceNet property, plant and equipment645 252 620 512 108 — 6 — 
Total lease assets$1,793 $350 $1,245 $860 $385 $6 $43 $4 
Liabilities
Current
OperatingOther current liabilities$208 $20 $97 $42 $55 $1 $6 $1 
FinanceCurrent maturities of long-term debt46 8 48 41 7 — — — 
Noncurrent
OperatingOperating lease liabilities957 87 557 332 225 6 33 7 
FinanceLong-Term Debt524 262 533 474 59 — 10 — 
Total lease liabilities$1,735 $377 $1,235 $889 $346 $7 $49 $8 
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Cash paid for amounts included in the measurement of lease liabilities(a)
Operating cash flows from operating leases$277 $24 $122 $56 $66 $1 $8 $1 
Operating cash flows from finance leases40 30 43 39 4 — 1 — 
Financing cash flows from finance leases64 12 53 43 10 — 2 — 
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating
$348 $4 $6 $6 $— $— $1 $— 
Finance72 15 40 9 31 — 2 — 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Cash paid for amounts included in the measurement of lease liabilities(a)
Operating cash flows from operating leases$250 $24 $122 $57 $65 $1 $8 $1 
Operating cash flows from finance leases41 31 44 41 3 — 1 — 
Financing cash flows from finance leases113 7 46 38 8 — — — 
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating
$322 $50 $43 $3 $40 $— $7 $3 
Finance81 1 55 — 55 — 1 — 
(a)    No amounts were classified as investing cash flows from operating leases.
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Weighted average remaining lease term (years)
Operating leases89109121193
Finance leases1214111021— 19— 
Weighted average discount rate(a)
Operating leases4.5 %4.4 %4.4 %4.4 %4.3 %4.2 %3.9 %4.0 %
Finance leases8.2 %11.3 %8.6 %9.2 %5.8 %— %11.6 %— %
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Weighted average remaining lease term (years)
Operating leases89981111114
Finance leases1115111015— 20— 
Weighted average discount rate(a)
Operating leases4.3 %4.3 %4.0 %3.9 %4.2 %4.1 %4.0 %3.9 %
Finance leases8.4 %11.5 %8.9 %9.2 %5.9 %— %11.7 %— %
(a)    The discount rate is calculated using the rate implicit in a lease if it is readily determinable. Generally, the rate used by the lessor is not provided to Duke Energy and in these cases the incremental borrowing rate is used. Duke Energy will typically use its fully collateralized incremental borrowing rate as of the commencement date to calculate and record the lease. The incremental borrowing rate is influenced by the lessee’s credit rating and lease term and as such may differ for individual leases, embedded leases or portfolios of leased assets.
v3.25.4
Debt and Credit Facilities
 12 Months Ended
Dec. 31, 2025
Debt Disclosure [Abstract]  
Debt and Credit Facilities DEBT AND CREDIT FACILITIES
Summary of Debt and Related Terms
The following tables summarize outstanding debt.
 December 31, 2025
Weighted
AverageDukeDukeDukeDukeDuke
InterestDukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) Rate EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Unsecured debt, maturing 2026-20824.63 %$35,585 $1,150 $1,800 $— $150 $1,285 $386 $4,275 
Secured debt, maturing 2028-20523.85 %4,279 2,115 2,109 1,290 818 — — — 
First mortgage bonds, maturing 2026-2074(a)
4.33 %44,289 15,053 21,923 11,576 10,349 3,075 4,238 — 
Finance leases, maturing 2027-2064576 272 569 481 88 — 10 — 
Tax-exempt bonds, maturing 2027-2046(b)
3.54 %1,331 — 500 500 — 77 352 — 
Notes payable and commercial paper(c)
3.95 %3,254 — — — — — — — 
Money pool/intercompany borrowings — 300 150 150 — 38 325 609 
Fair value hedge carrying value adjustment  176 — — — — — — — 
Unamortized debt discount and premium, net(d)
 762 (20)(44)(25)(19)(22)(16)(7)
Unamortized debt issuance costs(e)
(416)(93)(159)(76)(79)(20)(27)(17)
Total debt 4.41 %$89,836 $18,777 $26,848 $13,896 $11,307 $4,433 $5,268 $4,860 
Short-term notes payable and commercial paper  (2,624)— — — — — — — 
Short-term money pool/intercompany borrowings — — — — — (13)(175)(609)
Current maturities of long-term debt(f)
 (7,104)(629)(722)(285)(437)(45)(4)(490)
Total long-term debt(f)
$80,108 $18,148 $26,126 $13,611 $10,870 $4,375 $5,089 $3,761 
(a)Substantially all electric utility property is mortgaged under mortgage bond indentures.
(b)Substantially all tax-exempt bonds are secured by first mortgage bonds, letters of credit or the Master Credit Facility.
(c)Includes $625 million classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy's commercial paper program was 21 days.
(d)Duke Energy includes $855 million and $45 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively.
(e)Duke Energy includes $21 million in purchase accounting adjustments primarily related to the merger with Progress Energy.
(f)Refer to Note 18 for additional information on amounts from consolidated VIEs.
 December 31, 2024
Weighted
AverageDukeDukeDukeDukeDuke
InterestDukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) Rate EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Unsecured debt, maturing 2025-2082
4.53 %$34,283 $1,605 $2,085 $185 $250 $1,380 $390 $4,030 
Secured debt, maturing 2025-2052
3.75 %3,672 1,463 2,147 1,269 879 — — — 
First mortgage bonds, maturing 2025-2074(a)
4.24 %39,842 13,955 19,223 9,974 9,247 2,722 3,937 — 
Finance leases, maturing 2027-2054
570 270 581 515 66 — 10 — 
Tax-exempt bonds, maturing 2027-2046(b)
3.85 %1,331 — 500 500 — 77 352 — 
Notes payable and commercial paper(c)
4.67 %4,213 — — — — — — — 
Money pool/intercompany borrowings— 300 1,227 761 467 189 160 739 
Fair value hedge carrying value adjustment(82)— — — — — — — 
Unamortized debt discount and premium, net(d)
845 (20)(44)(24)(19)(23)(16)(8)
Unamortized debt issuance costs(e)
(401)(83)(146)(65)(76)(18)(25)(19)
Total debt 4.37 %$84,273 $17,490 $25,573 $13,115 $10,814 $4,327 $4,808 $4,742 
Short-term notes payable and commercial paper  (3,584)— — — — — — — 
Short-term money pool/intercompany borrowings — — (1,077)(611)(466)(162)(10)(739)
Current maturities of long-term debt(f)
 (4,349)(521)(1,517)(983)(534)(245)(4)(205)
Total long-term debt(f)
$76,340 $16,969 $22,979 $11,521 $9,814 $3,920 $4,794 $3,798 
(a)    Substantially all electric utility property is mortgaged under mortgage bond indentures.
(b)    Substantially all tax-exempt bonds are secured by first mortgage bonds, letters of credit or the Master Credit Facility.
(c)    Includes $625 million that was classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy's commercial paper programs was 13 days.
(d)    Duke Energy includes $925 million and $56 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively.
(e)    Duke Energy includes $23 million in purchase accounting adjustments primarily related to the merger with Progress Energy.
(f)     Refer to Note 18 for additional information on amounts from consolidated VIEs.
Current Maturities of Long-Term Debt
The following table shows the significant components of Current maturities of Long-Term Debt on the Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings.
(in millions)Maturity DateInterest RateDecember 31, 2025
Unsecured Debt
Duke Energy (Parent) Convertible Senior NotesApril 20264.125 %1,725 
Piedmont Term Loan Facility(a)
August 20264.611 %450 
Duke Energy (Parent)September 20262.650 %1,500 
Duke Energy (Parent) Term Loan Facility(a)
September 20264.704 %2,000 
First Mortgage Bonds
Duke Energy Carolinas
December 2026
2.950 %600 
Duke Energy Florida(a)(b)
October 2073
3.981 %200 
Duke Energy Florida(a)(b)
April 20743.981 %173 
Duke Energy Progress(c)
October 2046
3.300 %200 
Other(d)
256 
Current maturities of long-term debt$7,104 
(a)    Debt has a floating interest rate.
(b)    These first mortgage bonds are classified as Current maturities of long-term debt on the Consolidated Balance Sheets based on terms of the indentures, which could require repayment in less than 12 months if exercised by the bondholders.
(c)    These tax-exempt bonds are secured by first mortgage bonds and are classified as Current maturities of long-term debt on the Consolidated Balance Sheets as of December 31, 2025, due to a mandatory put option expiring October 1, 2026. Duke Energy Progress anticipates remarketing the bonds and the securities are expected to be reclassified to Long-Term Debt at that time.
(d)    Includes finance lease obligations, amortizing debt, tax-exempt bonds with mandatory put options and small bullet maturities.
Maturities and Call Options
The following table shows the annual maturities of long-term debt for the next five years and thereafter. Amounts presented exclude short-term notes payable, commercial paper and money pool borrowings and debt issuance costs for the Subsidiary Registrants.
 December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)
Energy(a)
CarolinasEnergyProgressFloridaOhioIndianaPiedmont
2026$7,123 $630 $730 $287 $443 $45 $4 $490 
20273,639 67 1,322 604 718 77 28 300 
20284,079 1,018 1,427 608 819 40 7 — 
20294,554 522 1,634 863 771 505 5 660 
20304,433 1,277 1,481 371 1,111 528 155 — 
Thereafter63,037 15,375 20,459 11,265 7,543 3,267 4,937 2,826 
Total long-term debt, including current maturities$86,865 $18,889 $27,053 $13,998 $11,405 $4,462 $5,136 $4,276 
(a)    Excludes $921 million in purchase accounting adjustments related to the Progress Energy merger and the Piedmont acquisition.
The Duke Energy Registrants have the ability under certain debt facilities to call and repay the obligation prior to its scheduled maturity. Therefore, the actual timing of future cash repayments could be materially different than as presented above.
Short-Term Obligations Classified as Long-Term Debt
Tax-exempt bonds that may be put to the Duke Energy Registrants at the option of the holder and certain commercial paper issuances and money pool borrowings are classified as Long-Term Debt on the Consolidated Balance Sheets. These tax-exempt bonds, commercial paper issuances and money pool borrowings, which are short-term obligations by nature, are classified as long-term due to Duke Energy’s intent and ability to utilize such borrowings as long-term financing. As Duke Energy’s Master Credit Facility and other bilateral letter of credit agreements have non-cancelable terms in excess of one year as of the balance sheet date, Duke Energy has the ability to refinance these short-term obligations on a long-term basis. The following tables show short-term obligations classified as long-term debt.
 Balance at December 31, 2025 and 2024
DukeDukeDukeDuke
DukeEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasProgressOhioIndiana
Tax-exempt bonds $312 $— $— $27 $285 
Commercial paper(a)
625 300 150 25 150 
Total $937 $300 $150 $52 $435 
(a)    Progress Energy amounts are equal to Duke Energy Progress amounts.
Summary of Significant Debt Issuances
The following tables summarize significant debt issuances (in millions).
Year Ended December 31, 2025
DukeDukeDukeDukeDukeDuke
MaturityInterestDukeEnergyEnergyEnergyEnergyEnergyEnergy
Issuance DateDateRateEnergy(Parent)CarolinasProgressFloridaOhioIndiana
Unsecured Debt
August 2025(e)
September 2030
5.410 %$68 $— $— $— $— $68 $— 
August 2025(e)
September 2035
6.010 %43 — — — — 43 — 
August 2025(e)
September 2037
6.110 %40 — — — — 40 — 
September 2025(f)
September 2035
4.950 %1,000 1,000 — — — — — 
September 2025(f)
September 2055
5.700 %750 750 — — — — — 
Secured Debt
September 2025(g)
July 2037
4.226 %200 — 200 $— — — — 
September 2025(g)
January 2048
5.070 %382 — 382 — — — — 
September 2025(g)
January 2048
4.890 %461 — — 461 — — — 
November 2025(g)
March 2046
4.898 %561 — 561 — — — — 
First Mortgage Bonds
January 2025(a)
March 2030
4.850 %$400 $— $400 $— $— $— $— 
January 2025(a)
March 2035
5.250 %700 — 700 — — — — 
March 2025(b)
March 2027
4.350 %500 — — 500 — — — 
March 2025(b)
March 2035
5.050 %850 — — 850 — — — 
March 2025(b)
March 2055
5.550 %750 — — 750 — — — 
May 2025(c)
May 2055
5.900 %300 — — — — — 300 
June 2025(d)
June 2035
5.300 %350 — — — — 350 — 
November 2025(c)
December 2030
4.200 %500 — — — 500 — — 
November 2025(c)
December 2035
4.850 %600 — — — 600 — — 
Total issuances$7,005 $1,750 $2,243 $2,561 $1,100 $501 $300 
(a)Proceeds were used to repay the $500 million DERF accounts receivable securitization facility due January 2025, to pay down short-term debt and for general company purposes.
(b)Proceeds were used to repay the $400 million DEPR accounts receivable securitization facility due April 2025, to pay down short-term debt and for general company purposes.
(c)Proceeds were used to pay down short-term debt and for general company purposes.
(d)Proceeds were used to repay $150 million of maturities due June 2025, to pay down short-term debt and for general corporate purposes.
(e)Proceeds were used to repay $95 million of maturities due October 2025, repay $45 million of maturities due January 2026, pay down short-term debt and for general corporate purposes.
(f)Proceeds were used to repay $650 million of maturities due September 2025, repay $500 million of maturities due December 2025, to pay down short-term debt and for general corporate purposes.
(g)Proceeds were used to recover previously incurred storm costs, repay the Duke Energy Carolinas and Duke Energy Progress term loan facilities and for general company purposes.
Year Ended December 31, 2024
DukeDukeDukeDukeDukeDuke
MaturityInterestDukeEnergyEnergyEnergyEnergyEnergyEnergy
Issuance DateDateRateEnergy(Parent)CarolinasProgressFloridaOhioIndianaPiedmont
Unsecured Debt
January 2024(a)
January 2027
4.850 %$600 $600 $— $— $— $— $— $— 
January 2024(a)
January 2029
4.850 %650 650 — — — — — — 
April 2024(e)
April 2031
5.648 %815 815 — — — — — — 
June 2024(d)
June 2034
5.450 %750 750 — — — — — — 
June 2024(d)
June 2054
5.800 %750 750 — — — — — — 
June 2024(h)
July 2031
5.900 %80 — — — — 80— — 
June 2024(h)
July 2034
6.000 %95 — — — — 95— — 
June 2024(h)
July 2039
6.170 %50 — — — — 50— — 
August 2024(d)
February 2035
5.100 %375 — — — — — — 375 
August 2024(i)
September 2054
6.450 %1,000 1,000 — — — — — — 
Secured Debt
April 2024(f)
March 2044
5.404 %177 — — 177 — — — — 
First Mortgage Bonds
January 2024(b)
January 2034
4.850 %575 — 575 — — — — — 
January 2024(b)
January 2054
5.400 %425 — 425 — — — — — 
March 2024(b)
March 2034
5.250 %300 — — — — — 300 — 
March 2024(c)
March 2034
5.100 %500 — — 500 — — — — 
March 2024(d)
March 2054
5.550 %425 — — — — 425 — — 
April 2024(g)
April 2074
3.981 %173 — — — 173 — — — 
Total issuances$7,740 $4,565 $1,000 $677 $173 $650 $300 $375 
(a)Proceeds were used to repay the remaining $1 billion outstanding on Duke Energy (Parent)'s variable rate Term Loan Facility due March 2024, pay down a portion of short-term debt and for general corporate purposes. Duke Energy (Parent)'s Term Loan Facility was terminated in March 2024 in conjunction with the payoff of remaining borrowings.
(b)Proceeds were used to pay down a portion of short-term debt and for general company purposes.
(c)Proceeds were used to fund eligible green energy projects, pay down a portion of short-term debt and for general company purposes.
(d)Proceeds were used to pay down a portion of short-term debt and for general corporate purposes.
(e)In April 2024, Duke Energy issued 750 million euros aggregate principal amount of 3.75% senior notes due April 2031. Duke Energy's obligations under its euro-denominated fixed-rate notes were effectively converted to fixed-rate U.S. dollars at issuance through cross-currency swaps, mitigating foreign currency exchange risk associated with the interest and principal payments. The $815 million equivalent in U.S. dollars were used to repay a portion of a $1 billion debt maturity due April 2024, pay down short-term debt and for general corporate purposes. See Note 15 for additional information.
(f)Proceeds were used to finance the South Carolina portion of restoration expenditures related to the following storms: Pax, Ulysses, Matthew, Florence, Michael, Dorian, Izzy and Jasper. See Notes 4 and 18 for more information.
(g)Debt has a floating interest rate. Proceeds were used to pay down a portion of the DEFR accounts receivable securitization facility due in April 2024, and for general company purposes. See Note 18 for more information.
(h)Debt issued by Duke Energy Kentucky with proceeds used to pay down a portion of short-term debt and for general corporate purposes.
(i)Duke Energy issued $1 billion of fixed-to-fixed reset rate junior subordinated debentures (the debentures) with proceeds used to redeem Duke Energy’s outstanding Series B Preferred Stock and for general corporate purposes. The debentures will bear interest at 6.45% until September 1, 2034, and thereafter the interest rate will reset every five years to the five-year U.S. Treasury rate plus a spread of 2.588%. The debentures have early redemption options and are callable on or after June 2034 for 100% of the principal plus accrued interest. See Note 20 for additional information.
Duke Energy (Parent) Convertible Senior Notes
In April 2023, Duke Energy (Parent) completed the sale of $1.7 billion 4.125% Convertible Senior Notes due April 2026 (convertible notes). The convertible notes are senior unsecured obligations of Duke Energy, and will mature on April 15, 2026, unless earlier converted or repurchased in accordance with their terms. The convertible notes bear interest at a fixed rate of 4.125% per year, payable semiannually in arrears on April 15 and October 15 of each year, beginning on October 15, 2023. Proceeds were used to repay a portion of outstanding commercial paper and for general corporate purposes.
On January 15, 2026, Duke Energy made an election that upon conversion of the convertible notes the company will pay cash equal to the principal amount of the notes and deliver shares of common stock for any conversion value in excess of the principal amount. The delivery of common stock will be based upon a daily conversion value calculated on a proportionate basis for each trading day in the applicable 25 trading day observation period.
On or after January 15, 2026, until the close of business on the second scheduled trading day immediately preceding the maturity date, holders of the convertible notes may convert all or any portion of their convertible notes at their option at any time at the conversion rate then in effect. Duke Energy will settle conversions of the convertible notes by paying cash up to the aggregate principal amount of the convertible notes to be converted and delivering shares of Duke Energy's common stock, $0.001 par value per share in respect of the remainder, if any, of its conversion obligation in excess of the aggregate principal amount of the convertible notes being converted.
The conversion rate for the convertible notes is initially 8.4131 shares of Duke Energy's common stock per $1,000 principal amount of convertible notes. The initial conversion price of the convertible notes represents a premium of approximately 25% over the last reported sale price of Duke Energy’s common stock on the NYSE on April 3, 2023. The conversion rate and the corresponding conversion price will not be adjusted for any accrued and unpaid interest but will be subject to adjustment in some instances, such as stock splits or share combinations, certain distributions to common stockholders, or tender offers at off-market rates. The changes in the conversion rates are intended to make convertible note holders whole for changes in the fair value of Duke Energy common stock resulting from such events. Duke Energy may not redeem the convertible notes prior to the maturity date and payments due as a result of a conversion of a convertible note would not constitute an event of default under the Master Credit Facility.
Duke Energy issued the convertible notes pursuant to an indenture, dated as of April 6, 2023, by and between Duke Energy and The Bank of New York Mellon Trust Company, N.A., as trustee. The terms of the convertible notes include customary fundamental change provisions that require repayment of the notes with interest upon certain events, such as a stockholder approved plan of liquidation or if Duke Energy's common stock ceases to be listed on the NYSE.
AVAILABLE CREDIT FACILITIES
Master Credit Facility
In March 2025, Duke Energy extended the termination date of its existing Master Credit Facility to March 2030 and increased its capacity from $9 billion to $10 billion. The Duke Energy Registrants, excluding Progress Energy, have borrowing capacity under the Master Credit Facility up to a specified sublimit for each borrower. Duke Energy has the unilateral ability at any time to increase or decrease the borrowing sublimits of each borrower, subject to a maximum sublimit for each borrower. The amount available under the Master Credit Facility has been reduced to backstop issuances of commercial paper, certain letters of credit and variable-rate demand tax-exempt bonds that may be put to the Duke Energy Registrants at the option of the holder.
The table below includes borrowing sublimits and available capacity under these credit facilities.
 December 31, 2025
DukeDukeDukeDukeDukeDuke
DukeEnergyEnergyEnergyEnergyEnergyEnergy
(in millions) Energy(Parent)CarolinasProgressFloridaOhioIndianaPiedmont
Facility size(a)
$10,000 $3,425 $1,650 $1,675 $700 $700 $850 $1,000 
Reduction to backstop issuances
Commercial paper(b)
(2,144)(1,019)(300)(150)— (34)(260)(381)
Outstanding letters of credit (7)(2)(4)(1)— — — — 
Tax-exempt bonds (81)— — — — — (81)— 
Available capacity $7,768 $2,404 $1,346 $1,524 $700 $666 $509 $619 
(a)    Represents the sublimit of each borrower.
(b)    Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are classified as Long-Term Debt Payable to Affiliated Companies in the Consolidated Balance Sheets.
Term Loan Facilities
Duke Energy (Parent)
Duke Energy (Parent) entered into a Term Loan Credit Facility (facility) with commitments totaling $1.4 billion that matured in March 2024. In January 2024, Duke Energy (Parent) repaid the remaining $1 billion outstanding on the facility.
In March 2024, Duke Energy (Parent) entered into a 364-day term loan facility with commitments totaling $700 million. In April 2024, $500 million was drawn under the facility with borrowings used for general corporate purposes. During the second quarter of 2024, Duke Energy (Parent) terminated the facility and repaid the $500 million in outstanding borrowings.
In September 2025, Duke Energy (Parent) entered into a 364-day term loan facility with commitments totaling $2 billion. As of December 31, 2025, $2.0 billion was drawn under the term loan facility, which was classified as Current maturities of long-term debt on the Consolidated Balance Sheets. Borrowings were used to pay down short-term debt and for general corporate purposes.
Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida
In November 2024, Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida entered into term loan facilities intended to meet incremental financing needs resulting from expenditures for the restoration of service and rebuilding of infrastructure related to hurricanes Debby, Helene and Milton as described in Note 4. Duke Energy Carolinas and Duke Energy Progress entered into two-year term loan facilities with commitments totaling $700 million and $250 million, respectively. Duke Energy Florida entered into a 364-day term loan facility with commitments totaling $800 million. As of December 31, 2024, $455 million and $185 million in borrowings under the term loan facilities for Duke Energy Carolinas and Duke Energy Progress, respectively, were classified as Long-Term Debt and $100 million in borrowings for Duke Energy Florida were classified as Current maturities of long-term debt on the Consolidated Balance Sheets.
In September 2025, Duke Energy Carolinas and Duke Energy Progress repaid their respective term loan facilities. In the third quarter of 2025, Duke Energy Florida repaid $450 million of borrowings on its outstanding term loan facility. The remaining $350 million was repaid in October 2025.
Piedmont
In August 2025, Piedmont entered into a 364-day term loan facility with commitments totaling $450 million. As of December 31, 2025, $450 million was drawn under the term loan facility, which was classified as Current maturities of long-term debt on the Consolidated Balance Sheets. Borrowings were used to repay $150 million of maturities due September 2025, to pay down short-term debt and for general corporate purposes.
Other Debt Matters
In September 2025, Duke Energy filed a Form S-3 with the SEC. Under this Form S-3, which is uncapped, the Duke Energy Registrants, excluding Progress Energy and Piedmont, may issue debt and other securities in the future at amounts, prices and with terms to be determined at the time of future offerings. The registration statement was filed to replace a similar prior filing upon expiration of its three-year term and also allows for the issuance of common and preferred stock by Duke Energy.
Also in September 2025, Duke Energy filed a Form S-3 with the SEC that allows Duke Energy to sell up to $4 billion of variable denomination floating-rate demand notes, called PremierNotes. The Form S-3 states that no more than $2 billion of the notes will be outstanding at any particular time. The notes are offered on a continuous basis and bear interest at a floating rate per annum determined by the Duke Energy PremierNotes Committee, or its designee, on a weekly basis. The interest rate payable on notes held by an investor may vary based on the principal amount of the investment. The notes have no stated maturity date, are non-transferable and may be redeemed in whole or in part by Duke Energy or at the investor’s option at any time. The balance as of December 31, 2025, and 2024, was $1,110 million and $1,070 million, respectively. The notes are short-term debt obligations of Duke Energy and are reflected as Notes payable and commercial paper on Duke Energy’s Consolidated Balance Sheets.
Money Pool and Intercompany Credit Agreements
The Subsidiary Registrants, excluding Progress Energy, are eligible to receive support for their short-term borrowing needs through participation with Duke Energy and certain of its subsidiaries in a money pool arrangement. Under this arrangement, those companies with short-term funds may provide short-term loans to affiliates participating in this arrangement. The money pool is structured such that the Subsidiary Registrants, excluding Progress Energy, separately manage their cash needs and working capital requirements. Accordingly, there is no net settlement of receivables and payables between money pool participants. Duke Energy (Parent) may loan funds to its participating subsidiaries, but may not borrow funds through the money pool. Accordingly, as the money pool activity is between Duke Energy and its subsidiaries, all money pool balances are eliminated within Duke Energy’s Consolidated Balance Sheets.
Money pool receivable balances are reflected within Notes receivable from affiliated companies on the Subsidiary Registrants’ Consolidated Balance Sheets. Money pool payable balances are reflected within either Notes payable to affiliated companies or Long-Term Debt Payable to Affiliated Companies on the Subsidiary Registrants’ Consolidated Balance Sheets.
Restrictive Debt Covenants
The Duke Energy Registrants’ debt and credit agreements contain various financial and other covenants. Duke Energy's Master Credit Facility contains a covenant requiring the debt-to-total capitalization ratio not to exceed 65% for each borrower, excluding Piedmont, and 70% for Piedmont. Failure to meet those covenants beyond applicable grace periods could result in accelerated due dates and/or termination of the agreements. As of December 31, 2025, each of the Duke Energy Registrants were in compliance with all covenants related to their debt agreements. In addition, some credit agreements may allow for acceleration of payments or termination of the agreements due to nonpayment, or acceleration of other significant indebtedness of the borrower or some of its subsidiaries. None of the debt or credit agreements contain material adverse change clauses.
Other Loans
As of December 31, 2025, and 2024, Duke Energy had loans outstanding of $935 million, including $31 million at Duke Energy Progress, and $903 million, including $32 million at Duke Energy Progress, respectively, against the cash surrender value of life insurance policies it owns on the lives of its executives. The amounts outstanding were carried as a reduction of the related cash surrender value that is included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets.
v3.25.4
Guarantees and Indemnifications
 12 Months Ended
Dec. 31, 2025
Guarantees [Abstract]  
Guarantees and Indemnifications GUARANTEES AND INDEMNIFICATIONS
Duke Energy has various financial and performance guarantees and indemnifications with non-consolidated entities, which are issued in the normal course of business. As discussed below, these contracts include performance guarantees, standby letters of credit, debt guarantees and indemnifications and include guarantees and indemnifications related to Commercial Renewables Disposal Groups as described in Note 2. Duke Energy enters into these arrangements to facilitate commercial transactions with third parties by enhancing the value of the transaction to the third party. At December 31, 2025, Duke Energy does not believe conditions are likely for significant performance under these guarantees. To the extent liabilities are incurred as a result of the activities covered by the guarantees, such liabilities are included on the accompanying Consolidated Balance Sheets.
On January 2, 2007, Duke Energy completed the spin-off of its previously wholly owned natural gas businesses to shareholders. Guarantees issued by Duke Energy or its affiliates, or assigned to Duke Energy prior to the spin-off, remained with Duke Energy subsequent to the spin-off. Guarantees issued by Spectra Energy Capital, LLC (Spectra Capital) or its affiliates prior to the spin-off remained with Spectra Capital subsequent to the spin-off, except for guarantees that were later assigned to Duke Energy. Duke Energy has indemnified Spectra Capital against any losses incurred under certain of the guarantee obligations that remain with Spectra Capital. At December 31, 2025, the maximum potential amount of future payments associated with these guarantees were $18 million, the majority of which expire by 2028.
In addition to the Spectra Capital guarantee above, Duke Energy has issued performance guarantees to customers and other third parties that guarantee the payment and performance of other parties, including certain non-wholly owned entities, as well as guarantees of debt of certain non-consolidated entities. If such entities were to default on payments or performance, Duke Energy would be required under the guarantees to make payments on the obligations of these entities. The maximum potential amount of future payments required under these guarantees that have capped maximums as of December 31, 2025, was $26 million of which all expire between 2026 and 2030. Additionally, certain guarantees that expire in 2026 have uncapped maximum potential payments; however, Duke Energy does not believe these guarantees will have a material effect on its results of operations, cash flows or financial position.
Duke Energy uses bank-issued standby letters of credit to secure the performance of wholly owned and non-wholly owned entities to a third party or customer. Under these arrangements, Duke Energy has payment obligations to the issuing bank that are triggered by a draw by the third party or customer due to the failure of the wholly owned or non-wholly owned entity to perform according to the terms of its underlying contract. At December 31, 2025, Duke Energy had issued a total of $335 million in letters of credit, which expire between 2026 and 2029. There are no unused amounts under these letters of credit.
Duke Energy recognized $1 million and $2 million as of December 31, 2025, and 2024, respectively, in Other within Other Noncurrent Liabilities on the Consolidated Balance Sheets, for the guarantees discussed above. As current estimates change, additional losses related to guarantees and indemnifications to third parties, which could be material, may be recorded by the Duke Energy Registrants in the future.
v3.25.4
Joint Ownership of Generating and Transmission Facilities
 12 Months Ended
Dec. 31, 2025
Joint Ownership Of Generating And Transmission Facilities [Abstract]  
Joint Ownership of Generating and Transmission Facilities JOINT OWNERSHIP OF GENERATING AND TRANSMISSION FACILITIES
The Duke Energy Registrants maintain ownership interests in certain jointly owned generating and transmission facilities and are entitled to a share of the generating capacity and output of each unit equal to their respective ownership interests. The Duke Energy Registrants pay their ownership share of additional construction costs, fuel inventory purchases and operating expenses. The Duke Energy Registrants' share of revenues and operating costs of the jointly owned facilities is included within the corresponding line in the Consolidated Statements of Operations. Each participant in the jointly owned facilities must provide its own financing.
The following table presents the Duke Energy Registrants' interest of jointly owned plant or facilities and amounts included on the Consolidated Balance Sheets. All facilities are operated by the Duke Energy Registrants and are included in the EU&I segment.
 December 31, 2025
Construction
OwnershipProperty, PlantAccumulatedWork in
(in millions except for ownership interest)Interestand EquipmentDepreciationProgress
Duke Energy Carolinas     
Catawba (units 1 and 2)(a)
19.25 %$1,067 $600 $28 
W.S. Lee CC(b)
87.27 %659 139 6 
Duke Energy Indiana     
Gibson (unit 5)(c)
50.05 %491 295 1 
Vermillion(d)
62.50 %182 127 1 
Transmission and local facilities(c)
Various8,543 1,805 357 
(a)    Jointly owned with North Carolina Municipal Power Agency Number 1, NCEMC and PMPA.
(b)    Jointly owned with NCEMC.
(c)    Jointly owned with WVPA and IMPA.
(d)    Jointly owned with WVPA.
v3.25.4
Asset Retirement Obligations
 12 Months Ended
Dec. 31, 2025
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations ASSET RETIREMENT OBLIGATIONS
Duke Energy records an ARO when it has a legal obligation to incur retirement costs associated with the retirement of a long-lived asset and the obligation can be reasonably estimated. Certain assets of the Duke Energy Registrants have an indeterminate life, such as transmission and distribution facilities, and thus the fair value of the retirement obligation is not reasonably estimable. A liability for these AROs will be recorded when a fair value is determinable.
The Duke Energy Registrants’ regulated operations accrue costs of removal for property that does not have an associated legal retirement obligation based on regulatory orders from state commissions. These costs of removal are recorded as a regulatory liability in accordance with regulatory accounting treatment. The amount spent may be higher than the amount accrued and result in a net asset. See Note 4 for the estimated cost of removal without an associated legal retirement obligation, which are included in Regulatory assets or Regulatory liabilities, as appropriate, on the Consolidated Balance Sheets.
The following table presents the AROs recorded on the Consolidated Balance Sheets.
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Decommissioning of nuclear power facilities
$4,668 $2,158 $2,497 $2,428 $69 $— $— $— 
Closure of ash impoundments4,607 1,610 1,838 1,814 24 64 1,095 — 
Other350 74 151 47 104 71 30 25 
Total asset retirement obligation$9,625 $3,842 $4,486 $4,289 $197 $135 $1,125 $25 
Less: Current portion579 245 196 194 2 6 133 — 
Total noncurrent asset retirement obligation$9,046 $3,597 $4,290 $4,095 $195 $129 $992 $25 
Nuclear Decommissioning Liability
AROs related to nuclear decommissioning are based on site-specific cost studies. The NCUC and the PSCSC require Duke Energy Carolinas and Duke Energy Progress to update cost estimates for decommissioning their nuclear plants every five years. The nuclear decommissioning liabilities are assessed and updated based on changes in cash flows provided in new studies as well as annual assessments to evaluate whether any indicators suggest a change in the estimate of the ARO is necessary.
The following table summarizes information about the most recent site-specific nuclear decommissioning cost studies. Decommissioning costs are stated in 2023 or 2024 dollars, depending on the year of the cost study, and include costs to decommission plant components not subject to radioactive contamination.
Decommissioning
(in millions)
Costs
Year of Cost Study
Duke Energy$8,972 2023 and 2024
Duke Energy Carolinas(a)
4,439 2023
Progress Energy
4,533 2024
Duke Energy Progress(b)
4,477 2024
Duke Energy Florida(c)
56 N/A
(a)    Decommissioning costs for Duke Energy Carolinas reflect its ownership interest in jointly owned reactors. Other joint owners are responsible for decommissioning costs related to their interest in the reactors. Duke Energy Carolinas' site-specific nuclear decommissioning cost study and a funding study were filed with the NCUC and PSCSC in 2024.
(b)    Duke Energy Progress' site-specific nuclear decommissioning cost study and a funding study were filed with the NCUC and PSCSC in 2025.
(c)    During 2019, Duke Energy Florida reached an agreement to transfer decommissioning work for Crystal River Unit 3 to a third party and decommissioning costs are based on the agreement with this third party rather than a cost study. Regulatory approval was received from the NRC and the FPSC in April 2020 and August 2020, respectively. Duke Energy Florida provides the FPSC periodic reports on the status and progress of decommissioning activities.
Nuclear Decommissioning Trust Funds
Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida each maintain NDTFs that are intended to pay for the decommissioning costs of their respective nuclear power plants. The NDTF investments are managed and invested in accordance with applicable requirements of various regulatory bodies including the NRC, FERC, NCUC, PSCSC, FPSC and the IRS.
Use of the NDTF investments is restricted to nuclear decommissioning activities including license termination, spent fuel and site restoration. The license termination and spent fuel obligations relate to contaminated decommissioning and are recorded as AROs. The site restoration obligation relates to non-contaminated decommissioning and is recorded to cost of removal within Regulatory liabilities on the Consolidated Balance Sheets.
The following table presents the fair value of NDTF assets legally restricted for purposes of settling AROs associated with nuclear decommissioning. Duke Energy Florida entered into an agreement with a third party to decommission Crystal River Unit 3 and was granted an exemption from the NRC, which allows for use of the NDTF for all aspects of nuclear decommissioning. The entire balance of Duke Energy Florida's NDTF may be applied toward license termination, spent fuel and site restoration costs incurred to decommission Crystal River Unit 3 and is excluded from the table below. See Note 17 for additional information related to the fair value of the Duke Energy Registrants' NDTFs.
December 31,
(in millions)20252024
Duke Energy$11,373 $10,044 
Duke Energy Carolinas6,453 5,687 
Progress Energy
4,920 4,357 
Duke Energy Progress4,920 4,357 
Nuclear Operating Licenses
As described in Note 4, Duke Energy Carolinas and Duke Energy Progress intend to seek renewal of operating licenses and 20-year license extensions for all of their nuclear stations. The following table includes the current expiration of nuclear operating licenses.
UnitYear of Expiration
Duke Energy Carolinas
Catawba Units 1 and 22043
McGuire Unit 12041
McGuire Unit 22043
Oconee Units 1 and 22053
Oconee Unit 32054
Duke Energy Progress
Brunswick Unit 12036
Brunswick Unit 22034
Harris2046
Robinson2030
The NRC has acknowledged permanent cessation of operation and permanent removal of fuel from the reactor vessel at Crystal River Unit 3. Therefore, the license no longer authorizes operation of the reactor. During 2019, Duke Energy Florida entered into an agreement for the accelerated decommissioning of Crystal River Unit 3. Regulatory approval was received from the NRC and the FPSC in April 2020 and August 2020, respectively.
Closure of Ash Impoundments
The Duke Energy Registrants are subject to state and federal regulations covering the closure of coal ash impoundments, including federal CCR rules and the Coal Ash Act, and other agreements. In April 2024, the EPA issued the 2024 CCR Rule, which significantly expanded the scope of the 2015 CCR Rule by establishing regulatory requirements for inactive surface impoundments at retired generating facilities and previously unregulated coal ash sources at regulated facilities. AROs recorded on the Duke Energy Registrants' Consolidated Balance Sheets include the legal obligation for closure of coal ash basins and the disposal of related ash as a result of these regulations and agreements.
The ARO amount recorded on the Consolidated Balance Sheets is based upon estimated closure costs for impacted ash impoundments. The amount recorded represents the discounted cash flows for estimated closure costs based upon specific closure plans. Actual costs to be incurred will be dependent upon factors that vary from site to site. The most significant factors are the method and time frame of closure at the individual sites. Closure methods considered include removing the water from ash basins, consolidating material as necessary and capping the ash with a synthetic barrier. The ultimate method and timetable for closure will be in compliance with standards set by federal and state regulations and other agreements. The ARO amount will be adjusted as additional information is gained through the closure and post-closure process, including acceptance and approval of compliance approaches, which may change management assumptions, and may result in a material change to the balance. See the ARO Liability Rollforward section below for information on revisions made to the coal ash liability during 2025 and 2024.
Asset retirement costs associated with the AROs for operating plants and retired plants are included in Net property, plant and equipment and Regulatory assets, respectively, on the Consolidated Balance Sheets. See Note 4 for additional information on Regulatory assets related to AROs and Note 5 for additional information on commitments and contingencies.
Cost recovery for future expenditures will be pursued through the normal ratemaking process with federal and state utility commissions, which permit recovery of reasonable and prudently incurred costs associated with Duke Energy’s regulated operations. See Note 4 for additional information on recovery of coal ash costs.
ARO Liability Rollforward
The following tables present changes in the liability associated with AROs.
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Balance at December 31, 2023$9,152 $4,013 $4,145 $3,870 $275 $136 $809 $21 
Accretion expense(a)
434 183 199 190 9 7 49 2 
Liabilities settled(b)
(634)(212)(321)(232)(89)(7)(94)— 
Liabilities incurred in the current year20 8 12 — 12 — — — 
Revisions in estimates of cash flows(c)
1,016 (2)513 506 7 3 504 1 
Balance at December 31, 20249,988 3,990 4,548 4,334 214 139 1,268 24 
Accretion expense(a)
474 188 219 211 8 7 65 1 
Liabilities settled(b)
(584)(227)(245)(203)(42)(6)(106)— 
Liabilities incurred in the current year18 1 17 5 12 — — — 
Revisions in estimates of cash flows(c)
(271)(110)(53)(58)5 (5)(102)— 
Balance at December 31, 2025$9,625 $3,842 $4,486 $4,289 $197 $135 $1,125 $25 
    
(a)    Substantially all accretion expense has been deferred in accordance with regulatory accounting treatment.
(b)    Amounts primarily relate to ash impoundment closures and nuclear decommissioning.
(c)    The amounts recorded represent the discounted cash flows for estimated closure costs as evaluated on a site-by-site basis. The increases in 2024 primarily relate to additional scope requirements to regulate the disposal of CCR in landfills and surface impoundments as a result of the 2024 CCR Rule, including an increase in groundwater monitoring wells. The decreases in 2025 primarily relate to lower third-party markup and a shift in timing of costs to future years.
v3.25.4
Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment PROPERTY, PLANT AND EQUIPMENT
The following tables summarize the property, plant and equipment for Duke Energy and its subsidiary registrants.
December 31, 2025
Average
RemainingDukeDukeDukeDukeDuke
Useful LifeDukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)(Years)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Land $2,667 $644 $1,226 $557 $669 $289 $157 $326 
Plant – Regulated
Electric generation, distribution and transmission 38145,947 52,259 66,751 37,561 29,190 7,945 18,992 — 
Natural gas transmission and distribution 5814,201 — — — — 4,529 — 9,672 
Other buildings and improvements 403,214 1,280 854 423 431 437 381 262 
Nuclear fuel 3,683 2,128 1,555 1,555 — — — — 
Equipment 114,193 1,132 1,456 852 604 555 540 131 
Construction in process 10,075 3,708 4,390 2,761 1,629 394 884 408 
Other116,429 1,362 2,115 1,466 637 478 287 526 
Total property, plant and equipment(a)
190,409 62,513 78,347 45,175 33,160 14,627 21,241 11,325 
Total accumulated depreciation – regulated(b)(c)
(59,441)(20,658)(25,425)(16,980)(8,437)(3,812)(7,492)(2,168)
Total accumulated depreciation – other(d)
(1,009)— — — — — — — 
Total net property, plant and equipment $129,959 $41,855 $52,922 $28,195 $24,723 $10,815 $13,749 $9,157 
(a)    Includes finance leases of $682 million, $349 million, $605 million, $478 million, $127 million and $13 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $208 million, $203 million and $5 million, respectively, of accumulated amortization of finance leases.
(b)    Includes $1,886 million, $1,064 million, $822 million and $822 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively.
(c)    Includes accumulated amortization of finance leases of $98 million and $5 million at Duke Energy Carolinas and Duke Energy Indiana, respectively.
(d)    Includes accumulated amortization of finance leases of $35 million at Duke Energy.
December 31, 2024
Average
RemainingDukeDukeDukeDukeDuke
Useful LifeDukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)(Years)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Land $2,503 $617 $1,134 $535 $599 $258 $144 $325 
Plant – Regulated
Electric generation, distribution and transmission 37137,836 49,547 62,351 35,633 26,718 7,634 18,304 — 
Natural gas transmission and distribution 5713,482 — — — — 4,255 — 9,227 
Other buildings and improvements 412,948 1,256 698 391 307 418 372 204 
Nuclear fuel 3,518 2,003 1,515 1,515 — — — — 
Equipment 133,850 997 1,252 753 499 542 490 157 
Construction in process 7,756 2,735 3,657 1,884 1,773 385 406 311 
Other106,844 1,227 1,953 1,349 594 426 254 488 
Total property, plant and equipment(a)
178,737 58,382 72,560 42,060 30,490 13,918 19,970 10,712 
Total accumulated depreciation – regulated(b)(c)
(55,143)(19,090)(23,586)(15,930)(7,650)(3,674)(6,848)(2,041)
Total accumulated depreciation – other(d)
(1,968)— — — — — — — 
Total net property, plant and equipment $121,626 $39,292 $48,974 $26,130 $22,840 $10,244 $13,122 $8,671 
(a)    Includes finance leases of $670 million, $336 million, $620 million, $512 million, $108 million, and $10 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy and Duke Energy Progress amounts are net of $159 million of accumulated amortization of finance leases.
(b)    Includes $1,824 million, $1,010 million, $814 million and $814 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively.
(c)    Includes accumulated amortization of finance leases of $84 million and $4 million at Duke Energy Carolinas and Duke Energy Indiana, respectively.
(d)    Includes accumulated amortization of finance leases of $25 million at Duke Energy.
The following table presents capitalized interest, which includes the debt component of AFUDC.
Years Ended December 31,
(in millions)202520242023
Duke Energy$182 $201 $201 
Duke Energy Carolinas66 61 62 
Progress Energy60 57 41 
Duke Energy Progress53 52 35 
Duke Energy Florida7 5 6 
Duke Energy Ohio10 14 16 
Duke Energy Indiana
2 13 21 
Piedmont7 8 8 
v3.25.4
Goodwill and Intangible Assets
 12 Months Ended
Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets GOODWILL AND INTANGIBLE ASSETS
GOODWILL
Duke Energy
Duke Energy's Goodwill balance of $19.0 billion is allocated $17.4 billion to EU&I and $1.6 billion to GU&I on Duke Energy's Consolidated Balance Sheets at December 31, 2025, and 2024. There are no accumulated impairment charges.
In July 2025, Piedmont entered into a purchase agreement for the sale of Piedmont's Tennessee business. In the third quarter of 2025, Duke Energy reclassified the Piedmont Tennessee Disposal Group to assets held for sale. As a result, $294 million of Duke Energy’s Goodwill balance that is allocated to the Piedmont Tennessee Disposal Group was reclassified to noncurrent assets held for sale on Duke Energy's Consolidated Balance Sheets. See Note 2 for additional information.
Duke Energy Ohio
Duke Energy Ohio's Goodwill balance of $920 million, allocated $596 million to EU&I and $324 million to GU&I, is presented net of accumulated impairment charges of $216 million on the Consolidated Balance Sheets at December 31, 2025, and 2024.
Progress Energy
Progress Energy's Goodwill is included in the EU&I segment and there are no accumulated impairment charges.
Piedmont
Piedmont's Goodwill is included in the GU&I segment and there are no accumulated impairment charges.
In July 2025, Piedmont entered into a purchase agreement for the sale of Piedmont's Tennessee business. In the third quarter of 2025, $10 million of Piedmont’s Goodwill balance that is allocated to the Piedmont Tennessee Disposal Group was reclassified to noncurrent assets held for sale on Piedmont's Consolidated Balance Sheets. See Note 2 for additional information.
Goodwill Impairment Testing
Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont are required to perform an annual goodwill impairment test as of the same date each year and, accordingly, perform their annual impairment testing of goodwill as of August 31. Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont update their test between annual tests if events or circumstances occur that would more likely than not reduce the fair value of a reporting unit below its carrying value. As the fair value for Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont exceeded their respective carrying values at the date of the annual impairment analysis, no goodwill impairment charges were recorded in 2025.
INTANGIBLE ASSETS
The following tables show the carrying amount and accumulated amortization of intangible assets included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets of the Duke Energy Registrants at December 31, 2025, and 2024.
 December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Emission allowances $8 $— $5 $2 $3 $— $2 $— 
Renewable energy certificates 259 115 143 143 — 1 — — 
Other 47 — 5 1 4 — — 22 
Total gross carrying amounts 314 115 153 146 7 1 2 22 
Accumulated amortization – other (23)— (4)— (4)— — (12)
Total intangible assets, net $291 $115 $149 $146 $3 $1 $2 $10 
 December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Emission allowances $8 $— $5 $2 $3 $— $2 $— 
Renewable energy certificates 241 103 136 136 — 2 — — 
Other 47 — 5 1 4 — — 22 
Total gross carrying amounts 296 103 146 139 7 2 2 22 
Accumulated amortization – other (19)— (3)— (3)— — (9)
Total intangible assets, net $277 $103 $143 $139 $4 $2 $2 $13 
Amortization Expense
Amortization expense amounts for other intangible assets are immaterial for the years ended December 31, 2025, 2024 and 2023, and are expected to be immaterial for the next five years as of December 31, 2025.
v3.25.4
Investments in Unconsolidated Affiliates
 12 Months Ended
Dec. 31, 2025
Equity Method Investments and Joint Ventures [Abstract]  
Investments in Unconsolidated Affiliates INVESTMENTS IN UNCONSOLIDATED AFFILIATES
EQUITY METHOD INVESTMENTS
Investments in affiliates that are not controlled by Duke Energy, but over which it has significant influence, are accounted for using the equity method.
The following table presents Duke Energy’s investments in unconsolidated affiliates accounted for under the equity method, as well as the respective equity in earnings (losses), by segment, for periods presented in this filing.
 Years Ended December 31,
 202520242023
Equity in
Equity in
Equity in
(in millions)InvestmentsearningsInvestments
(losses) earnings
earnings
Electric Utilities and Infrastructure$— $— $28 $(11)$7 
Gas Utilities and Infrastructure177 15 186 (48)40 
Other153 36 139 50 66 
Total$330 $51 $353 $(9)$113 
During the years ended December 31, 2025, 2024 and 2023, Duke Energy received distributions from equity investments of $30 million, $66 million and $50 million, respectively, which are included in Other assets within Cash Flows from Operating Activities on the Consolidated Statements of Cash Flows. During the years ended December 31, 2025, 2024 and 2023, Duke Energy received distributions from equity investments of $22 million, $25 million and $16 million, respectively, which are included in Return of investment capital within Cash Flows from Investing Activities on the Consolidated Statements of Cash Flows.
During the years ended December 31, 2025, 2024 and 2023, Piedmont received distributions from equity investments of $5 million, $9 million and $9 million, respectively, which are included in Other assets within Cash Flows from Operating Activities. During the years ended December 31, 2025, 2024 and 2023, Piedmont received distributions from equity investments of $2 million, $2 million and $1 million, respectively, which are included within Cash Flows from Investing Activities on the Consolidated Statements of Cash Flows.
Significant investments in affiliates accounted for under the equity method are discussed below.
Electric Utilities and Infrastructure
In January 2025, Duke Energy entered into an agreement to sell its indirect 50% ownership interest in DATC Path 15 Transmission LLC. Duke Energy recorded a pretax charge of $15 million in Equity in earnings (losses) of unconsolidated affiliates on Duke Energy's Consolidated Statements of Operations for the year ended December 31, 2024. The sale closed in March 2025.
In November 2024, Duke Energy sold its 50% interest in Pioneer, which also builds, owns and operates electric transmission facilities in North America. Proceeds from the sale approximated the carrying value of the investment.
Gas Utilities and Infrastructure
Pipeline Investments
Piedmont owns a 21.49% investment in Cardinal, an intrastate pipeline located in North Carolina.
Duke Energy owns a 7.5% interest in Sabal Trail, a 517-mile interstate natural gas pipeline, which provides natural gas to Duke Energy Florida and Florida Power and Light.
Storage Facilities
Piedmont owns a 45% interest in Pine Needle, an interstate LNG storage facility located in North Carolina, and a 50% interest in Hardy Storage, an underground interstate natural gas storage facility located in West Virginia.
Renewable Natural Gas Investments
Duke Energy has investments in various renewable natural gas projects. These investments include an interest in SustainRNG, a developer of renewable natural gas projects, as well as multiple project companies developed by SustainRNG. In December 2024, Duke Energy recorded a pretax charge of $54 million within Equity in earnings (losses) of unconsolidated affiliates on the Consolidated Statements of Operations, fully impairing Duke Energy's investments in the project companies. Duke Energy's remaining interest in SustainRNG was sold in January 2026, and net proceeds from the disposition were not material.
Other
Duke Energy has a 17.5% indirect economic ownership interest and a 25% board representation and voting rights interest in NMC, which owns and operates a methanol and MTBE business in Jubail, Saudi Arabia.
v3.25.4
Related Party Transactions
 12 Months Ended
Dec. 31, 2025
Related Party Transactions [Abstract]  
Related Party Transactions RELATED PARTY TRANSACTIONS
The Subsidiary Registrants engage in related party transactions in accordance with the applicable state and federal commission regulations. Refer to the Consolidated Balance Sheets of the Subsidiary Registrants for balances due to or due from related parties. Transactions with related parties included in the Consolidated Statements of Operations and Comprehensive Income are presented in the following table.
 Years Ended December 31,
(in millions) 202520242023
Duke Energy Carolinas   
Corporate governance and shared service expenses(a)
$638 $812 $823 
Indemnification coverages(b)
54 44 34 
JDA revenue(c)
119 35 34 
JDA expense(c)
349 187 177 
Intercompany natural gas purchases(d)
6 12 11 
Progress Energy 
Corporate governance and shared service expenses(a)
$591 $709 $736 
Indemnification coverages(b)
63 57 47 
JDA revenue(c)
349 187 177 
JDA expense(c)
119 35 34 
Intercompany natural gas purchases(d)
76 75 75 
Duke Energy Progress 
Corporate governance and shared service expenses(a)
$342 $426 $434 
Indemnification coverages(b)
26 23 20 
JDA revenue(c)
349 187 177 
JDA expense(c)
119 35 34 
Intercompany natural gas purchases(d)
76 75 75 
Duke Energy Florida 
Corporate governance and shared service expenses(a)
$249 $283 $302 
Indemnification coverages(b)
37 34 27 
Duke Energy Ohio 
Corporate governance and shared service expenses(a)
$260 $304 $294 
Indemnification coverages(b)
6 6 5 
Duke Energy Indiana 
Corporate governance and shared service expenses(a)
$293 $355 $365 
Indemnification coverages(b)
9 10 8 
Piedmont
Corporate governance and shared service expenses(a)
$143 $166 $149 
Indemnification coverages(b)
5 4 4 
Intercompany natural gas sales(d)
82 87 86 
Natural gas storage and transportation costs(e)
22 23 24 
(a)The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are primarily recorded in Operation, maintenance and other on the Consolidated Statements of Operations and Comprehensive Income.
(b)The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Consolidated Statements of Operations and Comprehensive Income.
(c)Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power and expenses from the purchase of power pursuant to the JDA are recorded in Operating Revenues and Fuel used in electric generation and purchased power, respectively, on the Consolidated Statements of Operations and Comprehensive Income.
(d)Piedmont provides long-term natural gas delivery service to certain Duke Energy Carolinas and Duke Energy Progress natural gas-fired generation facilities. Piedmont records the sales in Operating Revenues, and Duke Energy Carolinas and Duke Energy Progress record the related purchases as a component of Fuel used in electric generation and purchased power on their respective Consolidated Statements of Operations and Comprehensive Income.
(e)Piedmont has related party transactions as a customer of its equity method investments in Pine Needle, Hardy Storage and Cardinal natural gas storage and transportation facilities. These expenses are included in Cost of natural gas on Piedmont's Consolidated Statements of Operations and Comprehensive Income.
In addition to the amounts presented above, the Subsidiary Registrants have other affiliate transactions, including rental of office space, participation in a money pool arrangement, other operational transactions and their proportionate share of certain charged expenses. See Note 7 for more information regarding money pool. These transactions of the Subsidiary Registrants are incurred in the ordinary course of business and are eliminated in consolidation.
As discussed in Note 18, certain trade receivables were previously sold by Duke Energy Ohio and Duke Energy Indiana to CRC, an affiliate formed by a subsidiary of Duke Energy. The proceeds obtained from the sales of receivables were largely cash but included a subordinated note from CRC for a portion of the purchase price. In March 2024, Duke Energy repaid all outstanding CRC borrowings and terminated the related CRC credit facility.
Intercompany Income Taxes
Duke Energy and the Subsidiary Registrants file a consolidated federal income tax return and other state and jurisdictional returns. The Subsidiary Registrants have a tax sharing agreement with Duke Energy for the allocation of consolidated tax liabilities and benefits. Income taxes recorded represent amounts the Subsidiary Registrants would incur as separate C-Corporations. The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.
DukeDukeDukeDukeDuke
EnergyProgressEnergyEnergyEnergyEnergy
(in millions)CarolinasEnergyProgressFloridaOhioIndianaPiedmont
December 31, 2025
Intercompany income tax payable$81 $72 $77 $12 $10 $39 $59 
December 31, 2024
Intercompany income tax receivable$— $— $— $154 $— $— $— 
Intercompany income tax payable419 169 315 — 43 110 43 
v3.25.4
Derivatives and Hedging
 12 Months Ended
Dec. 31, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Derivatives and Hedging DERIVATIVES AND HEDGING
The Duke Energy Registrants use commodity, interest rate and foreign currency contracts to manage commodity price risk, interest rate risk and foreign currency exchange rate risk. The primary use of commodity derivatives is to hedge the generation portfolio against changes in the prices of electricity and natural gas. Piedmont enters into natural gas supply contracts to provide diversification, reliability and natural gas cost benefits to its customers. Interest rate derivatives are used to manage interest rate risk associated with borrowings. Foreign currency derivatives are used to manage risk related to foreign currency exchange rates on certain issuances of debt.
All derivative instruments not identified as NPNS are recorded at fair value as assets or liabilities on the Consolidated Balance Sheets. Cash collateral related to derivative instruments executed under master netting arrangements is offset against the collateralized derivatives on the Consolidated Balance Sheets. The cash impacts of settled derivatives are recorded as operating activities on the Consolidated Statements of Cash Flows.
INTEREST RATE RISK
The Duke Energy Registrants are exposed to changes in interest rates as a result of their issuance or anticipated issuance of variable-rate and fixed-rate debt and commercial paper. Interest rate risk is managed by limiting variable-rate exposures to a percentage of total debt and by monitoring changes in interest rates. To manage risk associated with changes in interest rates, the Duke Energy Registrants may enter into interest rate swaps, U.S. Treasury lock agreements and other financial contracts. In anticipation of certain fixed-rate debt issuances, a series of forward-starting interest rate swaps or Treasury locks may be executed to lock in components of current market interest rates. These instruments are later terminated prior to or upon the issuance of the corresponding debt.
Cash Flow Hedges
For a derivative designated as hedging the exposure to variable cash flows of a future transaction, referred to as a cash flow hedge, the effective portion of the derivative's gain or loss is initially reported as a component of other comprehensive income and subsequently reclassified into earnings once the future transaction impacts earnings. Amounts for interest rate contracts are reclassified to earnings as interest expense over the term of the related debt. Gains and losses reclassified out of AOCI for the years ended December 31, 2025, 2024 and 2023, were not material. Duke Energy's interest rate derivatives designated as hedges include forward-starting interest rate swaps not accounted for under regulatory accounting.
Undesignated Contracts
Undesignated contracts primarily include contracts not designated as a hedge because they are accounted for under regulatory accounting or contracts that do not qualify for hedge accounting.
Duke Energy’s interest rate swaps for its regulated operations employ regulatory accounting. With regulatory accounting, the mark-to-market gains or losses on the swaps are deferred as regulatory liabilities or regulatory assets, respectively. Regulatory assets and liabilities are amortized consistent with the treatment of the related costs in the ratemaking process. The accrual of interest on the swaps is recorded as Interest Expense on the Duke Energy Registrant's Consolidated Statements of Operations and Comprehensive Income.
The following tables show notional amounts of outstanding derivatives related to interest rate risk.
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndianaOhio
Cash flow hedges$1,725 $— $— $— $— $— $— 
Undesignated contracts3,852 2,175 1,325 650 675 325 27 
Total notional amount$5,577 $2,175 $1,325 $650 $675 $325 $27 
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndianaOhio
Cash flow hedges$2,825 $— $— $— $— $— $— 
Undesignated contracts3,202 1,150 1,775 1,125 650 250 27 
Total notional amount$6,027 $1,150 $1,775 $1,125 $650 $250 $27 
COMMODITY PRICE RISK
The Duke Energy Registrants are exposed to the impact of changes in the prices of electricity purchased and sold in bulk power markets and natural gas purchases, including Piedmont's natural gas supply contracts. Exposure to commodity price risk is influenced by a number of factors including the term of contracts, the liquidity of markets and delivery locations. To manage risk associated with commodity prices, the Duke Energy Registrants may enter into long-term power purchase or sales contracts and long-term natural gas supply agreements.
Undesignated Contracts
For the Subsidiary Registrants, bulk power electricity and natural gas purchases flow through fuel adjustment clauses, formula-based contracts or other cost-sharing mechanisms. Differences between the costs included in rates and the incurred costs, including undesignated derivative contracts, are largely deferred as regulatory assets or regulatory liabilities. Piedmont policies allow for the use of financial instruments to hedge commodity price risks. The strategy and objective of these hedging programs are to use the financial instruments to reduce natural gas cost volatility for customers.
Volumes
The tables below include volumes of outstanding commodity derivatives. Amounts disclosed represent the absolute value of notional volumes of commodity contracts excluding NPNS. The Duke Energy Registrants have netted contractual amounts where offsetting purchase and sale contracts exist with identical delivery locations and times of delivery. Where all commodity positions are perfectly offset, no quantities are shown.
December 31, 2025
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
EnergyCarolinasEnergyProgressOhioIndianaPiedmont
Electricity (GWh)10,615 — — — 1,349 9,266 — 
Natural gas (millions of Dth)814 307 286 286 — 33 188 
December 31, 2024
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
EnergyCarolinasEnergyProgressOhioIndianaPiedmont
Electricity (GWh)12,229 — — — 1,287 10,942 — 
Natural gas (millions of Dth)779 276 246 246 — 32 225 
FOREIGN CURRENCY RISK
Duke Energy may enter into foreign currency derivatives to hedge exposure to changes in foreign currency exchange rates, such as that arising from the issuance of debt denominated in a currency other than U.S. dollars.
Fair Value Hedges
Derivatives related to existing fixed rate securities are accounted for as fair value hedges, where the derivatives’ fair value gains or losses and hedged items’ fair value gains or losses are both recorded directly to earnings on the same income statement line item, including foreign currency gains or losses arising from changes in the U.S. currency exchange rates. Duke Energy has elected to exclude the cross-currency basis spread from the assessment of effectiveness in the fair value hedges of its foreign currency risk and record any difference between the change in the fair value of the excluded components and the amounts recognized in earnings as a component of other comprehensive income or loss.
The following table shows Duke Energy's outstanding derivatives related to foreign currency risk.
Fair Value Gain (Loss)(a)
Receive
Hedge
(in millions)
Pay NotionalNotionalReceive
Maturity
Years Ended December 31,
(in millions)Pay Rate(in millions)Rate
Date
202520242023
Fair value hedges
$645 4.75 %600 euros3.10 %June 2028$84 $(41)$17 
537 5.31 %500 euros3.85 %June 203470 (34)15 
815 5.65 %750 
euros
3.75 %April 2031104 (38)— 
Total
$1,997 1,850 euros$258 $(113)$32 
(a)    Amounts are recorded in Other Income and expenses, net on the Consolidated Statement of Operations, which offsets an equal translation adjustment of the foreign denominated debt. See the Consolidated Statements of Comprehensive Income for amounts excluded from the assessment of effectiveness for which the difference between changes in fair value and periodic amortization is recorded.
LOCATION AND FAIR VALUE OF DERIVATIVE ASSETS AND LIABILITIES RECOGNIZED IN THE CONSOLIDATED BALANCE SHEETS
The following tables show the fair value and balance sheet location of derivative instruments. Although derivatives subject to master netting arrangements are netted on the Consolidated Balance Sheets, the fair values presented below are shown gross and cash collateral on the derivatives has not been netted against the fair values shown.
Derivative AssetsDecember 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$28 $9 $7 $7 $— $— $11 $— 
Noncurrent28 12 16 16 — — — — 
Total Derivative Assets – Commodity Contracts$56 $21 $23 $23 $— $— $11 $— 
Interest Rate Contracts
Designated as Hedging Instruments
Current$25 $— $— $— $— $— $— $— 
Noncurrent20 — — — — — — — 
Not Designated as Hedging Instruments
Current$63 $34 $29 $29 $1 $— $— $— 
Noncurrent62 46 15 — 14 — 1 — 
Total Derivative Assets – Interest Rate Contracts$170 $80 $44 $29 $15 $— $1 $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Noncurrent156 — — — — — — — 
Total Derivative Assets – Foreign Currency Contracts
$156 $— $— $— $— $— $— $— 
Total Derivative Assets$382 $101 $67 $52 $15 $— $12 $— 
Derivative LiabilitiesDecember 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$104 $53 $25 $25 $— $— $7 $19 
Noncurrent106 32 21 21 — — — 53 
Total Derivative Liabilities – Commodity Contracts$210 $85 $46 $46 $— $— $7 $72 
Interest Rate Contracts
Not Designated as Hedging Instruments
Current— 3 (4)(5)1 — 2 — 
Noncurrent7 — 6 6 — 1 — — 
Total Derivative Liabilities – Interest Rate Contracts$7 $3 $2 $1 $1 $1 $2 $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Current$27 $— $— $— $— $— $— $— 
Total Derivative Liabilities – Foreign Currency Contracts$27 $— $— $— $— $— $— $— 
Total Derivative Liabilities$244 $88 $48 $47 $1 $1 $9 $72 
Derivative AssetsDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$49 $20 $17 $17 $— $1 $8 $1 
Noncurrent60 29 32 32 — — — — 
Total Derivative Assets – Commodity Contracts$109 $49 $49 $49 $— $1 $8 $1 
Interest Rate Contracts
Designated as Hedging Instruments
Current$108 $— $— $— $— $— $— $— 
Noncurrent52 — — — — — — — 
Not Designated as Hedging Instruments
Current$110 $19 $55 $44 $11 $— $36 $— 
Noncurrent50 26 23 16 7 — — — 
Total Derivative Assets – Interest Rate Contracts$320 $45 $78 $60 $18 $— $36 $— 
Foreign Currency Contracts
 Designated as Hedging Instruments
Noncurrent
$5 $— $— $— $— $— $— $— 
Total Derivative Assets – Foreign Currency Contracts
$5 $— $— $— $— $— $— $— 
Total Derivative Assets$434 $94 $127 $109 $18 $1 $44 $1 
Derivative LiabilitiesDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Not Designated as Hedging Instruments
Current$108 $57 $32 $32 $— $— $3 $16 
Noncurrent134 31 24 24 — — — 78 
Total Derivative Liabilities – Commodity Contracts$242 $88 $56 $56 $— $— $3 $94 
Interest Rate Contracts
Not Designated as Hedging Instruments
Current2 — 2 1 1 — — — 
Noncurrent1 — — — — 1 — — 
Total Derivative Liabilities – Interest Rate Contracts$3 $— $2 $1 $1 $1 $— $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Current$35 $— $— $— $— $— $— $— 
Noncurrent39 — — — — — — — 
Total Derivative Liabilities – Foreign Currency Contracts$74 $— $— $— $— $— $— $— 
Total Derivative Liabilities$319 $88 $58 $57 $1 $1 $3 $94 
OFFSETTING ASSETS AND LIABILITIES
The following tables present the line items on the Consolidated Balance Sheets where derivatives are reported. Substantially all of Duke Energy's outstanding derivative contracts are subject to enforceable master netting arrangements. The amounts shown are calculated by counterparty. Accounts receivable or accounts payable may also be available to offset exposures in the event of bankruptcy. These amounts are not included in the tables below.
Derivative AssetsDecember 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$116 $43 $36 $36 $1 $— $11 $— 
Offset(16)(9)(7)(7)— — — — 
Net amounts presented in Current Assets: Other$100 $34 $29 $29 $1 $— $11 $— 
Noncurrent
Gross amounts recognized$266 $58 $31 $16 $14 $— $1 $— 
Offset(22)(11)(11)(11)— — — — 
Net amounts presented in Other Noncurrent Assets: Other$244 $47 $20 $5 $14 $— $1 $— 
Derivative LiabilitiesDecember 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$131 $56 $21 $20 $1 $— $9 $19 
Offset(16)(9)(7)(7)— — — — 
Cash collateral posted(8)(1)— — — — (7)— 
Net amounts presented in Current Liabilities: Other$107 $46 $14 $13 $1 $— $2 $19 
Noncurrent
Gross amounts recognized$113 $32 $27 $27 $— $1 $— $53 
Offset(22)(11)(11)(11)— — — — 
Cash collateral posted(1)(1)— — — — — — 
Net amounts presented in Other Noncurrent Liabilities: Other$90 $20 $16 $16 $— $1 $— $53 
Derivative AssetsDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$267 $39 $72 $61 $11 $1 $44 $1 
Offset(29)(15)(14)(14)— — — — 
Net amounts presented in Current Assets: Other$238 $24 $58 $47 $11 $1 $44 $1 
Noncurrent
Gross amounts recognized$167 $55 $55 $48 $7 $— $— $— 
Offset(37)(19)(17)(17)— — — — 
Net amounts presented in Other Noncurrent Assets: Other$130 $36 $38 $31 $7 $— $— $— 
Derivative LiabilitiesDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$145 $57 $34 $33 $1 $— $3 $16 
Offset(29)(15)(14)(14)— — — — 
Cash collateral posted(3)(2)— — — — (1)— 
Net amounts presented in Current Liabilities: Other$113 $40 $20 $19 $1 $— $2 $16 
Noncurrent
Gross amounts recognized$174 $31 $24 $24 $— $1 $— $78 
Offset(37)(19)(17)(17)— — — — 
Cash collateral posted(4)(4)— — — — — — 
Net amounts presented in Other Noncurrent Liabilities: Other$133 $8 $7 $7 $— $1 $— $78 
OBJECTIVE CREDIT CONTINGENT FEATURES
Certain derivative contracts contain objective credit contingent features. These features include the requirement to post cash collateral or letters of credit if specific events occur, such as a credit rating downgrade below investment grade. The following tables show information with respect to derivative contracts that are in a net liability position and contain objective credit risk-related payment provisions.
December 31, 2025
DukeDuke
DukeEnergyProgressEnergy
(in millions)EnergyCarolinasEnergyProgress
Aggregate fair value of derivatives in a net liability position$102 $59 $43 $43 
Fair value of collateral already posted2 2 — — 
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered100 57 43 43 
December 31, 2024
DukeDuke
DukeEnergyProgressEnergy
(in millions)EnergyCarolinasEnergyProgress
Aggregate fair value of derivatives in a net liability position$101 $52 $49 $49 
Fair value of collateral already posted6 6 — — 
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered95 46 49 49 
The Duke Energy Registrants have elected to offset cash collateral and fair values of derivatives. For amounts to be netted, the derivative and cash collateral must be executed with the same counterparty under the same master netting arrangement.
v3.25.4
Investments in Debt and Equity Securities
 12 Months Ended
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Investments in Debt and Equity Securities INVESTMENTS IN DEBT AND EQUITY SECURITIES
Duke Energy’s investments in debt and equity securities are primarily comprised of investments held in (i) the NDTF at Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, (ii) the grantor trusts at Duke Energy Florida and Duke Energy Indiana related to OPEB plans and (iii) Bison. The Duke Energy Registrants classify investments in debt securities as AFS and investments in equity securities as FV-NI.
For investments in debt securities classified as AFS, the unrealized gains and losses are included in other comprehensive income until realized, at which time they are reported through net income. For investments in equity securities classified as FV-NI, both realized and unrealized gains and losses are reported through net income. Substantially all of Duke Energy’s investments in debt and equity securities qualify for regulatory accounting, and accordingly, all associated realized and unrealized gains and losses on these investments are deferred as a regulatory asset or liability.
Duke Energy classifies the majority of investments in debt and equity securities as long term, unless otherwise noted.
Investment Trusts
The investments within the Investment Trusts are managed by independent investment managers with discretion to buy, sell and invest pursuant to the objectives and guidelines set forth by the investment manager agreements and trust agreements. The Duke Energy Registrants have limited oversight of the day-to-day management of these investments. As a result, the ability to hold investments in unrealized loss positions is outside the control of the Duke Energy Registrants. Accordingly, all unrealized losses associated with debt securities within the Investment Trusts are recognized immediately and deferred to regulatory accounts where appropriate.
Other AFS Securities
Unrealized gains and losses on all other AFS securities are included in other comprehensive income until realized, unless it is determined the carrying value of an investment has a credit loss. The Duke Energy Registrants analyze all investment holdings each reporting period to determine whether a decline in fair value is related to a credit loss. If a credit loss exists, the unrealized credit loss is included in earnings. There were no material credit losses as of December 31, 2025, and 2024.
Other Investments amounts are recorded in Other within Other Noncurrent Assets on the Consolidated Balance Sheets.
DUKE ENERGY
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
December 31, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedUnrealizedUnrealized
HoldingHoldingEstimatedHoldingHoldingEstimated
(in millions) GainsLossesFair ValueGainsLossesFair Value
NDTF       
Cash and cash equivalents $— $— $175 $— $— $139 
Equity securities 6,041 14 8,519 5,753 61 8,233 
Corporate debt securities 17 18 1,056 6 33 673 
Municipal bonds 4 13 366 2 14 342 
U.S. government bonds 31 39 2,487 3 84 1,806 
Other debt securities 3 5 284 1 8 239 
Total NDTF Investments$6,096 $89 $12,887 $5,765 $200 $11,432 
Other Investments       
Cash and cash equivalents $— $— $53 $— $— $47 
Equity securities 57 — 139 39 4 160 
Corporate debt securities — 2 75 — 5 79 
Municipal bonds — 1 67 — 1 83 
U.S. government bonds — 4 59 — 5 59 
Other debt securities — 2 45 — 4 45 
Total Other Investments$57 $9 $438 $39 $19 $473 
Total Investments $6,153 $98 $13,325 $5,804 $219 $11,905 
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2025, 2024 and 2023, were as follows.
Years Ended December 31,
(in millions)202520242023
FV-NI:
Realized gains$1,174 $600 $129 
Realized losses145 85 146 
AFS:
Realized gains67 28 44 
Realized losses77 67 140 
DUKE ENERGY CAROLINAS
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
 December 31, 2025 December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedUnrealizedUnrealized
HoldingHoldingEstimatedHoldingHoldingEstimated
(in millions) GainsLossesFair ValueGainsLossesFair Value
NDTF       
Cash and cash equivalents $— $— $92 $— $— $62 
Equity securities 3,533 10 4,896 3,386 33 4,751 
Corporate debt securities 9 15 662 2 27 401 
Municipal bonds — 5 42 — 4 36 
U.S. government bonds 16 26 1,403 — 50 991 
Other debt securities 3 5 242 1 8 223 
Total NDTF Investments$3,561 $61 $7,337 $3,389 $122 $6,464 
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2025, 2024 and 2023, were as follows.
Years Ended December 31,
(in millions)202520242023
FV-NI:
Realized gains$693 $298 $82 
Realized losses77 40 79 
AFS:
Realized gains51 14 22 
Realized losses57 40 65 
PROGRESS ENERGY
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
December 31, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedUnrealizedUnrealized
HoldingHoldingEstimatedHoldingHoldingEstimated
(in millions) GainsLossesFair ValueGainsLossesFair Value
NDTF       
Cash and cash equivalents $— $— $83 $— $— $77 
Equity securities 2,508 4 3,623 2,367 28 3,482 
Corporate debt securities 8 3 394 4 6 272 
Municipal bonds 4 8 324 2 10 306 
U.S. government bonds 15 13 1,084 3 34 815 
Other debt securities — — 42 — — 16 
Total NDTF Investments$2,535 $28 $5,550 $2,376 $78 $4,968 
Other Investments       
Cash and cash equivalents $— $— $34 $— $— $23 
Municipal bonds — — 24 — — 24 
Total Other Investments$— $— $58 $— $— $47 
Total Investments $2,535 $28 $5,608 $2,376 $78 $5,015 
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2025, 2024 and 2023, were as follows.
Years Ended December 31,
(in millions)202520242023
FV-NI:
Realized gains$481 $302 $47 
Realized losses68 45 67 
AFS:
Realized gains16 14 22 
Realized losses20 27 75 
DUKE ENERGY PROGRESS
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
 December 31, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedUnrealizedUnrealized
HoldingHoldingEstimatedHoldingHoldingEstimated
(in millions) GainsLossesFair ValueGainsLossesFair Value
NDTF       
Cash and cash equivalents $— $— $71 $— $— $54 
Equity securities 2,380 4 3,485 2,256 28 3,362 
Corporate debt securities 8 3 375 4 6 256 
Municipal bonds 4 8 324 2 10 306 
U.S. government bonds 14 10 958 3 26 645 
Other debt securities — — 41 — — 14 
Total NDTF Investments$2,406 $25 $5,254 $2,265 $70 $4,637 
Other Investments    
Cash and cash equivalents $— $— $24 $— $— $16 
Total Other Investments$— $— $24 $— $— $16 
Total Investments $2,406 $25 $5,278 $2,265 $70 $4,653 
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2025, 2024 and 2023, were as follows.
Years Ended December 31,
(in millions)202520242023
FV-NI:
Realized gains$478 $288 $44 
Realized losses67 44 66 
AFS:
Realized gains15 13 20 
Realized losses19 26 70 
DUKE ENERGY FLORIDA
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
 December 31, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedUnrealizedUnrealized
HoldingHoldingEstimatedHoldingHoldingEstimated
(in millions) GainsLossesFair ValueGainsLossesFair Value
NDTF        
Cash and cash equivalents $— $— $12 $— $— $23 
Equity securities 128 — 138 111 — 120 
Corporate debt securities — — 19 — — 16 
U.S. government bonds 1 3 126 — 8 170 
Other debt securities — — 1 — — 2 
Total NDTF Investments(a)
$129 $3 $296 $111 $8 $331 
Other Investments    
Cash and cash equivalents $— $— $5 $— $— $3 
Municipal bonds — — 24 — — 24 
Total Other Investments$— $— $29 $— $— $27 
Total Investments $129 $3 $325 $111 $8 $358 
(a)    During the years ended December 31, 2025, and 2024, Duke Energy Florida received reimbursements from the NDTF for costs related to ongoing decommissioning activity of Crystal River Unit 3.
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2025, 2024 and 2023, were immaterial.
DUKE ENERGY INDIANA
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt investments are classified as AFS.
 December 31, 2025December 31, 2024
GrossGrossGross
UnrealizedUnrealizedUnrealized
HoldingHoldingEstimatedHoldingEstimated
(in millions) GainsLossesFair ValueLossesFair Value
Investments      
Cash and cash equivalents$— $— $— $— $1 
Equity securities 6 — 53 4 89 
Corporate debt securities — — 1 — 6 
Municipal bonds — 1 25 1 43 
U.S. government bonds — — 3 — 7 
Total Investments $6 $1 $82 $5 $146 
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2025, 2024 and 2023, were immaterial.
DEBT SECURITY MATURITIES
The table below summarizes the maturity date for debt securities.
December 31, 2025
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndiana
Due in one year or less$108 $15 $92 $17 $75 $1 
Due after one through five years1,130 564 501 473 28 8 
Due after five through 10 years955 513 395 378 17 6 
Due after 10 years2,246 1,257 880 830 50 14 
Total$4,439 $2,349 $1,868 $1,698 $170 $29 
v3.25.4
Fair Value Measurements
 12 Months Ended
Dec. 31, 2025
Fair Value Disclosures [Abstract]  
Fair Value Measurements FAIR VALUE MEASUREMENTS
Fair value is the exchange price to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. The fair value definition focuses on an exit price versus the acquisition cost. Fair value measurements use market data or assumptions market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs may be readily observable, corroborated by market data, or generally unobservable. Valuation techniques maximize the use of observable inputs and minimize the use of unobservable inputs. A midmarket pricing convention (the midpoint price between bid and ask prices) is permitted for use as a practical expedient.
Fair value measurements are classified in three levels based on the fair value hierarchy as defined by GAAP. Certain investments are not categorized within the fair value hierarchy. These investments are measured at fair value using the net asset value per share practical expedient. The net asset value is derived based on the investment cost, less any impairment, plus or minus changes resulting from observable price changes for an identical or similar investment of the same issuer.
Fair value accounting guidance permits entities to elect to measure certain financial instruments that are not required to be accounted for at fair value, such as equity method investments or the Company’s own debt, at fair value. The Duke Energy Registrants have not elected to record any of these items at fair value.
Valuation methods of the primary fair value measurements disclosed below are as follows.
Investments in equity securities
The majority of investments in equity securities are valued using Level 1 measurements. Investments in equity securities are typically valued at the closing price in the principal active market as of the last business day of the quarter. Principal active markets for equity prices include published exchanges such as the NYSE and Nasdaq Stock Market. Foreign equity prices are translated from their trading currency using the currency exchange rate in effect at the close of the principal active market. There was no after-hours market activity that was required to be reflected in the reported fair value measurements.
Investments in debt securities
Most investments in debt securities are valued using Level 2 measurements because the valuations use interest rate curves and credit spreads applied to the terms of the debt instrument (maturity and coupon interest rate) and consider the counterparty credit rating. If the market for a particular fixed-income security is relatively inactive or illiquid, the measurement is Level 3.
Commodity derivatives
Commodity derivatives with clearinghouses are classified as Level 1. Commodity derivatives with observable forward curves are classified as Level 2. If forward price curves are not observable for the full term of the contract and the unobservable period had more than an insignificant impact on the valuation, the commodity derivative is classified as Level 3. In isolation, increases (decreases) in natural gas forward prices result in favorable (unfavorable) fair value adjustments for natural gas purchase contracts; and increases (decreases) in electricity forward prices result in unfavorable (favorable) fair value adjustments for electricity sales contracts. Duke Energy regularly evaluates and validates pricing inputs used to estimate the fair value of certain commodity contracts by a market participant price verification procedure. This procedure provides a comparison of internal forward commodity curves to market participant generated curves.
Interest rate derivatives
Most over-the-counter interest rate contract derivatives are valued using financial models that utilize observable inputs for similar instruments and are classified as Level 2. Inputs include forward interest rate curves, notional amounts, interest rates and credit quality of the counterparties.
Foreign currency derivatives
Most over-the-counter foreign currency derivatives are valued using financial models that utilize observable inputs for similar instruments and are classified as Level 2. Inputs include forward foreign currency rate curves, notional amounts, foreign currency rates and credit quality of the counterparties.
Other fair value considerations
See Note 2 for further information on the valuation of the Commercial Renewables Disposal Groups. See Note 12 for a discussion of the valuation of goodwill and intangible assets.
DUKE ENERGY
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. Derivative amounts in the tables below for all Duke Energy Registrants exclude cash collateral, which is disclosed in Note 15. See Note 16 for additional information related to investments by major security type for the Duke Energy Registrants.
 December 31, 2025
(in millions)Total Fair ValueLevel 1Level 2Level 3Not Categorized
NDTF cash and cash equivalents$175 $175 $— $— $— 
NDTF equity securities8,519 8,494 3 — 22 
NDTF debt securities4,193 1,480 2,713 — — 
Other equity securities139 139 — — — 
Other debt securities246 55 191 — — 
Other cash and cash equivalents53 53 — — — 
Derivative assets382 2 371 9 — 
Total assets13,707 10,398 3,278 9 22 
Derivative liabilities(244)(7)(237)— — 
Net assets
$13,463 $10,391 $3,041 $9 $22 
 December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Level 3Not Categorized
NDTF cash and cash equivalents$139 $139 $— $— $— 
NDTF equity securities8,233 8,203 2 — 28 
NDTF debt securities3,060 1,022 2,038 — — 
Other equity securities160 160 — — — 
Other debt securities266 52 214 — — 
Other cash and cash equivalents47 47 — — — 
Derivative assets434 2 423 9 — 
Total assets12,339 9,625 2,677 9 28 
Derivative liabilities(319)(3)(316)— — 
Net assets
$12,020 $9,622 $2,361 $9 $28 
The following table provides reconciliations of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.
Derivatives (net)
 Years Ended December 31,
(in millions) 20252024
Balance at beginning of period$9 $15 
Purchases, sales, issuances and settlements:
Purchases14 29 
Settlements(6)(46)
Net transfers Out of Level 3(7)— 
Total (losses) gains included on the Consolidated Balance Sheet(1)11 
Balance at end of period$9 $9 
DUKE ENERGY CAROLINAS
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets.
 December 31, 2025
(in millions)Total Fair ValueLevel 1Level 2Not Categorized
NDTF cash and cash equivalents$92 $92 $— $— 
NDTF equity securities4,896 4,871 3 22 
NDTF debt securities2,349 776 1,573 — 
Derivative assets101 — 101 — 
Total assets7,438 5,739 1,677 22 
Derivative liabilities(88)— (88)— 
Net assets$7,350 $5,739 $1,589 $22 
 December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Not Categorized
NDTF cash and cash equivalents$62 $62 $— $— 
NDTF equity securities4,751 4,721 2 28 
NDTF debt securities1,651 520 1,131 — 
Derivative assets94 — 94 — 
Total assets6,558 5,303 1,227 28 
Derivative liabilities(88)— (88)— 
Net assets$6,470 $5,303 $1,139 $28 
PROGRESS ENERGY
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets.
 December 31, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
NDTF cash and cash equivalents$83 $83 $— $77 $77 $— 
NDTF equity securities3,623 3,623 — 3,482 3,482 — 
NDTF debt securities1,844 704 1,140 1,409 502 907 
Other debt securities24 — 24 24 — 24 
Other cash and cash equivalents34 34 — 23 23 — 
Derivative assets67 — 67 127 — 127 
Total assets5,675 4,444 1,231 5,142 4,084 1,058 
Derivative liabilities(48)— (48)(58)— (58)
Net assets$5,627 $4,444 $1,183 $5,084 $4,084 $1,000 
DUKE ENERGY PROGRESS
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets.
 December 31, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
NDTF cash and cash equivalents$71 $71 $— $54 $54 $— 
NDTF equity securities3,485 3,485 — 3,362 3,362 — 
NDTF debt securities1,698 597 1,101 1,221 365 856 
Other cash and cash equivalents24 24 — 16 16 — 
Derivative assets52 — 52 109 — 109 
Total assets5,330 4,177 1,153 4,762 3,797 965 
Derivative liabilities(47)— (47)(57)— (57)
Net assets$5,283 $4,177 $1,106 $4,705 $3,797 $908 
DUKE ENERGY FLORIDA
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets.
 December 31, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
NDTF cash and cash equivalents$12 $12 $— $23 $23 $— 
NDTF equity securities138 138 — 120 120 — 
NDTF debt securities146 107 39 188 137 51 
Other debt securities24 — 24 24 — 24 
Other cash and cash equivalents5 5 — 3 3 — 
Derivative assets15 — 15 18 — 18 
Total assets340 262 78 376 283 93 
Derivative liabilities(1)— (1)(1)— (1)
Net assets$339 $262 $77 $375 $283 $92 
DUKE ENERGY OHIO
The recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets were not material at December 31, 2025, and 2024.
DUKE ENERGY INDIANA
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets.
 December 31, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Level 3Total Fair ValueLevel 1Level 2Level 3
Other equity securities$53 $53 $— $— $89 $89 $— $— 
Other debt securities29 — 29 — 56 — 56 — 
Other cash equivalents— — — — 1 1 — — 
Derivative assets12 2 1 9 44 — 36 8 
Total assets94 55 30 9 190 90 92 8 
Derivative liabilities(9)(7)(2)— (3)(3)— — 
Net assets$85 $48 $28 $9 $187 $87 $92 $8 
The following table provides a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.
 Derivatives (net)
 Years Ended December 31,
(in millions)20252024
Balance at beginning of period$8 $13 
Purchases, sales, issuances and settlements:
Purchases12 27 
Settlements(4)(42)
Net transfers In (Out) of Level 3 due to observability of inputs(7)— 
Total gains included on the Consolidated Balance Sheet
— 10 
Balance at end of period$9 $8 
PIEDMONT
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets.
 December 31, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
Derivative assets$— $— $— $1 $1 $— 
Derivative liabilities(72)— (72)(94)— (94)
Net (liabilities) assets$(72)$— $(72)$(93)$1 $(94)
QUANTITATIVE INFORMATION ABOUT UNOBSERVABLE INPUTS
The following tables include quantitative information about the Duke Energy Registrants' derivatives classified as Level 3.
December 31, 2025
Weighted
Fair ValueAverage
Investment Type(in millions)Valuation TechniqueUnobservable InputRangeRange
Duke Energy Indiana
FTRs9 RTO auction pricingFTR price – per MWh(1.00)–14.63 1.13 
Duke Energy
Total Level 3 derivatives$9 
December 31, 2024
Weighted
Fair ValueAverage
Investment Type(in millions)Valuation TechniqueUnobservable InputRangeRange
Duke Energy Ohio
FTRs$1 RTO auction pricingFTR price – per MWh$— –$1.13 $0.48 
Duke Energy Indiana
FTRs8 RTO auction pricingFTR price – per MWh(0.63)–9.24 0.94 
Duke Energy
Total Level 3 derivatives$9 
OTHER FAIR VALUE DISCLOSURES
The fair value and book value of long-term debt, including current maturities, is summarized in the following table. Estimates determined are not necessarily indicative of amounts that could have been settled in current markets. Fair value of long-term debt uses Level 2 measurements.
 December 31, 2025December 31, 2024
(in millions)Book ValueFair ValueBook ValueFair Value
Duke Energy(a)
$87,212 $79,863 $80,689 $73,440 
Duke Energy Carolinas18,777 16,764 17,490 15,975 
Progress Energy26,848 24,957 24,496 22,548 
Duke Energy Progress13,896 12,445 12,504 11,009 
Duke Energy Florida11,307 10,720 10,348 9,752 
Duke Energy Ohio4,420 4,151 4,165 3,871 
Duke Energy Indiana5,093 4,646 4,798 4,329 
Piedmont4,251 3,960 4,003 3,584 
(a)    Book value of long-term debt includes $921 million and $1.0 billion as of December 31, 2025, and December 31, 2024, of unamortized debt discount and premium, net in purchase accounting adjustments related to the mergers with Progress Energy and Piedmont that are excluded from fair value of long-term debt.
At both December 31, 2025, and December 31, 2024, fair value of cash and cash equivalents, accounts and notes receivable, accounts payable, notes payable and commercial paper, and nonrecourse notes payable of VIEs are not materially different from their carrying amounts because of the short-term nature of these instruments and/or because the stated rates approximate market rates.
v3.25.4
Variable Interest Entities
 12 Months Ended
Dec. 31, 2025
Variable Interest Entities [Abstract]  
Variable Interest Entities VARIABLE INTEREST ENTITIES
A VIE is an entity that is evaluated for consolidation using more than a simple analysis of voting control. The analysis to determine whether an entity is a VIE considers contracts with an entity, credit support for an entity, the adequacy of the equity investment of an entity and the relationship of voting power to the amount of equity invested in an entity. This analysis is performed either upon the creation of a legal entity or upon the occurrence of an event requiring reevaluation, such as a significant change in an entity’s assets or activities. A qualitative analysis of control determines the party that consolidates a VIE. This assessment is based on (i) what party has the power to direct the activities of the VIE that most significantly impact its economic performance and (ii) what party has rights to receive benefits or is obligated to absorb losses that could potentially be significant to the VIE. The analysis of the party that consolidates a VIE is a continual reassessment.
CONSOLIDATED VIEs
The obligations of the consolidated VIEs discussed in the following paragraphs are nonrecourse to the Duke Energy Registrants. The registrants have no requirement to provide liquidity to, purchase assets of or guarantee performance of these VIEs unless noted in the following paragraphs.
No financial support was provided to any of the consolidated VIEs during the years ended December 31, 2025, 2024 and 2023, or is expected to be provided in the future, that was not previously contractually required.
Receivables Financing – DERF/DEPR/DEFR
DERF, DEPR and DEFR were bankruptcy remote, special purpose subsidiaries of Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, respectively. DERF, DEPR and DEFR were wholly owned LLCs with separate legal existence from their parent companies, and their assets were not generally available to creditors of their parent companies. On a revolving basis, DERF, DEPR and DEFR bought certain accounts receivable arising from the sale of electricity and related services from their parent companies.
DERF, DEPR and DEFR borrowed amounts under credit facilities to buy these receivables. Borrowing availability from the credit facilities was limited to the amount of qualified receivables purchased, which generally excluded receivables past due more than a predetermined number of days and reserved for expected past-due balances. The sole source of funds to satisfy the related debt obligations were cash collections from the receivables. Amounts borrowed under the DERF, DEPR, and DEFR credit facilities were reflected on the Consolidated Balance Sheets as Current maturities of long-term debt as of December 31, 2024.
The most significant activity that impacted the economic performance of DERF, DEPR and DEFR were the decisions made to manage delinquent receivables. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida were considered the primary beneficiaries and consolidated DERF, DEPR and DEFR, respectively, as they made those decisions.
In April 2024, Duke Energy Florida repaid all outstanding DEFR borrowings totaling $325 million and terminated the related DEFR credit facility. Additionally, Duke Energy Florida's related restricted receivables outstanding at DEFR at the time of termination totaled $459 million and were transferred back to Duke Energy Florida to be collected and reported as Receivables on the Consolidated Balance Sheets.
In January 2025, Duke Energy Carolinas repaid all outstanding DERF borrowings totaling $500 million and terminated the related DERF credit facility. Additionally, Duke Energy Carolinas' related restricted receivables outstanding at DERF at the time of termination totaled $1,081 million and were transferred back to Duke Energy Carolinas to be collected and reported as Receivables on the Consolidated Balance Sheets.
In March 2025, Duke Energy Progress repaid all outstanding DEPR borrowings totaling $400 million and terminated the related DEPR credit facility. Additionally, Duke Energy Progress' related restricted receivables outstanding at DEPR at the time of termination totaled $943 million and were transferred back to Duke Energy Progress to be collected and reporting as Receivables on the on the Consolidated Balance Sheets.
Receivables Financing – CRC
CRC was a bankruptcy remote, special purpose entity indirectly owned by Duke Energy. On a revolving basis, CRC bought certain accounts receivable arising from the sale of electricity, natural gas and related services from Duke Energy Ohio and Duke Energy Indiana. CRC then borrowed amounts under a credit facility to buy the receivables from Duke Energy Ohio and Duke Energy Indiana. Borrowing availability from the credit facility was limited to the amount of qualified receivables sold to CRC, which generally excluded receivables past due more than a predetermined number of days and reserved for expected past-due balances. The sole source of funds to satisfy the related debt obligation was cash collections from the receivables.
The proceeds Duke Energy Ohio and Duke Energy Indiana received from the sale of receivables to CRC were approximately 75% cash and 25% in the form of a subordinated note from CRC. The subordinated note was a retained interest in the receivables sold.
CRC was considered a VIE because (i) equity capitalization was insufficient to support its operations, (ii) power to direct the activities that most significantly impact the economic performance of the entity was not held by the equity holder and (iii) deficiencies in net worth of CRC were funded by Duke Energy. The most significant activities that impacted the economic performance of CRC were decisions made to manage delinquent receivables. Duke Energy was considered the primary beneficiary and consolidated CRC as it made these decisions. Neither Duke Energy Ohio nor Duke Energy Indiana consolidated CRC.
In March 2024, Duke Energy repaid all outstanding CRC borrowings totaling $350 million and terminated the related CRC credit facility. Additionally, Duke Energy's related restricted receivables outstanding at CRC at the time of termination totaled $682 million, consisting of $316 million and $366 million of restricted receivables that were transferred back to Duke Energy Indiana and Duke Energy Ohio, respectively, to be collected and reported as Receivables on the Consolidated Balance Sheets.
Receivables Financing – Credit Facilities
The following table summarizes the amounts and expiration dates of the credit facilities and associated restricted receivables reported on the Consolidated Balance Sheets.
Duke EnergyDuke Energy
CarolinasProgress
(in millions)DERFDEPR
Expiration date
(a)
(b)
Credit facility amount
(a)
(b)
Amounts borrowed at December 31, 2025— — 
Amounts borrowed at December 31, 2024500 400 
Restricted Receivables at December 31, 2025— — 
Restricted Receivables at December 31, 20241,054 835 
(a)    In January 2025, Duke Energy Carolinas repaid all outstanding DERF borrowing and terminated the related $500 million DERF credit facility.
(b)    In March 2025, Duke Energy repaid all the outstanding DEPR borrowing and terminated the related $400 million DEPR credit facility.
Nuclear Asset-Recovery Bonds – Duke Energy Florida Project Finance
Duke Energy Florida Project Finance, LLC (DEFPF) is a bankruptcy remote, wholly owned special purpose subsidiary of Duke Energy Florida. DEFPF was formed in 2016 for the sole purpose of issuing nuclear asset-recovery bonds to finance Duke Energy Florida's unrecovered regulatory asset related to Crystal River Unit 3.
In 2016, DEFPF issued senior secured bonds and used the proceeds to acquire nuclear asset-recovery property from Duke Energy Florida. The nuclear asset-recovery property acquired includes the right to impose, bill, collect and adjust a non-bypassable nuclear asset-recovery charge from all Duke Energy Florida retail customers until the bonds are paid in full and all financing costs have been recovered. The nuclear asset-recovery bonds are secured by the nuclear asset-recovery property and cash collections from the nuclear asset-recovery charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to Duke Energy Florida.
DEFPF is considered a VIE primarily because the equity capitalization is insufficient to support its operations. Duke Energy Florida has the power to direct the significant activities of the VIE as described above and therefore Duke Energy Florida is considered the primary beneficiary and consolidates DEFPF.
The following table summarizes the impact of DEFPF on Duke Energy Florida's Consolidated Balance Sheets.
December 31,
(in millions)20252024
Receivables of VIEs$3 $— 
Regulatory Assets: Current62 61 
Current Assets: Other34 35 
Other Noncurrent Assets: Regulatory assets682 741 
Other Noncurrent Assets: Other
7 7 
Current Liabilities: Other7 8 
Current maturities of long-term debt61 59 
Long-Term Debt712 773 
Storm Recovery Bonds
Duke Energy Carolinas NC Storm Funding, LLC (DECNCSF), Duke Energy Carolinas NC Storm Funding II, LLC (DECNCSFII), Duke Energy Carolinas SC Storm Funding, LLC (DECSCSF), Duke Energy Progress NC Storm Funding, LLC (DEPNCSF), Duke Energy Progress NC Storm Funding II, LLC (DEPNCSFII) and Duke Energy Progress SC Storm Funding, LLC (DEPSCSF) are bankruptcy remote, wholly owned special purpose subsidiaries of Duke Energy Carolinas and Duke Energy Progress. DECNCSF and DEPNCSF were formed in 2021, DEPSCSF was formed in 2024 and DECNCSFII, DECSCSF and DEPNCSFII were formed in 2025, all for the sole purpose of issuing storm recovery bonds to finance certain of Duke Energy Carolinas’ and Duke Energy Progress’ unrecovered regulatory assets related to storm costs incurred in North Carolina and South Carolina.
In 2021, DECNCSF and DEPNCSF issued senior secured bonds, and used the proceeds to acquire storm recovery property from Duke Energy Carolinas and Duke Energy Progress. The storm recovery property was created by state legislation and NCUC financing orders for the purpose of financing storm costs incurred in 2018 and 2019. In April 2024, DEPSCSF issued $177 million of senior secured bonds and used the proceeds to acquire storm recovery property from Duke Energy Progress. The storm recovery property was created by state legislation and a PSCSC financing order for the purpose of financing storm costs incurred from 2014 through 2022. In September 2025, DECNCSFII issued $582 million of senior secured bonds and DEPNCSFII issued $461 million of senior secured bonds. In November 2025, DECSCSF issued $561 million of senior secured bonds. Proceeds were used to recover previously incurred storm costs, repay the Duke Energy Carolinas and Duke Energy Progress term loan facilities and for general company purposes. See Note 7 for more information.
The storm recovery property acquired includes the right to impose, bill, collect and adjust a non-bypassable charge from all Duke Energy Carolinas’ and Duke Energy Progress’ North Carolina and South Carolina retail customers until the bonds are paid in full and all financing costs have been recovered from each respective utility and jurisdiction. The storm recovery bonds are secured by the storm recovery property and cash collections from the storm recovery charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to Duke Energy Carolinas or Duke Energy Progress. These entities are considered VIEs primarily because their equity capitalization is insufficient to support their operations. Duke Energy Carolinas and Duke Energy Progress have the power to direct the significant activities of the VIEs as described above and therefore Duke Energy Carolinas and Duke Energy Progress are considered the primary beneficiaries. Duke Energy Carolinas consolidates DECNCSF, DECNCSFII and DECSCSF and Duke Energy Progress consolidates DEPNCSF, DEPNCSFII and DEPSCSF.
The following table summarizes the impact of these VIEs on Duke Energy Carolinas’ and Duke Energy Progress’ Consolidated Balance Sheets.
December 31, 2025
Duke Energy Carolinas
Duke Energy Progress
(in millions)
DECNCSF
DECNCSFII
DECSCSF
DEPNCSF
DEPNCSFII
DEPSCSF
Receivables of VIEs1 3 — 4 3 2 
Regulatory Assets: Current12 29 31 39 23 8 
Current Assets: Other9 3 — 30 3 5 
Other Noncurrent Assets: Regulatory assets179 550 528 583 435 151 
Other Noncurrent Assets: Other1 3 3 4 2 1 
Current maturities of long-term debt11 2 3 35 1 5 
Long-Term Debt188 575 553 611 455 158 
December 31, 2024
Duke Energy Carolinas
Duke Energy Progress
(in millions)
DECNCSF
DEPNCSF
DEPSCSF
Regulatory Assets: Current$12 $39 $8 
Current Assets: Other9 27 13 
Other Noncurrent Assets: Regulatory assets189 620 155 
Other Noncurrent Assets: Other1 4 1 
Current maturities of long-term debt10 34 9 
Current Liabilities: Other2 10 7 
Long-Term Debt198 646 163 
Procurement Company – Duke Energy Florida
Duke Energy Florida Purchasing Company, LLC (DEF ProCo) is a wholly owned special purpose subsidiary of Duke Energy Florida. DEF ProCo was formed in 2023 as the primary procurement agent for equipment, materials and supplies for Duke Energy Florida. DEF ProCo interacts with third-party suppliers on Duke Energy Florida’s behalf with credit and risk support provided by Duke Energy Florida. DEF ProCo is a qualified reseller under Florida tax law and conveys acquired assets to Duke Energy Florida through leases on each acquired asset.
This entity is considered a VIE primarily because the equity capitalization is insufficient to support their operations. Duke Energy Florida has the power to direct the significant activities of this VIE as described above and therefore Duke Energy Florida is considered the primary beneficiary and consolidates the procurement company.
The following table summarizes the impact of this VIE on Duke Energy Florida's Consolidated Balance Sheets.
December 31,
(in millions)
20252024
Inventory
$669 494
Accounts Payable
289208
NON-CONSOLIDATED VIEs
Natural Gas Investments
Duke Energy has investments in various joint ventures including pipeline and renewable natural gas projects. These entities are considered VIEs due to having insufficient equity to finance their own activities without subordinated financial support. Duke Energy does not have the power to direct the activities that most significantly impact the economic performance, the obligation to absorb losses or the right to receive benefits of these VIEs and therefore does not consolidate these entities.
Non-consolidated VIEs are immaterial on the Condensed Consolidated Balance Sheets and the Duke Energy Registrants are not aware of any situations where the maximum exposure to loss significantly exceeds the carrying values.
CRC
See discussion under Consolidated VIEs for additional information related to CRC.
The following table shows sales and cash flows related to receivables sold and reflects CRC activity prior to its termination in March 2024.
 Duke Energy OhioDuke Energy Indiana
 Years Ended December 31,Years Ended December 31,
(in millions)2024202320242023
Sales    
Receivables sold$474 $2,578 $473 $3,223 
Loss recognized on sale7 34 6 39 
Cash flows
Cash proceeds from receivables sold478 2,591 523 3,294 
Collection fees received— 1 — 2 
Return received on retained interests4 19 4 25 
Cash flows from sales of receivables are reflected within Cash Flows From Operating Activities and Cash Flows from Investing Activities on Duke Energy Ohio’s and Duke Energy Indiana’s Consolidated Statements of Cash Flows.
Collection fees received in connection with servicing transferred accounts receivable were included in Operation, maintenance and other on Duke Energy Ohio’s and Duke Energy Indiana’s Consolidated Statements of Operations and Comprehensive Income. The loss recognized on sales of receivables was calculated monthly by multiplying receivables sold during the month by the required discount. The required discount was derived monthly utilizing a three-year weighted average formula that considered charge-off history, late charge history and turnover history on the sold receivables, as well as a component for the time value of money. The discount rate, or component for the time value of money, was the prior month-end Daily Simple SOFR plus a fixed rate of 1%.
v3.25.4
Revenue
 12 Months Ended
Dec. 31, 2025
Revenue from Contract with Customer [Abstract]  
Revenue REVENUE
Duke Energy recognizes revenue consistent with amounts billed under tariff offerings or at contractually agreed upon rates based on actual physical delivery of electric or natural gas service, including estimated volumes delivered when billings have not yet occurred. As such, the majority of Duke Energy’s revenues have fixed pricing based on the contractual terms of the published tariffs. Absent decoupling mechanisms, the variability in expected cash flows of the majority of Duke Energy's revenue is attributable to the customer’s volumetric demand and ultimate quantities of energy or natural gas supplied and used during the billing period. The stand-alone selling price of related sales are designed to support recovery of prudently incurred costs and an appropriate return on invested assets and are primarily governed by published tariff rates or contractual agreements approved by relevant regulatory bodies. As described in Note 1, certain excise taxes and franchise fees levied by state or local governments are required to be paid even if not collected from the customer. These taxes are recognized on a gross basis as part of revenues. Duke Energy elects to account for all other taxes net of revenues.
Performance obligations are satisfied over time as energy or natural gas is delivered and consumed with billings generally occurring monthly and related payments due within 30 days, depending on regulatory requirements. In no event does the timing between payment and delivery of the goods and services exceed one year. Using this output method for revenue recognition provides a faithful depiction of the transfer of electric and natural gas service as customers obtain control of the commodity and benefit from its use at delivery. Additionally, Duke Energy has an enforceable right to consideration for energy or natural gas delivered at any discrete point in time and will recognize revenue at an amount that reflects the consideration to which Duke Energy is entitled for the energy or natural gas delivered.
As described above, the majority of Duke Energy’s tariff revenues are at will and, as such, related contracts with customers have an expected duration of one year or less and will not have future performance obligations for disclosure. Additionally, other long-term revenue streams, including wholesale contracts, generally provide services that are part of a single performance obligation, the delivery of electricity or natural gas. As such, other than material fixed consideration under long-term contracts, related disclosures for future performance obligations are also not applicable.
Duke Energy earns substantially all of its revenues through its reportable segments, EU&I and GU&I.
Electric Utilities and Infrastructure
EU&I earns the majority of its revenues through retail and wholesale electric service through the generation, transmission, distribution and sale of electricity. Duke Energy generally provides retail and wholesale electric service customers with their full electric load requirements or with supplemental load requirements when the customer has other sources of electricity.
Retail electric service is generally marketed throughout Duke Energy’s electric service territory through standard service offers. The standard service offers are through tariffs determined by regulators in Duke Energy's regulated service territory. Each tariff, which is assigned to customers based on customer class, has multiple components such as an energy charge, a demand charge, a basic facilities charge and applicable riders. Duke Energy considers each of these components to be aggregated into a single performance obligation for providing electric service, or in the case of distribution only customers in Duke Energy Ohio, for delivering electricity. Electricity is considered a single performance obligation satisfied over time consistent with the series guidance and is provided and consumed over the billing period, generally one month. Retail electric service is typically provided to at-will customers who can cancel service at any time, without a substantive penalty. Additionally, Duke Energy adheres to applicable regulatory requirements in each jurisdiction to ensure the collectability of amounts billed and appropriate mitigating procedures are followed when necessary. As such, revenue from contracts with customers for such contracts is equivalent to the electricity supplied and billed in that period (including unbilled estimates).
Wholesale electric service is generally provided under long-term contracts using cost-based pricing. FERC regulates costs that may be recovered from customers and the amount of return companies are permitted to earn. Wholesale contracts include both energy and demand charges. For full requirements contracts, Duke Energy considers both charges as a single performance obligation for providing integrated electric service. For contracts where energy and demand charges are considered separate performance obligations, energy and demand are each a distinct performance obligation under the series guidance and are satisfied as energy is delivered and stand-ready service is provided on a monthly basis. This service represents consumption over the billing period and revenue is recognized consistent with billings and unbilled estimates, which generally occur monthly. Contractual amounts owed are typically trued up annually based upon incurred costs in accordance with FERC published filings and the specific customer’s actual peak demand. Estimates of variable consideration related to potential additional billings or refunds owed are updated quarterly.
The majority of wholesale revenues are full requirements contracts where the customers purchase the substantial majority of their energy needs and do not have a fixed quantity of contractually required energy or capacity. As such, related forecasted revenues are considered optional purchases. Supplemental requirements contracts that include contracted blocks of energy and capacity at contractually fixed prices have the following estimated remaining performance obligations as of December 31, 2025:
Remaining Performance Obligations
(in millions)20262027202820292030ThereafterTotal
Duke Energy Carolinas$12 $12 $12 $— $— $— $36 
Progress Energy43 43 13 13 14 29 155 
Duke Energy Progress6 6 6 6 7 14 45 
Duke Energy Florida37 37 7 7 7 15 110 
Duke Energy Indiana17 15 5 — — — 37 
Revenues for block sales are recognized monthly as energy is delivered and stand-ready service is provided, consistent with invoiced amounts and unbilled estimates.
Gas Utilities and Infrastructure
GU&I earns its revenue through retail and wholesale natural gas service through the transportation, distribution and sale of natural gas. Duke Energy generally provides retail and wholesale natural gas service customers with all natural gas load requirements. Additionally, while natural gas can be stored, substantially all natural gas provided by Duke Energy is consumed by customers simultaneously with receipt of delivery.
Retail natural gas service is marketed throughout Duke Energy's natural gas service territory using published tariff rates. The tariff rates are established by regulators in Duke Energy's service territories. Each tariff, which is assigned to customers based on customer class, have multiple components, such as a commodity charge, demand charge, customer or monthly charge and transportation costs. Duke Energy considers each of these components to be aggregated into a single performance obligation for providing natural gas service. For contracts where Duke Energy provides all of the customer’s natural gas needs, the delivery of natural gas is considered a single performance obligation satisfied over time, and revenue is recognized monthly based on billings and unbilled estimates as service is provided and the commodity is consumed over the billing period. Additionally, natural gas service is typically at will and customers can cancel service at any time, without a substantive penalty. Duke Energy also adheres to applicable regulatory requirements to ensure the collectability of amounts billed and receivable and appropriate mitigating procedures are followed when necessary.
Certain long-term individually negotiated contracts exist to provide natural gas service. These contracts are regulated and approved by state commissions. The negotiated contracts may have multiple components, including a natural gas and a demand charge, similar to retail natural gas contracts. Duke Energy considers each of these components to be a single performance obligation for providing natural gas service. This service represents consumption over the billing period, generally one month.
Fixed capacity payments under long-term contracts for the GU&I segment include minimum margin contracts and supply arrangements with municipalities and power generation facilities. Revenues for related sales are recognized monthly as natural gas is delivered and stand-ready service is provided, consistent with invoiced amounts and unbilled estimates. Estimated remaining performance obligations as of December 31, 2025, are as follows:
Remaining Performance Obligations
(in millions)20262027202820292030ThereafterTotal
Piedmont$54 $48 $45 $44 $42 $109 $342 
Other
The remainder of Duke Energy’s operations is presented as Other, which does not include material revenues from contracts with customers.
Disaggregated Revenues
For the EU&I and GU&I segments, revenue by customer class is most meaningful to Duke Energy as each respective customer class collectively represents unique customer expectations of service, generally has different energy and demand requirements, and operates under tailored, regulatory approved pricing structures. Additionally, each customer class is impacted differently by weather and a variety of economic factors including the level of population growth, economic investment, employment levels, and regulatory activities in each of Duke Energy’s jurisdictions. As such, analyzing revenues disaggregated by customer class allows Duke Energy to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Disaggregated revenues are presented as follows:
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
Residential$13,756 $4,124 $7,067 $2,965 $4,102 $1,116 $1,450 $— 
Commercial
8,337 2,885 3,825 1,732 2,093 603 1,024 — 
Industrial3,423 1,422 1,065 750 315 142 794 — 
Wholesale2,402 621 1,475 1,353 122 92 218 — 
Other revenues945 449 870 512 358 68 25 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$28,863 $9,501 $14,302 $7,312 $6,990 $2,021 $3,511 $— 
Gas Utilities and Infrastructure
Residential$1,596 $— $— $— $— $496 $— $1,100 
Commercial808 — — — — 181 — 627 
Industrial190 — — — — 44 — 146 
Power Generation— — — — — — — 34 
Other revenues256 — — — — 25 — 255 
Total Gas Utilities and Infrastructure revenue from contracts with customers$2,850 $— $— $— $— $746 $— $2,162 
Other
Revenue from contracts with customers$28 $— $— $— $— $— $— $— 
Total revenue from contracts with customers$31,741 $9,501 $14,302 $7,312 $6,990 $2,767 $3,511 $2,162 
Other revenue sources(a)
$496 $212 $207 $74 $115 $30 $33 $75 
Total revenues$32,237 $9,713 $14,509 $7,386 $7,105 $2,797 $3,544 $2,237 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
Residential$12,901 $4,150 $6,592 $2,872 $3,720 $1,009 $1,149 $— 
Commercial
8,207 3,080 3,718 1,754 1,964 590 818 — 
Industrial3,427 1,488 1,066 742 324 149 724 — 
Wholesale2,205 547 1,414 1,268 146 51 194 — 
Other revenues1,029 350 674 343 331 89 107 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$27,769 $9,615 $13,464 $6,979 $6,485 $1,888 $2,992 $— 
Gas Utilities and Infrastructure
Residential$1,320 $— $— $— $— $427 $— $893 
Commercial639 — — — — 153 — 486 
Industrial158 — — — — 33 — 125 
Power Generation— — — — — — — 33 
Other revenues126 — — — — 26 — 100 
Total Gas Utilities and Infrastructure revenue from contracts with customers$2,243 $— $— $— $— $639 $— $1,637 
Other
Revenue from contracts with customers$38 $— $— $— $— $— $— $— 
Total revenue from contracts with customers$30,050 $9,615 $13,464 $6,979 $6,485 $2,527 $2,992 $1,637 
Other revenue sources(a)
$307 $103 $169 $38 $110 $18 $48 $92 
Total revenues$30,357 $9,718 $13,633 $7,017 $6,595 $2,545 $3,040 $1,729 
Year Ended December 31, 2023
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
Residential$12,098 $3,409 $6,510 $2,540 $3,970 $947 $1,233 $— 
Commercial
7,895 2,670 3,762 1,588 2,174 552 911 — 
Industrial3,416 1,334 1,105 733 372 191 786 — 
Wholesale2,175 492 1,388 1,240 148 46 248 — 
Other revenues962 318 590 325 265 93 157 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$26,546 $8,223 $13,355 $6,426 $6,929 $1,829 $3,335 $— 
Gas Utilities and Infrastructure
Residential$1,226 $— $— $— $— $435 $— $792 
Commercial605 — — — — 154 — 450 
Industrial141 — — — — 26 — 115 
Power Generation— — — — — — — 31 
Other revenues119 — — — — 24 — 95 
Total Gas Utilities and Infrastructure revenue from contracts with customers$2,091 $— $— $— $— $639 $— $1,483 
Other
Revenue from contracts with customers$37 $— $— $— $— $— $— $— 
Total revenue from contracts with customers$28,674 $8,223 $13,355 $6,426 $6,929 $2,468 $3,335 $1,483 
Other revenue sources(a)
$386 $65 $189 $62 $107 $39 $64 $145 
Total revenues$29,060 $8,288 $13,544 $6,488 $7,036 $2,507 $3,399 $1,628 
(a)    Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.
The following table presents the reserve for credit losses for trade and other receivables.
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Balance at December 31, 2022$213 $68 $81 $44 $36 $6 $4 $11 
Write-Offs(162)(71)(84)(41)(42)— — (8)
Credit Loss Expense99 35 48 12 37 3 1 5 
Other Adjustments52 24 29 29 — — — — 
Balance at December 31, 2023$202 $56 $74 $44 $31 $9 $5 $8 
Write-Offs(131)(55)(73)(45)(28)— — (3)
Credit Loss Expense97 39 51 25 26 3 2 2 
Other Adjustments39 29 21 20 — 31 8 — 
Balance at December 31, 2024$207 $69 $73 $44 $29 $43 $15 $7 
Write-Offs(164)(52)(62)(37)(25)(21)(13)(17)
Credit Loss Expense106 26 39 16 23 15 13 14 
Other Adjustments45 12 15 15 — 14 — 2 
Balance at December 31, 2025$194 $55 $65 $38 $27 $51 $15 $6 
Trade and other receivables are evaluated based on an estimate of the risk of loss over the life of the receivable and current and historical conditions using supportable assumptions. Management evaluates the risk of loss for trade and other receivables by comparing the historical write-off amounts to total revenue over a specified period. Historical loss rates are adjusted due to the impact of current conditions, as well as forecasted conditions over a reasonable time period. The calculated write-off rate can be applied to the receivable balance for which an established reserve does not already exist. Management reviews the assumptions and risk of loss periodically for trade and other receivables.
v3.25.4
Stockholders' Equity
 12 Months Ended
Dec. 31, 2025
Equity [Abstract]  
Stockholders' Equity STOCKHOLDERS' EQUITY
Basic EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the diluted weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other agreements to issue common stock, such as convertible debt or equity forward sale agreements, are exercised or settled. Duke Energy applies the if-converted method for calculating any potential dilutive effect of the conversion of the outstanding convertible notes on diluted EPS, if applicable. Duke Energy’s participating securities are RSUs that are entitled to dividends declared on Duke Energy common stock during the RSUs vesting periods. Dividends declared on preferred stock are recorded on the Consolidated Statements of Operations as a reduction of net income to arrive at net income available to Duke Energy common stockholders. Dividends accumulated on preferred stock are an adjustment to net income used in the calculation of basic and diluted EPS.
The following table presents Duke Energy’s basic and diluted EPS calculations, the weighted average number of common shares outstanding and common and preferred share dividends declared.
Years Ended December 31,
(in millions, except per share amounts)202520242023
Net Income available to Duke Energy common stockholders$4,912 $4,402 $2,735 
Less: Income (Loss) from discontinued operations attributable to Duke Energy common stockholders
1 7 (1,391)
Accumulated preferred stock dividends adjustment— 14 — 
Less: Impact of participating securities6 6 6 
Income from continuing operations available to Duke Energy common stockholders$4,905 $4,403 $4,120 
Income (Loss) from discontinued operations, net of tax
$1 $10 $(1,455)
Add: Loss (Income) attributable to NCI
— (3)64 
Income (Loss) from discontinued operations attributable to Duke Energy common stockholders
$1 $7 $(1,391)
Weighted average common shares outstanding – basic and diluted
777 772 771 
EPS from continuing operations available to Duke Energy common stockholders
Basic and Diluted(a)
$6.31 $5.70 $5.35 
Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders
   Basic and Diluted(a)
$— $0.01 $(1.81)
Potentially dilutive items excluded from the calculation(b)
2 2 2 
Dividends declared per common share$4.22 $4.14 $4.06 
Dividends declared on Series A preferred stock per depositary share(c)
$1.437 $1.437 $1.437 
Dividends declared on Series B preferred stock per share(d)
$— $48.750 $48.750 
(a)    For the year ended December 31, 2025, the convertible notes were included in the calculation of diluted EPS, but the impact was immaterial. For the years ended December 31, 2024, and 2023, the convertible notes were excluded from the calculations of diluted EPS because the effect was antidilutive.
(b)    Performance stock awards were not included in the dilutive securities calculation because the performance measures related to the awards had not been met.
(c)    5.75% Series A Cumulative Redeemable Perpetual Preferred Stock dividends are payable quarterly in arrears on the 16th day of March, June, September and December. The preferred stock has a $25 liquidation preference per depositary share.
(d)    4.875% Series B Fixed-Rate Reset Cumulative Redeemable Perpetual Preferred Stock dividends were payable semiannually in arrears on the 16th day of March and September. The preferred stock was redeemed on September 16, 2024.
Common Stock
In November 2022, Duke Energy filed a prospectus supplement and executed an Equity Distribution Agreement (EDA) under which it could sell up to $1.5 billion of its common stock through an ATM offering program, including an equity forward sales component. Under the terms of the EDA, Duke Energy could issue and sell shares of common stock through September 2025.
In December 2024, Duke Energy physically settled equity forwards under the prior ATM program by delivering approximately 2.9 million shares of common stock in exchange for net cash proceeds of $297 million. Additionally, in December 2024, a fifth and final tranche of ATM equity issuances delivered 671,216 shares of common stock in exchange for net cash proceeds of $74 million, resulting in a total of 3.6 million shares of common stock issued in exchange for total cash proceeds of $371 million for the year ended December 31, 2024.
The following table shows ATM equity issuances pursuant to forward contracts executed during February and March 2025.
Tranche
Shares Priced
Initial Forward Price
1
1,710,979$116.02 
2
1,262,618$117.94 
3
1,264,410$117.79 
Total
4,238,007

The equity forwards require Duke Energy to either physically settle the transactions by issuing shares in exchange for net proceeds at the then-applicable forward sale price specified by the agreements or net settle in whole or in part through the delivery or receipt of cash or shares. The settlement alternatives are at Duke Energy's election. No amounts have or will be recorded in Duke Energy's Consolidated Financial Statements with respect to the ATM offering until settlement of the equity forwards occurs, which is expected by December 31, 2026. The initial forward sale prices will be subject to adjustment on a daily basis based on a floating interest rate factor and will decrease by other fixed amounts specified in the relevant forward sale agreements. Until settlement of the equity forwards, earnings per share dilution resulting from the agreements, if any, will be determined under the treasury stock method.
Preferred Stock
On September 16, 2024, Duke Energy redeemed all 1 million outstanding shares of Series B Preferred Stock for a redemption price of $1,000 per share or $1 billion in total. Following the redemption, dividends ceased to accrue on the shares of Series B Preferred Stock, shares of the Series B Preferred Stock were no longer deemed outstanding and all rights of the holders of such shares of Series B Preferred Stock terminated. In conjunction with the redemption, Duke Energy recorded $16 million in preferred stock redemption costs, calculated as the difference of $11 million between the carrying value on the redemption date of the Series B Preferred Stock and the total amount of consideration paid to redeem, and including the recognition of an excise tax liability under the IRA of $5 million. The preferred stock redemption costs were recorded as a reduction to Retained earnings on Duke Energy Corporation's Consolidated Balance Sheets during the year ended December 31, 2024.
The Series A Preferred Stock has no maturity or mandatory redemption date, is not redeemable at the option of the holders and Duke Energy may call the preferred stock, in whole or in part, at any time at a redemption price of $25 per depositary share. Duke Energy is also required to redeem all accumulated and unpaid dividends if the call option is exercised.
Dividends issued on its Series A Preferred Stock are subject to approval by the Board of Directors. However, the deferral of dividend payments on the preferred stock prohibits the declaration of common stock dividends.
The Series A Preferred Stock rank, with respect to dividends and distributions upon liquidation or dissolution:
•senior to Common Stock and to each other class or series of capital stock established after the original issue date of the Series A Preferred Stock that is expressly made subordinated to the Series A Preferred Stock;
•on a parity with any class or series of capital stock established after the original issue date of the Series A Preferred Stock that is not expressly made senior or subordinated to the Series A Preferred Stock;
•junior to any class or series of capital stock established after the original issue date of the Series A Preferred Stock that is expressly made senior to the Series A Preferred Stock;
•junior to all existing and future indebtedness (including indebtedness outstanding under Duke Energy's credit facilities, unsecured senior notes, junior subordinated debentures and commercial paper) and other liabilities with respect to assets available to satisfy claims against Duke Energy; and
•structurally subordinated to existing and future indebtedness and other liabilities of Duke Energy's subsidiaries and future preferred stock of subsidiaries.
Holders of Series A Preferred Stock have no voting rights with respect to matters that generally require the approval of voting stockholders. The limited voting rights of holders of Series A Preferred Stock include the right to vote as a single class, respectively, on certain matters that may affect the preference or special rights of the preferred stock, except in the instance that Duke Energy elects to defer the payment of dividends for a total of six quarterly full dividend periods for Series A Preferred Stock. If dividends are deferred for a cumulative total of six quarterly full dividend periods for Series A Preferred Stock, whether or not for consecutive dividend periods, holders of the preferred stock have the right to elect two additional Board members to the Board of Directors.
v3.25.4
Severance
 12 Months Ended
Dec. 31, 2025
Restructuring and Related Activities [Abstract]  
Severance SEVERANCE
During 2023, as Duke Energy transitioned from the foundational work of energy transition strategy planning to the launch of the largest power generation build period in its history, the Company streamlined certain functions and changed how it was structured and staffed to ensure the resulting organization reflected best-in-class standards, was optimally aligned with its jurisdictions, and was best positioned to serve customers, stakeholders and investors. As a result, Duke Energy extended involuntary severance benefits to certain employees in specific areas as a part of its organizational optimization. For the year ended December 31, 2023, Duke Energy recorded severance charges of approximately $97 million within Operation, maintenance and other on the Consolidated Statements of Operations. These charges, along with amortization of severance-related regulatory deferrals and the reversal of certain prior period severance costs, resulted in a total severance charge of $102 million in 2023.
The following table presents the direct and allocated severance and related charges accrued by the Duke Energy Registrants within Operation, maintenance and other on the Consolidated Statements of Operations.
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Year Ended December 31, 2025(a)
$(8)$(2)$(5)$(2)$(3)$— $— $— 
Year Ended December 31, 2024(a)
(28)(11)(9)(5)(4)(2)(4)(2)
Year Ended December 31, 2023(b)
102 53 33 21 12 3 6 4 
(a)    Primarily related to adjustments associated with 2023 severance charges.
(b)    Primarily related to the severance for 682 employees.
The table below presents the severance liability for past and ongoing severance plans including the plans described above.
DukeDukeDuke
Duke
Duke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)Energy
Carolinas
EnergyProgressFloridaOhioIndianaPiedmont
Balance at December 31, 2023
$102 $35 $16 $8 $8 $1 $4 $2 
Provision/Adjustments(28)(6)(3)(1)(2)(1)(3)(1)
Cash Reductions(55)(21)(11)(6)(5)— (1)(1)
Balance at December 31, 2024$19 $8 $2 $1 $1 $— $— $— 
Provision/Adjustments(8)(3)(1)(1)— — — — 
Cash Reductions(11)(5)(1)— (1)— — — 
Balance at December 31, 2025$— $— $— $— $— $— $— $— 
v3.25.4
Stock-Based Compensation
 12 Months Ended
Dec. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Stock-Based Compensation STOCK-BASED COMPENSATION
The Duke Energy Corporation 2023 Long-Term Incentive Plan (the 2023 Plan) provides for the grant of stock-based compensation awards to employees and outside directors. The 2023 Plan superseded the Duke Energy Corporation 2015 Long-Term Incentive Plan (the 2015 Plan). No additional grants will be made from the 2015 Plan. The 2023 Plan reserves 15 million shares of common stock for issuance. Duke Energy has historically issued new shares upon exercising or vesting of share-based awards. However, Duke Energy may use a combination of new share issuances and open market repurchases for share-based awards that are exercised or vest in the future. Duke Energy has not determined with certainty the amount of such new share issuances or open market repurchases.
The following table summarizes the total expense recognized by the Duke Energy Registrants, net of tax, for stock-based compensation.
 Years Ended December 31,
(in millions)202520242023
Duke Energy$74 $70 $71 
Duke Energy Carolinas27 25 25 
Progress Energy29 28 28 
Duke Energy Progress18 17 17 
Duke Energy Florida11 11 11 
Duke Energy Ohio6 5 5 
Duke Energy Indiana8 7 7 
Piedmont4 4 4 
Duke Energy's pretax stock-based compensation costs, the tax benefit associated with stock-based compensation expense and stock-based compensation costs capitalized are included in the following table.
 Years Ended December 31,
(in millions)202520242023
RSU awards$58 $49 $54 
Performance awards44 47 43 
Pretax stock-based compensation cost$102 $96 $97 
Stock-based compensation costs capitalized7 6 6 
Stock-based compensation expense$95 $90 $91 
Tax benefit associated with stock-based compensation expense$21 $20 $20 
RESTRICTED STOCK UNIT AWARDS
RSU awards generally vest over periods from immediate to three years. Fair value amounts are based on the market price of Duke Energy's common stock on the grant date. The following table includes information related to RSU awards.
 Years Ended December 31,
 202520242023
Shares granted (in thousands) 564 598 670 
Fair value (in millions)$66 $59 $65 
The following table summarizes information about RSU awards outstanding.
Weighted Average
SharesGrant Date Fair Value
 (in thousands)(per share)
Outstanding at December 31, 2024
1,059 $98 
Granted564 117 
Vested(602)99 
Forfeited(59)109 
Outstanding at December 31, 2025
962 108 
RSU awards expected to vest897 108 
The total grant date fair value of shares vested during the years ended December 31, 2025, 2024 and 2023, was $59 million, $55 million and $52 million, respectively. At December 31, 2025, Duke Energy had $38 million of unrecognized compensation cost, which is expected to be recognized over a weighted average period of 23 months.
PERFORMANCE AWARDS
Stock-based performance awards generally vest after three years to the extent performance targets are met. The actual number of shares issued will range from zero to 200% of target shares, depending on the level of performance achieved.
Performance awards contain performance conditions and a market condition. The performance conditions are based on Duke Energy's cumulative adjusted EPS and total incident case rate (total incident case rate is one of our key employee safety metrics). The market condition is based on TSR of Duke Energy relative to a predefined peer group.
Relative TSR is valued using a path-dependent model that incorporates expected relative TSR into the fair value determination of Duke Energy’s performance-based share awards. The model uses three-year historical volatilities and correlations for all companies in the predefined peer group, including Duke Energy, to simulate Duke Energy’s relative TSR as of the end of the performance period. For each simulation, Duke Energy’s relative TSR associated with the simulated stock price at the end of the performance period plus expected dividends within the period results in a value per share for the award portfolio. The average of these simulations is the expected portfolio value per share. Actual life to date results of Duke Energy’s relative TSR for each grant are incorporated within the model. For performance awards granted in 2025, the model used a risk-free interest rate of 4.04%, which reflects the yield on three-year Treasury bonds as of the grant date, and an expected volatility of 18.8% based on Duke Energy's historical volatility over three years using daily stock prices.
The following table includes information related to stock-based performance awards.
 Years Ended December 31,
 202520242023
Shares granted assuming target performance (in thousands)338 440 422 
Fair value (in millions)$41 $42 $42 
The following table summarizes information about stock-based performance awards outstanding and assumes payout at the target level.
Weighted Average
SharesGrant Date Fair Value
 (in thousands)(per share)
Outstanding at December 31, 2024
1,187 $98 
Granted338 122 
Vested(382)99 
Forfeited(36)116 
Outstanding at December 31, 2025
1,107 104 
Stock-based performance awards expected to vest1,079 104 
The total grant date fair value of shares vested during the years ended December 31, 2025, 2024 and 2023, was $38 million, $30 million and $31 million, respectively. At December 31, 2025, Duke Energy had $26 million of unrecognized compensation cost, which is expected to be recognized over a weighted average period of 22 months.
v3.25.4
Employee Benefit Plans
 12 Months Ended
Dec. 31, 2025
Retirement Benefits [Abstract]  
Employee Benefit Plans EMPLOYEE BENEFIT PLANS
DEFINED BENEFIT RETIREMENT PLANS
Duke Energy and certain subsidiaries maintain, and the Subsidiary Registrants participate in, qualified, non-contributory defined benefit retirement plans, which consist of the Duke Energy Retirement Cash Balance Plan (RCBP) and the Duke Energy Legacy Pension Plan (DELPP). These plans cover most employees using a cash balance formula. Under a cash balance formula, a plan participant accumulates a retirement benefit consisting of pay credits based upon a percentage of current eligible earnings, age or age and years of service and interest credits. Certain employees are eligible for benefits that use a final average earnings formula. Under these final average earnings formulas, a plan participant accumulates a retirement benefit equal to the sum of percentages of their (i) highest three-, four- or five-year average earnings, (ii) highest three-, four- or five-year average earnings in excess of covered compensation per year of participation (maximum of 35 years) or (iii) highest three-year average earnings times years of participation in excess of 35 years. Duke Energy also maintains, and the Subsidiary Registrants participate in, non-qualified, non-contributory defined benefit retirement plans that cover certain executives. The qualified and non-qualified, non-contributory defined benefit plans are closed to new participants.
Duke Energy uses a December 31 measurement date for its defined benefit retirement plan assets and obligations. Actuarial gains experienced by the defined benefit retirement plans in remeasuring plan assets as of December 31, 2025, were attributable to actual investment performance that exceeded expected investment performance. Actuarial losses experienced by the defined benefit retirement plans in remeasuring plan obligations as of December 31, 2025, were primarily attributable to the decrease in the discount rate used to measure plan obligations. Actuarial gains experienced by the defined benefit retirement plans in remeasuring plan obligations as of December 31, 2024, were primarily attributable to the increase in the discount rate used to measure plan obligations. Actuarial losses experienced by the defined benefit retirement plans in remeasuring plan assets as of December 31, 2024, were primarily attributable to actual investment performance that was less than expected investment performance.
As a result of the application of settlement accounting due to total lump-sum benefit payments exceeding the settlement threshold (defined as the sum of service cost and interest cost on projected benefit obligation components of net periodic benefit costs) for one of its qualified pension plans, Duke Energy recognized settlement charges of $72 million, of which $60 million was recorded to Regulatory Assets within Other Noncurrent Assets on the Consolidated Balance Sheets and $12 million was recorded to Other income and expenses, net, within the Consolidated Statement of Operations as of, and for the year ended, December 31, 2024.
Settlement charges recognized by the Subsidiary Registrants as of December 31, 2024, which represent amounts allocated by Duke Energy for employees of the Subsidiary Registrants and allocated charges for their proportionate share of settlement charges for employees of Duke Energy's shared services affiliate, and recorded to Regulatory Assets within Other Noncurrent Assets on the Consolidated Balance Sheets were $31 million for Duke Energy Carolinas, $23 million for Progress Energy, $16 million for Duke Energy Progress, $7 million for Duke Energy Florida, $3 million for Duke Energy Indiana and $4 million for Piedmont. Settlement charges recognized by the Subsidiary Registrants as of December 31, 2024, recorded to Other income and expenses, net, within the 2024 Consolidated Statements of Operations were $3 million for Duke Energy Carolinas, $5 million for Progress Energy, $5 million for Duke Energy Progress, $2 million for Duke Energy Ohio and $1 million for Piedmont.
The settlement charges reflect the recognition of a pro-rata portion of previously unrecognized actuarial losses, equal to the percentage of reduction in the projected benefit obligation resulting from total lump-sum benefit payments. Settlement charges recognized as a regulatory asset within Other Noncurrent Assets on the Consolidated Balance Sheets are amortized over the average remaining service period for participants in the plan. Amortization of settlement charges is disclosed in the tables below as a component of net periodic pension costs.
Net periodic benefit costs disclosed in the tables below represent the cost of the respective benefit plan for the periods presented prior to capitalization of amounts reflected as Net property, plant and equipment, on the Consolidated Balance Sheets. Only the service cost component of net periodic benefit costs is eligible to be capitalized. The remaining non-capitalized portions of net periodic benefit costs are classified as either: (1) service cost, which is recorded in Operation, maintenance and other on the Consolidated Statements of Operations; or as (2) components of non-service cost, which is recorded in Other income and expenses, net on the Consolidated Statements of Operations. Amounts presented in the tables below for the Subsidiary Registrants represent the amounts of pension and other post-retirement benefit cost allocated by Duke Energy for employees of the Subsidiary Registrants. Additionally, the Consolidated Statements of Operations of the Subsidiary Registrants also include allocated net periodic benefit costs for their proportionate share of pension and post-retirement benefit cost for employees of Duke Energy’s shared services affiliate that provide support to the Subsidiary Registrants. However, in the tables below, these amounts are only presented within the Duke Energy column (except for amortization of settlement charges). These allocated amounts are included in the governance and shared service costs discussed in Note 14.
Duke Energy’s policy is to fund amounts on an actuarial basis to provide assets sufficient to meet benefit payments to be paid to plan participants. The following table includes information related to the Duke Energy Registrants’ contributions to its qualified defined benefit pension plans.
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Contributions Made:
2025$100 $27 $23 $14 $10 $6 $8 $3 
2024100 26 23 14 9 5 8 3 
2023100 26 22 13 9 5 8 3 
QUALIFIED PENSION PLANS
Components of Net Periodic Pension Costs
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$107 $36 $30 $18 $12 $3 $6 $4 
Interest cost on projected benefit obligation329 79 103 46 57 17 26 10 
Expected return on plan assets(597)(153)(220)(98)(120)(24)(40)(20)
Amortization of actuarial loss61 15 19 10 9 2 5 4 
Amortization of prior service credit(13)(1)— — — — (2)(7)
Amortization of settlement charges
25 12 7 5 2 — 2 4 
Net periodic pension costs(a)(b)
$(88)$(12)$(61)$(19)$(40)$(2)$(3)$(5)
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$114 $37 $32 $19 $13 $3 $6 $4 
Interest cost on projected benefit obligation325 78 103 47 56 17 26 9 
Expected return on plan assets(613)(161)(217)(99)(116)(25)(42)(20)
Amortization of actuarial loss36 8 10 6 5 1 4 3 
Amortization of prior service credit(13)(1)— — — — (2)(7)
Amortization of settlement charges(c)
32 12 10 9 2 2 2 5 
Net periodic pension costs(a)(b)
$(119)$(27)$(62)$(18)$(40)$(2)$(6)$(6)
Year Ended December 31, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$117 $38 $33 $19 $13 $3 $6 $4 
Interest cost on projected benefit obligation344 84 107 49 57 18 27 9 
Expected return on plan assets(588)(160)(198)(93)(104)(24)(40)(20)
Amortization of actuarial loss10 2 4 2 2 — 2 — 
Amortization of prior service credit(14)(1)— — — — (2)(7)
Amortization of settlement charges
19 9 5 3 1 — 1 4 
Net periodic pension costs(a)(b)
$(112)$(28)$(49)$(20)$(31)$(3)$(6)$(10)
(a)    Duke Energy amounts exclude $2 million, $2 million and $3 million for the years ended December 2025, 2024 and 2023, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.
(b)    Duke Energy Ohio amounts exclude $1 million, $1 million and $1 million for the years ended December 2025, 2024 and 2023, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.
(c)    Includes settlement charges not deferred as a regulatory asset.
Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Regulatory assets, net decrease
$(202)$(46)$(84)$(40)$(43)$(8)$(6)$(9)
Accumulated other comprehensive loss (income)
Deferred income tax benefit
$3 $— $— $— $— $— $— $— 
Amortization of prior year actuarial (losses) gains
(17)— (1)— — — — — 
Net amount recognized in accumulated other comprehensive income
$(14)$— $(1)$— $— $— $— $— 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Regulatory assets, net increase
$147 $39 $33 $1 $31 $11 $6 $16 
Accumulated other comprehensive loss (income)
Deferred income tax benefit
$3 $— $— $— $— $— $— $— 
Amortization of prior year service credit1 — — — — — — — 
Amortization of prior year actuarial losses(12)— 1 — — — (2)— 
Net amount recognized in accumulated other comprehensive income
$(8)$— $1 $— $— $— $(2)$— 
Reconciliation of Funded Status to Net Amount Recognized
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Change in Projected Benefit Obligation
Obligation at prior measurement date $5,980 $1,444 $1,875 $838 $1,027 $309 $471 $181 
Service cost100 34 28 17 11 2 5 3 
Interest cost329 79 103 46 57 17 26 10 
Actuarial loss (gain)
86 32 39 16 23 2 8 (2)
Benefits paid(624)(181)(186)(103)(81)(26)(50)(16)
Transfers— — — — — 1 14 — 
Obligation at measurement date$5,871 $1,408 $1,859 $814 $1,037 $305 $474 $176 
Accumulated Benefit Obligation at measurement date$5,839 $1,408 $1,846 $813 $1,023 $300 $469 $176 
Change in Fair Value of Plan Assets
Plan assets at prior measurement date$6,887 $1,781 $2,376 $1,069 $1,290 $309 $498 $214 
Employer contributions100 27 23 14 10 6 8 3 
Actual return on plan assets847 214 323 145 176 31 52 28 
Benefits paid(624)(181)(186)(103)(81)(26)(50)(16)
Transfers— — — — — 1 14 — 
Plan assets at measurement date$7,210 $1,841 $2,536 $1,125 $1,395 $321 $522 $229 
Funded status of plan$1,339 $433 $677 $311 $358 $16 $48 $53 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Change in Projected Benefit Obligation
Obligation at prior measurement date $6,299 $1,514 $1,990 $911 $1,069 $325 $496 $175 
Service cost107 36 30 18 12 3 6 4 
Interest cost325 78 103 47 56 17 26 9 
Actuarial (gain)/loss
(106)(13)(50)(27)(22)(3)(16)5 
Benefits paid(645)(177)(198)(111)(88)(33)(41)(12)
Transfers— 6 — — — — — — 
Obligation at measurement date$5,980 $1,444 $1,875 $838 $1,027 $309 $471 $181 
Accumulated Benefit Obligation at measurement date$5,948 $1,444 $1,861 $838 $1,013 $304 $466 $181 
Change in Fair Value of Plan Assets
Plan assets at prior measurement date$7,162 $1,853 $2,453 $1,120 $1,316 $326 $514 $213 
Employer contributions100 26 23 14 9 5 8 3 
Actual return on plan assets270 73 98 46 53 11 17 10 
Benefits paid(645)(177)(198)(111)(88)(33)(41)(12)
Transfers— 6 — — — — — — 
Plan assets at measurement date$6,887 $1,781 $2,376 $1,069 $1,290 $309 $498 $214 
Funded status of plan$907 $337 $501 $231 $263 $— $27 $33 
Amounts Recognized in the Consolidated Balance Sheets
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Prefunded pension(a)
$1,339 $433 $678 $312 $358 $89 $120 $53 
Noncurrent pension liability(b)
$— $— $1 $1 $— $73 $72 $— 
Net asset recognized
$1,339 $433 $677 $311 $358 $16 $48 $53 
Regulatory assets$1,966 $524 $627 $314 $313 $92 $176 $104 
Accumulated other comprehensive income (loss)
Deferred income tax benefit$(21)$— $(1)$— $— $— $— $— 
Net actuarial loss98 — 3 — — — — — 
Net amounts recognized in accumulated other comprehensive income
$77 $— $2 $— $— $— $— $— 
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Prefunded pension(a)
$907 $337 $501 $231 $263 $74 $101 $33 
Noncurrent pension liability(b)
$— $— $— $— $— $74 $74 $— 
Net asset recognized
$907 $337 $501 $231 $263 $— $27 $33 
Regulatory assets$2,168 $570 $711 $354 $356 $100 $182 $113 
Accumulated other comprehensive (income) loss
Deferred income tax benefit$(24)$— $(1)$— $— $— $— $— 
Net actuarial loss115 — 4 — — — — — 
Net amounts recognized in accumulated other comprehensive income
$91 $— $3 $— $— $— $— $— 
(a)    Included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets.
(b)    Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets.
Information for Plans with Accumulated Benefit Obligation in Excess of Plan Assets
December 31, 2025
DukeDuke
EnergyEnergy
(in millions)OhioIndiana
Projected benefit obligation$112 $216 
Accumulated benefit obligation107 211 
Fair value of plan assets39 145 
December 31, 2024
DukeDuke
EnergyEnergy
(in millions)OhioIndiana
Projected benefit obligation$106 $203 
Accumulated benefit obligation101 197 
Fair value of plan assets32 128 
Assumptions Used for Pension Benefits Accounting
The discount rate used to determine the current year pension obligation and following year’s pension expense is based on a bond selection-settlement portfolio approach. This approach develops a discount rate by selecting a portfolio of high-quality corporate bonds that generate sufficient cash flow to provide for projected benefit payments of the plan. The selected bond portfolio is derived from a universe of non-callable corporate bonds rated Aa quality or higher. After the bond portfolio is selected, a single interest rate is determined that equates the present value of the plan’s projected benefit payments discounted at this rate with the market value of the bonds selected.
The RCBP contains a mostly active participant population while the DELPP contains a mostly inactive participant population. The average remaining service period for RCBP participants is nine years and the average life expectancy of DELPP participants is 15 years. Unrecognized net actuarial gains/losses and prior service credit are amortized over 11 years for Duke Energy and Duke Energy Carolinas, 14 years for Duke Energy Ohio, 13 years for Duke Energy Indiana, and nine years for Progress Energy, Duke Energy Progress, Duke Energy Florida and Piedmont.
The following tables present the assumptions or range of assumptions used for pension benefit accounting.
December 31,
202520242023
Benefit Obligations
Discount rate5.50 %5.70 %5.40 %
Interest crediting rate4.84 %4.78 %4.15 %
Salary increase 3.50 %–4.00 %3.50 %–4.00 %3.50 %–4.00 %
Net Periodic Benefit Cost
Discount rate5.70 %5.00 %–5.40 %5.60 %
Interest crediting rate4.78 %4.15 %4.35 %
Salary increase3.50 %–4.00 %3.50 %–4.00 %3.50 %–4.00 %
Expected long-term rate of return on plan assets8.50 %–7.00 %8.50 %–7.00 %6.50 %–8.25 %
Expected Benefit Payments
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Years ending December 31,
2026$596 $157 $176 $89 $86 $30 $44 $19 
2027578 150 173 86 87 29 43 18 
2028565 145 169 81 87 29 43 17 
2029540 135 165 77 87 28 43 16 
2030514 126 159 73 86 28 42 16 
2031-2035
2,319 540 740 324 412 124 198 71 
NON-QUALIFIED PENSION PLANS
The accumulated benefit obligation, which equals the projected benefit obligation for non-qualified pension plans, was $187 million for Duke Energy, $7 million for Duke Energy Carolinas, $69 million for Progress Energy, $22 million for Duke Energy Progress, $25 million for Duke Energy Florida, $2 million for Duke Energy Ohio, $1 million for Duke Energy Indiana and $2 million for Piedmont as of December 31, 2025.
Employer contributions, which equal benefits paid for non-qualified pension plans, were $29 million for Duke Energy, $1 million for Duke Energy Carolinas, $7 million for Progress Energy, $2 million for Duke Energy Progress and $3 million for Duke Energy Florida for the year ended December 31, 2025. Employer contributions were not material for Duke Energy Ohio, Duke Energy Indiana or Piedmont for the year ended December 31, 2025.
Net periodic pension costs for non-qualified pension plans were not material for the years ended December 31, 2025, 2024 or 2023.
OTHER POST-RETIREMENT BENEFIT PLANS
Duke Energy provides, and the Subsidiary Registrants participate in, some health care and life insurance benefits for retired employees on a contributory and non-contributory basis. Employees are eligible for these benefits if they have satisfied the applicable eligibility requirements (e.g., age and service) at retirement, as defined in the plans. The health care benefits include medical, dental, vision and prescription drug coverage and are subject to certain limitations, such as deductibles and copayments.
Duke Energy did not make any prefunding contributions to its other post-retirement benefit plans during the years ended December 31, 2025, 2024 or 2023.
Components of Net Periodic Other Post-Retirement Benefit Costs
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$2 $— $— $— $— $— $— $— 
Interest cost on accumulated post-retirement benefit obligation18 3 8 5 3 1 1 1 
Expected return on plan assets(12)(8)— — — — — (2)
Amortization of actuarial (gain) loss
(3)(1)5 4 2 (1)(1)— 
Amortization of prior service credit(21)(4)(11)(6)(5)— (5)— 
Net periodic post-retirement benefit costs (a)(b) (c)
$(16)$(10)$2 $3 $— $— $(5)$(1)
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$2 $— $— $— $— $— $— $— 
Interest cost on accumulated post-retirement benefit obligation17 3 7 4 3 1 1 1 
Expected return on plan assets(11)(8)— — — — — (2)
Amortization of actuarial (gain) loss
(6)(2)8 6 2 (2)(4)— 
Amortization of prior service credit(21)(4)(11)(6)(5)— (5)— 
Net periodic post-retirement benefit costs(a)(b)
$(19)$(11)$4 $4 $— $(1)$(8)$(1)
Year Ended December 31, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$2 $1 $— $— $— $— $— $— 
Interest cost on accumulated post-retirement benefit obligation22 5 9 5 4 1 1 1 
Expected return on plan assets(11)(7)— — — — — (2)
Amortization of actuarial (gain) loss
(6)(3)8 5 2 (2)(3)— 
Amortization of prior service credit(23)(5)(11)(6)(5)— (5)— 
Net periodic post-retirement benefit costs(a)(b)
$(16)$(9)$6 $4 $1 $(1)$(7)$(1)
(a)    Duke Energy amounts exclude $3 million, $4 million and $4 million for the years ended December 2025, 2024 and 2023, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.
(b)    Duke Energy Ohio amounts exclude $1 million, $1 million and $1 million for the years ended December 2025, 2024 and 2023, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.
(c)    Duke Energy and Duke Energy Indiana amounts exclude $5 million for the year ended December 2025 of net periodic post-retirement benefit costs associated with a regulatory adjustment.
Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets and Liabilities
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Regulatory assets, net (decrease) increase
$(11)$(17)$7 $2 $5 $— $(3)$(1)
Regulatory liabilities, net (decrease) increase
$(30)$(17)$(1)$(1)$— $(1)$(9)$1 
Accumulated other comprehensive (income) loss
Amortization of prior year actuarial gain(1)— — — — — — — 
Net amount recognized in accumulated other comprehensive income
$(1)$— $— $— $— $— $— $— 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Regulatory assets, net (decrease) increase
$(42)$(62)$23 $17 $5 $(1)$(3)$— 
Regulatory liabilities, net (decrease) increase
$(76)$(71)$12 $12 $— $(3)$(12)$— 
Accumulated other comprehensive (income) loss
Amortization of prior year actuarial gain$1 $— $— $— $— $— $— $— 
Net amount recognized in accumulated other comprehensive income
$1 $— $— $— $— $— $— $— 
Reconciliation of Funded Status to Accrued Other Post-Retirement Benefit Costs
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Change in Benefit Obligation
Post-retirement benefit obligation at prior measurement date
$334 $63 $146 $87 $60 $18 $20 $15 
Service cost2 — — — — — — — 
Interest cost18 3 8 5 3 1 1 1 
Plan participants' contributions1 — — — — — — — 
Actuarial losses (gains)
1 (1)2 2 1 — 1 1 
Benefits paid(35)(8)(14)(8)(6)(2)(3)(2)
Post-retirement benefit obligation at measurement date
$321 $57 $142 $86 $58 $17 $19 $15 
Change in Fair Value of Plan Assets
Plan assets at prior measurement date$161 $107 $(1)$— $— $7 $— $29 
Actual return on plan assets18 10 — — — 1 — 4 
Benefits paid(35)(8)(14)(8)(6)(2)(3)(2)
Employer contributions26 3 13 8 6 2 3 1 
Plan participants' contributions1 — — — — — — — 
Plan assets at measurement date$171 $112 $(2)$— $— $8 $— $32 
Funded status of plan$(150)$55 $(144)$(86)$(58)$(9)$(19)$17 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Change in Benefit Obligation
Post-retirement benefit obligation at prior measurement date
$347 $69 $146 $84 $60 $19 $24 $15 
Service cost2 — — — — — — — 
Interest cost17 3 7 4 3 1 1 1 
Plan participants' contributions3 1 1 — — — — — 
Actuarial losses (gains)
2 (2)7 5 3 — (2)— 
Benefits paid(37)(8)(15)(6)(6)(2)(3)(1)
Post-retirement benefit obligation at measurement date
$334 $63 $146 $87 $60 $18 $20 $15 
Change in Fair Value of Plan Assets
Plan assets at prior measurement date$156 $102 $(1)$(1)$(1)$7 $3 $27 
Actual return on plan assets7 4 — — — — — 3 
Benefits paid(37)(8)(15)(6)(6)(2)(3)(1)
Tax Refund
5 4 — — — — — — 
Employer contributions27 4 14 7 7 2 — — 
Plan participants' contributions3 1 1 — — — — — 
Plan assets at measurement date$161 $107 $(1)$— $— $7 $— $29 
Funded status of plan$(173)$44 $(147)$(87)$(60)$(11)$(20)$14 
Amounts Recognized in the Consolidated Balance Sheets
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Prefunded post-retirement benefit(a)
$— $55 $— $— $— $1 $— $17 
Current post-retirement liability(b)
8 — 5 3 2 1 — — 
Noncurrent post-retirement liability(c)
142 — 139 83 56 9 19 — 
Net liability (asset) recognized$150 $(55)$144 $86 $58 $9 $19 $(17)
Regulatory assets$70 $— $69 $48 $21 $1 $17 $— 
Regulatory liabilities$124 $18 $11 $11 $— $13 $53 $1 
Accumulated other comprehensive (income) loss
Deferred income tax expense$3 $— $— $— $— $— $— $— 
Net actuarial gain(13)— (1)— — — — — 
Net amounts recognized in accumulated other comprehensive income
$(10)$— $(1)$— $— $— $— $— 
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Prefunded post-retirement benefit(a)
$— $44 $— $— $— $1 $— $14 
Current post-retirement liability(b)
8 — 5 3 2 1 — — 
Noncurrent post-retirement liability(c)
165 — 142 84 58 11 20 — 
Net liability (asset) recognized$173 $(44)$147 $87 $60 $11 $20 $(14)
Regulatory assets$81 $17 $62 $46 $16 $1 $20 $1 
Regulatory liabilities$154 $35 $12 $12 $— $14 $62 $— 
Accumulated other comprehensive (income) loss
Deferred income tax expense$3 $— $— $— $— $— $— $— 
Net actuarial gain(12)— (1)— — — — — 
Net amounts recognized in accumulated other comprehensive income
$(9)$— $(1)$— $— $— $— $— 
(a)    Included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets. 
(b)    Included in Other within Current Liabilities on the Consolidated Balance Sheets.
(c)    Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets.
Assumptions Used for Other Post-Retirement Benefits Accounting
The discount rate used to determine the current year other post-retirement benefits obligation and following year’s other post-retirement benefits expense is based on a bond selection-settlement portfolio approach. This approach develops a discount rate by selecting a portfolio of high-quality corporate bonds that generate sufficient cash flow to provide for projected benefit payments of the plan. The selected bond portfolio is derived from a universe of non-callable corporate bonds rated Aa quality or higher. After the bond portfolio is selected, a single interest rate is determined that equates the present value of the plan’s projected benefit payments discounted at this rate with the market value of the bonds selected.
The average remaining service period of active covered employees is seven years for Duke Energy, Duke Energy Carolinas and Duke Energy Florida, six years for Progress Energy, Duke Energy Ohio, Duke Energy Indiana and Piedmont and five years for Duke Energy Progress.
The following tables present the assumptions used for other post-retirement benefits accounting.
December 31,
202520242023
Benefit Obligations
Discount rate5.50 %5.70 %5.40 %
Net Periodic Benefit Cost
Discount rate5.70 %5.40 %5.60 %
Expected long-term rate of return on plan assets2.50 %–8.50 %2.75 %–8.50 %4.00 %–8.25 %
Assumed Health Care Cost Trend Rate
December 31,
20252024
Health care cost trend rate assumed for next year – pre-65 trend
8.00 %7.00 %
Health care cost trend rate assumed for next year – post-65 trend
8.00 %— %
Rate to which the cost trend is assumed to decline (the ultimate trend rate)5.00 %4.75 %
Year that rate reaches ultimate trend
2038
2034-2035
Expected Benefit Payments
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Years ending December 31,
2026$54 $13 $18 $11 $7 $3 $4 $2 
202744 10 16 10 7 3 3 2 
202838 8 15 9 6 2 2 2 
202934 7 14 8 6 2 2 2 
203031 6 14 8 5 2 2 2 
2031-2035
121 20 58 35 23 6 7 6 
PLAN ASSETS
Description and Allocations
Duke Energy Corporation Master Retirement Trust
Assets for both the qualified pension and other post-retirement benefits are maintained in the Duke Energy Corporation Master Retirement Trust. Approximately 98% of the Duke Energy Corporation Master Retirement Trust assets were allocated to qualified pension plans and approximately 2% were allocated to other post-retirement plans (comprised of 401(h) accounts), as of December 31, 2025, and 2024. The investment objective of the Duke Energy Corporation Master Retirement Trust is to invest in a diverse portfolio of assets that is expected to generate positive surplus return over time (i.e., asset growth greater than liability growth) subject to a prudent level of portfolio risk, for the purpose of enhancing the security of benefits for plan participants.
As of December 31, 2025, Duke Energy assumes qualified pension and other post-retirement plan assets will generate a long-term rate of return of 8.50% for the RCBP pension and RCBP 401(h) account assets and 7.00% for the DELPP pension and DELPP 401(h) account assets. The expected long-term rate of return was developed using a weighted average calculation of expected returns based primarily on future expected returns across asset classes considering the use of active asset managers, where applicable. The asset allocation targets were set after considering the investment objective and the risk profile. Equity securities are held for their higher expected returns. Debt securities are primarily held to hedge the qualified pension plan. Return seeking debt securities, hedge funds and other global securities are held for diversification. Investments within asset classes are diversified to achieve broad market participation and reduce the impact of individual managers or investments.
Effective January 1, 2026, the target asset allocation for the RCBP assets is 45% liability hedging and 55% return-seeking assets and the target asset allocation for the DELPP assets is 65% liability hedging assets and 35% return-seeking assets. Duke Energy periodically reviews its asset allocation targets, and over time, as the funded status of the benefit plans change, the target asset allocations of the plans may be changed as well.
Qualified pension and other post-retirement benefits for the Subsidiary Registrants are derived from the Duke Energy Corporation Master Retirement Trust, as such, each are allocated their proportionate share of the assets discussed below.
The following table includes the target asset allocations by asset class at December 31, 2025, and the actual asset allocations for the RCBP assets.
Actual Allocation at
TargetDecember 31,
Allocation20252024
Global equity securities36 %37 %44 %
Global private equity securities1 %1 %1 %
Debt securities45 %45 %33 %
Return seeking debt securities6 %5 %7 %
Hedge funds5 %5 %5 %
Real assets and cash
7 %7 %10 %
Total100 %100 %100 %
The following table includes the target asset allocations by asset class at December 31, 2025, and the actual asset allocations for the DELPP assets.
Actual Allocation at
TargetDecember 31,
Allocation20252024
Global equity securities22 %23 %15 %
Debt securities65 %64 %79 %
Return seeking debt securities4 %3 %2 %
Hedge funds5 %5 %— %
Real assets and cash
4 %5 %4 %
Total100 %100 %100 %
Other post-retirement assets
Duke Energy's other post-retirement assets are comprised of Voluntary Employees' Beneficiary Association (VEBA) trusts and 401(h) accounts held within the Duke Energy Corporation Master Retirement Trust. Duke Energy's investment objective is to achieve sufficient returns, subject to a prudent level of portfolio risk, for the purpose of promoting the security of plan benefits for participants.
The following table presents target and actual asset allocations for the VEBA trusts at December 31, 2025.
Actual Allocation at
TargetDecember 31,
Allocation20252024
U.S. equity securities29 %32 %34 %
Non-U.S. equity securities14 %17 %15 %
Real estate4 %7 %7 %
Debt securities48 %28 %31 %
Cash5 %16 %13 %
Total100 %100 %100 %
Fair Value Measurements
Duke Energy classifies recurring and nonrecurring fair value measurements based on the fair value hierarchy as discussed in Note 17.
Valuation methods of the primary fair value measurements disclosed below are as follows:
Investments in equity securities
Investments in equity securities are typically valued at the closing price in the principal active market as of the last business day of the reporting period. Principal active markets for equity prices include published exchanges such as NASDAQ and NYSE. Foreign equity prices are translated from their trading currency using the currency exchange rate in effect at the close of the principal active market. Prices have not been adjusted to reflect after-hours market activity. The majority of investments in equity securities are valued using Level 1 measurements. When the price of an institutional commingled fund is unpublished, it is not categorized in the fair value hierarchy, even though the funds are readily available at the fair value.
Investments in corporate debt securities and U.S. government securities
Most debt investments are valued based on a calculation using interest rate curves and credit spreads applied to the terms of the debt instrument (maturity and coupon interest rate) and consider the counterparty credit rating. Most debt valuations are Level 2 measurements. If the market for a particular fixed-income security is relatively inactive or illiquid, the measurement is Level 3. U.S. Treasury debt is typically Level 2.
Investments in short-term investment funds
Investments in short-term investment funds are valued at the net asset value of units held at year end and are readily redeemable at the measurement date. Investments in short-term investment funds with published prices are valued as Level 1. Investments in short-term investment funds with unpublished prices are valued as Level 2.
Duke Energy Corporation Master Retirement Trust
The following tables provide the fair value measurement amounts for the Duke Energy Corporation Master Retirement Trust qualified pension and other post-retirement assets.
December 31, 2025
Total FairNot
(in millions)ValueLevel 1Level 2Level 3
Categorized(b)
Equity securities$2,630 $2,428 $202 $— $— 
Corporate debt securities2,163 — 2,163 — — 
Short-term investment funds355 — 355 — — 
Partnership interests80 — — 80 — 
Hedge funds301 — — — 301 
U.S. government securities1,609 — 1,609 — — 
Governments bonds – foreign133 — 133 — — 
Cash30 30 — — — 
Government and commercial mortgage-backed securities
1 — 1 — — 
Net pending transactions and other investments(6)(7)1 — — 
Total assets(a)
$7,296 $2,451 $4,464 $80 $301 
(a)    Progress Energy, Duke Energy Carolinas, Duke Energy Florida, Duke Energy Progress, Duke Energy Indiana, Duke Energy Ohio and Piedmont were allocated approximately 34%, 26%, 19%, 15%, 7%, 4% and 4% respectively, of the Duke Energy Corporation Master Retirement Trust at December 31, 2025. Accordingly, all amounts included in the table above are allocable to the Subsidiary Registrants using these percentages.
(b)    Certain investments that are measured at fair value using the net asset value per share practical expedient have not been categorized in the fair value hierarchy.
December 31, 2024
Total FairNot
(in millions)ValueLevel 1Level 2Level 3
Categorized(b)
Equity securities$2,461 $2,216 $231 $— $14 
Corporate debt securities2,415 — 2,415 — — 
Short-term investment funds310 — 310 — — 
Partnership interests68 — — 68 — 
Hedge funds164 — — — 164 
U.S. government securities1,398 — 1,398 — — 
Governments bonds – foreign128 — 128 — — 
Cash15 15 — — — 
Government and commercial mortgage-backed securities
1 — 1 — — 
Net pending transactions and other investments9 11 (2)— — 
Total assets(a)
$6,969 $2,242 $4,481 $68 $178 
(a)    Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont were allocated approximately 27%, 33%, 15%, 18%, 5%, 7% and 3%, respectively, of the Duke Energy Corporation Master Retirement Trust at December 31, 2024. Accordingly, all amounts included in the table above are allocable to the Subsidiary Registrants using these percentages.
(b)    Certain investments that are measured at fair value using the net asset value per share practical expedient have not been categorized in the fair value hierarchy.
The following table provides a reconciliation of beginning and ending balances of Duke Energy Corporation Master Retirement Trust qualified pension and other post-retirement assets at fair value on a recurring basis where the determination of fair value includes significant unobservable inputs (Level 3).
(in millions)20252024
Balance at January 1$68 $76 
Sales(14)(10)
Total gains and other, net26 2 
Balance at December 31$80 $68 
Other post-retirement assets
The following tables provide the fair value measurement amounts for VEBA trust assets.
December 31, 2025
Total Fair
(in millions)ValueLevel 2
Cash and cash equivalents$4 $4 
Real estate1 1 
Equity securities12 12 
Debt securities7 7 
Total assets$24 $24 
December 31, 2024
Total Fair
(in millions)ValueLevel 2
Cash and cash equivalents$3 $3 
Real estate1 1 
Equity securities10 10 
Debt securities6 6 
Total assets$20 $20 
EMPLOYEE SAVINGS PLANS
Retirement Savings Plan
Duke Energy Corporation sponsors, and the Subsidiary Registrants participate in, an employee savings plan that covers substantially all U.S. employees. Most employees participate in a matching contribution formula where Duke Energy provides a matching contribution generally equal to 100% of employee before-tax and Roth 401(k) contributions of up to 6% of eligible pay per pay period. Dividends on Duke Energy shares held by the savings plans are charged to retained earnings when declared and shares held in the plans are considered outstanding in the calculation of basic and diluted EPS. For new and rehired employees who are not eligible to participate in Duke Energy’s defined benefit plans, an additional employer contribution of 4% of eligible pay per pay period, which is subject to a three-year vesting schedule, is provided to the employee’s savings plan account.
The following table includes pretax employer matching contributions made by Duke Energy and expensed by the Subsidiary Registrants.
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Years ended December 31,
2025$272 $90 $77 $47 $30 $7 $17 $15 
2024257 81 72 43 29 6 13 14 
2023238 75 62 40 22 6 13 13 
v3.25.4
Income Taxes
 12 Months Ended
Dec. 31, 2025
Income Tax Disclosure [Abstract]  
Income Taxes INCOME TAXES
Inflation Reduction Act and the OBBBA
In August 2022, the IRA was signed into law. Among other provisions, the IRA implemented a new 15% corporate alternative minimum tax based on GAAP net income, with certain adjustments as defined by the IRA, and clean energy-related provisions. The IRA's clean energy provisions included, among other provisions, the extension and modification of existing investment and PTCs for projects placed in service through 2024 and introduced new technology-neutral clean energy-related tax credits beginning in 2025. In addition, the IRA created a new, zero-emission nuclear power PTC and a clean hydrogen PTC.
Duke Energy Carolinas has $913 million and $449 million of nuclear PTCs recorded on its consolidated balance sheets as of December 31, 2025, and 2024, respectively. Duke Energy Progress has $152 million and $73 million of nuclear PTCs recorded on its consolidated balance sheets as of December 31, 2025, and 2024, respectively. These amounts represent the estimated net realizable value of the PTCs, which were deferred to a regulatory liability. The Company will continue to assess its calculations and interpretations as new information and guidance becomes available.
In 2025, proceeds of $723 million were received, net of discount, related to the sale of tax credits, which primarily includes $530 million of nuclear power PTCs at Duke Energy Carolinas, $83 million of nuclear power PTCs at Duke Energy Progress and $69 million of solar PTCs at Duke Energy Florida. In 2024, net proceeds of $558 million were received related to the sale of tax credits, which primarily includes $428 million of nuclear power PTCs at Duke Energy Carolinas, $65 million of nuclear power PTCs at Duke Energy Progress, and $43 million of solar PTCs at Duke Energy Florida. See Note 4 for further details on the Subsidiary Registrants' regulatory process to pass the net realizable value back to customers over time, as applicable.
On July 4, 2025, the One Big Beautiful Bill Act (OBBBA) was signed into law, which among other things, modified tax legislation affecting clean energy tax credits. While transferability was preserved for tax credits established by the IRA, including the nuclear PTC, which remains available through 2032, the legislation phases out or terminates certain tax credits sooner than previously scheduled. To remain eligible for the PTC or ITC, solar and wind facilities must be placed in service by December 31, 2027, unless construction begins by July 4, 2026. For other types of facilities, the credits continue to be available at full value if construction begins by December 31, 2033, although there are new prohibited foreign entity restrictions. The OBBBA did not change the federal corporate income tax rate and did not require the remeasurement of deferred tax assets or liabilities. While there were no material current year impacts to the results of operations, financial position or cash flows for the Duke Energy Registrants as a result of the OBBBA being signed into law as of December 31, 2025, the Company will continue to evaluate the future impact of this tax law change as additional information and guidance becomes available.
Corporate Alternative Minimum Tax
On February 18, 2026, the U.S. Treasury Department published Notice 2026-7 (Notice) providing additional interim guidance on application of the Corporate Alternative Minimum Tax (CAMT) under the Internal Revenue Code. The notice includes adjustments to adjusted financial statement income that permit taxpayers to deduct certain tax-deductible repairs with respect to Section 168 property for CAMT purposes, as well as other adjustments related to capitalization differences. Duke Energy is evaluating the potential impact of this Notice on its CAMT liability for the current and prior taxable years, including any required financial statement adjustments, tax provision effects, or related disclosures. Duke Energy believes the interim guidance will impact the future tax liabilities but is unable to reasonably estimate the ultimate financial statement impact pending further analysis and any forthcoming proposed or final regulations.
Improvements to Income Tax Disclosures
In December 2023, the Financial Accounting Standards Board (FASB) issued new accounting guidance to enhance income tax disclosures by requiring consistent categorization and additional disaggregation of information in the rate reconciliation, as well as an annual disclosure of income taxes paid information disaggregated by jurisdiction. The Duke Energy Registrants adopted this guidance on a prospective basis as of January 1, 2025, in the Company's 2025 Form 10-K. This guidance impacted the financial statement disclosures with no impact on the results of operations, cash flows or financial condition.
Income Tax Expense
Components of Income Tax Expense
Tax benefit from discontinued operations, in the following tables, includes income tax benefits related to the Commercial Renewables Disposal Groups. See Note 2 for further details.
 Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current income taxes
Federal(a)
$(565)$(278)$134 $(118)$264 $66 $125 $65 
State (6)30 21 (3)74 2 13 7 
Foreign 2 — — — — — — — 
Total current income taxes (569)(248)155 (121)338 68 138 72 
Deferred income taxes       
Federal 1,101 432 259 319 (57)(3)(64)37 
State 135 27 76 29 9 3 11 3 
Total deferred income taxes(b)
1,236 459 335 348 (48)— (53)40 
ITC amortization (25)(17)(5)(4)(1)— (3)— 
Income tax expense from continuing operations 642 194 485 223 289 68 82 112 
(a)    Transferrable Federal credits under IRC Section 6418 are recorded net of discount in current Federal income tax expense.
(b)     Total deferred income taxes include income tax attribute (generation)/utilization, under the tax sharing agreement, as follows:
Duke Energy: $354 million
Duke Energy Carolinas: $(36) million
Progress Energy: $(11) million
Duke Energy Progress: $(29) million
Duke Energy Florida: $4 million
Duke Energy Ohio: $(14) million
Duke Energy Indiana: $(45) million
Piedmont: $(2) million
 Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current income taxes        
Federal
$(365)$178 $359 $373 $14 $52 $70 $40 
State 31 75 34 40 (12)3 12 (6)
Foreign 2 — — — — — — — 
Total current income taxes (332)253 393 413 2 55 82 34 
Deferred income taxes
Federal 858 10 (22)(215)181 8 (19)40 
State 81 (25)59 (6)86 1 8 21 
Total deferred income taxes(a)
939 (15)37 (221)267 9 (11)61 
ITC amortization (17)(12)(4)(3)(1)— — — 
Income tax expense from continuing operations 590 226 426 189 268 64 71 95 
Tax benefit from discontinued operations (50)— — — — — — — 
Total income tax expense included in Consolidated Statements of Operations
$540 $226 $426 $189 $268 $64 $71 $95 
(a)    Total deferred income taxes include the utilization of NOL carryforwards and tax credit carryforwards of $523 million at Duke Energy and $8 million at Duke Energy Indiana. In addition, total deferred income taxes include the generation of NOL carryforwards and tax credit carryforwards of $47 million at Duke Energy Carolinas, $85 million at Progress Energy, $66 million at Duke Energy Progress, $30 million at Duke Energy Florida, $26 million at Duke Energy Ohio, and $8 million at Piedmont.
 Year Ended December 31, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current income taxes        
Federal(b)
$71 $173 $459 $198 $279 $(46)$10 $44 
State 1 22 38 4 71 (3)9 3 
Foreign 3 — — — — — — — 
Total current income taxes 75 195 497 202 350 (49)19 47 
Deferred income taxes
Federal 319 (43)(154)(69)(89)111 77 25 
State 53 (7)38 19 — 1 14 12 
Total deferred income taxes(a)
372 (50)(116)(50)(89)112 91 37 
ITC amortization (9)(4)(4)(3)— — — — 
Income tax expense from continuing operations
438 141 377 149 261 63 110 84 
Tax benefit from discontinued operations (359)— — — — — — — 
Total income tax expense included in Consolidated Statements of Operations
$79 $141 $377 $149 $261 $63 $110 $84 
(a)    Total deferred income taxes includes the generation of NOL carryforwards and tax credit carryforwards of $214 million at Duke Energy and $54 million at Duke Energy Indiana. In addition, total deferred income taxes includes the generation of NOL carryforwards and tax credit carryforwards of $2 million at Duke Energy Carolinas, $116 million at Progress Energy, $59 million at Duke Energy Progress, $5 million at Duke Energy Florida, $22 million at Duke Energy Ohio, and $15 million at Piedmont.
(b)    Total current federal income tax at Duke Energy includes corporate alternative minimum tax, net of tax credit utilization, of $69 million. In addition, under the IRA transferability provision, Progress Energy elected to sell $28 million of PTCs generated by Duke Energy Florida.    
Duke Energy Income from Continuing Operations before Income Taxes
 Years Ended December 31,
(in millions)202520242023
Domestic$5,674 $5,145 $4,700 
Foreign38 49 67 
Income from continuing operations before income taxes$5,712 $5,194 $4,767 
Statutory Rate Reconciliation
The following tables present a reconciliation of income tax expense at the U.S. federal statutory tax rate to the actual tax expense from continuing operations.
 Year Ended December 31, 2025
DukeDuke EnergyProgressDuke Energy
($ in millions and effective tax rate in percent)EnergyCarolinasEnergyProgress
U.S. Federal statutory income tax$1,200 21.0 %$483 21.0 %$609 21.0 %$316 21.0 %
Federal
Tax credits
PTCs (solar)
(65)(1.1)%— — %(65)(2.2)%(1)— %
Amortization of PTCs (nuclear)
(36)(0.6)%(36)(1.6)%— — %— — %
Amortization of ITCs
(25)(0.4)%(17)(0.7)%(5)(0.2)%(4)(0.3)%
Other(23)(0.4)%(11)(0.5)%(9)(0.3)%(6)(0.4)%
Nontaxable and Nondeductible
    Regulatory Deferrals
AFUDC equity income(68)(1.2)%(30)(1.3)%(25)(0.9)%(21)(1.4)%
AFUDC equity depreciation46 0.8 %19 0.8 %19 0.7 %11 0.7 %
Amortization of EDIT(466)(8.2)%(260)(11.3)%(118)(4.1)%(96)(6.4)%
    Other(27)(0.5)%(1)— %1 — %2 0.1 %
Changes in valuation allowances7 0.1 %— — %— — %— — %
Foreign tax effects(6)(0.1)%— — %— — %— — %
Unrecognized tax benefits(1)— %— — %(1)— %(1)— %
Domestic state and local income taxes, net of federal effect(a)
106 1.8 %47 2.0 %79 2.7 %23 1.5 %
Total$642 11.2 %$194 8.4 %$485 16.7 %$223 14.8 %
 Year Ended December 31, 2025
Duke Energy
Duke Energy
Duke Energy
($ in millions and effective tax rate in percent)
Florida
Ohio
Indiana
Piedmont
U.S. Federal statutory income tax$311 21.0 %$85 21.0 %$127 21.0 %$116 21.0 %
Federal
Tax credits
PTCs (solar)
(64)(4.3)%— — %— — %— — %
Amortization of PTCs (nuclear)
— — %— — %— — %— — %
Amortization of ITCs
(1)(0.1)%— — %(3)(0.5)%— — %
Other(3)(0.2)%(1)(0.2)%(1)(0.2)%(1)(0.2)%
Nontaxable and Nondeductible
    Regulatory Deferrals
AFUDC equity income(4)(0.3)%(3)(0.7)%(6)(1.0)%(4)(0.7)%
AFUDC equity depreciation8 0.5 %4 1.0 %4 0.7 %1 0.2 %
Amortization of EDIT(22)(1.5)%(22)(5.4)%(57)(9.5)%(8)(1.4)%
    Other(3)(0.2)%0— %0(0.1)%0(0.2)%
Changes in valuation allowances— — %— — %— — %— — %
Foreign tax effects— — %— — %— — %— — %
Unrecognized tax benefits1 0.1 %— — %— — %— — %
Domestic state and local income taxes, net of federal effect(a)
66 4.5 %4 1.0 %19 3.2 %9 1.6 %
Total$289 19.5 %$68 16.7 %$82 13.6 %$112 20.3 %
(a)    Jurisdictions that make up the majority of the registrant's respective domestic state income taxes, net of federal effect, are as follows:
•Duke Energy: North Carolina, South Carolina and Florida
•Duke Energy Carolinas: North Carolina and South Carolina
•Progress Energy: Florida and North Carolina
•Duke Energy Progress: North Carolina and South Carolina
•Duke Energy Florida: Florida
•Duke Energy Ohio: Kentucky
•Duke Energy Indiana: Indiana
•Piedmont: North Carolina, Tennessee and South Carolina
 Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Income tax expense, computed at the statutory rate of 21%$1,090$443$545$284$279$85$108$107
State income tax, net of federal income tax effect8840 73275831612
Amortization of EDIT
(436)(225)(121)(98)(23)(23)(49)(18)
AFUDC equity income(48)(24)(16)(13)(3)(1)(3)(4)
AFUDC equity depreciation3819147724—
Production tax credits
(46)—(46)—(46)———
Other tax credits
(43)(23)(16)(12)(4)(1)(2)(2)
Other items, net(53)(4)(7)(6)—(1)(3)—
Income tax expense from continuing operations
$590 $226 $426 $189 $268 $64 $71 $95 
Effective tax rate11.4 %10.7 %16.4 %14.0 %20.2 %15.8 %13.9 %18.7 %
 Year Ended December 31, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Income tax expense, computed at the statutory rate of 21%$1,001$338$490$241$268$83$128$97
State income tax, net of federal income tax effect4312 601856(2)1812
Amortization of EDIT
(388)(197)(114)(91)(23)(22)(33)(20)
AFUDC equity income(41)(19)(14)(11)(3)(2)(2)(4)
AFUDC equity depreciation3718136724—
Tax credits(b)
(63)(11)(46)(7)(39)(2)(2)(1)
Interest on company-owned life insurance(a)
(114)———————
Other items, net(37)—(12)(7)(5)6(3)—
Income tax expense from continuing operations
$438 $141 $377 $149 $261 $63 $110 $84 
Effective tax rate9.2 %8.8 %16.2 %13.0 %20.4 %15.9 %18.1 %18.1 %
(a)     During 2023, the Company evaluated the deductibility of certain items spanning periods currently open under federal statute, including items related to interest on company-owned life insurance. As a result of this analysis, the Company recorded a favorable federal adjustment of approximately $114 million and a favorable state adjustment of approximately $6 million. The favorable state adjustment is included in State income tax, net of federal income tax effect, in the above table.
(b)    Tax credits at Progress Energy and Duke Energy Florida include $28 million of certain eligible PTCs, net of discount, that were elected to be sold in 2023 under the transferability provisions of the IRA.
DEFERRED TAXES
Net Deferred Income Tax Liability Components
 December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Deferred credits and other liabilities $254 $217 $82 $49 $33 $23 $15 $21 
Lease obligations 452 86 263 184 79 1 11 1 
Pension, post-retirement and other employee benefits 20 — — — — 3 — — 
Progress Energy merger purchase accounting adjustments(a)
210 — — — — — — — 
Tax credits and NOL carryforwards 3,259 595 844 383 452 84 191 58 
Investments and other assets
— — — — — 2 19 — 
Other 36 2 4 3 1 4 (1)7 
Valuation allowance (130)(1)— — — — — — 
Total deferred income tax assets 4,101 899 1,193 619 565 117 235 87 
Investments and other assets (2,452)(1,545)(829)(790)(54)— — (68)
Pension post-retirement and other employee benefits
— (43)(57)(13)(48)— (3)(6)
Accelerated depreciation rates (12,629)(3,219)(5,171)(1,914)(3,301)(1,414)(1,701)(1,072)
Regulatory assets and deferred debits, net (1,397)(283)(712)(544)(167)(44)(56)(12)
Total deferred income tax liabilities (16,478)(5,090)(6,769)(3,261)(3,570)(1,458)(1,760)(1,158)
Net deferred income tax liabilities$(12,377)$(4,191)$(5,576)$(2,642)$(3,005)$(1,341)$(1,525)$(1,071)
(a)    Primarily related to lease obligations and debt fair value adjustments.
The following table presents the expiration of tax credits and NOL carryforwards.
 December 31, 2025
(in millions)AmountExpiration Year
General Business Credits$1,908 2032—2045
Foreign Tax Credits(c)
36 2027—2028
State Carryforwards and Credits(a)
265 2026—Indefinite
Corporate AMT Credits1,038 Indefinite
Foreign NOL carryforwards(b)
12 2027—2045
Total tax credits and NOL carryforwards$3,259    
(a)    A valuation allowance of $83 million has been recorded on the state NOL and attribute carryforwards, as presented in the Net Deferred Income Tax Liability Components table.
(b)    A valuation allowance of $12 million has been recorded on the foreign NOL carryforwards, as presented in the Net Deferred Income Tax Liability Components table.
(c)    A valuation allowance of $36 million has been recorded on the foreign tax credits, as presented in the Net Deferred Income Tax Liability Components table.
 December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Deferred credits and other liabilities $284 $217 $84 $43 $41 $17 $15 $40 
Lease obligations 430 88 265 179 86 2 12 2 
Pension, post-retirement and other employee benefits 89 (33)(23)(1)(26)6 1 (2)
Progress Energy merger purchase accounting adjustments(a)
227 — — — — — — — 
Tax credits and NOL carryforwards 3,845 522 783 312 449 70 145 57 
Regulatory liabilities and deferred credits— — — — — — 10 — 
Other 35 11 5 3 2 4 — 8 
Valuation allowance (517)— — — — — — — 
Total deferred income tax assets 4,393 805 1,114 536 552 99 183 105 
Investments and other assets (2,114)(1,350)(724)(671)(69)— — (48)
Accelerated depreciation rates (11,942)(3,203)(4,608)(1,624)(3,047)(1,361)(1,677)(1,019)
Regulatory assets and deferred debits, net (1,761)(304)(1,045)(585)(460)(52)— (56)
Total deferred income tax liabilities (15,817)(4,857)(6,377)(2,880)(3,576)(1,413)(1,677)(1,123)
Net deferred income tax liabilities $(11,424)$(4,052)$(5,263)$(2,344)$(3,024)$(1,314)$(1,494)$(1,018)
(a)    Primarily related to lease obligations and debt fair value adjustments.
INCOME TAXES PAID
The following table presents income taxes paid.
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Federal
   Internal Revenue Service – payments/(refunds)
58 561 424 211 202 100 182 55 
   Transferrable Credits – purchased/(sold)
(676)(551)(171)(102)(69)— — — 
   Total Federal
(618)10 253 109 133 100 182 55 
State income tax payments/(refunds)
   North Carolina(4)39 7 9 — — — — 
   South Carolina— 36 — 2 — — — — 
   Florida— — 5 — 34 — — — 
   Indiana— — — — — — 26 — 
Kentucky1 — — — — 3 — — 
Oklahoma(4)— — — — — — — 
   Other
— — — — — — — — 
   Total State
(7)75 12 11 34 3 26 — 
Total Income Taxes Paid (net of refunds)
$(625)$85 $265 $120 $167 $103 $208 $55 
UNRECOGNIZED TAX BENEFITS
The following tables present changes to unrecognized tax benefits.
 Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Unrecognized tax benefits – January 1$74 $25 $29 $22 $7 $2 $3 $13 
Gross increases – current period tax positions(2)— (1)(2)1 — — (1)
Unrecognized tax benefits – December 31$72 $25 $28 $20 $8 $2 $3 $12 
 Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Unrecognized tax benefits – January 1$62 $21 $24 $18 $6 $2 $3 $11 
Gross increases – current period tax positions12 4 5 4 1 — — 2 
Unrecognized tax benefits – December 31$74 $25 $29 $22 $7 $2 $3 $13 
 Year Ended December 31, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Unrecognized tax benefits – January 1$65 $17 $19 $13 $5 $1 $2 $9 
Gross decreases – tax positions in prior periods
(15)— — — — — — — 
Gross increases – current period tax positions12 4 5 5 1 1 1 2 
Total changes(3)4 5 5 1 1 1 2 
Unrecognized tax benefits – December 31$62 $21 $24 $18 $6 $2 $3 $11 
The following table includes additional information regarding the Duke Energy Registrants' unrecognized tax benefits at December 31, 2025.
 December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Amount that if recognized, would affect the
effective tax rate or regulatory liability(a)
$67 $24 $26 $18 $8 $2 $3 $11 
(a)    The Duke Energy Registrants are unable to estimate the specific amounts that would affect the ETR versus the regulatory liability.
Duke Energy and its subsidiaries are no longer subject to federal, state, local or non-U.S. income tax examinations by tax authorities for years before 2019, aside from certain tax attributes carried forward for utilization in future years.
v3.25.4
Other Income and Expenses, Net
 12 Months Ended
Dec. 31, 2025
Other Income and Expenses [Abstract]  
Other Income and Expenses, Net OTHER INCOME AND EXPENSES, NET
The components of Other income and expenses, net on the Consolidated Statements of Operations are as follows.
 Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Piedmont
Interest income$51 $17 $47 $39 $9 $3 $6 $19 
AFUDC equity 328 144 117 100 17 16 34 17 
Post-in-service equity returns
47 26 19 19 — — 2 — 
Nonoperating income, other 243 71 104 38 64 5 19 5 
Other income and expense, net $669 $258 $287 $196 $90 $24 $61 $41 
 Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Piedmont
Interest income $63 $9 $18 $14 $4 $8 $5 $19 
AFUDC equity 233 113 74 61 13 7 19 21 
Post-in-service equity returns
52 31 20 20 — 1 1 — 
Nonoperating income, other313 94 123 48 69 3 37 14 
Other income and expense, net $661 $247 $235 $143 $86 $19 $62 $54 
 Year Ended December 31, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Piedmont
Interest income $29 $10 $14 $9 $7 $25 $25 $19 
AFUDC equity 198 91 67 52 15 9 10 21 
Post-in-service equity returns
39 19 19 19 — 1 — — 
Nonoperating income, other332 118 101 44 56 6 41 17 
Other income and expense, net$598 $238 $201 $124 $78 $41 $76 $57 
v3.25.4
Subsequent Events
 12 Months Ended
Dec. 31, 2025
Subsequent Events [Abstract]  
Subsequent Events SUBSEQUENT EVENTS
For information on subsequent events related to regulatory matters, commitments and contingencies, debt and credit facilities, and asset retirement obligations, see Notes 4, 5, 7 and 10, respectively.
v3.25.4
Insider Trading Arrangements
 3 Months Ended
Dec. 31, 2025
shares
Trading Arrangements, by Individual  
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
Kodwo Ghartey-Tagoe [Member]  
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement On November 28, 2025, Kodwo Ghartey-Tagoe, Executive Vice President and Chief Executive Officer, Duke Energy Carolinas & Natural Gas Business, adopted a 10b5-1 trading arrangement for the sale of up to 27,118 shares of the Company's common stock between March 2, 2026, and November 20, 2026, or such earlier date such plan is terminated sooner pursuant to the terms specified therein, including but not limited to the execution of all trades specified therein.
Name Kodwo Ghartey-Tagoe
Title Executive Vice President and Chief Executive Officer
Rule 10b5-1 Arrangement Adopted true
Adoption Date November 28, 2025
Expiration Date November 20, 2026
Arrangement Duration 263 days
Aggregate Available 27,118
Regis Repko [Member]  
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement On November 19, 2025, Regis Repko, Senior Vice President, System Planning and Construction, adopted a10b5-1 trading arrangement for the sale of up to 6,884 shares of the Company's common stock between February 20, 2026, and December 31, 2026, or such earlier date such plan is terminated sooner pursuant to the terms specified therein, including but not limited to the execution of all trades specified therein.
Name Regis Repko
Title Senior Vice President, System Planning and Construction
Rule 10b5-1 Arrangement Adopted true
Adoption Date November 19, 2025
Expiration Date December 31, 2026
Arrangement Duration 314 days
Aggregate Available 6,884
Brian Savoy [Member]  
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement On November 14, 2025, Brian Savoy, Executive Vice President and Chief Financial Officer, adopted a 10b5-1 trading arrangement for the sale of up to 12,000 shares of the Company's common stock between February 23, 2026, and November 6, 2026, or such earlier date such plan is terminated sooner pursuant to the terms specified therein, including but not limited to the execution of all trades specified therein.
Name Brian Savoy
Title Executive Vice President and Chief Financial Officer
Rule 10b5-1 Arrangement Adopted true
Adoption Date November 14, 2025
Expiration Date November 6, 2026
Arrangement Duration 256 days
Aggregate Available 12,000
v3.25.4
Insider Trading Policies and Procedures
 12 Months Ended
Dec. 31, 2025
Insider Trading Policies and Procedures [Line Items]  
Insider Trading Policies and Procedures Adopted true
v3.25.4
Cybersecurity Risk Management and Strategy Disclosure
 12 Months Ended
Dec. 31, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items]  
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
Ensuring the security of Duke Energy’s assets, information and teammates is vital for delivering the essential service on which Duke Energy’s customers and communities depend. In light of the ever-evolving threat landscape and increasing sophistication of threat actor tactics, techniques and procedures, steadfast and advanced cybersecurity and security operations are integral parts of Duke Energy’s enterprise risk management framework. Duke Energy's enterprise risk management framework is used across the enterprise by subject matter experts to identify, assess, monitor and communicate enterprise level risks to the Chief Risk Officer. Duke Energy’s technology and cybersecurity risk management program is integrated into the Company’s overall Enterprise Risk Management program and is composed of three primary lines of defense: (1) the Cybersecurity Incident Response Team (CIRT); (2) the Duke Energy Enterprise Security Team (EST); and (3) internal and external cybersecurity audits. This framework also incorporates the identification and management of risks associated with the Company’s development and use of AI technologies, including AI‑related cybersecurity considerations. Duke Energy monitors the threat landscape to understand both how threat actors are operating currently and how they are developing capabilities using emerging technologies such as AI and quantum computing. Our risk management program is flexible and allows us to pivot as threat actors evolve.
Duke Energy’s first line of defense is the CIRT under the Office of the Chief Administrative Officer (CAO). The CIRT reports up to leaders in the Chief Security and Information Security Office, including the Chief Security and Information Security Officer (CSISO), Managing Director of Cybersecurity and Network Defense, and Director of Cybersecurity Operations, whose cybersecurity backgrounds include many years serving in operational cyber roles, leading incident response, participating in industry engagement, collaborating with federal and local cyber programs, and time analyzing security breaches across the industry. The CIRT oversees an enterprisewide process that identifies, assesses, responds to and resolves cyber incidents, both internal and those associated with the Company’s use of third-party service providers, by defining roles, responsibilities and the process for problem source identification, mitigation, and eradication triggered by a suspected cyber incident. Duke Energy manages cybersecurity threats through its 24/7 Duke Energy Cybersecurity Operations Center (CSOC), which serves as the Company’s central command center for monitoring and coordinating responses to cyberthreats. The CSOC engages in daily information sharing within the utilities industry and with government partners and monitors incoming intelligence and cyber incident impacts. The CSOC assesses the relevant information by assigning a CIRT Heat Map score, which results in CIRT activation if a certain threat level is met. It also results in the assignment of additional roles and responsibilities to enable the cybersecurity leadership and technical teams to collectively and regularly review incident information, score the impact, communicate to leadership, and respond appropriately. Another key component of Duke Energy’s first line of defense against cybersecurity threats is its Third-Party Risk Management (TPRM) process, whereby third parties providing services that meet certain criteria such as storing or transmitting Duke Energy data, hosting an application, or connecting to the Duke Energy network are required to undergo a cybersecurity assessment primarily to ascertain the risk of a third-party’s proposed services to Duke Energy. As part of this process, the Company also evaluates the cybersecurity and data‑protection risks associated with third‑party AI tools and services.
Duke Energy’s second line of defense against cybersecurity threats is the EST, which is led by the CSISO, and actively evaluates, anticipates and tests Duke Energy’s cybersecurity risk level and preventive and risk mitigation controls relative to the enterprisewide risk level and controls. The EST is responsible for infrastructure defense and security controls, performing vulnerability assessments and third-party information security assessments, employee awareness and training programs and security incident management, including oversight of the remediation of cybersecurity incidents. The EST monitors cyber activity and also reports on the status of the Company’s cybersecurity performance and any ongoing remediation efforts to the Company’s CAO, Chief Information Officer (CIO) and CSISO. The CAO and CSISO report these cybersecurity metrics, which use a vulnerability management scoring system and closely align with the National Institute of Standards and Technology Cybersecurity Framework, to the Audit Committee at each regularly scheduled Audit Committee meeting. The EST also employs tools and oversees and challenges Duke Energy’s cybersecurity and technology metrics under its Enterprise Security Risk Register to track, identify and manage risk. The EST also partners with relevant technology and compliance teams to assess controls relating to the Company’s internal use of AI technologies and to monitor emerging AI‑enabled cybersecurity threat vectors in alignment with Duke Energy’s internal AI governance policies. To this end, the EST engages outside expert firms to perform a comprehensive external penetration test each year, performs system and application penetration testing several times throughout the year, and conducts annual exercises simulating the tactics, techniques, and procedures of advanced threat actor groups to test the Company’s ability to prevent penetration, detect suspicious activity and respond to these threats in a timely manner. Lessons learned inform the ongoing improvement of security preventive and mitigating controls and procedures and the results of such testing and threat actor simulations are shared with senior management and the Board of Directors.
Duke Energy also has a senior management committee, the Executive Cybersecurity Oversight Governance Committee (ECOG), which governs enterprise-level cybersecurity risk tolerance.
Cybersecurity Risk Management Processes Integrated [Flag] true
Cybersecurity Risk Management Processes Integrated [Text Block] . Duke Energy’s technology and cybersecurity risk management program is integrated into the Company’s overall Enterprise Risk Management program and is composed of three primary lines of defense: (1) the Cybersecurity Incident Response Team (CIRT); (2) the Duke Energy Enterprise Security Team (EST); and (3) internal and external cybersecurity audits. This framework also incorporates the identification and management of risks associated with the Company’s development and use of AI technologies, including AI‑related cybersecurity considerations. Duke Energy monitors the threat landscape to understand both how threat actors are operating currently and how they are developing capabilities using emerging technologies such as AI and quantum computing. Our risk management program is flexible and allows us to pivot as threat actors evolve.
Cybersecurity Risk Management Third Party Engaged [Flag] true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag] true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] false
Cybersecurity Risk Board of Directors Oversight [Text Block] In addition, the Operations and Nuclear Oversight Committee (ONOC) of the Board of Directors provides oversight of the nuclear safety and cybersecurity of Duke Energy’s nuclear power program, which is integrated with the companywide cyber protocols, and the Chair of the ONOC reports out to the Board of Directors on such oversight activities.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] Operations and Nuclear Oversight Committee
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block] In addition, the Operations and Nuclear Oversight Committee (ONOC) of the Board of Directors provides oversight of the nuclear safety and cybersecurity of Duke Energy’s nuclear power program, which is integrated with the companywide cyber protocols, and the Chair of the ONOC reports out to the Board of Directors on such oversight activities.
Cybersecurity Risk Role of Management [Text Block]
The Audit Committee has primary oversight of management’s efforts to mitigate cybersecurity and technology risk and respond to cyber incidents. The Audit Committee receives updates throughout the year from the CAO and CSISO on cybersecurity and grid security issues, including compliance with regulations, employee training and drills, at every regularly scheduled Audit Committee meeting, and engages in discussions throughout the year with management on the effectiveness of Duke Energy’s overall cybersecurity program and progress for addressing any identified risks. In 2025, the Audit Committee received three updates and the full Board of Directors received one update on cybersecurity. The Audit Committee also receives periodic updates on Duke Energy’s digital transformation and the operation of, and enhancements to, the Company’s financial systems and business and operational technical systems. These updates include, as appropriate, information regarding the Company’s AI governance practices and management’s evaluation of emerging AI‑related technology and cybersecurity risks. The reviews presented to the Audit Committee are followed with an update to the full Board of Directors by the Chair of the Audit Committee.
In addition, the Operations and Nuclear Oversight Committee (ONOC) of the Board of Directors provides oversight of the nuclear safety and cybersecurity of Duke Energy’s nuclear power program, which is integrated with the companywide cyber protocols, and the Chair of the ONOC reports out to the Board of Directors on such oversight activities. Duke Energy’s nuclear cybersecurity program and associated cybersecurity plan (CSP) were fully implemented in 2017 in accordance with NRC regulation 10 CFR 73.54, “Protection of digital computer and communication systems and networks” and leverage monitoring, testing, drills, audits, assessments, and NRC inspections to continue to validate the effectiveness of the program to protect plant assets from cybersecurity threats.
Moreover, Duke Energy’s processes ensure that the Board of Directors receive contemporaneous reporting on potentially significant cyber events including response, legal obligations, and outreach and notification to regulators and customers when needed, as well as an opportunity to provide guidance to management as appropriate.
The relevant cybersecurity risk expertise of Duke Energy’s management who serve on the ECOG and/or senior management who lead the CIRT and EST is described below. These management teams also oversee the integration of Duke Energy’s AI governance policies into the Company’s broader cybersecurity and technology‑risk management processes.
•The CEO of Duke Energy has gained cybersecurity experience through focusing on transmission and the development of long-term grid strategies and solutions and through a prior role as Chief Distribution Officer, overseeing the safe, reliable, and efficient operation of Duke Energy’s electric distribution systems, and through serving on the board of the Association of Edison Illuminating Companies.
•The EVP and Chief Financial Officer of Duke Energy (CFO) previously served as the Company’s Chief Transformation and Administrative Officer and led the Company’s business transformation through digital innovation, new ways of working and process redesign. In this role, the CFO gained an in-depth understanding of the Company's cybersecurity procedures and key threats and was responsible for the enterprise business services and technology team, including the information and technology organization.
•The EVP, Chief Generation Officer and Enterprise Operational Excellence of Duke Energy has gained cybersecurity experience through being responsible for the safe, efficient and reliable operation of Duke Energy's fleet of nuclear, natural gas, hydro, solar and coal units.
•The CSISO of Duke Energy has over 25 years of experience building and leading security teams within multiple industries. The CSISO holds a Secret Security clearance and is committed to strengthening U.S. critical infrastructure through active collaboration with federal partners at the Federal Bureau of Investigation, Department of Energy, Department of Homeland Security, and state partners including the national guard, law enforcement and universities.
•The CAO of Duke Energy has over 29 years of experience in delivering secure information technology solutions across multiple industries, leading technology delivery for all core business functions. The CAO holds a Secret Security clearance and has active interactions and partnership with the Federal Bureau of Investigation, Edison Electric Institute and State Fusion Centers in the jurisdictions that Duke Energy serves.
Cybersecurity Risk Management Positions or Committees Responsible [Flag] true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block] Duke Energy’s first line of defense is the CIRT under the Office of the Chief Administrative Officer (CAO). The CIRT reports up to leaders in the Chief Security and Information Security Office, including the Chief Security and Information Security Officer (CSISO), Managing Director of Cybersecurity and Network Defense, and Director of Cybersecurity Operations, whose cybersecurity backgrounds include many years serving in operational cyber roles, leading incident response, participating in industry engagement, collaborating with federal and local cyber programs, and time analyzing security breaches across the industry.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]
The relevant cybersecurity risk expertise of Duke Energy’s management who serve on the ECOG and/or senior management who lead the CIRT and EST is described below. These management teams also oversee the integration of Duke Energy’s AI governance policies into the Company’s broader cybersecurity and technology‑risk management processes.
•The CEO of Duke Energy has gained cybersecurity experience through focusing on transmission and the development of long-term grid strategies and solutions and through a prior role as Chief Distribution Officer, overseeing the safe, reliable, and efficient operation of Duke Energy’s electric distribution systems, and through serving on the board of the Association of Edison Illuminating Companies.
•The EVP and Chief Financial Officer of Duke Energy (CFO) previously served as the Company’s Chief Transformation and Administrative Officer and led the Company’s business transformation through digital innovation, new ways of working and process redesign. In this role, the CFO gained an in-depth understanding of the Company's cybersecurity procedures and key threats and was responsible for the enterprise business services and technology team, including the information and technology organization.
•The EVP, Chief Generation Officer and Enterprise Operational Excellence of Duke Energy has gained cybersecurity experience through being responsible for the safe, efficient and reliable operation of Duke Energy's fleet of nuclear, natural gas, hydro, solar and coal units.
•The CSISO of Duke Energy has over 25 years of experience building and leading security teams within multiple industries. The CSISO holds a Secret Security clearance and is committed to strengthening U.S. critical infrastructure through active collaboration with federal partners at the Federal Bureau of Investigation, Department of Energy, Department of Homeland Security, and state partners including the national guard, law enforcement and universities.
•The CAO of Duke Energy has over 29 years of experience in delivering secure information technology solutions across multiple industries, leading technology delivery for all core business functions. The CAO holds a Secret Security clearance and has active interactions and partnership with the Federal Bureau of Investigation, Edison Electric Institute and State Fusion Centers in the jurisdictions that Duke Energy serves.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block] The ECOG, comprised of the Company's Chief Executive Officer (CEO), Chief Financial Officer (CFO), Chief Administrative Officer (CAO), Chief Legal Officer (CLO) and Chief Generation Officer (CGO) receives monthly updates from the CSISO and provides senior management throughout the Company informational technology and operational technology perspectives, oversight and governance on investments and priorities for the broader cybersecurity organization, in addition to providing final decision oversight on recommendations and response to the ever-challenging cybersecurity threat landscape. The ECOG also is leveraged to supply information and bring transparency to senior management throughout the Company on the increasing threat landscape and the actions, response and road map to combat the threats. In addition, the ECOG provides oversight of enterprise AI governance activities and reviews management’s integration of AI‑related risk considerations into the Company’s cybersecurity and technology‑risk oversight processes.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] true
v3.25.4
Summary of Significant Accounting Policies (Policy)
 12 Months Ended
Dec. 31, 2025
Accounting Policies [Abstract]  
Nature of Operations and Basis of Consolidation
Nature of Operations and Basis of Consolidation
Duke Energy is an energy company headquartered in Charlotte, North Carolina, subject to regulation by the FERC and other regulatory agencies listed below. Duke Energy operates in the U.S. primarily through its direct and indirect subsidiaries. Certain Duke Energy subsidiaries are also subsidiary registrants, including Duke Energy Carolinas; Progress Energy; Duke Energy Progress; Duke Energy Florida; Duke Energy Ohio; Duke Energy Indiana and Piedmont. When discussing Duke Energy’s consolidated financial information, it necessarily includes the results of its separate Subsidiary Registrants, which along with Duke Energy, are collectively referred to as the Duke Energy Registrants.
The information in these combined notes relates to each of the Duke Energy Registrants as noted in the Index to Combined Notes to Consolidated Financial Statements. However, none of the Subsidiary Registrants make any representation as to information related solely to Duke Energy or the Subsidiary Registrants of Duke Energy other than itself.
These Consolidated Financial Statements include, after eliminating intercompany transactions and balances, the accounts of the Duke Energy Registrants and subsidiaries or VIEs where the respective Duke Energy Registrants have control. See Note 18 for additional information on VIEs. These Consolidated Financial Statements also reflect the Duke Energy Registrants’ proportionate share of certain jointly owned generation and transmission facilities. See Note 9 for additional information on joint ownership. Substantially all of the Subsidiary Registrants' operations qualify for regulatory accounting.
Duke Energy Carolinas is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Carolinas is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC.
Progress Energy is a public utility holding company, which conducts operations through its subsidiaries, Duke Energy Progress and Duke Energy Florida. Progress Energy is subject to regulation by the NCUC, PSCSC, FPSC, NRC and FERC.
Duke Energy Progress is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Progress is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC.
Duke Energy Florida is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Florida. Duke Energy Florida is subject to the regulatory provisions of the FPSC, NRC and FERC.
Duke Energy Ohio is a regulated public utility primarily engaged in the transmission and distribution of electricity in portions of Ohio and Kentucky, the generation and sale of electricity in portions of Kentucky and the transportation and sale of natural gas in portions of Ohio and Kentucky. Duke Energy Ohio conducts competitive auctions for retail electricity supply in Ohio whereby the energy price is recovered from retail customers and recorded in Operating Revenues on the Consolidated Statements of Operations and Comprehensive Income. Operations in Kentucky are conducted through Duke Energy Ohio's wholly owned subsidiary, Duke Energy Kentucky. References herein to Duke Energy Ohio collectively include Duke Energy Ohio and its subsidiaries, unless otherwise noted. Duke Energy Ohio is subject to the regulatory provisions of the PUCO, KPSC and FERC.
Duke Energy Indiana is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Indiana. Duke Energy Indiana is subject to the regulatory provisions of the IURC and FERC.
Piedmont is a regulated public utility primarily engaged in the distribution of natural gas in portions of North Carolina, South Carolina and Tennessee. Piedmont is subject to the regulatory provisions of the NCUC, PSCSC, TPUC and FERC.
Certain prior year amounts have been reclassified to conform to the current year presentation.
Discontinued Operations and Held For Sale
Discontinued Operations and Held For Sale
Duke Energy has elected to present cash flows of discontinued operations combined with cash flows of continuing operations. For all periods presented, unless otherwise noted, the disclosures related to balance sheet activity exclude amounts presented as held for sale and disclosures related to income statement activity exclude amounts related to discontinued operations. For the years ended December 31, 2024 and 2023, the Income (Loss) From Discontinued Operations, net of tax on Duke Energy's Consolidated Statements of Operations includes amounts related to NCI. A portion of NCI on Duke Energy's Consolidated Balance Sheet as of December 31, 2024 relates to discontinued operations. See Note 2 for discussion of discontinued operations related to the Commercial Renewables Disposal Groups.
Use of Estimates
Use of Estimates
In preparing financial statements that conform to GAAP, the Duke Energy Registrants must make estimates and assumptions that affect the reported amounts of assets and liabilities, the reported amounts of revenues and expenses and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.
Regulatory Accounting
Regulatory Accounting
The majority of the Duke Energy Registrants’ operations are subject to price regulation for the sale of electricity and natural gas by state utility commissions or FERC. When prices are set on the basis of specific costs of the regulated operations and an effective franchise is in place such that sufficient electric services or natural gas can be sold to recover those costs, the Duke Energy Registrants apply regulatory accounting. Regulatory accounting changes the timing of the recognition of costs or revenues relative to a company that does not apply regulatory accounting. As a result, regulatory assets and regulatory liabilities are recognized on the Consolidated Balance Sheets. Regulatory assets and liabilities are amortized consistent with the treatment of the related cost in the ratemaking process. Regulatory assets are reviewed for recoverability each reporting period. If a regulatory asset is no longer deemed probable of recovery, the deferred cost is charged to earnings. See Note 4 for further information.
Regulatory accounting rules also require recognition of a disallowance (also called "impairment") loss if it becomes probable that part of the cost of a plant under construction (or a recently completed plant or an abandoned plant) will be disallowed for ratemaking purposes and a reasonable estimate of the amount of the disallowance can be made. For example, if a cost cap is set for a plant still under construction, the amount of the disallowance is a result of a judgment as to the ultimate cost of the plant. These disallowances can require judgments on allowed future rate recovery.
When it becomes probable that regulated generation, transmission or distribution assets will be abandoned, the cost of the asset is removed from plant in service. The value that may be retained as a regulatory asset on the balance sheet for the abandoned property is dependent upon amounts that may be recovered through regulated rates, including any return. As such, an impairment charge could be partially or fully offset by the establishment of a regulatory asset if rate recovery is probable. The impairment charge for a disallowance of costs for regulated plants under construction, recently completed or abandoned is based on discounted cash flows.
Regulated Fuel Costs and Purchased Power The Duke Energy Registrants utilize cost-tracking mechanisms, commonly referred to as fuel adjustment clauses or PGA clauses. These clauses allow for the recovery of fuel and fuel-related costs, portions of purchased power, natural gas costs and hedging costs through surcharges on customer rates. The difference between the costs incurred and the surcharge revenues is recorded either as an adjustment to Operating Revenues, Operating Expenses – Fuel used in electric generation or Operating Expenses – Cost of natural gas on the Consolidated Statements of Operations, with an off-setting impact on regulatory assets or liabilities
Cash, Cash Equivalents and Restricted Cash
Cash, Cash Equivalents and Restricted Cash
All highly liquid investments with maturities of three months or less at the date of acquisition are considered cash equivalents. Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress and Duke Energy Florida have restricted cash balances related primarily to collateral assets, escrow deposits and VIEs. See Note 18 for additional information. Restricted cash amounts are included in Other within Current Assets and Other Noncurrent Assets on the Consolidated Balance Sheets.
Inventory
Inventory
Inventory related to regulated operations is valued at historical cost. Inventory is charged to expense or capitalized to property, plant and equipment when issued, primarily using the average cost method. Excess or obsolete inventory is written down to the lower of cost or net realizable value. Once inventory has been written down, it creates a new cost basis for the inventory that is not subsequently written up. Provisions for inventory write-offs were not material at December 31, 2025, and 2024, respectively.
Investments in Debt and Equity Securities
Investments in Debt and Equity Securities
The Duke Energy Registrants classify investments in equity securities as FV-NI and investments in debt securities as AFS. Both categories are recorded at fair value on the Consolidated Balance Sheets. Realized and unrealized gains and losses on securities classified as FV-NI are reported through net income. Unrealized gains and losses for debt securities classified as AFS are included in AOCI until realized, unless it is determined the carrying value of an investment has a credit loss. For certain investments of regulated operations, such as substantially all of the NDTF, realized and unrealized gains and losses (including any credit losses) on debt securities are recorded as a regulatory asset or liability. The credit loss portion of debt securities of nonregulated operations are included in earnings. Investments in debt and equity securities are classified as either current or noncurrent based on management’s intent and ability to sell these securities, taking into consideration current market liquidity. As a result, the ability to hold investments in unrealized loss positions is outside the control of the Duke Energy Registrants. Accordingly, all unrealized losses associated with debt securities within the Investment Trusts are recognized immediately and deferred to regulatory accounts where appropriate.Unrealized gains and losses on all other AFS securities are included in other comprehensive income until realized, unless it is determined the carrying value of an investment has a credit loss. The Duke Energy Registrants analyze all investment holdings each reporting period to determine whether a decline in fair value is related to a credit loss. If a credit loss exists, the unrealized credit loss is included in earnings.
Goodwill and Intangible Assets
Goodwill
Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont perform annual goodwill impairment tests as of August 31 each year at the reporting unit level, which is determined to be a business segment or one level below. Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont update these tests between annual tests if events or circumstances occur that would more likely than not reduce the fair value of a reporting unit below its carrying value. See Note 12 for further information.
Intangible Assets
Intangible assets are included in Other in Other Noncurrent Assets on the Consolidated Balance Sheets. Generally, intangible assets are amortized using an amortization method that reflects the pattern in which the economic benefits of the intangible asset are consumed or on a straight-line basis if that pattern is not readily determinable. Amortization of intangibles is reflected in Depreciation and amortization on the Consolidated Statements of Operations. Intangible assets are subject to impairment testing and, if impaired, the carrying value is accordingly reduced.
Renewable energy certificates are used to measure compliance with renewable energy standards and are held primarily for consumption.
Long-Lived Asset Impairments
Long-Lived Asset Impairments
The Duke Energy Registrants evaluate long-lived assets that are held and used, excluding goodwill, for impairment when circumstances indicate the carrying value of those assets may not be recoverable. An impairment exists when a long-lived asset’s carrying value exceeds the estimated undiscounted cash flows expected to result from the use and eventual disposition of the asset. The estimated cash flows may be based on alternative expected outcomes that are probability weighted. If the carrying value of the long-lived asset is not recoverable based on these estimated future undiscounted cash flows, the carrying value of the asset is written down to its then current estimated fair value and an impairment charge is recognized.
The Duke Energy Registrants assess fair value of long-lived assets that are held and used using various methods, including recent comparable third-party sales, internally developed discounted cash flow analysis and analysis from outside advisors. Triggering events to reassess cash flows may include, but are not limited to, significant changes in commodity prices, the condition of an asset or management’s interest in selling the asset.
Property, Plant and Equipment
Property, Plant and Equipment
Property, plant and equipment are stated at the lower of depreciated historical cost net of any disallowances or fair value, if impaired. The Duke Energy Registrants capitalize all construction-related direct labor and material costs, as well as indirect construction costs such as general engineering, taxes and financing costs. See “Allowance for Funds Used During Construction and Interest Capitalized” section below for information on capitalized financing costs. Costs of renewals and betterments that extend the useful life of property, plant and equipment are also capitalized. The cost of repairs, replacements and major maintenance projects that do not extend the useful life or increase the expected output of the asset are expensed as incurred. Depreciation is generally computed over the estimated useful life of the asset using the composite straight-line method. Depreciation studies are conducted periodically to update composite rates and are approved by state utility commissions and/or the FERC when required. The composite weighted average depreciation rates, excluding nuclear fuel, are included in the table that follows.
 Years Ended December 31,
 202520242023
Duke Energy 3.1 %3.0 %2.9 %
Duke Energy Carolinas 3.1 %3.1 %2.7 %
Progress Energy 3.2 %3.3 %3.3 %
Duke Energy Progress 3.2 %3.2 %3.1 %
Duke Energy Florida 3.2 %3.5 %3.5 %
Duke Energy Ohio 2.9 %2.9 %2.8 %
Duke Energy Indiana 4.3 %3.6 %3.6 %
Piedmont2.2 %2.2 %2.1 %
In general, when the Duke Energy Registrants retire regulated property, plant and equipment, the original cost plus the cost of retirement, less salvage value and any depreciation already recognized, is charged to accumulated depreciation. However, when it becomes probable the asset will be retired substantially in advance of its original expected useful life or is abandoned, the cost of the asset and the corresponding accumulated depreciation is recognized as a separate asset. If the asset is still in operation, the net amount is classified as Facilities to be retired, net on the Consolidated Balance Sheets. If the asset is no longer operating, the net amount is classified in Regulatory assets on the Consolidated Balance Sheets if deemed recoverable (see discussion of long-lived asset impairments above). The carrying value of the asset is based on historical cost if the Duke Energy Registrants are allowed to recover the remaining net book value and a return equal to at least the incremental borrowing rate. If not, an impairment is recognized to the extent the net book value of the asset exceeds the present value of future revenues discounted at the incremental borrowing rate.
When the Duke Energy Registrants sell entire regulated operating units, the original cost and accumulated depreciation and amortization balances are removed from Property, Plant and Equipment on the Consolidated Balance Sheets. Any gain or loss is recorded in earnings, unless otherwise required by the applicable regulatory body
Other Noncurrent Assets
Other Noncurrent Assets
Duke Energy, through a nonregulated subsidiary, was the winner of the Carolina Long Bay offshore wind auction in May 2022. The historical cost of the rights acquired from the auction, totaling $150 million is recorded in Other within Other noncurrent assets on Duke Energy's Consolidated Balance Sheets as of December 31, 2025, and 2024.
Leases
Leases
Duke Energy determines if an arrangement is a lease at contract inception based on whether the arrangement involves the use of a physically distinct identified asset and whether Duke Energy has the right to obtain substantially all of the economic benefits from the use of the asset throughout the period as well as the right to direct the use of the asset. As a policy election, Duke Energy does not evaluate arrangements with initial contract terms of less than one year as leases.
Operating leases are included in Operating lease ROU assets, net, Other current liabilities and Operating lease liabilities on the Consolidated Balance Sheets. Finance leases are included in Property, Plant and Equipment, Current maturities of long-term debt and Long-Term Debt on the Consolidated Balance Sheets.
For lessee and lessor arrangements, Duke Energy has elected a policy to not separate lease and non-lease components for all asset classes. For lessor arrangements, lease and non-lease components are only combined under one arrangement and accounted for under the lease accounting framework if the non-lease components are not the predominant component of the arrangement and the lease component would be classified as an operating lease.
Leases
Leases
Duke Energy determines if an arrangement is a lease at contract inception based on whether the arrangement involves the use of a physically distinct identified asset and whether Duke Energy has the right to obtain substantially all of the economic benefits from the use of the asset throughout the period as well as the right to direct the use of the asset. As a policy election, Duke Energy does not evaluate arrangements with initial contract terms of less than one year as leases.
Operating leases are included in Operating lease ROU assets, net, Other current liabilities and Operating lease liabilities on the Consolidated Balance Sheets. Finance leases are included in Property, Plant and Equipment, Current maturities of long-term debt and Long-Term Debt on the Consolidated Balance Sheets.
For lessee and lessor arrangements, Duke Energy has elected a policy to not separate lease and non-lease components for all asset classes. For lessor arrangements, lease and non-lease components are only combined under one arrangement and accounted for under the lease accounting framework if the non-lease components are not the predominant component of the arrangement and the lease component would be classified as an operating lease.
Nuclear Fuel
Nuclear Fuel
Nuclear fuel is classified as Property, Plant and Equipment on the Consolidated Balance Sheets.
Nuclear fuel in the front-end fuel processing phase is considered work in progress and not amortized until placed in service. Amortization of nuclear fuel is included within Fuel used in electric generation and purchased power on the Consolidated Statements of Operations. Amortization is recorded using the units-of-production method.
Allowance for Funds Used During Construction and Interest Capitalized
Allowance for Funds Used During Construction and Interest Capitalized
For regulated operations, the debt and equity costs of financing the construction of property, plant and equipment are reflected as AFUDC and capitalized as a component of the cost of property, plant and equipment. AFUDC equity is reported on the Consolidated Statements of Operations as non-cash income in Other income and expenses, net. AFUDC debt is reported as a non-cash offset to Interest Expense. After construction is completed, the Duke Energy Registrants are permitted to recover these costs through their inclusion in rate base and the corresponding subsequent depreciation or amortization of those regulated assets.
AFUDC equity, a permanent difference for income taxes, reduces the ETR when capitalized and increases the ETR when depreciated or amortized.
Asset Retirement Obligations
Asset Retirement Obligations
AROs are recognized for legal obligations associated with the retirement of property, plant and equipment. When recording an ARO, the present value of the projected liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made. The liability is accreted over time. For operating plants, the present value of the liability is added to the cost of the associated asset and depreciated over the remaining life of the asset. For retired plants, the present value of the liability is recorded as a regulatory asset unless determined not to be probable of recovery.
The present value of the initial obligation and subsequent updates are based on discounted cash flows, which include estimates regarding timing of future cash flows, selection of discount rates and cost escalation rates, among other factors. These estimates are subject to change. Depreciation expense is adjusted prospectively for any changes to the carrying amount of the associated asset. The Duke Energy Registrants receive amounts to fund the cost of the ARO for regulated operations through a combination of regulated revenues and earnings on the NDTF. As a result, amounts recovered in regulated revenues, earnings on the NDTF, accretion expense and depreciation of the associated asset are netted and deferred as a regulatory asset or liability.
Accounts Payable
Accounts Payable
Duke Energy has a voluntary supply chain finance program (the “program”) that allows Duke Energy suppliers, at their sole discretion, to sell their receivables from Duke Energy to a global financial institution at a rate that leverages Duke Energy’s credit rating and, which may result in favorable terms compared to the rate available to the supplier on their own credit rating. Suppliers participating in the program, determine at their sole discretion which invoices they will sell to the financial institution. Suppliers’ decisions on which invoices are sold do not impact Duke Energy’s payment terms, which are based on commercial terms negotiated between Duke Energy and the supplier regardless of program participation. The commercial terms negotiated between Duke Energy and its suppliers are consistent regardless of whether the supplier elects to participate in the program. Duke Energy does not issue any guarantees with respect to the program and does not participate in negotiations between suppliers and the financial institution. Duke Energy does not have an economic interest in the supplier’s decision to participate in the program and receives no interest, fees or other benefit from the financial institution based on supplier participation in the program.
Revenue Recognition
Revenue Recognition
Duke Energy recognizes revenue as customers obtain control of promised goods and services in an amount that reflects consideration expected in exchange for those goods or services. Generally, the delivery of electricity and natural gas results in the transfer of control to customers at the time the commodity is delivered and the amount of revenue recognized is equal to the amount billed to each customer, including estimated volumes delivered when billings have not yet occurred. See Note 19 for further information.
Alternative Revenue Programs
Duke Energy accounts for certain types of programs established by the regulators in the states in which it operates, including decoupling mechanisms, as alternative revenue programs. Alternative revenue programs are contracts between an entity and its regulator, not a contract between an entity and a customer. Revenue arising from alternative revenue programs is presented as Regulated electric revenues and Regulated natural gas revenues on the Consolidated Statements of Operations. Revenue from alternative revenue programs is recognized in the period they are earned (i.e., during the period of revenue shortfall or excess due to fluctuations in customer usage or when specific targets are met resulting in the achievement of performance incentives or penalties) and a regulatory asset or liability on the Consolidated Balance Sheets is established, which is subsequently billed or refunded to customers. Duke Energy recognizes revenue as alternative revenue programs for programs that have been authorized for rate recovery, are objectively determinable and probable of recovery, and are expected to be collected within 24 months. See Note 19 for disaggregated revenue information including revenue from contracts with customers and revenues recognized as alternative revenue programs.
Duke Energy recognizes revenue consistent with amounts billed under tariff offerings or at contractually agreed upon rates based on actual physical delivery of electric or natural gas service, including estimated volumes delivered when billings have not yet occurred. As such, the majority of Duke Energy’s revenues have fixed pricing based on the contractual terms of the published tariffs. Absent decoupling mechanisms, the variability in expected cash flows of the majority of Duke Energy's revenue is attributable to the customer’s volumetric demand and ultimate quantities of energy or natural gas supplied and used during the billing period. The stand-alone selling price of related sales are designed to support recovery of prudently incurred costs and an appropriate return on invested assets and are primarily governed by published tariff rates or contractual agreements approved by relevant regulatory bodies. As described in Note 1, certain excise taxes and franchise fees levied by state or local governments are required to be paid even if not collected from the customer. These taxes are recognized on a gross basis as part of revenues. Duke Energy elects to account for all other taxes net of revenues.
Performance obligations are satisfied over time as energy or natural gas is delivered and consumed with billings generally occurring monthly and related payments due within 30 days, depending on regulatory requirements. In no event does the timing between payment and delivery of the goods and services exceed one year. Using this output method for revenue recognition provides a faithful depiction of the transfer of electric and natural gas service as customers obtain control of the commodity and benefit from its use at delivery. Additionally, Duke Energy has an enforceable right to consideration for energy or natural gas delivered at any discrete point in time and will recognize revenue at an amount that reflects the consideration to which Duke Energy is entitled for the energy or natural gas delivered.
As described above, the majority of Duke Energy’s tariff revenues are at will and, as such, related contracts with customers have an expected duration of one year or less and will not have future performance obligations for disclosure. Additionally, other long-term revenue streams, including wholesale contracts, generally provide services that are part of a single performance obligation, the delivery of electricity or natural gas. As such, other than material fixed consideration under long-term contracts, related disclosures for future performance obligations are also not applicable.
Derivatives and Hedging
Derivatives and Hedging
Derivative and non-derivative instruments may be used in connection with commodity price and interest rate activities, including swaps, futures, forwards and options. All derivative instruments, except those that qualify for the NPNS exception, are recorded on the Consolidated Balance Sheets at fair value. Qualifying derivative instruments may be designated as either cash flow hedges or fair value hedges. Other derivative instruments (undesignated contracts) either have not been designated or do not qualify as hedges. The effective portion of the change in the fair value of cash flow hedges is recorded in AOCI. The effective portion of the change in the fair value of a fair value hedge is offset in net income by changes in the hedged item. For activity subject to regulatory accounting, gains and losses on derivative contracts are reflected as regulatory assets or liabilities and not as other comprehensive income or current period income. As a result, changes in fair value of these derivatives have no immediate earnings impact.
Formal documentation, including transaction type and risk management strategy, is maintained for all contracts accounted for as a hedge. At inception and at least every three months thereafter, the hedge contract is assessed to see if it is highly effective in offsetting changes in cash flows or fair values of hedged items.
Captive Insurance Reserves
Captive Insurance Reserves
Duke Energy has captive insurance subsidiaries that provide coverage, on an indemnity basis, to the Subsidiary Registrants as well as certain third parties, on a limited basis, for financial losses, primarily related to property, workers’ compensation and general liability. Liabilities include provisions for estimated losses incurred but not reported (IBNR), as well as estimated provisions for known claims. IBNR reserve estimates are primarily based upon historical loss experience, industry data and other actuarial assumptions. Reserve estimates are adjusted in future periods as actual losses differ from experience.
Duke Energy, through its captive insurance entities, also has reinsurance coverage with third parties for certain losses above a per occurrence and/or aggregate retention. Receivables for reinsurance coverage are recognized when realization is deemed probable.
Preferred Stock
Preferred Stock
Preferred stock is reviewed to determine the appropriate balance sheet classification and embedded features, such as call options, are evaluated to determine if they should be bifurcated and accounted for separately. Costs directly related to the issuance of preferred stock are recorded as a reduction of the proceeds received. The liability for the dividend is recognized when declared. The accumulated dividends on the cumulative preferred stock is recognized to net income available to Duke Energy Corporation in the EPS calculation.
Loss Contingencies and Environmental Liabilities
Loss Contingencies and Environmental Liabilities
Contingent losses are recorded when it is probable a loss has occurred and the loss can be reasonably estimated. When a range of the probable loss exists and no amount within the range is a better estimate than any other amount, the minimum amount in the range is recorded. Unless otherwise required by GAAP, legal fees are expensed as incurred.
Environmental liabilities are recorded on an undiscounted basis when environmental remediation or other liabilities become probable and can be reasonably estimated. Environmental expenditures related to past operations that do not generate current or future revenues are expensed. Environmental expenditures related to operations that generate current or future revenues are expensed or capitalized, as appropriate. Certain environmental expenditures receive regulatory accounting treatment and are recorded as regulatory assets.
Severance and Special Termination Benefits
Severance and Special Termination Benefits
Duke Energy maintains severance plans for the general employee population under which, in general, the longer a terminated employee worked prior to termination the greater the amount of severance benefits provided. A liability for involuntary severance is recorded once an involuntary severance plan is committed to by management if involuntary severances are probable and can be reasonably estimated. For involuntary severance benefits incremental to its ongoing severance plan benefits, the fair value of the obligation is expensed at the communication date if there are no future service requirements or over the required future service period. Duke Energy also offers special termination benefits under voluntary severance programs. Special termination benefits are recorded immediately upon employee acceptance absent a significant retention period. Otherwise, the cost is recorded over the remaining service period. Employee acceptance of voluntary severance benefits is determined by management based on the facts and circumstances of the benefits being offered.
Guarantees
Guarantees
If necessary, liabilities are recognized at the time of issuance or material modification of a guarantee for the estimated fair value of the obligation it assumes. Fair value is estimated using a probability weighted approach. The obligation is reduced over the term of the guarantee or related contract in a systematic and rational method as risk is reduced. Duke Energy recognizes a liability for the best estimate of its loss due to the nonperformance of the guaranteed party. This liability is recognized at the inception of a guarantee and is updated periodically.
Income Taxes
Income Taxes
Duke Energy and its subsidiaries file a consolidated federal income tax return and other state and foreign jurisdictional returns. The Subsidiary Registrants are parties to a tax-sharing agreement with Duke Energy. Income taxes recorded represent amounts the Subsidiary Registrants would incur as separate C-Corporations. Deferred income taxes have been provided for temporary differences between GAAP and tax bases of assets and liabilities because the differences create taxable or tax-deductible amounts for future periods. ITCs associated with regulated operations are deferred and amortized as a reduction of income tax expense over the estimated useful lives of the related properties. PTCs associated with regulated operations reduce income tax expense or are deferred and amortized as a reduction of income tax expense over a period of time that is agreed upon by the regulatory authorities and the Subsidiary Registrants.
Accumulated deferred income taxes are valued using the enacted tax rate expected to apply to taxable income in the periods in which the deferred tax asset or liability is expected to be settled or realized. In the event of a change in tax rates, deferred tax assets and liabilities are remeasured as of the enactment date of the new rate. To the extent that the change in the value of the deferred tax represents an obligation to customers, the impact of the remeasurement is deferred to a regulatory liability. Remaining impacts are recorded in income from continuing operations. Duke Energy's results of operations could be impacted if the estimate of the tax effect of reversing temporary differences is not reflective of actual outcomes, is modified to reflect new developments or interpretations of the tax law, revised to incorporate new accounting principles, or changes in the expected timing or manner of a reversal.
Tax-related interest and penalties are recorded in Interest Expense and Other income and expenses, net on the Consolidated Statements of Operations.
Excise Taxes
Excise Taxes
Certain excise taxes levied by state or local governments are required to be paid even if not collected from the customer. These taxes are recognized on a gross basis. Taxes for which Duke Energy operates merely as a collection agent for the state and local government are accounted for on a net basis.
Dividend Restrictions and Unappropriated Retained Earnings
Dividend Restrictions and Unappropriated Retained Earnings
Duke Energy does not have any current legal, regulatory or other restrictions on paying common stock dividends to shareholders. However, if Duke Energy were to defer dividend payments on the preferred stock, the declaration of common stock dividends would be prohibited. See Note 20 for more information. Additionally, as further described in Note 4, Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio, Duke Energy Indiana and Piedmont have restrictions on paying dividends or otherwise advancing funds to Duke Energy due to conditions established by regulators in conjunction with merger transaction approvals.
New Accounting Standard
New Accounting Standards
Other than implementation of the enhanced income tax disclosure requirements as described in Note 24, no new accounting standards were adopted by any of the Duke Energy Registrants in 2025.
The following new accounting standard has been issued but not yet adopted by the Duke Energy Registrants as of December 31, 2025.
Disaggregation of Income Statement Expenses. In November 2024, the FASB issued new accounting guidance that requires disclosure of disaggregated information for certain cost and expense categories. This new guidance does not change the expense captions presented on the Consolidated Statements of Operations but requires disaggregation of certain expense captions into specified categories in disclosures within the notes to the financial statements. For Duke Energy Registrants, the amendments will be effective for fiscal years beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027, with early adoption permitted. Duke Energy is currently assessing implementation of this guidance on the financial statement disclosures and expects it will have no impact on the results of operations, cash flows or financial condition.
Earnings Per Share Basic EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the diluted weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other agreements to issue common stock, such as convertible debt or equity forward sale agreements, are exercised or settled. Duke Energy applies the if-converted method for calculating any potential dilutive effect of the conversion of the outstanding convertible notes on diluted EPS, if applicable.
v3.25.4
Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2025
Accounting Policies [Abstract]  
Schedule of Current and Noncurrent Assets and Liabilities
The following table provides a description of amounts included in Other within Current Assets or Current Liabilities that exceed 5% of total Current Assets or Current Liabilities on the Duke Energy Registrants' Consolidated Balance Sheets at either December 31, 2025, or 2024.
December 31,
(in millions)Location20252024
Duke Energy Carolinas
Accrued compensation Current Liabilities$302 $234 
Progress Energy  
Customer deposits/Collateral liabilitiesCurrent Liabilities$293 $281 
Duke Energy Progress  
Accrued compensationCurrent Liabilities$143 $114 
Duke Energy Florida  
Tax receivables
Current Assets
$12 $166 
Customer deposits/Collateral liabilities
Current Liabilities191 164 
Duke Energy Indiana  
Customer advances
Current Liabilities
$117 $100 
Schedule of Cash and Cash Equivalents The following table presents the components of cash, cash equivalents and restricted cash included on the Consolidated Balance Sheets.
December 31, 2025December 31, 2024
DukeDukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyDukeEnergyProgressEnergyEnergy
(in millions)
EnergyCarolinasEnergyProgressFloridaEnergyCarolinasEnergyProgressFlorida
Current Assets
Cash and cash equivalents$245 $3 $54 $16 $21 $314 $6 $73 $24 $33 
Other84 12 71 38 34 84 9 76 40 35 
Other Noncurrent Assets
Other34 7 14 7 7 20 1 11 5 7 
Total cash, cash equivalents and restricted cash$363 $22 $139 $61 $62 $418 $16 $160 $69 $75 
Restrictions on Cash and Cash Equivalents The following table presents the components of cash, cash equivalents and restricted cash included on the Consolidated Balance Sheets.
December 31, 2025December 31, 2024
DukeDukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyDukeEnergyProgressEnergyEnergy
(in millions)
EnergyCarolinasEnergyProgressFloridaEnergyCarolinasEnergyProgressFlorida
Current Assets
Cash and cash equivalents$245 $3 $54 $16 $21 $314 $6 $73 $24 $33 
Other84 12 71 38 34 84 9 76 40 35 
Other Noncurrent Assets
Other34 7 14 7 7 20 1 11 5 7 
Total cash, cash equivalents and restricted cash$363 $22 $139 $61 $62 $418 $16 $160 $69 $75 
Components of Inventory The components of inventory are presented in the tables below.
 December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Materials and supplies $3,542 $1,157 $1,789 $1,109 $680 $155 $398 $10 
Coal 715 328 235 155 80 21 131 — 
Natural gas, oil and other 312 45 186 99 87 11 2 67 
Total inventory $4,569 $1,530 $2,210 $1,363 $847 $187 $531 $77 
 December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Materials and supplies $3,386 $1,150 $1,649 $1,074 $576 $149 $389 $11 
Coal801 341 241 164 77 23 196 — 
Natural gas, oil and other309 45 196 103 92 11 1 55 
Total inventory $4,496 $1,536 $2,086 $1,341 $745 $183 $586 $66 
Schedule of Property, Plant and Equipment The composite weighted average depreciation rates, excluding nuclear fuel, are included in the table that follows.
 Years Ended December 31,
 202520242023
Duke Energy 3.1 %3.0 %2.9 %
Duke Energy Carolinas 3.1 %3.1 %2.7 %
Progress Energy 3.2 %3.3 %3.3 %
Duke Energy Progress 3.2 %3.2 %3.1 %
Duke Energy Florida 3.2 %3.5 %3.5 %
Duke Energy Ohio 2.9 %2.9 %2.8 %
Duke Energy Indiana 4.3 %3.6 %3.6 %
Piedmont2.2 %2.2 %2.1 %
The following tables summarize the property, plant and equipment for Duke Energy and its subsidiary registrants.
December 31, 2025
Average
RemainingDukeDukeDukeDukeDuke
Useful LifeDukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)(Years)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Land $2,667 $644 $1,226 $557 $669 $289 $157 $326 
Plant – Regulated
Electric generation, distribution and transmission 38145,947 52,259 66,751 37,561 29,190 7,945 18,992 — 
Natural gas transmission and distribution 5814,201 — — — — 4,529 — 9,672 
Other buildings and improvements 403,214 1,280 854 423 431 437 381 262 
Nuclear fuel 3,683 2,128 1,555 1,555 — — — — 
Equipment 114,193 1,132 1,456 852 604 555 540 131 
Construction in process 10,075 3,708 4,390 2,761 1,629 394 884 408 
Other116,429 1,362 2,115 1,466 637 478 287 526 
Total property, plant and equipment(a)
190,409 62,513 78,347 45,175 33,160 14,627 21,241 11,325 
Total accumulated depreciation – regulated(b)(c)
(59,441)(20,658)(25,425)(16,980)(8,437)(3,812)(7,492)(2,168)
Total accumulated depreciation – other(d)
(1,009)— — — — — — — 
Total net property, plant and equipment $129,959 $41,855 $52,922 $28,195 $24,723 $10,815 $13,749 $9,157 
(a)    Includes finance leases of $682 million, $349 million, $605 million, $478 million, $127 million and $13 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $208 million, $203 million and $5 million, respectively, of accumulated amortization of finance leases.
(b)    Includes $1,886 million, $1,064 million, $822 million and $822 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively.
(c)    Includes accumulated amortization of finance leases of $98 million and $5 million at Duke Energy Carolinas and Duke Energy Indiana, respectively.
(d)    Includes accumulated amortization of finance leases of $35 million at Duke Energy.
December 31, 2024
Average
RemainingDukeDukeDukeDukeDuke
Useful LifeDukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)(Years)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Land $2,503 $617 $1,134 $535 $599 $258 $144 $325 
Plant – Regulated
Electric generation, distribution and transmission 37137,836 49,547 62,351 35,633 26,718 7,634 18,304 — 
Natural gas transmission and distribution 5713,482 — — — — 4,255 — 9,227 
Other buildings and improvements 412,948 1,256 698 391 307 418 372 204 
Nuclear fuel 3,518 2,003 1,515 1,515 — — — — 
Equipment 133,850 997 1,252 753 499 542 490 157 
Construction in process 7,756 2,735 3,657 1,884 1,773 385 406 311 
Other106,844 1,227 1,953 1,349 594 426 254 488 
Total property, plant and equipment(a)
178,737 58,382 72,560 42,060 30,490 13,918 19,970 10,712 
Total accumulated depreciation – regulated(b)(c)
(55,143)(19,090)(23,586)(15,930)(7,650)(3,674)(6,848)(2,041)
Total accumulated depreciation – other(d)
(1,968)— — — — — — — 
Total net property, plant and equipment $121,626 $39,292 $48,974 $26,130 $22,840 $10,244 $13,122 $8,671 
(a)    Includes finance leases of $670 million, $336 million, $620 million, $512 million, $108 million, and $10 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy and Duke Energy Progress amounts are net of $159 million of accumulated amortization of finance leases.
(b)    Includes $1,824 million, $1,010 million, $814 million and $814 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively.
(c)    Includes accumulated amortization of finance leases of $84 million and $4 million at Duke Energy Carolinas and Duke Energy Indiana, respectively.
(d)    Includes accumulated amortization of finance leases of $25 million at Duke Energy.
Schedule of Accounts Payable and Supplier Invoices Sold
The following table presents the amounts included within Accounts payable on the Consolidated Balance Sheets sold to the financial institution by our suppliers and the supplier invoices sold to the financial institution under the program included within Net cash provided by operating activities on the Consolidated Statements of Cash Flows as of December 31, 2025, and December 31, 2024.
 For the Years Ended December 31, 2024 and 2025
Duke
(in millions) EnergyPiedmont
Confirmed obligations outstanding at December 31, 2023
$50 $47 
Invoices confirmed during the period
156 152 
Confirmed invoices paid during the period
(193)(187)
Confirmed obligations outstanding at December 31, 2024
$13 $12 
Invoices confirmed during the period
71 69 
Confirmed invoices paid during the period
(61)(58)
Confirmed obligations outstanding at December 31, 2025
$23 $23 
Schedule of Excise Taxes Excise taxes accounted for on a gross basis within both Operating Revenues and Property and other taxes on the Consolidated Statements of Operations were as follows.
Years Ended December 31,
(in millions) 202520242023
Duke Energy $447 $423 $458 
Duke Energy Carolinas 27 31 27 
Progress Energy 307 285 322 
Duke Energy Progress 8 9 5 
Duke Energy Florida 299 276 317 
Duke Energy Ohio 110 105 106 
Duke Energy Indiana — — 1 
Piedmont3 2 2 
v3.25.4
Dispositions (Tables)
 12 Months Ended
Dec. 31, 2025
Discontinued Operations and Disposal Groups [Abstract]  
Disposal Groups, Including Discontinued Operations
The following table presents the carrying values of the major classes of Assets held for sale and Liabilities associated with assets held for sale included in Duke Energy's and Piedmont's Consolidated Balance Sheets.
December 31, 2025
Piedmont
Duke Energy
(in millions)
Piedmont Tennessee Disposal Group
Piedmont Tennessee Disposal Group
Commercial Renewables Disposal Groups
Total
Current Assets Held for Sale
Receivables, net$82 $82 $— $82 
Inventory12 12 — 12 
Other15 15 — 15 
Total current assets held for sale109 109 — 109 
Noncurrent Assets Held for Sale
Property, Plant and Equipment
Cost2,219 2,219 — 2,219 
Accumulated depreciation and amortization(406)(406)— (406)
Net property, plant and equipment1,813 1,813 — 1,813 
Goodwill
10 294 — 294 
Regulatory assets
41 41 — 41 
Total noncurrent assets held for sale
1,864 2,148 — 2,148 
Total Assets Held for Sale$1,973 $2,257 $— $2,257 
Current Liabilities Associated with Assets Held for Sale
Accounts payable$58 $58 $18 $76 
Other8 8 — 8 
Total current liabilities associated with assets held for sale66 66 18 84 
Noncurrent Liabilities Associated with Assets Held for Sale
Asset retirement obligations4 4 — 4 
Regulatory liabilities
161 161 — 161 
Other5 5 — 5 
Total noncurrent liabilities associated with assets held for sale
170 170 — 170 
Total Liabilities Associated with Assets Held for Sale$236 $236 $18 $254 
December 31, 2024
Piedmont
Duke Energy
(in millions)
Piedmont Tennessee Disposal Group
Piedmont Tennessee Disposal Group
Commercial Renewables Disposal Groups
Total
Current Assets Held for Sale
Receivables, net$64 $64 $— $64 
Inventory12 12 — 12 
Other16 16 4 20 
Total current assets held for sale92 92 4 96 
Noncurrent Assets Held for Sale
Property, Plant and Equipment
Cost2,069 2,069 109 2,178 
Accumulated depreciation and amortization(392)(392)(24)(416)
Net property, plant and equipment1,677 1,677 85 1,762 
Goodwill
10 294 — 294 
Regulatory assets
35 35 — 35 
Operating lease right-of-use assets, net— — 4 4 
Total noncurrent assets held for sale
1,722 2,006 89 2,095 
Total Assets Held for Sale$1,814 $2,098 $93 $2,191 
Current Liabilities Associated with Assets Held for Sale
Accounts payable$42 $42 $19 $61 
Taxes accrued1 1 1 2 
Current maturities of long-term debt
— — 43 43 
Unrealized losses on commodity hedges
— — 13 13 
Other9 9 4 13 
Total current liabilities associated with assets held for sale52 52 80 132 
Noncurrent Liabilities Associated with Assets Held for Sale
Asset retirement obligations4 4 5 9 
Regulatory liabilities
173 173 — 173 
Operating lease liabilities— — 5 5 
Unrealized losses on commodity hedges
— — 66 66 
Other5 5 13 18 
Total noncurrent liabilities associated with assets held for sale
182 182 89 271 
Total Liabilities Associated with Assets Held for Sale$234 $234 $169 $403 
The following table summarizes the Income (Loss) from Discontinued Operations, net of tax recorded on Duke Energy's Consolidated Statements of Operations:
Years Ended December 31,
(in millions)202520242023
Commercial Renewables Disposal Groups$(1)$12 $(1,457)
Other2 (2)2 
Income (Loss) from Discontinued Operations, net of tax
$1 $10 $(1,455)
The following table presents the results of the Commercial Renewables Disposal Groups, which are included in Income (Loss) from Discontinued Operations, net of tax in Duke Energy's Consolidated Statements of Operations.
Years Ended December 31,
(in millions)202520242023
Operating revenues$4 $4 $330 
Operation, maintenance and other122302
Property and other taxes— 245
Other income and expenses, net— — (8)
Interest expense— 465
Loss on disposal4 14 1,725 
Loss before income taxes(1)(38)(1,815)
Income tax benefit— (50)(358)
(Loss) Income from discontinued operations
$(1)$12 $(1,457)
Add: Net (income) loss attributable to noncontrolling interest included in discontinued operations
— (3)64 
Net (loss) income from discontinued operations attributable to Duke Energy Corporation
$(1)$9 $(1,393)
The following table summarizes Duke Energy's cash flows from discontinued operations related to the Commercial Renewables Disposal Groups.
Years Ended December 31,
(in millions)202520242023
Cash flows provided by (used in):
Operating activities$(3)$7 $607 
Investing activities— (13)122 
v3.25.4
Business Segments (Tables)
 12 Months Ended
Dec. 31, 2025
Segment Reporting Information [Line Items]  
Business Segment Data
Business segment information is presented in the following tables.
Year Ended December 31, 2025
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues
$29,297 $2,912 $32,209 $28 $— $32,237 
Intersegment revenues
60 91 151 137 (288)— 
Total operating revenues
$29,357 $3,003 $32,360 $165 $(288)$32,237 
Less:
Fuel used in electric generation and purchased power
$8,138 $— $8,138 $— $(80)$8,058 
Cost of natural gas
— 983 983 — — 983 
Operation, maintenance and other6,414 518 6,932 (35)(199)6,698 
Depreciation and amortization5,605 435 6,040 312 (28)6,324 
Property and other taxes1,418 164 1,582 14 1 1,597 
Impairment of assets and other charges(9)— (9)5 — (4)
Interest expense2,132 267 2,399 1,317 (82)3,634 
Income tax expense (benefit)862 146 1,008 (366)— 642 
Other Segment Items
Noncontrolling interests(a)
104 (1)103 — — 103 
Preferred dividends— — — 56 — 56 
Add: Equity in earnings of unconsolidated affiliates
— 15 15 36 — 51 
Add: Other(b)
644 53 697 117 (100)714 
Segment income (loss)
$5,337 $559 $5,896 $(985)$— $4,911 
Discontinued Operations
1 
Net income available to Duke Energy Corporation Common Stockholders
$4,912 
Add back: Net income attributable to noncontrolling interest
103 
Add back: Preferred dividends
56 
Net Income
$5,071 
Capital investments expenditures and acquisitions$12,553 $1,114 $13,667 $335 $— $14,002 
Segment assets(c)
172,427 18,989 191,416 4,320 — 195,736 
(a)    Net income (loss) attributable to NCI related to continuing operations.
(b)    Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net.
(c)    GU&I includes Assets held for sale balances related to the Piedmont Tennessee Disposal Group. Refer to Note 2 for further information.
Year Ended December 31, 2024
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues
$28,020 $2,299 $30,319 $38 $— $30,357 
Intersegment revenues
73 91 164 119 (283)— 
Total operating revenues
$28,093 $2,390 $30,483 $157 $(283)$30,357 
Less:
Fuel used in electric generation and purchased power
$9,285 $— $9,285 $— $(79)$9,206 
Cost of natural gas
— 565 565 — — 565 
Operation, maintenance and other
5,185 478 5,663 (79)(195)5,389 
Depreciation and amortization5,128 400 5,528 293 (28)5,793 
Property and other taxes
1,305 149 1,454 12 — 1,466 
Impairment of assets and other charges
37 — 37 1 — 38 
Interest expense2,006 256 2,262 1,245 (123)3,384 
Income tax expense (benefit)820 99 919 (329)— 590 
Other Segment Items
Noncontrolling interests(a)
88 (1)87 — — 87 
Preferred dividends— — — 106 — 106 
Preferred redemption costs
— — — 16 — 16 
Add: Equity in (losses) earnings of unconsolidated affiliates
(11)(48)(59)50 — (9)
Add: Other(b)
542 58 600 229 (142)687 
Segment income (loss)(c)(d)(e)
$4,770 $454 $5,224 $(829)$— $4,395 
Discontinued operations7 
Net income available to Duke Energy Corporation Common Stockholders
$4,402 
Add back: Net income attributable to noncontrolling interest
90 
Add back: Preferred dividends
106 
Add back: Preferred redemption costs
$16 
Net Income
$4,614 
Capital investments expenditures and acquisitions
$10,689 $1,313 $12,002 $261 $— $12,263 
Segment assets(f)
164,010 18,131 182,141 4,202 — 186,343 
(a)    Net income (loss) attributable to NCI related to continuing operations.
(b)    Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net.
(c)    EU&I includes the following in the referenced captions on the Consolidated Statements of Operations:
•$42 million recorded within Impairment of assets and other charges, $2 million within Operation, maintenance and other, and an $11 million reduction within Interest Expense related to South Carolinas rate case orders for Duke Energy Carolinas and Duke Energy Progress. See Note 4 for further information.
•$29 million recorded as a reduction of Operating revenues and $4 million as a reduction within Noncontrolling interests related to a Duke Energy Indiana regulatory liability associated with certain employee post-retirement benefits. See Note 4 for further information.
•$17 million recorded as a reduction of Operating revenues related to nonrecurring customer billing adjustments as a result of implementation of a new customer system.
•$15 million recorded within Equity in (losses) earnings of unconsolidated affiliates, primarily related to impairments for certain joint venture electric transmission projects, and $4 million within Gains on sales of other assets and other, net.
(d)    GU&I includes $1 million recorded within Operation, maintenance and other and $3 million as a charge within Other income and expenses on the Consolidated Statements of Operations related to nonrecurring customer billing adjustments as a result of implementation of a new customer system. Additionally, GU&I includes $54 million recorded within Equity in (losses) earnings of unconsolidated affiliates on the Consolidated Statements of Operations related to impairments for certain renewable natural gas investments. See Note 13 for further information.
(e)    Other includes $16 million recorded as Preferred Redemption Costs on the Consolidated Statements of Operations related to the redemption of Series B Preferred Stock. See Note 20 for further information. Additionally, Other includes $23 million recorded within Operation, maintenance and other on the Consolidated Statements of Operations related to an insurance deductible for Hurricane Helene property losses.
(f)    GU&I includes Assets held for sale balances related to the Piedmont Tennessee Disposal Group. Refer to Note 2 for further information.
Year Ended December 31, 2023
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues
$26,846 $2,177 $29,023 $37 $— $29,060 
Intersegment revenues
75 89 164 97 (261)— 
Total operating revenues
$26,921 $2,266 $29,187 $134 $(261)$29,060 
Less:
Fuel used in electric generation and purchased power
$9,164 $— $9,164 $— $(78)$9,086 
Cost of natural gas
— 593 593 — — 593 
Operation, maintenance and other
5,309 455 5,764 36 (175)5,625 
Depreciation and amortization4,684 349 5,033 248 (28)5,253 
Property and other taxes
1,320 129 1,449 (49)— 1,400 
Impairment of assets and other charges
75 (4)71 14 — 85 
Interest expense1,850 217 2,067 1,097 (150)3,014 
Income tax expense (benefit)742 116 858 (420)— 438 
Other Segment Items
Noncontrolling interests(a)
99 (2)97 — — 97 
Preferred dividends— — — 106 — 106 
Add: Equity in earnings of unconsolidated affiliates7 40 47 66 — 113 
Add: Other(b)
538 66 604 216 (170)650 
Segment income (loss)(c)(d)
$4,223 $519 $4,742 $(616)$— $4,126 
Discontinued operations
(1,391)
Net income available to Duke Energy Corporation Common Stockholders
$2,735 
Add back: Net income attributable to noncontrolling interest
33 
Add back: Preferred dividends
106 
Net Income
$2,874 
Capital investments expenditures and acquisitions(e)
$10,135 $1,492 $11,627 $995 $— $12,622 
Segment assets(f)
155,449 17,349 172,798 4,095 — 176,893 
(a)    Net income (loss) attributable to NCI related to continuing operations.
(b)    Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net.
(c)    EU&I includes $35 million recorded within Impairment of assets and other charges and $8 million within Operation, maintenance and other primarily related to the North Carolina rate case order on Duke Energy Carolinas' Consolidated Statements of Operations; it also includes $33 million recorded within Impairment of assets and other charges and $8 million within Operation, maintenance and other primarily related to the North Carolina rate case order on Duke Energy Progress' Consolidated Statements of Operations. See Note 4 for additional information.
(d)    Other includes $110 million recorded within Operation, maintenance and other and $14 million within Impairment of assets and other charges primarily related to strategic repositioning as the Company transitions to a fully regulated utility on the Consolidated Statements of Operations. See Note 21 for additional information.
(e)    Other includes capital investments expenditures and acquisitions related to the Commercial Renewables Disposal Groups.
(f)    GU&I includes Assets held for sale balances related to the Piedmont Tennessee Disposal Group and Other includes Assets held for sale balances related to the Commercial Renewables Disposal Groups. See Note 2 for further information.
Schedule of Revenue, By Products and Services
Products and Services
The following table summarizes revenues of the reportable segments by type.
RetailWholesaleRetailTotal
(in millions)ElectricElectricNatural GasOther Revenues
2025
Electric Utilities and Infrastructure$25,504 $2,423 $— $1,430 $29,357 
Gas Utilities and Infrastructure— — 2,782 221 3,003 
Total Reportable Segments$25,504 $2,423 $2,782 $1,651 $32,360 
2024
Electric Utilities and Infrastructure$24,593 $2,219 $— $1,281 $28,093 
Gas Utilities and Infrastructure— — 2,320 70 2,390 
Total Reportable Segments$24,593 $2,219 $2,320 $1,351 $30,483 
2023
Electric Utilities and Infrastructure$23,484 $2,193 $— $1,244 $26,921 
Gas Utilities and Infrastructure— — 2,199 67 2,266 
Total Reportable Segments$23,484 $2,193 $2,199 $1,311 $29,187 
Duke Energy Carolinas  
Segment Reporting Information [Line Items]  
Business Segment Data
Duke Energy Carolinas has one reportable segment, EU&I.
EU&I generates, distributes and sells electricity in North Carolina and South Carolina. EU&I conducts operations primarily through Duke Energy Carolinas. The remainder of Duke Energy Carolinas' operations is presented as Other.
Year Ended December 31, 2025
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$9,713 $— $9,713 
Less:
Fuel used in electric generation and purchased power
$2,649 $— $2,649 
Operation, maintenance and other
1,959 43 2,002 
Depreciation and amortization1,903 — 1,903 
Property and other taxes
349 — 349 
Impairment of assets and other charges
(11)— (11)
Interest expense783 — 783 
Income tax expense (benefit)205 (11)194 
Add: Other segment items(a)
267 (3)264 
Segment income (loss) / Net income
$2,143 $(35)$2,108 
Capital expenditures$4,477 $— $4,477 
Segment assets
58,775 400 59,175 
Year Ended December 31, 2024
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$9,718 $— $9,718 
Less:
Fuel used in electric generation and purchased power
$3,251 $— $3,251 
Operation, maintenance and other
1,710 30 1,740 
Depreciation and amortization1,768 — 1,768 
Property and other taxes
346 — 346 
Impairment of assets and other charges
31 — 31 
Interest expense722 — 722 
Income tax expense (benefit)233 (7)226 
Add: Other segment items(a)
252 (3)249 
Segment income (loss) / Net income
$1,909 $(26)$1,883 
Capital expenditures
$3,966 $— $3,966 
Segment assets
54,782 223 55,005 
Year Ended December 31, 2023
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$8,288 $— $8,288 
Less:
Fuel used in electric generation and purchased power
$2,524 $— $2,524 
Operation, maintenance and other
1,689 85 1,774 
Depreciation and amortization1,593 — 1,593 
Property and other taxes
320 — 320 
Impairment of assets and other charges
44 — 44 
Interest expense686 — 686 
Income tax expense (benefit)162 (21)141 
Add: Other segment items(a)
267 (3)264 
Segment income (loss) / Net income
$1,537 $(67)$1,470 
Capital expenditures
$3,733 $— $3,733 
Segment assets
51,908 202 52,110 
(a)    Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Progress Energy  
Segment Reporting Information [Line Items]  
Business Segment Data
Progress Energy has one reportable segment, EU&I.
EU&I generates, distributes and sells electricity in North Carolina, South Carolina and Florida. EU&I conducts operations primarily through its wholly owned subsidiaries, Duke Energy Progress and Duke Energy Florida. The remainder of Progress Energy's operations is presented as Other.
Year Ended December 31, 2025
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$14,491 $18 $14,509 
Less:
Fuel used in electric generation and purchased power
$4,267 $— $4,267 
Operation, maintenance and other
3,280 55 3,335 
Depreciation and amortization2,543 — 2,543 
Property and other taxes
658 (1)657 
Impairment of assets and other charges
2 — 2 
Interest expense1,005 114 1,119 
Income tax expense (benefit)523 (38)485 
Add: Other segment items(a)
291 23 314 
Segment income (loss) / Net income
$2,504 $(89)$2,415 
Capital expenditures$6,125 $— $6,125 
Segment assets
71,685 4,153 75,838 
Year Ended December 31, 2024
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$13,612 $21 $13,633 
Less:
Fuel used in electric generation and purchased power
$4,755 $— $4,755 
Operation, maintenance and other
2,413 50 2,463 
Depreciation and amortization2,393 — 2,393 
Property and other taxes
617 — 617 
Impairment of assets and other charges
6 — 6 
Interest expense949 115 1,064 
Income tax expense (benefit)465 (39)426 
Add: Other segment items(a)
224 38 262 
Segment income (loss) / Net income
$2,238 $(67)$2,171 
Capital expenditures
$5,252 $— $5,252 
Segment assets
67,951 3,685 71,636 
Year Ended December 31, 2023
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$13,524 $20 $13,544 
Less:
Fuel used in electric generation and purchased power
$5,026 $— $5,026 
Operation, maintenance and other
2,554 82 2,636 
Depreciation and amortization2,151 — 2,151 
Property and other taxes
644 — 644 
Impairment of assets and other charges
28 — 28 
Interest expense840 114 954 
Income tax expense (benefit)426 (49)377 
Add: Other segment items(a)
210 18 228 
Segment income (loss) / Net income
$2,065 $(109)$1,956 
Capital expenditures
$4,917 $— $4,917 
Segment assets
63,182 3,912 67,094 
(a)    Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Progress  
Segment Reporting Information [Line Items]  
Business Segment Data
Duke Energy Progress has one reportable segment, EU&I.
EU&I generates, distributes and sells electricity in North Carolina and South Carolina. EU&I conducts operations primarily through Duke Energy Progress. The remainder of Duke Energy Progress' operations is presented as Other.
Year Ended December 31, 2025
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$7,386 $— $7,386 
Less:
Fuel used in electric generation and purchased power
$2,518 $— $2,518 
Operation, maintenance and other
1,431 24 1,455 
Depreciation and amortization1,406 — 1,406 
Property and other taxes
172 — 172 
Impairment of assets and other charges
2 — 2 
Interest expense526 — 526 
Income tax expense (benefit)229 (6)223 
Add: Other segment items(a)
200 (2)198 
Segment income (loss) / Net income
$1,302 $(20)$1,282 
Capital expenditures$3,428 $— $3,428 
Segment assets
42,163 364 42,527 
Year Ended December 31, 2024
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$7,017 $— $7,017 
Less:
Fuel used in electric generation and purchased power
$2,409 $— $2,409 
Operation, maintenance and other
1,370 18 1,388 
Depreciation and amortization1,336 — 1,336 
Property and other taxes
177 — 177 
Impairment of assets and other charges
6 — 6 
Interest expense492 1 493 
Income tax expense (benefit)194 (5)189 
Add: Other segment items(a)
138 7 145 
Segment income (loss) / Net income
$1,171 $(7)$1,164 
Capital expenditures
$2,803 $— $2,803 
Segment assets
39,402 91 39,493 
Year Ended December 31, 2023
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$6,488 $— $6,488 
Less:
Fuel used in electric generation and purchased power
$2,203 $— $2,203 
Operation, maintenance and other
1,342 37 1,379 
Depreciation and amortization1,266 — 1,266 
Property and other taxes
164 — 164 
Impairment of assets and other charges
29 — 29 
Interest expense427 — 427 
Income tax expense (benefit)158 (9)149 
Add: Other segment items(a)
128 (1)127 
Segment income (loss) / Net income
$1,027 $(29)$998 
Capital expenditures
$2,387 $— $2,387 
Segment assets
36,820 104 36,924 
(a)    Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Florida  
Segment Reporting Information [Line Items]  
Business Segment Data
Duke Energy Florida has one reportable segment, EU&I.
EU&I generates, distributes and sells electricity in Florida. EU&I conducts operations primarily through Duke Energy Florida. The remainder of Duke Energy Florida's operations is presented as Other.
Year Ended December 31, 2025
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$7,105 $— $7,105 
Less:
Fuel used in electric generation and purchased power
$1,749 $— $1,749 
Operation, maintenance and other
1,849 16 1,865 
Depreciation and amortization1,137 — 1,137 
Property and other taxes
486 — 486 
Interest expense479 — 479 
Income tax expense (benefit)294 (5)289 
Add: Other segment items(a)
91 2 93 
Segment income (loss) / Net income
$1,202 $(9)$1,193 
Capital expenditures$2,698 $— $2,698 
Segment assets
29,522 134 29,656 
Year Ended December 31, 2024
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$6,595 $— $6,595 
Less:
Fuel used in electric generation and purchased power
$2,346 $— $2,346 
Operation, maintenance and other
1,043 12 1,055 
Depreciation and amortization1,057 — 1,057 
Property and other taxes
440 — 440 
Interest expense457 — 457 
Income tax expense (benefit)271 (3)268 
Add: Other segment items(a)
86 3 89 
Segment income (loss) / Net income
$1,067 $(6)$1,061 
Capital expenditures
$2,449 $— $2,449 
Segment assets
28,549 20 28,569 
Year Ended December 31, 2023
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$7,036 $— $7,036 
Less:
Fuel used in electric generation and purchased power
$2,823 $— $2,823 
Operation, maintenance and other
1,212 27 1,239 
Depreciation and amortization885 — 885 
Property and other taxes
480 — 480 
Impairment of assets and other charges
(1)— (1)
Interest expense413 — 413 
Income tax expense (benefit)268 (7)261 
Add: Other segment items(a)
82 (2)80 
Segment income (loss) / Net income
$1,038 $(22)$1,016 
Capital expenditures
$2,529 $— $2,529 
Segment assets
26,362 239 26,601 
(a)    Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Ohio  
Segment Reporting Information [Line Items]  
Business Segment Data
Duke Energy Ohio has two reportable segments, EU&I and GU&I.
EU&I transmits and distributes electricity in portions of Ohio and generates, distributes and sells electricity in portions of Northern Kentucky. GU&I transports and sells natural gas in portions of Ohio and Northern Kentucky. Both reportable segments conduct operations primarily through Duke Energy Ohio and its wholly owned subsidiary, Duke Energy Kentucky. The remainder of Duke Energy Ohio's operations is presented as Other.
Year Ended December 31, 2025
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$2,045 $752 $2,797 — $2,797 
Less:
Fuel used in electric generation and purchased power
$626 $— $626 $— $626 
Cost of natural gas
— 199 199 — 199 
Operation, maintenance and other
366 116 482 8 490 
Depreciation and amortization318 147 465 1 466 
Property and other taxes
335 97 432 — 432 
Interest expense131 71 202 1 203 
Income tax expense (benefit)43 27 70 (2)68 
Add: Other segment items(a)
17 8 25 — 25 
Segment income (loss) / Net income
$243 $103 $346 $(8)$338 
Capital expenditures$600 $329 $929 $— $929 
Segment assets8,575 4,736 13,311 135 13,446 
Year Ended December 31, 2024
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$1,905 $640 $2,545 $— $2,545 
Less:
Fuel used in electric generation and purchased power
$538 $— $538 $— $538 
Cost of natural gas
— 142 142 — 142 
Operation, maintenance and other
366 109 475 10 485 
Depreciation and amortization273 131 404 (1)403 
Property and other taxes
306 94 400 — 400 
Interest expense126 68 194 (2)192 
Income tax expense (benefit)47 18 65 (1)64 
Add: Other segment items(a)
15 5 20 — 20 
Segment income (loss) / Net income
$264 $83 $347 $(6)$341 
Capital expenditures$535 $280 $815 $— $815 
Segment assets8,211 4,506 12,717 51 12,768 
Year Ended December 31, 2023
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$1,868 $639 $2,507 $— $2,507 
Less:
Fuel used in electric generation and purchased power
$608 $— $608 $— $608 
Cost of natural gas
— 163 163 — 163 
Operation, maintenance and other
351 118 469 9 478 
Depreciation and amortization257 110 367 — 367 
Property and other taxes
294 70 364 — 364 
Impairment of assets and other charges
2 — 2 1 3 
Interest expense116 53 169 — 169 
Income tax expense (benefit)42 23 65 (2)63 
Add: Other segment items(a)
29 14 43 (1)42 
Segment income (loss) / Net income
$227 $116 $343 $(9)$334 
Capital expenditures$520 $419 $939 $— $939 
Segment assets7,978 4,346 12,324 (108)12,216 
(a)    Other segment items for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Indiana  
Segment Reporting Information [Line Items]  
Business Segment Data
Duke Energy Indiana has one reportable segment, EU&I.
EU&I generates, distributes and sells electricity in Indiana. EU&I conducts operations primarily through Duke Energy Indiana. The remainder of Duke Energy Indiana's operations is presented as Other.
Year Ended December 31, 2025
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$3,544 $— $3,544 
Less:
Fuel used in electric generation and purchased power
$1,065 $— $1,065 
Operation, maintenance and other
801 10 811 
Depreciation and amortization823 — 823 
Property and other taxes
61 — 61 
Interest expense243 — 243 
Income tax expense (benefit)85 (3)82 
Add: Other segment items(a)
62 (1)61 
Segment income (loss) / Net income
$528 $(8)$520 
Capital expenditures$1,332 $— $1,332 
Segment assets
16,321 25 16,346 
Year Ended December 31, 2024
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$3,040 $— $3,040 
Less:
Fuel used in electric generation and purchased power
$964 $— $964 
Operation, maintenance and other
666 5 671 
Depreciation and amortization676 — 676 
Property and other taxes
50 — 50 
Interest expense228 1 229 
Income tax expense (benefit)72 (1)71 
Add: Other segment items(a)
62 — 62 
Segment income (loss) / Net income
$446 $(5)$441 
Capital expenditures
$935 $— $935 
Segment assets
15,726 1 15,727 
Year Ended December 31, 2023
Electric
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$3,399 $— $3,399 
Less:
Fuel used in electric generation and purchased power
$1,217 $— $1,217 
Operation, maintenance and other
695 18 713 
Depreciation and amortization666 — 666 
Property and other taxes
59 — 59 
Impairment of assets and other charges
(1)1 — 
Interest expense213 — 213 
Income tax expense (benefit)115 (5)110 
Add: Other segment items(a)
77 (1)76 
Segment income (loss) / Net income
$512 $(15)$497 
Capital expenditures
$961 $— $961 
Segment assets
14,966 (155)14,811 
(a)    Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Piedmont  
Segment Reporting Information [Line Items]  
Business Segment Data
Piedmont has one reportable segment, GU&I.
GU&I distributes and sells natural gas in North Carolina, South Carolina and Tennessee. GU&I conducts operations primarily through Piedmont. The remainder of Piedmont's operations is presented as Other.
Year Ended December 31, 2025
Gas
Utilities and
Eliminations/
(in millions)Infrastructure
Other
Total
Total operating revenues
$2,237 $— $2,237 
Less:
Cost of natural gas
$784 $— $784 
Operation, maintenance and other
393 15 408 
Depreciation and amortization282 — 282 
Property and other taxes
67 — 67 
Interest expense193 — 193 
Income tax expense (benefit)115 (3)112 
Other Segment Items
Add: Equity in earnings of unconsolidated affiliates— 8 8 
Add: Other(a)
46 (5)41 
Segment income (loss) / Net income
$449 $(9)$440 
Capital expenditures$807 $— $807 
Segment assets(b)
12,384 86 12,470 
Year Ended December 31, 2024
Gas
Utilities and
Eliminations/
(in millions)Infrastructure
Other
Total
Total operating revenues
$1,729 $— $1,729 
Less:
Cost of natural gas
$423 $— $423 
Operation, maintenance and other
355 4 359 
Depreciation and amortization261 — 261 
Property and other taxes
55 — 55 
Interest expense185 — 185 
Income tax expense (benefit)94 1 95 
Other Segment Items
Add: Equity in earnings of unconsolidated affiliates— 8 8 
Add: Other(a)
54 — 54 
Segment income (loss) / Net income
$410 $3 $413 
Capital expenditures
$1,025 $— $1,025 
Segment assets(b)
11,707 92 11,799 
Year Ended December 31, 2023
Gas
Utilities and
Eliminations/
(in millions)
Infrastructure
Other
Total
Total operating revenues
$1,628 $— $1,628 
Less:
Cost of natural gas
$430 $— $430 
Operation, maintenance and other
336 8 344 
Depreciation and amortization237 — 237 
Property and other taxes
59 — 59 
Impairment of assets and other charges
(4)— (4)
Interest expense165 — 165 
Income tax expense (benefit)84 — 84 
Other Segment Items
Add: Equity in earnings of unconsolidated affiliates— 9 9 
Add: Other(a)
59 (2)57 
Segment income (loss) / Net income
$380 $(1)$379 
Capital expenditures
$1,036 $— $1,036 
Segment assets(b)
10,978 89 11,067 
(a)    Other includes Gains on sales of other assets and other, net, and Other income and expenses, net.
(b)    GU&I includes Assets held for sale balances related to the Piedmont Tennessee Disposal Group. Refer to Note 2 for further     information.
v3.25.4
Regulatory Matters (Tables)
 12 Months Ended
Dec. 31, 2025
Public Utilities, General Disclosures [Line Items]  
Schedule of Regulatory Assets
The following tables present the regulatory assets and liabilities recorded on the Consolidated Balance Sheets of Duke Energy and Progress Energy. See separate tables below for balances by individual registrant.
Duke EnergyProgress Energy
December 31,December 31,
(in millions)2025202420252024
Regulatory Assets
AROs – coal ash$3,670 $3,384 $1,544 $1,335 
Accrued pension and OPEB2,281 2,524 744 828 
Storm cost deferrals73 1,951 49 1,238 
Storm cost securitized balance, net2,567 1,023 1,239 822 
AROs – nuclear and other602 948 564 905 
Nuclear asset securitized balance, net717 771 717 771 
Debt fair value adjustment665 719 — — 
COR regulatory asset860 646 746 571 
Deferred fuel and purchased power619 588 228 282 
Hedge costs deferrals365 352 135 126 
PISCC and deferred operating expenses291 331 37 37 
Retired generation facilities252 337 176 202 
Customer connect project234 257 107 116 
Grid deferral257 255 63 54 
Incremental COVID-19 expenses202 231 94 89 
Vacation accrual240 228 45 43 
Deferred asset – Lee and Harris COLA177 215 4 10 
Advanced metering infrastructure (AMI)162 204 48 70 
Demand side management (DSM) / Energy efficiency (EE)335 199 247 199 
CEP deferral200 195 — — 
NCEMPA deferrals202 179 202 179 
Decoupling118 162 27 32 
Nuclear deferral117 134 53 53 
Deferred pipeline integrity costs117 129 — — 
COR settlement106 110 28 29 
Derivatives – natural gas supply contracts72 94 — — 
Deferred coal ash handling system costs60 77 13 17 
Qualifying facility contract buyouts55 62 55 62 
Network Integration Transmission Services deferral31 31 — — 
Transmission expansion obligation30 31 — — 
East Bend deferrals20 24 — — 
Propane caverns22 24 — — 
Deferred purchased gas costs26 9 — — 
Other568 535 238 195 
Total regulatory assets16,313 16,959 7,403 8,265 
Less: Current portion
1,934 2,739 753 1,647 
Total noncurrent regulatory assets$14,379 $14,220 $6,650 $6,618 
Regulatory Liabilities
COR regulatory liability$5,336 $5,302 $3,084 $2,984 
Net regulatory liability related to income taxes4,748 5,356 1,741 1,882 
AROs – nuclear and other2,982 2,289 — — 
Deferred nuclear PTC1,377 676 197 95 
Hedge cost deferrals582 583 248 281 
Renewable energy credits267 241 146 139 
Accrued pension and OPEB184 232 11 12 
Deferred fuel and purchased power28 223 28 94 
Storm cost recovery262 6 90 6 
DSM / EE26 69 — — 
Storm reserve132 — 132 — 
Nuclear insurance distributions reserve163 152 — — 
Other866 813 274 287 
Total regulatory liabilities 16,953 15,942 5,951 5,780 
Less: Current portion
1,271 1,421 350 522 
Total noncurrent regulatory liabilities $15,682 $14,521 $5,601 $5,258 
Schedule of Regulatory Liabilities
The following tables present the regulatory assets and liabilities recorded on the Consolidated Balance Sheets of Duke Energy and Progress Energy. See separate tables below for balances by individual registrant.
Duke EnergyProgress Energy
December 31,December 31,
(in millions)2025202420252024
Regulatory Assets
AROs – coal ash$3,670 $3,384 $1,544 $1,335 
Accrued pension and OPEB2,281 2,524 744 828 
Storm cost deferrals73 1,951 49 1,238 
Storm cost securitized balance, net2,567 1,023 1,239 822 
AROs – nuclear and other602 948 564 905 
Nuclear asset securitized balance, net717 771 717 771 
Debt fair value adjustment665 719 — — 
COR regulatory asset860 646 746 571 
Deferred fuel and purchased power619 588 228 282 
Hedge costs deferrals365 352 135 126 
PISCC and deferred operating expenses291 331 37 37 
Retired generation facilities252 337 176 202 
Customer connect project234 257 107 116 
Grid deferral257 255 63 54 
Incremental COVID-19 expenses202 231 94 89 
Vacation accrual240 228 45 43 
Deferred asset – Lee and Harris COLA177 215 4 10 
Advanced metering infrastructure (AMI)162 204 48 70 
Demand side management (DSM) / Energy efficiency (EE)335 199 247 199 
CEP deferral200 195 — — 
NCEMPA deferrals202 179 202 179 
Decoupling118 162 27 32 
Nuclear deferral117 134 53 53 
Deferred pipeline integrity costs117 129 — — 
COR settlement106 110 28 29 
Derivatives – natural gas supply contracts72 94 — — 
Deferred coal ash handling system costs60 77 13 17 
Qualifying facility contract buyouts55 62 55 62 
Network Integration Transmission Services deferral31 31 — — 
Transmission expansion obligation30 31 — — 
East Bend deferrals20 24 — — 
Propane caverns22 24 — — 
Deferred purchased gas costs26 9 — — 
Other568 535 238 195 
Total regulatory assets16,313 16,959 7,403 8,265 
Less: Current portion
1,934 2,739 753 1,647 
Total noncurrent regulatory assets$14,379 $14,220 $6,650 $6,618 
Regulatory Liabilities
COR regulatory liability$5,336 $5,302 $3,084 $2,984 
Net regulatory liability related to income taxes4,748 5,356 1,741 1,882 
AROs – nuclear and other2,982 2,289 — — 
Deferred nuclear PTC1,377 676 197 95 
Hedge cost deferrals582 583 248 281 
Renewable energy credits267 241 146 139 
Accrued pension and OPEB184 232 11 12 
Deferred fuel and purchased power28 223 28 94 
Storm cost recovery262 6 90 6 
DSM / EE26 69 — — 
Storm reserve132 — 132 — 
Nuclear insurance distributions reserve163 152 — — 
Other866 813 274 287 
Total regulatory liabilities 16,953 15,942 5,951 5,780 
Less: Current portion
1,271 1,421 350 522 
Total noncurrent regulatory liabilities $15,682 $14,521 $5,601 $5,258 
Schedule of Potential Plant Retirements
Total Storm Registration Costs Across Subsidiary Registrants
Winter Storm Fern
In late January 2026, Winter Storm Fern moved across the eastern U.S and impacted all of Duke Energy's service territories, with damage primarily occurring in the Duke Energy Carolinas and Duke Energy Progress territories in North Carolina and South Carolina. Approximately 200,000 customers were impacted across Duke Energy's system. Total storm restoration costs, including capital expenditures, for Duke Energy are currently estimated to be in the range of $250 million to $350 million (which includes $150 million to $225 million for Duke Energy Carolinas and $100 million to $125 million for Duke Energy Progress). Incremental storm restoration costs related to operation and maintenance activities in excess of amounts in base rates will be deferred as regulatory assets and reviewed for recovery in future regulatory proceedings or charged to storm reserves, where applicable. These estimates could change as additional information is received on actual costs incurred for preparation and restoration activities.
Duke Energy Carolinas and Duke Energy Progress
Duke Energy Carolinas  
Public Utilities, General Disclosures [Line Items]  
Schedule of Regulatory Assets
The following tables present the regulatory assets and liabilities recorded on Duke Energy Carolinas' Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
AROs – coal ash
$1,506 $1,481 
Yes
(b)
Storm cost deferrals
— 691 Yes(b)
Accrued pension and OPEB(c)
592 668 
Yes
(g)
Deferred fuel and purchased power
306 298 (e)
2028
Deferred asset – Lee COLA
173 205 (b)
Hedge costs deferrals
199 202 (b)
Storm cost securitized balance, net
1,328 201 2046
Grid deferral(c)
194 201 Yes(b)
Incremental COVID-19 expenses(c)
104 137 Yes(b)
AMI(c)
102 114 Yes(b)
Vacation accrual
91 86 
2026
Nuclear deferral
64 81 2027
COR settlement
78 81 Yes(b)
Deferred coal ash handling system costs(c)
47 60 Yes(b)
Customer connect project(c)
48 54 Yes(b)
Retired generation facilities(c)
56 110 Yes(b)
DSM/EE
86 — 
Yes
(h)
PISCC and deferred operating expenses
39 42 Yes(b)
Decoupling
45 24 Yes(b)
Other174 148 (b)
Total regulatory assets5,232 4,884 
Less: Current portion
730 685 
Total noncurrent regulatory assets$4,502 $4,199 
Regulatory Liabilities(a)
AROs – nuclear and other
$2,982 2,289 (b)
Net regulatory liability related to income taxes(d)
1,608 $1,951 Yes(b)
COR regulatory liability(c)
1,383 1,479 (f)
Deferred nuclear PTC1,180 581 Yes
(b)
Hedge cost deferrals
228 199 (b)
Deferred fuel and purchased power
— 108 (e)
Renewable energy credits121 102 Yes(b)
Storm cost recovery
172 — Yes(b)
DSM / EE(c)
— 53 Yes
(h)
Accrued pension and OPEB(c)
18 35 
Yes
(g)
Nuclear insurance distributions reserve(c)
163 152 
Yes
(b)
Other 323 261 (b)
Total regulatory liabilities8,178 7,210 
Less: Current portion
569 618 
Total noncurrent regulatory liabilities$7,609 $6,592 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)     Included in rate base.
(d)    Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate. Portions are included in rate base.
(e)    Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. The asset balance principally relates to North Carolina costs while the liability balance relates to South Carolina.
(f)    Recovered over the life of the associated assets.
(g)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
(h)    Includes incentives on DSM/EE investments and is recovered or refunded through an annual rider mechanism.
Schedule of Regulatory Liabilities
The following tables present the regulatory assets and liabilities recorded on Duke Energy Carolinas' Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
AROs – coal ash
$1,506 $1,481 
Yes
(b)
Storm cost deferrals
— 691 Yes(b)
Accrued pension and OPEB(c)
592 668 
Yes
(g)
Deferred fuel and purchased power
306 298 (e)
2028
Deferred asset – Lee COLA
173 205 (b)
Hedge costs deferrals
199 202 (b)
Storm cost securitized balance, net
1,328 201 2046
Grid deferral(c)
194 201 Yes(b)
Incremental COVID-19 expenses(c)
104 137 Yes(b)
AMI(c)
102 114 Yes(b)
Vacation accrual
91 86 
2026
Nuclear deferral
64 81 2027
COR settlement
78 81 Yes(b)
Deferred coal ash handling system costs(c)
47 60 Yes(b)
Customer connect project(c)
48 54 Yes(b)
Retired generation facilities(c)
56 110 Yes(b)
DSM/EE
86 — 
Yes
(h)
PISCC and deferred operating expenses
39 42 Yes(b)
Decoupling
45 24 Yes(b)
Other174 148 (b)
Total regulatory assets5,232 4,884 
Less: Current portion
730 685 
Total noncurrent regulatory assets$4,502 $4,199 
Regulatory Liabilities(a)
AROs – nuclear and other
$2,982 2,289 (b)
Net regulatory liability related to income taxes(d)
1,608 $1,951 Yes(b)
COR regulatory liability(c)
1,383 1,479 (f)
Deferred nuclear PTC1,180 581 Yes
(b)
Hedge cost deferrals
228 199 (b)
Deferred fuel and purchased power
— 108 (e)
Renewable energy credits121 102 Yes(b)
Storm cost recovery
172 — Yes(b)
DSM / EE(c)
— 53 Yes
(h)
Accrued pension and OPEB(c)
18 35 
Yes
(g)
Nuclear insurance distributions reserve(c)
163 152 
Yes
(b)
Other 323 261 (b)
Total regulatory liabilities8,178 7,210 
Less: Current portion
569 618 
Total noncurrent regulatory liabilities$7,609 $6,592 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)     Included in rate base.
(d)    Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate. Portions are included in rate base.
(e)    Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. The asset balance principally relates to North Carolina costs while the liability balance relates to South Carolina.
(f)    Recovered over the life of the associated assets.
(g)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
(h)    Includes incentives on DSM/EE investments and is recovered or refunded through an annual rider mechanism.
Duke Energy Progress  
Public Utilities, General Disclosures [Line Items]  
Schedule of Regulatory Assets
The following tables present the regulatory assets and liabilities recorded on Duke Energy Progress' Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
AROs – coal ash
$1,531 $1,322 
Yes
(b)
AROs – nuclear and other
554 900 (c)
Storm cost securitized balance, net
1,239 822 2046
Accrued pension and OPEB(d)
396 439 
Yes
(i)
Deferred fuel and purchased power
227 277 (e)
2028
Storm cost deferrals
20 276 Yes(b)
DSM/EE(d)
229 188 Yes
(g)
NCEMPA deferrals(d)
202 179 (f)2042
Retired generation facilities(d)
87 108 Yes(b)
Incremental COVID-19 expenses(d)
94 89 (b)
Hedge costs deferrals
87 85 (b)
AMI(d)
39 54 Yes(b)
Grid deferral(d)
63 54 Yes(b)
Nuclear deferral
53 53 2027
Customer connect project(d)
42 45 Yes(b)
Vacation accrual
45 43 2026
PISCC and deferred operating expenses
37 37 Yes2054
Decoupling
27 32 Yes(b)
COR settlement
28 29 Yes(b)
Deferred coal ash handling system costs(d)
13 17 Yes(b)
Deferred asset – Harris COLA
4 10 (b)
Other178 122 (b)
Total regulatory assets5,195 5,181 
Less: Current portion
652 626 
Total noncurrent regulatory assets$4,543 $4,555 
Regulatory Liabilities(a)
COR regulatory liability(d)
$3,084 2,984 
(h)
Net regulatory liability related to income taxes(j)
1,206 $1,318 Yes(b)
Hedge cost deferrals
126 151 (b)
Renewable energy credits146 139 Yes(b)
Storm cost recovery
90 6 Yes(b)
Deferred nuclear PTC197 95 Yes(b)
Accrued pension and OPEB(d)
11 12 
Yes
(i)
Deferred fuel and purchased power
10 10 (e)
2028
Other 211 203 (b)
Total regulatory liabilities5,081 4,918 
Less: Current portion
274 348 
Total noncurrent regulatory liabilities$4,807 $4,570 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Recovery period for costs related to nuclear facilities runs through the decommissioning period of each unit.
(d)    Included in rate base.
(e)    Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. The asset balance principally relates to North Carolina costs while the liability balance relates to South Carolina.
(f)    South Carolina retail allocated costs are earning a return.
(g)    Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism.
(h)    Recovered over the life of the associated assets.
(i)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
(j)    Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate. Portions are included in rate base.
Schedule of Regulatory Liabilities
The following tables present the regulatory assets and liabilities recorded on Duke Energy Progress' Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
AROs – coal ash
$1,531 $1,322 
Yes
(b)
AROs – nuclear and other
554 900 (c)
Storm cost securitized balance, net
1,239 822 2046
Accrued pension and OPEB(d)
396 439 
Yes
(i)
Deferred fuel and purchased power
227 277 (e)
2028
Storm cost deferrals
20 276 Yes(b)
DSM/EE(d)
229 188 Yes
(g)
NCEMPA deferrals(d)
202 179 (f)2042
Retired generation facilities(d)
87 108 Yes(b)
Incremental COVID-19 expenses(d)
94 89 (b)
Hedge costs deferrals
87 85 (b)
AMI(d)
39 54 Yes(b)
Grid deferral(d)
63 54 Yes(b)
Nuclear deferral
53 53 2027
Customer connect project(d)
42 45 Yes(b)
Vacation accrual
45 43 2026
PISCC and deferred operating expenses
37 37 Yes2054
Decoupling
27 32 Yes(b)
COR settlement
28 29 Yes(b)
Deferred coal ash handling system costs(d)
13 17 Yes(b)
Deferred asset – Harris COLA
4 10 (b)
Other178 122 (b)
Total regulatory assets5,195 5,181 
Less: Current portion
652 626 
Total noncurrent regulatory assets$4,543 $4,555 
Regulatory Liabilities(a)
COR regulatory liability(d)
$3,084 2,984 
(h)
Net regulatory liability related to income taxes(j)
1,206 $1,318 Yes(b)
Hedge cost deferrals
126 151 (b)
Renewable energy credits146 139 Yes(b)
Storm cost recovery
90 6 Yes(b)
Deferred nuclear PTC197 95 Yes(b)
Accrued pension and OPEB(d)
11 12 
Yes
(i)
Deferred fuel and purchased power
10 10 (e)
2028
Other 211 203 (b)
Total regulatory liabilities5,081 4,918 
Less: Current portion
274 348 
Total noncurrent regulatory liabilities$4,807 $4,570 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Recovery period for costs related to nuclear facilities runs through the decommissioning period of each unit.
(d)    Included in rate base.
(e)    Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. The asset balance principally relates to North Carolina costs while the liability balance relates to South Carolina.
(f)    South Carolina retail allocated costs are earning a return.
(g)    Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism.
(h)    Recovered over the life of the associated assets.
(i)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
(j)    Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate. Portions are included in rate base.
Duke Energy Florida  
Public Utilities, General Disclosures [Line Items]  
Schedule of Regulatory Assets
The following tables present the regulatory assets and liabilities recorded on Duke Energy Florida's Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
Storm cost deferrals
$29 962 (e)(b)
Nuclear asset securitized balance, net
717 771 2036
COR regulatory asset
746 571 
Yes
(b)
Accrued pension and OPEB(c)
348 389 Yes(f)
Retired generation facilities(c)
89 94 Yes2044
Customer connect project(c)
65 71 Yes2037
Qualifying facility contract buyouts(c)
55 62 Yes2034
Hedge costs deferrals(c)
48 41 Yes
(b)
AMI(c)
9 16 Yes2032
AROs – coal ash
13 13 (b)
AROs – nuclear and other
10 5 (b)
Other79 91 (d)(b)
Total regulatory assets2,208 3,086 
Less: Current portion
102 1,022 
Total noncurrent regulatory assets$2,106 $2,064 
Regulatory Liabilities(a)
Net regulatory liability related to income taxes(c)
$535 $564 (b)
Hedge cost deferrals(c)
122 130 Yes(b)
Deferred fuel and purchased power
18 84 (e)2026
Storm reserve(c)
132 — 
Yes
(b)
Other 63 84 (d)(b)
Total regulatory liabilities870 862 
Less: Current portion
76 174 
Total noncurrent regulatory liabilities$794 $688 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Included in rate base.
(d)    Certain costs earn/pay a return.
(e)    Earns commercial paper rate.
(f)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Schedule of Regulatory Liabilities
The following tables present the regulatory assets and liabilities recorded on Duke Energy Florida's Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
Storm cost deferrals
$29 962 (e)(b)
Nuclear asset securitized balance, net
717 771 2036
COR regulatory asset
746 571 
Yes
(b)
Accrued pension and OPEB(c)
348 389 Yes(f)
Retired generation facilities(c)
89 94 Yes2044
Customer connect project(c)
65 71 Yes2037
Qualifying facility contract buyouts(c)
55 62 Yes2034
Hedge costs deferrals(c)
48 41 Yes
(b)
AMI(c)
9 16 Yes2032
AROs – coal ash
13 13 (b)
AROs – nuclear and other
10 5 (b)
Other79 91 (d)(b)
Total regulatory assets2,208 3,086 
Less: Current portion
102 1,022 
Total noncurrent regulatory assets$2,106 $2,064 
Regulatory Liabilities(a)
Net regulatory liability related to income taxes(c)
$535 $564 (b)
Hedge cost deferrals(c)
122 130 Yes(b)
Deferred fuel and purchased power
18 84 (e)2026
Storm reserve(c)
132 — 
Yes
(b)
Other 63 84 (d)(b)
Total regulatory liabilities870 862 
Less: Current portion
76 174 
Total noncurrent regulatory liabilities$794 $688 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Included in rate base.
(d)    Certain costs earn/pay a return.
(e)    Earns commercial paper rate.
(f)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Duke Energy Ohio  
Public Utilities, General Disclosures [Line Items]  
Schedule of Regulatory Assets
The following tables present the regulatory assets and liabilities recorded on Duke Energy Ohio's Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
CEP deferral
$200 195 Yes(b)
Accrued pension and OPEB
121 131 (d)
COR regulatory asset
114 75 (b)
Customer connect project
39 44 (b)
Network Integration Transmission Services deferral
31 31 Yes(b)
Transmission expansion obligation
30 31 (b)
Decoupling
18 29 (b)
Deferred pipeline integrity costs
26 28 Yes(b)
East Bend deferrals(c)
20 24 Yes(b)
Propane caverns
22 24 (b)
PISCC and deferred operating expenses(c)
14 15 Yes2083
AROs – coal ash
14 14 Yes(b)
Deferred fuel and purchased power
25 8 2026
Other98 144 (b)
Total regulatory assets772 793 
Less: Current portion
86 88 
Total noncurrent regulatory assets$686 $705 
Regulatory Liabilities(a)
Net regulatory liability related to income taxes
$405 $432 (b)
Accrued pension and OPEB
13 14 (d)
Other 109 53 (b)
Total regulatory liabilities527 499 
Less: Current portion
57 34 
Total noncurrent regulatory liabilities$470 $465 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Included in rate base.
(d)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Schedule of Regulatory Liabilities
The following tables present the regulatory assets and liabilities recorded on Duke Energy Ohio's Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
CEP deferral
$200 195 Yes(b)
Accrued pension and OPEB
121 131 (d)
COR regulatory asset
114 75 (b)
Customer connect project
39 44 (b)
Network Integration Transmission Services deferral
31 31 Yes(b)
Transmission expansion obligation
30 31 (b)
Decoupling
18 29 (b)
Deferred pipeline integrity costs
26 28 Yes(b)
East Bend deferrals(c)
20 24 Yes(b)
Propane caverns
22 24 (b)
PISCC and deferred operating expenses(c)
14 15 Yes2083
AROs – coal ash
14 14 Yes(b)
Deferred fuel and purchased power
25 8 2026
Other98 144 (b)
Total regulatory assets772 793 
Less: Current portion
86 88 
Total noncurrent regulatory assets$686 $705 
Regulatory Liabilities(a)
Net regulatory liability related to income taxes
$405 $432 (b)
Accrued pension and OPEB
13 14 (d)
Other 109 53 (b)
Total regulatory liabilities527 499 
Less: Current portion
57 34 
Total noncurrent regulatory liabilities$470 $465 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Included in rate base.
(d)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Duke Energy Indiana  
Public Utilities, General Disclosures [Line Items]  
Schedule of Regulatory Assets
The following tables present the regulatory assets and liabilities recorded on Duke Energy Indiana's Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
AROs – coal ash
$606 $554 Yes(b)
PISCC and deferred operating expenses(c)
201 237 Yes(b)
Accrued pension and OPEB
203 212 (e)
Retired generation facilities(c)
20 25 Yes2030
Hedge costs deferrals
30 23 (b)
Customer connect project
18 19 (b)
Deferred fuel and purchased power
60 — 
2026
Storm cost deferrals
21 17 (b)
AMI
10 12 2031
Other56 54 (b)
Total regulatory assets1,225 1,153 
Less: Current portion
193 113 
Total noncurrent regulatory assets$1,032 $1,040 
Regulatory Liabilities(a)
Net regulatory liability related to income taxes
$641 $725 (b)
COR regulatory liability(c)
444 434 (d)
Accrued pension and OPEB
113 139 (e)
Hedge cost deferrals
106 103 (b)
Deferred fuel and purchased power
— 21 
DSM / EE
19 11 (b)
Other 137 154 (b)
Total regulatory liabilities1,460 1,587 
Less: Current portion
275 183 
Total noncurrent regulatory liabilities$1,185 $1,404 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Included in rate base.
(d)    Refunded over the life of the associated assets.
(e)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Schedule of Regulatory Liabilities
The following tables present the regulatory assets and liabilities recorded on Duke Energy Indiana's Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
AROs – coal ash
$606 $554 Yes(b)
PISCC and deferred operating expenses(c)
201 237 Yes(b)
Accrued pension and OPEB
203 212 (e)
Retired generation facilities(c)
20 25 Yes2030
Hedge costs deferrals
30 23 (b)
Customer connect project
18 19 (b)
Deferred fuel and purchased power
60 — 
2026
Storm cost deferrals
21 17 (b)
AMI
10 12 2031
Other56 54 (b)
Total regulatory assets1,225 1,153 
Less: Current portion
193 113 
Total noncurrent regulatory assets$1,032 $1,040 
Regulatory Liabilities(a)
Net regulatory liability related to income taxes
$641 $725 (b)
COR regulatory liability(c)
444 434 (d)
Accrued pension and OPEB
113 139 (e)
Hedge cost deferrals
106 103 (b)
Deferred fuel and purchased power
— 21 
DSM / EE
19 11 (b)
Other 137 154 (b)
Total regulatory liabilities1,460 1,587 
Less: Current portion
275 183 
Total noncurrent regulatory liabilities$1,185 $1,404 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Included in rate base.
(d)    Refunded over the life of the associated assets.
(e)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Piedmont  
Public Utilities, General Disclosures [Line Items]  
Schedule of Regulatory Assets
The following tables present the regulatory assets and liabilities recorded on Piedmont's Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
Accrued pension and OPEB(c)
$131 $144 (g)
Deferred pipeline integrity costs(c)
91 101 2034
Derivatives – natural gas supply contracts(f)
72 94 2031
Decoupling
28 77 
Yes
(b)
Pipeline Integrity Management – Transmission/Distribution
27 14 (b)
Deferred purchased gas costs
26 9 
Yes
(b)
AROs – nuclear and other
25 25 (d)
Customer connect project(c)
22 24 2030
Vacation accrual(c)
15 14 2026
Other19 26 (e)(b)
Total regulatory assets456 528 
Less: Current portion
106 141 
Total noncurrent regulatory assets$350 $387 
Regulatory Liabilities(a)
COR regulatory liability(c)
$425 $405 
(e)
(d)
Net regulatory liability related to income taxes
353 366 (b)
Other 44 76 (e)(b)
Total regulatory liabilities822 847 
Less: Current portion
20 64 
Total noncurrent regulatory liabilities$802 $783 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Included in rate base.
(d)    Recovery over the life of the associated assets.
(e)    Certain costs earn/pay a return.
(f)    Balance will fluctuate with changes in the market.
(g)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Schedule of Regulatory Liabilities
The following tables present the regulatory assets and liabilities recorded on Piedmont's Consolidated Balance Sheets.
December 31,Earns/PaysRecovery/Refund
(in millions)20252024a ReturnPeriod Ends
Regulatory Assets(a)
Accrued pension and OPEB(c)
$131 $144 (g)
Deferred pipeline integrity costs(c)
91 101 2034
Derivatives – natural gas supply contracts(f)
72 94 2031
Decoupling
28 77 
Yes
(b)
Pipeline Integrity Management – Transmission/Distribution
27 14 (b)
Deferred purchased gas costs
26 9 
Yes
(b)
AROs – nuclear and other
25 25 (d)
Customer connect project(c)
22 24 2030
Vacation accrual(c)
15 14 2026
Other19 26 (e)(b)
Total regulatory assets456 528 
Less: Current portion
106 141 
Total noncurrent regulatory assets$350 $387 
Regulatory Liabilities(a)
COR regulatory liability(c)
$425 $405 
(e)
(d)
Net regulatory liability related to income taxes
353 366 (b)
Other 44 76 (e)(b)
Total regulatory liabilities822 847 
Less: Current portion
20 64 
Total noncurrent regulatory liabilities$802 $783 
(a)    Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)    The expected recovery or refund period varies or has not been determined.
(c)    Included in rate base.
(d)    Recovery over the life of the associated assets.
(e)    Certain costs earn/pay a return.
(f)    Balance will fluctuate with changes in the market.
(g)    Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
v3.25.4
Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2025
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Legal Reserves
The following table contains information regarding reserves for probable and estimable costs related to the various environmental sites. These reserves are recorded in Accounts Payable within Other Current Liabilities and Other within Other Noncurrent Liabilities on the Consolidated Balance Sheets.
(in millions)December 31, 2025December 31, 2024
Reserves for Environmental Remediation
Duke Energy$72 $68 
Duke Energy Carolinas36 24 
Progress Energy20 19 
Duke Energy Progress10 9 
Duke Energy Florida10 10 
Duke Energy Ohio12 21 
Duke Energy Indiana2 2 
Piedmont2 2 
Schedule of Purchase Power Obligations
The following table presents executory purchased power contracts with terms exceeding one year, excluding contracts classified as leases.
  Minimum Purchase Amount at December 31, 2025
Contract
(in millions) Expiration20262027202820292030ThereafterTotal
Duke Energy Progress(a)
2028-2042
$18 $18 $18 $2 $3 $29 $88 
Duke Energy Ohio(b)
2027191 125 — — — — 316 
Duke Energy Indiana(b)
2027
73 7 — — — — 80 
(a)    Contracts represent between 18% and 100% of net plant output.
(b)    Share of net plant output varies.
Schedule of Natural Gas Supply Contract Commitments
The following table presents future unconditional purchase obligations under natural gas supply and capacity contracts as of December 31, 2025.
(in millions)20262027202820292030ThereafterTotal
Duke Energy Ohio$133 $136 $135 $131 $118 $828 $1,481 
Piedmont414 400 335 265 262 605 2,281 
v3.25.4
Leases (Tables)
 12 Months Ended
Dec. 31, 2025
Leases [Abstract]  
Lease Costs and Cash Flows Information
The following tables present the components of lease expense.
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Operating lease expense(a)
$283 $60 $181 $91 $90 $14 $27 $1 
Short-term lease expense(a)
6 — 3 — 3 — 1 — 
Variable lease expense(a)
39 2 35 26 9 — 1 1 
Finance lease expense
Amortization of leased assets(b)
64 12 53 43 10 — 2 — 
Interest on lease liabilities(c)
40 30 43 39 4 — 1 — 
Total finance lease expense104 42 96 82 14 — 3 — 
Total lease expense$432 $104 $315 $199 $116 $14 $32 $2 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Operating lease expense(a)
$275 $66 $173 $82 $91 $12 $23 $2 
Short-term lease expense(a)
7 — 3 1 2 — 1 — 
Variable lease expense(a)
33 2 29 19 10 — 1 1 
Finance lease expense
Amortization of leased assets(b)
113 7 46 38 8 — — — 
Interest on lease liabilities(c)
41 31 44 41 3 — 1 — 
Total finance lease expense154 38 90 79 11 — 1 — 
Total lease expense$469 $106 $295 $181 $114 $12 $26 $3 
(a)    Included in Operation, maintenance and other, except for expenses primarily related to barges and railcars, which is included in Fuel used in electric generation and purchased power on the Consolidated Statements of Operations.
(b)    Included in Depreciation and amortization on the Consolidated Statements of Operations.
(c)    Included in Interest Expense on the Consolidated Statements of Operations.
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Cash paid for amounts included in the measurement of lease liabilities(a)
Operating cash flows from operating leases$277 $24 $122 $56 $66 $1 $8 $1 
Operating cash flows from finance leases40 30 43 39 4 — 1 — 
Financing cash flows from finance leases64 12 53 43 10 — 2 — 
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating
$348 $4 $6 $6 $— $— $1 $— 
Finance72 15 40 9 31 — 2 — 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Cash paid for amounts included in the measurement of lease liabilities(a)
Operating cash flows from operating leases$250 $24 $122 $57 $65 $1 $8 $1 
Operating cash flows from finance leases41 31 44 41 3 — 1 — 
Financing cash flows from finance leases113 7 46 38 8 — — — 
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating
$322 $50 $43 $3 $40 $— $7 $3 
Finance81 1 55 — 55 — 1 — 
(a)    No amounts were classified as investing cash flows from operating leases.
Operating Lease Maturities
The following table presents operating lease maturities and a reconciliation of the undiscounted cash flows to operating lease liabilities.
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
2026$289 $24 $126 $61 $65 $1 $7 $1 
2027239 18 98 61 37 1 6 1 
2028200 15 83 60 23 1 4 1 
2029171 12 81 59 22 — 4 — 
2030136 9 73 59 14 — 3 — 
Thereafter539 44 368 231 137 3 17 — 
Total operating lease payments1,574 122 829 531 298 6 41 3 
Less: Present value discount
(303)(23)(177)(104)(73)(1)(7)— 
Total operating lease liabilities(a)
$1,271 $99 $652 $427 $225 $5 $34 $3 
(a)    Certain operating lease payments include renewal options that are reasonably certain to be exercised.
Maturities of Finance Lease Liabilities
The following table presents finance lease maturities and a reconciliation of the undiscounted cash flows to finance lease liabilities.
December 31, 2025
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndiana
2026$95 $40 $94 $81 $13 $2 
202788 40 91 82 9 2 
202884 39 90 82 8 1 
202981 38 90 82 8 1 
203082 39 90 82 8 1 
Thereafter497 319 437 323 114 18 
Total finance lease payments927 515 892 732 160 25 
Less: Amounts representing interest
(351)(243)(323)(251)(72)(15)
Total finance lease liabilities$576 $272 $569 $481 $88 $10 
Balance Sheet Amounts Recorded for Operating and Finance Leases
The following tables contain additional information related to leases.
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)ClassificationEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Assets
OperatingOperating lease ROU assets, net$1,241 $91 $607 $386 $221 $5 $32 $2 
FinanceNet property, plant and equipment654 251 605 478 127 — 8 — 
Total lease assets$1,895 $342 $1,212 $864 $348 $5 $40 $2 
Liabilities
Current
OperatingOther current liabilities$238 $20 $100 $43 $57 $— $6 $1 
FinanceCurrent maturities of long-term debt55 11 53 45 8 — — — 
Noncurrent
OperatingOperating lease liabilities1,033 79 552 384 168 5 28 2 
FinanceLong-Term Debt521 261 516 436 80 — 10 — 
Total lease liabilities$1,847 $371 $1,221 $908 $313 $5 $44 $3 
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)ClassificationEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Assets
OperatingOperating lease ROU assets, net$1,148 $98 $625 $348 $277 $6 $37 $4 
FinanceNet property, plant and equipment645 252 620 512 108 — 6 — 
Total lease assets$1,793 $350 $1,245 $860 $385 $6 $43 $4 
Liabilities
Current
OperatingOther current liabilities$208 $20 $97 $42 $55 $1 $6 $1 
FinanceCurrent maturities of long-term debt46 8 48 41 7 — — — 
Noncurrent
OperatingOperating lease liabilities957 87 557 332 225 6 33 7 
FinanceLong-Term Debt524 262 533 474 59 — 10 — 
Total lease liabilities$1,735 $377 $1,235 $889 $346 $7 $49 $8 
Supplemental Lease Information
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Weighted average remaining lease term (years)
Operating leases89109121193
Finance leases1214111021— 19— 
Weighted average discount rate(a)
Operating leases4.5 %4.4 %4.4 %4.4 %4.3 %4.2 %3.9 %4.0 %
Finance leases8.2 %11.3 %8.6 %9.2 %5.8 %— %11.6 %— %
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Weighted average remaining lease term (years)
Operating leases89981111114
Finance leases1115111015— 20— 
Weighted average discount rate(a)
Operating leases4.3 %4.3 %4.0 %3.9 %4.2 %4.1 %4.0 %3.9 %
Finance leases8.4 %11.5 %8.9 %9.2 %5.9 %— %11.7 %— %
(a)    The discount rate is calculated using the rate implicit in a lease if it is readily determinable. Generally, the rate used by the lessor is not provided to Duke Energy and in these cases the incremental borrowing rate is used. Duke Energy will typically use its fully collateralized incremental borrowing rate as of the commencement date to calculate and record the lease. The incremental borrowing rate is influenced by the lessee’s credit rating and lease term and as such may differ for individual leases, embedded leases or portfolios of leased assets.
v3.25.4
Debt and Credit Facilities (Tables)
 12 Months Ended
Dec. 31, 2025
Debt Disclosure [Abstract]  
Schedule of Debt
The following tables summarize outstanding debt.
 December 31, 2025
Weighted
AverageDukeDukeDukeDukeDuke
InterestDukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) Rate EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Unsecured debt, maturing 2026-20824.63 %$35,585 $1,150 $1,800 $— $150 $1,285 $386 $4,275 
Secured debt, maturing 2028-20523.85 %4,279 2,115 2,109 1,290 818 — — — 
First mortgage bonds, maturing 2026-2074(a)
4.33 %44,289 15,053 21,923 11,576 10,349 3,075 4,238 — 
Finance leases, maturing 2027-2064576 272 569 481 88 — 10 — 
Tax-exempt bonds, maturing 2027-2046(b)
3.54 %1,331 — 500 500 — 77 352 — 
Notes payable and commercial paper(c)
3.95 %3,254 — — — — — — — 
Money pool/intercompany borrowings — 300 150 150 — 38 325 609 
Fair value hedge carrying value adjustment  176 — — — — — — — 
Unamortized debt discount and premium, net(d)
 762 (20)(44)(25)(19)(22)(16)(7)
Unamortized debt issuance costs(e)
(416)(93)(159)(76)(79)(20)(27)(17)
Total debt 4.41 %$89,836 $18,777 $26,848 $13,896 $11,307 $4,433 $5,268 $4,860 
Short-term notes payable and commercial paper  (2,624)— — — — — — — 
Short-term money pool/intercompany borrowings — — — — — (13)(175)(609)
Current maturities of long-term debt(f)
 (7,104)(629)(722)(285)(437)(45)(4)(490)
Total long-term debt(f)
$80,108 $18,148 $26,126 $13,611 $10,870 $4,375 $5,089 $3,761 
(a)Substantially all electric utility property is mortgaged under mortgage bond indentures.
(b)Substantially all tax-exempt bonds are secured by first mortgage bonds, letters of credit or the Master Credit Facility.
(c)Includes $625 million classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy's commercial paper program was 21 days.
(d)Duke Energy includes $855 million and $45 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively.
(e)Duke Energy includes $21 million in purchase accounting adjustments primarily related to the merger with Progress Energy.
(f)Refer to Note 18 for additional information on amounts from consolidated VIEs.
 December 31, 2024
Weighted
AverageDukeDukeDukeDukeDuke
InterestDukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) Rate EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Unsecured debt, maturing 2025-2082
4.53 %$34,283 $1,605 $2,085 $185 $250 $1,380 $390 $4,030 
Secured debt, maturing 2025-2052
3.75 %3,672 1,463 2,147 1,269 879 — — — 
First mortgage bonds, maturing 2025-2074(a)
4.24 %39,842 13,955 19,223 9,974 9,247 2,722 3,937 — 
Finance leases, maturing 2027-2054
570 270 581 515 66 — 10 — 
Tax-exempt bonds, maturing 2027-2046(b)
3.85 %1,331 — 500 500 — 77 352 — 
Notes payable and commercial paper(c)
4.67 %4,213 — — — — — — — 
Money pool/intercompany borrowings— 300 1,227 761 467 189 160 739 
Fair value hedge carrying value adjustment(82)— — — — — — — 
Unamortized debt discount and premium, net(d)
845 (20)(44)(24)(19)(23)(16)(8)
Unamortized debt issuance costs(e)
(401)(83)(146)(65)(76)(18)(25)(19)
Total debt 4.37 %$84,273 $17,490 $25,573 $13,115 $10,814 $4,327 $4,808 $4,742 
Short-term notes payable and commercial paper  (3,584)— — — — — — — 
Short-term money pool/intercompany borrowings — — (1,077)(611)(466)(162)(10)(739)
Current maturities of long-term debt(f)
 (4,349)(521)(1,517)(983)(534)(245)(4)(205)
Total long-term debt(f)
$76,340 $16,969 $22,979 $11,521 $9,814 $3,920 $4,794 $3,798 
(a)    Substantially all electric utility property is mortgaged under mortgage bond indentures.
(b)    Substantially all tax-exempt bonds are secured by first mortgage bonds, letters of credit or the Master Credit Facility.
(c)    Includes $625 million that was classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy's commercial paper programs was 13 days.
(d)    Duke Energy includes $925 million and $56 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively.
(e)    Duke Energy includes $23 million in purchase accounting adjustments primarily related to the merger with Progress Energy.
(f)     Refer to Note 18 for additional information on amounts from consolidated VIEs.
The following table shows the significant components of Current maturities of Long-Term Debt on the Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings.
(in millions)Maturity DateInterest RateDecember 31, 2025
Unsecured Debt
Duke Energy (Parent) Convertible Senior NotesApril 20264.125 %1,725 
Piedmont Term Loan Facility(a)
August 20264.611 %450 
Duke Energy (Parent)September 20262.650 %1,500 
Duke Energy (Parent) Term Loan Facility(a)
September 20264.704 %2,000 
First Mortgage Bonds
Duke Energy Carolinas
December 2026
2.950 %600 
Duke Energy Florida(a)(b)
October 2073
3.981 %200 
Duke Energy Florida(a)(b)
April 20743.981 %173 
Duke Energy Progress(c)
October 2046
3.300 %200 
Other(d)
256 
Current maturities of long-term debt$7,104 
(a)    Debt has a floating interest rate.
(b)    These first mortgage bonds are classified as Current maturities of long-term debt on the Consolidated Balance Sheets based on terms of the indentures, which could require repayment in less than 12 months if exercised by the bondholders.
(c)    These tax-exempt bonds are secured by first mortgage bonds and are classified as Current maturities of long-term debt on the Consolidated Balance Sheets as of December 31, 2025, due to a mandatory put option expiring October 1, 2026. Duke Energy Progress anticipates remarketing the bonds and the securities are expected to be reclassified to Long-Term Debt at that time.
(d)    Includes finance lease obligations, amortizing debt, tax-exempt bonds with mandatory put options and small bullet maturities.
The following tables show short-term obligations classified as long-term debt.
 Balance at December 31, 2025 and 2024
DukeDukeDukeDuke
DukeEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasProgressOhioIndiana
Tax-exempt bonds $312 $— $— $27 $285 
Commercial paper(a)
625 300 150 25 150 
Total $937 $300 $150 $52 $435 
(a)    Progress Energy amounts are equal to Duke Energy Progress amounts.
The following tables summarize significant debt issuances (in millions).
Year Ended December 31, 2025
DukeDukeDukeDukeDukeDuke
MaturityInterestDukeEnergyEnergyEnergyEnergyEnergyEnergy
Issuance DateDateRateEnergy(Parent)CarolinasProgressFloridaOhioIndiana
Unsecured Debt
August 2025(e)
September 2030
5.410 %$68 $— $— $— $— $68 $— 
August 2025(e)
September 2035
6.010 %43 — — — — 43 — 
August 2025(e)
September 2037
6.110 %40 — — — — 40 — 
September 2025(f)
September 2035
4.950 %1,000 1,000 — — — — — 
September 2025(f)
September 2055
5.700 %750 750 — — — — — 
Secured Debt
September 2025(g)
July 2037
4.226 %200 — 200 $— — — — 
September 2025(g)
January 2048
5.070 %382 — 382 — — — — 
September 2025(g)
January 2048
4.890 %461 — — 461 — — — 
November 2025(g)
March 2046
4.898 %561 — 561 — — — — 
First Mortgage Bonds
January 2025(a)
March 2030
4.850 %$400 $— $400 $— $— $— $— 
January 2025(a)
March 2035
5.250 %700 — 700 — — — — 
March 2025(b)
March 2027
4.350 %500 — — 500 — — — 
March 2025(b)
March 2035
5.050 %850 — — 850 — — — 
March 2025(b)
March 2055
5.550 %750 — — 750 — — — 
May 2025(c)
May 2055
5.900 %300 — — — — — 300 
June 2025(d)
June 2035
5.300 %350 — — — — 350 — 
November 2025(c)
December 2030
4.200 %500 — — — 500 — — 
November 2025(c)
December 2035
4.850 %600 — — — 600 — — 
Total issuances$7,005 $1,750 $2,243 $2,561 $1,100 $501 $300 
(a)Proceeds were used to repay the $500 million DERF accounts receivable securitization facility due January 2025, to pay down short-term debt and for general company purposes.
(b)Proceeds were used to repay the $400 million DEPR accounts receivable securitization facility due April 2025, to pay down short-term debt and for general company purposes.
(c)Proceeds were used to pay down short-term debt and for general company purposes.
(d)Proceeds were used to repay $150 million of maturities due June 2025, to pay down short-term debt and for general corporate purposes.
(e)Proceeds were used to repay $95 million of maturities due October 2025, repay $45 million of maturities due January 2026, pay down short-term debt and for general corporate purposes.
(f)Proceeds were used to repay $650 million of maturities due September 2025, repay $500 million of maturities due December 2025, to pay down short-term debt and for general corporate purposes.
(g)Proceeds were used to recover previously incurred storm costs, repay the Duke Energy Carolinas and Duke Energy Progress term loan facilities and for general company purposes.
Year Ended December 31, 2024
DukeDukeDukeDukeDukeDuke
MaturityInterestDukeEnergyEnergyEnergyEnergyEnergyEnergy
Issuance DateDateRateEnergy(Parent)CarolinasProgressFloridaOhioIndianaPiedmont
Unsecured Debt
January 2024(a)
January 2027
4.850 %$600 $600 $— $— $— $— $— $— 
January 2024(a)
January 2029
4.850 %650 650 — — — — — — 
April 2024(e)
April 2031
5.648 %815 815 — — — — — — 
June 2024(d)
June 2034
5.450 %750 750 — — — — — — 
June 2024(d)
June 2054
5.800 %750 750 — — — — — — 
June 2024(h)
July 2031
5.900 %80 — — — — 80— — 
June 2024(h)
July 2034
6.000 %95 — — — — 95— — 
June 2024(h)
July 2039
6.170 %50 — — — — 50— — 
August 2024(d)
February 2035
5.100 %375 — — — — — — 375 
August 2024(i)
September 2054
6.450 %1,000 1,000 — — — — — — 
Secured Debt
April 2024(f)
March 2044
5.404 %177 — — 177 — — — — 
First Mortgage Bonds
January 2024(b)
January 2034
4.850 %575 — 575 — — — — — 
January 2024(b)
January 2054
5.400 %425 — 425 — — — — — 
March 2024(b)
March 2034
5.250 %300 — — — — — 300 — 
March 2024(c)
March 2034
5.100 %500 — — 500 — — — — 
March 2024(d)
March 2054
5.550 %425 — — — — 425 — — 
April 2024(g)
April 2074
3.981 %173 — — — 173 — — — 
Total issuances$7,740 $4,565 $1,000 $677 $173 $650 $300 $375 
(a)Proceeds were used to repay the remaining $1 billion outstanding on Duke Energy (Parent)'s variable rate Term Loan Facility due March 2024, pay down a portion of short-term debt and for general corporate purposes. Duke Energy (Parent)'s Term Loan Facility was terminated in March 2024 in conjunction with the payoff of remaining borrowings.
(b)Proceeds were used to pay down a portion of short-term debt and for general company purposes.
(c)Proceeds were used to fund eligible green energy projects, pay down a portion of short-term debt and for general company purposes.
(d)Proceeds were used to pay down a portion of short-term debt and for general corporate purposes.
(e)In April 2024, Duke Energy issued 750 million euros aggregate principal amount of 3.75% senior notes due April 2031. Duke Energy's obligations under its euro-denominated fixed-rate notes were effectively converted to fixed-rate U.S. dollars at issuance through cross-currency swaps, mitigating foreign currency exchange risk associated with the interest and principal payments. The $815 million equivalent in U.S. dollars were used to repay a portion of a $1 billion debt maturity due April 2024, pay down short-term debt and for general corporate purposes. See Note 15 for additional information.
(f)Proceeds were used to finance the South Carolina portion of restoration expenditures related to the following storms: Pax, Ulysses, Matthew, Florence, Michael, Dorian, Izzy and Jasper. See Notes 4 and 18 for more information.
(g)Debt has a floating interest rate. Proceeds were used to pay down a portion of the DEFR accounts receivable securitization facility due in April 2024, and for general company purposes. See Note 18 for more information.
(h)Debt issued by Duke Energy Kentucky with proceeds used to pay down a portion of short-term debt and for general corporate purposes.
(i)Duke Energy issued $1 billion of fixed-to-fixed reset rate junior subordinated debentures (the debentures) with proceeds used to redeem Duke Energy’s outstanding Series B Preferred Stock and for general corporate purposes. The debentures will bear interest at 6.45% until September 1, 2034, and thereafter the interest rate will reset every five years to the five-year U.S. Treasury rate plus a spread of 2.588%. The debentures have early redemption options and are callable on or after June 2034 for 100% of the principal plus accrued interest. See Note 20 for additional information.
Schedule of Maturities of Long-term Debt
The following table shows the annual maturities of long-term debt for the next five years and thereafter. Amounts presented exclude short-term notes payable, commercial paper and money pool borrowings and debt issuance costs for the Subsidiary Registrants.
 December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)
Energy(a)
CarolinasEnergyProgressFloridaOhioIndianaPiedmont
2026$7,123 $630 $730 $287 $443 $45 $4 $490 
20273,639 67 1,322 604 718 77 28 300 
20284,079 1,018 1,427 608 819 40 7 — 
20294,554 522 1,634 863 771 505 5 660 
20304,433 1,277 1,481 371 1,111 528 155 — 
Thereafter63,037 15,375 20,459 11,265 7,543 3,267 4,937 2,826 
Total long-term debt, including current maturities$86,865 $18,889 $27,053 $13,998 $11,405 $4,462 $5,136 $4,276 
(a)    Excludes $921 million in purchase accounting adjustments related to the Progress Energy merger and the Piedmont acquisition.
Schedule of Line of Credit Facilities
The table below includes borrowing sublimits and available capacity under these credit facilities.
 December 31, 2025
DukeDukeDukeDukeDukeDuke
DukeEnergyEnergyEnergyEnergyEnergyEnergy
(in millions) Energy(Parent)CarolinasProgressFloridaOhioIndianaPiedmont
Facility size(a)
$10,000 $3,425 $1,650 $1,675 $700 $700 $850 $1,000 
Reduction to backstop issuances
Commercial paper(b)
(2,144)(1,019)(300)(150)— (34)(260)(381)
Outstanding letters of credit (7)(2)(4)(1)— — — — 
Tax-exempt bonds (81)— — — — — (81)— 
Available capacity $7,768 $2,404 $1,346 $1,524 $700 $666 $509 $619 
(a)    Represents the sublimit of each borrower.
(b)    Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are classified as Long-Term Debt Payable to Affiliated Companies in the Consolidated Balance Sheets.
v3.25.4
Joint Ownership of Generating and Transmission Facilities (Tables)
 12 Months Ended
Dec. 31, 2025
Joint Ownership Of Generating And Transmission Facilities [Abstract]  
Schedule Joint Ownership of Generating and Transmission Facilities
The following table presents the Duke Energy Registrants' interest of jointly owned plant or facilities and amounts included on the Consolidated Balance Sheets. All facilities are operated by the Duke Energy Registrants and are included in the EU&I segment.
 December 31, 2025
Construction
OwnershipProperty, PlantAccumulatedWork in
(in millions except for ownership interest)Interestand EquipmentDepreciationProgress
Duke Energy Carolinas     
Catawba (units 1 and 2)(a)
19.25 %$1,067 $600 $28 
W.S. Lee CC(b)
87.27 %659 139 6 
Duke Energy Indiana     
Gibson (unit 5)(c)
50.05 %491 295 1 
Vermillion(d)
62.50 %182 127 1 
Transmission and local facilities(c)
Various8,543 1,805 357 
(a)    Jointly owned with North Carolina Municipal Power Agency Number 1, NCEMC and PMPA.
(b)    Jointly owned with NCEMC.
(c)    Jointly owned with WVPA and IMPA.
(d)    Jointly owned with WVPA.
v3.25.4
Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2025
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Asset Retirement Obligations by Category
The following table presents the AROs recorded on the Consolidated Balance Sheets.
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Decommissioning of nuclear power facilities
$4,668 $2,158 $2,497 $2,428 $69 $— $— $— 
Closure of ash impoundments4,607 1,610 1,838 1,814 24 64 1,095 — 
Other350 74 151 47 104 71 30 25 
Total asset retirement obligation$9,625 $3,842 $4,486 $4,289 $197 $135 $1,125 $25 
Less: Current portion579 245 196 194 2 6 133 — 
Total noncurrent asset retirement obligation$9,046 $3,597 $4,290 $4,095 $195 $129 $992 $25 
Public Utilities General Disclosures
The following table summarizes information about the most recent site-specific nuclear decommissioning cost studies. Decommissioning costs are stated in 2023 or 2024 dollars, depending on the year of the cost study, and include costs to decommission plant components not subject to radioactive contamination.
Decommissioning
(in millions)
Costs
Year of Cost Study
Duke Energy$8,972 2023 and 2024
Duke Energy Carolinas(a)
4,439 2023
Progress Energy
4,533 2024
Duke Energy Progress(b)
4,477 2024
Duke Energy Florida(c)
56 N/A
(a)    Decommissioning costs for Duke Energy Carolinas reflect its ownership interest in jointly owned reactors. Other joint owners are responsible for decommissioning costs related to their interest in the reactors. Duke Energy Carolinas' site-specific nuclear decommissioning cost study and a funding study were filed with the NCUC and PSCSC in 2024.
(b)    Duke Energy Progress' site-specific nuclear decommissioning cost study and a funding study were filed with the NCUC and PSCSC in 2025.
(c)    During 2019, Duke Energy Florida reached an agreement to transfer decommissioning work for Crystal River Unit 3 to a third party and decommissioning costs are based on the agreement with this third party rather than a cost study. Regulatory approval was received from the NRC and the FPSC in April 2020 and August 2020, respectively. Duke Energy Florida provides the FPSC periodic reports on the status and progress of decommissioning activities.
The following table presents the fair value of NDTF assets legally restricted for purposes of settling AROs associated with nuclear decommissioning. Duke Energy Florida entered into an agreement with a third party to decommission Crystal River Unit 3 and was granted an exemption from the NRC, which allows for use of the NDTF for all aspects of nuclear decommissioning. The entire balance of Duke Energy Florida's NDTF may be applied toward license termination, spent fuel and site restoration costs incurred to decommission Crystal River Unit 3 and is excluded from the table below. See Note 17 for additional information related to the fair value of the Duke Energy Registrants' NDTFs.
December 31,
(in millions)20252024
Duke Energy$11,373 $10,044 
Duke Energy Carolinas6,453 5,687 
Progress Energy
4,920 4,357 
Duke Energy Progress4,920 4,357 
The following table includes the current expiration of nuclear operating licenses.
UnitYear of Expiration
Duke Energy Carolinas
Catawba Units 1 and 22043
McGuire Unit 12041
McGuire Unit 22043
Oconee Units 1 and 22053
Oconee Unit 32054
Duke Energy Progress
Brunswick Unit 12036
Brunswick Unit 22034
Harris2046
Robinson2030
Rollforward Schedule of Asset Retirement Obligations
The following tables present changes in the liability associated with AROs.
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Balance at December 31, 2023$9,152 $4,013 $4,145 $3,870 $275 $136 $809 $21 
Accretion expense(a)
434 183 199 190 9 7 49 2 
Liabilities settled(b)
(634)(212)(321)(232)(89)(7)(94)— 
Liabilities incurred in the current year20 8 12 — 12 — — — 
Revisions in estimates of cash flows(c)
1,016 (2)513 506 7 3 504 1 
Balance at December 31, 20249,988 3,990 4,548 4,334 214 139 1,268 24 
Accretion expense(a)
474 188 219 211 8 7 65 1 
Liabilities settled(b)
(584)(227)(245)(203)(42)(6)(106)— 
Liabilities incurred in the current year18 1 17 5 12 — — — 
Revisions in estimates of cash flows(c)
(271)(110)(53)(58)5 (5)(102)— 
Balance at December 31, 2025$9,625 $3,842 $4,486 $4,289 $197 $135 $1,125 $25 
    
(a)    Substantially all accretion expense has been deferred in accordance with regulatory accounting treatment.
(b)    Amounts primarily relate to ash impoundment closures and nuclear decommissioning.
(c)    The amounts recorded represent the discounted cash flows for estimated closure costs as evaluated on a site-by-site basis. The increases in 2024 primarily relate to additional scope requirements to regulate the disposal of CCR in landfills and surface impoundments as a result of the 2024 CCR Rule, including an increase in groundwater monitoring wells. The decreases in 2025 primarily relate to lower third-party markup and a shift in timing of costs to future years.
v3.25.4
Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment The composite weighted average depreciation rates, excluding nuclear fuel, are included in the table that follows.
 Years Ended December 31,
 202520242023
Duke Energy 3.1 %3.0 %2.9 %
Duke Energy Carolinas 3.1 %3.1 %2.7 %
Progress Energy 3.2 %3.3 %3.3 %
Duke Energy Progress 3.2 %3.2 %3.1 %
Duke Energy Florida 3.2 %3.5 %3.5 %
Duke Energy Ohio 2.9 %2.9 %2.8 %
Duke Energy Indiana 4.3 %3.6 %3.6 %
Piedmont2.2 %2.2 %2.1 %
The following tables summarize the property, plant and equipment for Duke Energy and its subsidiary registrants.
December 31, 2025
Average
RemainingDukeDukeDukeDukeDuke
Useful LifeDukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)(Years)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Land $2,667 $644 $1,226 $557 $669 $289 $157 $326 
Plant – Regulated
Electric generation, distribution and transmission 38145,947 52,259 66,751 37,561 29,190 7,945 18,992 — 
Natural gas transmission and distribution 5814,201 — — — — 4,529 — 9,672 
Other buildings and improvements 403,214 1,280 854 423 431 437 381 262 
Nuclear fuel 3,683 2,128 1,555 1,555 — — — — 
Equipment 114,193 1,132 1,456 852 604 555 540 131 
Construction in process 10,075 3,708 4,390 2,761 1,629 394 884 408 
Other116,429 1,362 2,115 1,466 637 478 287 526 
Total property, plant and equipment(a)
190,409 62,513 78,347 45,175 33,160 14,627 21,241 11,325 
Total accumulated depreciation – regulated(b)(c)
(59,441)(20,658)(25,425)(16,980)(8,437)(3,812)(7,492)(2,168)
Total accumulated depreciation – other(d)
(1,009)— — — — — — — 
Total net property, plant and equipment $129,959 $41,855 $52,922 $28,195 $24,723 $10,815 $13,749 $9,157 
(a)    Includes finance leases of $682 million, $349 million, $605 million, $478 million, $127 million and $13 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $208 million, $203 million and $5 million, respectively, of accumulated amortization of finance leases.
(b)    Includes $1,886 million, $1,064 million, $822 million and $822 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively.
(c)    Includes accumulated amortization of finance leases of $98 million and $5 million at Duke Energy Carolinas and Duke Energy Indiana, respectively.
(d)    Includes accumulated amortization of finance leases of $35 million at Duke Energy.
December 31, 2024
Average
RemainingDukeDukeDukeDukeDuke
Useful LifeDukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)(Years)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Land $2,503 $617 $1,134 $535 $599 $258 $144 $325 
Plant – Regulated
Electric generation, distribution and transmission 37137,836 49,547 62,351 35,633 26,718 7,634 18,304 — 
Natural gas transmission and distribution 5713,482 — — — — 4,255 — 9,227 
Other buildings and improvements 412,948 1,256 698 391 307 418 372 204 
Nuclear fuel 3,518 2,003 1,515 1,515 — — — — 
Equipment 133,850 997 1,252 753 499 542 490 157 
Construction in process 7,756 2,735 3,657 1,884 1,773 385 406 311 
Other106,844 1,227 1,953 1,349 594 426 254 488 
Total property, plant and equipment(a)
178,737 58,382 72,560 42,060 30,490 13,918 19,970 10,712 
Total accumulated depreciation – regulated(b)(c)
(55,143)(19,090)(23,586)(15,930)(7,650)(3,674)(6,848)(2,041)
Total accumulated depreciation – other(d)
(1,968)— — — — — — — 
Total net property, plant and equipment $121,626 $39,292 $48,974 $26,130 $22,840 $10,244 $13,122 $8,671 
(a)    Includes finance leases of $670 million, $336 million, $620 million, $512 million, $108 million, and $10 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy and Duke Energy Progress amounts are net of $159 million of accumulated amortization of finance leases.
(b)    Includes $1,824 million, $1,010 million, $814 million and $814 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively.
(c)    Includes accumulated amortization of finance leases of $84 million and $4 million at Duke Energy Carolinas and Duke Energy Indiana, respectively.
(d)    Includes accumulated amortization of finance leases of $25 million at Duke Energy.
Schedule of Capitalized Interest
The following table presents capitalized interest, which includes the debt component of AFUDC.
Years Ended December 31,
(in millions)202520242023
Duke Energy$182 $201 $201 
Duke Energy Carolinas66 61 62 
Progress Energy60 57 41 
Duke Energy Progress53 52 35 
Duke Energy Florida7 5 6 
Duke Energy Ohio10 14 16 
Duke Energy Indiana
2 13 21 
Piedmont7 8 8 
v3.25.4
Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets
The following tables show the carrying amount and accumulated amortization of intangible assets included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets of the Duke Energy Registrants at December 31, 2025, and 2024.
 December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Emission allowances $8 $— $5 $2 $3 $— $2 $— 
Renewable energy certificates 259 115 143 143 — 1 — — 
Other 47 — 5 1 4 — — 22 
Total gross carrying amounts 314 115 153 146 7 1 2 22 
Accumulated amortization – other (23)— (4)— (4)— — (12)
Total intangible assets, net $291 $115 $149 $146 $3 $1 $2 $10 
 December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Emission allowances $8 $— $5 $2 $3 $— $2 $— 
Renewable energy certificates 241 103 136 136 — 2 — — 
Other 47 — 5 1 4 — — 22 
Total gross carrying amounts 296 103 146 139 7 2 2 22 
Accumulated amortization – other (19)— (3)— (3)— — (9)
Total intangible assets, net $277 $103 $143 $139 $4 $2 $2 $13 
v3.25.4
Investments in Unconsolidated Affiliates (Tables)
 12 Months Ended
Dec. 31, 2025
Equity Method Investments and Joint Ventures [Abstract]  
Investments in Equity Method Unconsolidated Affiliates
The following table presents Duke Energy’s investments in unconsolidated affiliates accounted for under the equity method, as well as the respective equity in earnings (losses), by segment, for periods presented in this filing.
 Years Ended December 31,
 202520242023
Equity in
Equity in
Equity in
(in millions)InvestmentsearningsInvestments
(losses) earnings
earnings
Electric Utilities and Infrastructure$— $— $28 $(11)$7 
Gas Utilities and Infrastructure177 15 186 (48)40 
Other153 36 139 50 66 
Total$330 $51 $353 $(9)$113 
v3.25.4
Related Party Transactions (Tables)
 12 Months Ended
Dec. 31, 2025
Related Party Transactions [Abstract]  
Related Party Transactions, Other Revenue and Expense Transactions with related parties included in the Consolidated Statements of Operations and Comprehensive Income are presented in the following table.
 Years Ended December 31,
(in millions) 202520242023
Duke Energy Carolinas   
Corporate governance and shared service expenses(a)
$638 $812 $823 
Indemnification coverages(b)
54 44 34 
JDA revenue(c)
119 35 34 
JDA expense(c)
349 187 177 
Intercompany natural gas purchases(d)
6 12 11 
Progress Energy 
Corporate governance and shared service expenses(a)
$591 $709 $736 
Indemnification coverages(b)
63 57 47 
JDA revenue(c)
349 187 177 
JDA expense(c)
119 35 34 
Intercompany natural gas purchases(d)
76 75 75 
Duke Energy Progress 
Corporate governance and shared service expenses(a)
$342 $426 $434 
Indemnification coverages(b)
26 23 20 
JDA revenue(c)
349 187 177 
JDA expense(c)
119 35 34 
Intercompany natural gas purchases(d)
76 75 75 
Duke Energy Florida 
Corporate governance and shared service expenses(a)
$249 $283 $302 
Indemnification coverages(b)
37 34 27 
Duke Energy Ohio 
Corporate governance and shared service expenses(a)
$260 $304 $294 
Indemnification coverages(b)
6 6 5 
Duke Energy Indiana 
Corporate governance and shared service expenses(a)
$293 $355 $365 
Indemnification coverages(b)
9 10 8 
Piedmont
Corporate governance and shared service expenses(a)
$143 $166 $149 
Indemnification coverages(b)
5 4 4 
Intercompany natural gas sales(d)
82 87 86 
Natural gas storage and transportation costs(e)
22 23 24 
(a)The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are primarily recorded in Operation, maintenance and other on the Consolidated Statements of Operations and Comprehensive Income.
(b)The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Consolidated Statements of Operations and Comprehensive Income.
(c)Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power and expenses from the purchase of power pursuant to the JDA are recorded in Operating Revenues and Fuel used in electric generation and purchased power, respectively, on the Consolidated Statements of Operations and Comprehensive Income.
(d)Piedmont provides long-term natural gas delivery service to certain Duke Energy Carolinas and Duke Energy Progress natural gas-fired generation facilities. Piedmont records the sales in Operating Revenues, and Duke Energy Carolinas and Duke Energy Progress record the related purchases as a component of Fuel used in electric generation and purchased power on their respective Consolidated Statements of Operations and Comprehensive Income.
(e)Piedmont has related party transactions as a customer of its equity method investments in Pine Needle, Hardy Storage and Cardinal natural gas storage and transportation facilities. These expenses are included in Cost of natural gas on Piedmont's Consolidated Statements of Operations and Comprehensive Income.
The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.
DukeDukeDukeDukeDuke
EnergyProgressEnergyEnergyEnergyEnergy
(in millions)CarolinasEnergyProgressFloridaOhioIndianaPiedmont
December 31, 2025
Intercompany income tax payable$81 $72 $77 $12 $10 $39 $59 
December 31, 2024
Intercompany income tax receivable$— $— $— $154 $— $— $— 
Intercompany income tax payable419 169 315 — 43 110 43 
v3.25.4
Derivatives and Hedging (Tables)
 12 Months Ended
Dec. 31, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Notional Amounts of Outstanding Derivative Positions
The following tables show notional amounts of outstanding derivatives related to interest rate risk.
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndianaOhio
Cash flow hedges$1,725 $— $— $— $— $— $— 
Undesignated contracts3,852 2,175 1,325 650 675 325 27 
Total notional amount$5,577 $2,175 $1,325 $650 $675 $325 $27 
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndianaOhio
Cash flow hedges$2,825 $— $— $— $— $— $— 
Undesignated contracts3,202 1,150 1,775 1,125 650 250 27 
Total notional amount$6,027 $1,150 $1,775 $1,125 $650 $250 $27 
The tables below include volumes of outstanding commodity derivatives. Amounts disclosed represent the absolute value of notional volumes of commodity contracts excluding NPNS. The Duke Energy Registrants have netted contractual amounts where offsetting purchase and sale contracts exist with identical delivery locations and times of delivery. Where all commodity positions are perfectly offset, no quantities are shown.
December 31, 2025
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
EnergyCarolinasEnergyProgressOhioIndianaPiedmont
Electricity (GWh)10,615 — — — 1,349 9,266 — 
Natural gas (millions of Dth)814 307 286 286 — 33 188 
December 31, 2024
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
EnergyCarolinasEnergyProgressOhioIndianaPiedmont
Electricity (GWh)12,229 — — — 1,287 10,942 — 
Natural gas (millions of Dth)779 276 246 246 — 32 225 
The following table shows Duke Energy's outstanding derivatives related to foreign currency risk.
Fair Value Gain (Loss)(a)
Receive
Hedge
(in millions)
Pay NotionalNotionalReceive
Maturity
Years Ended December 31,
(in millions)Pay Rate(in millions)Rate
Date
202520242023
Fair value hedges
$645 4.75 %600 euros3.10 %June 2028$84 $(41)$17 
537 5.31 %500 euros3.85 %June 203470 (34)15 
815 5.65 %750 
euros
3.75 %April 2031104 (38)— 
Total
$1,997 1,850 euros$258 $(113)$32 
(a)    Amounts are recorded in Other Income and expenses, net on the Consolidated Statement of Operations, which offsets an equal translation adjustment of the foreign denominated debt. See the Consolidated Statements of Comprehensive Income for amounts excluded from the assessment of effectiveness for which the difference between changes in fair value and periodic amortization is recorded.
Location and Fair Value of Derivatives Recognized in the Consolidated Balance Sheets
The following tables show the fair value and balance sheet location of derivative instruments. Although derivatives subject to master netting arrangements are netted on the Consolidated Balance Sheets, the fair values presented below are shown gross and cash collateral on the derivatives has not been netted against the fair values shown.
Derivative AssetsDecember 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$28 $9 $7 $7 $— $— $11 $— 
Noncurrent28 12 16 16 — — — — 
Total Derivative Assets – Commodity Contracts$56 $21 $23 $23 $— $— $11 $— 
Interest Rate Contracts
Designated as Hedging Instruments
Current$25 $— $— $— $— $— $— $— 
Noncurrent20 — — — — — — — 
Not Designated as Hedging Instruments
Current$63 $34 $29 $29 $1 $— $— $— 
Noncurrent62 46 15 — 14 — 1 — 
Total Derivative Assets – Interest Rate Contracts$170 $80 $44 $29 $15 $— $1 $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Noncurrent156 — — — — — — — 
Total Derivative Assets – Foreign Currency Contracts
$156 $— $— $— $— $— $— $— 
Total Derivative Assets$382 $101 $67 $52 $15 $— $12 $— 
Derivative LiabilitiesDecember 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$104 $53 $25 $25 $— $— $7 $19 
Noncurrent106 32 21 21 — — — 53 
Total Derivative Liabilities – Commodity Contracts$210 $85 $46 $46 $— $— $7 $72 
Interest Rate Contracts
Not Designated as Hedging Instruments
Current— 3 (4)(5)1 — 2 — 
Noncurrent7 — 6 6 — 1 — — 
Total Derivative Liabilities – Interest Rate Contracts$7 $3 $2 $1 $1 $1 $2 $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Current$27 $— $— $— $— $— $— $— 
Total Derivative Liabilities – Foreign Currency Contracts$27 $— $— $— $— $— $— $— 
Total Derivative Liabilities$244 $88 $48 $47 $1 $1 $9 $72 
Derivative AssetsDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$49 $20 $17 $17 $— $1 $8 $1 
Noncurrent60 29 32 32 — — — — 
Total Derivative Assets – Commodity Contracts$109 $49 $49 $49 $— $1 $8 $1 
Interest Rate Contracts
Designated as Hedging Instruments
Current$108 $— $— $— $— $— $— $— 
Noncurrent52 — — — — — — — 
Not Designated as Hedging Instruments
Current$110 $19 $55 $44 $11 $— $36 $— 
Noncurrent50 26 23 16 7 — — — 
Total Derivative Assets – Interest Rate Contracts$320 $45 $78 $60 $18 $— $36 $— 
Foreign Currency Contracts
 Designated as Hedging Instruments
Noncurrent
$5 $— $— $— $— $— $— $— 
Total Derivative Assets – Foreign Currency Contracts
$5 $— $— $— $— $— $— $— 
Total Derivative Assets$434 $94 $127 $109 $18 $1 $44 $1 
Derivative LiabilitiesDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Not Designated as Hedging Instruments
Current$108 $57 $32 $32 $— $— $3 $16 
Noncurrent134 31 24 24 — — — 78 
Total Derivative Liabilities – Commodity Contracts$242 $88 $56 $56 $— $— $3 $94 
Interest Rate Contracts
Not Designated as Hedging Instruments
Current2 — 2 1 1 — — — 
Noncurrent1 — — — — 1 — — 
Total Derivative Liabilities – Interest Rate Contracts$3 $— $2 $1 $1 $1 $— $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Current$35 $— $— $— $— $— $— $— 
Noncurrent39 — — — — — — — 
Total Derivative Liabilities – Foreign Currency Contracts$74 $— $— $— $— $— $— $— 
Total Derivative Liabilities$319 $88 $58 $57 $1 $1 $3 $94 
Offsetting Assets
The following tables present the line items on the Consolidated Balance Sheets where derivatives are reported. Substantially all of Duke Energy's outstanding derivative contracts are subject to enforceable master netting arrangements. The amounts shown are calculated by counterparty. Accounts receivable or accounts payable may also be available to offset exposures in the event of bankruptcy. These amounts are not included in the tables below.
Derivative AssetsDecember 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$116 $43 $36 $36 $1 $— $11 $— 
Offset(16)(9)(7)(7)— — — — 
Net amounts presented in Current Assets: Other$100 $34 $29 $29 $1 $— $11 $— 
Noncurrent
Gross amounts recognized$266 $58 $31 $16 $14 $— $1 $— 
Offset(22)(11)(11)(11)— — — — 
Net amounts presented in Other Noncurrent Assets: Other$244 $47 $20 $5 $14 $— $1 $— 
Derivative AssetsDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$267 $39 $72 $61 $11 $1 $44 $1 
Offset(29)(15)(14)(14)— — — — 
Net amounts presented in Current Assets: Other$238 $24 $58 $47 $11 $1 $44 $1 
Noncurrent
Gross amounts recognized$167 $55 $55 $48 $7 $— $— $— 
Offset(37)(19)(17)(17)— — — — 
Net amounts presented in Other Noncurrent Assets: Other$130 $36 $38 $31 $7 $— $— $— 
Offsetting Liabilities
Derivative LiabilitiesDecember 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$131 $56 $21 $20 $1 $— $9 $19 
Offset(16)(9)(7)(7)— — — — 
Cash collateral posted(8)(1)— — — — (7)— 
Net amounts presented in Current Liabilities: Other$107 $46 $14 $13 $1 $— $2 $19 
Noncurrent
Gross amounts recognized$113 $32 $27 $27 $— $1 $— $53 
Offset(22)(11)(11)(11)— — — — 
Cash collateral posted(1)(1)— — — — — — 
Net amounts presented in Other Noncurrent Liabilities: Other$90 $20 $16 $16 $— $1 $— $53 
Derivative LiabilitiesDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$145 $57 $34 $33 $1 $— $3 $16 
Offset(29)(15)(14)(14)— — — — 
Cash collateral posted(3)(2)— — — — (1)— 
Net amounts presented in Current Liabilities: Other$113 $40 $20 $19 $1 $— $2 $16 
Noncurrent
Gross amounts recognized$174 $31 $24 $24 $— $1 $— $78 
Offset(37)(19)(17)(17)— — — — 
Cash collateral posted(4)(4)— — — — — — 
Net amounts presented in Other Noncurrent Liabilities: Other$133 $8 $7 $7 $— $1 $— $78 
Derivative Contracts with Contingent Credit Features The following tables show information with respect to derivative contracts that are in a net liability position and contain objective credit risk-related payment provisions.
December 31, 2025
DukeDuke
DukeEnergyProgressEnergy
(in millions)EnergyCarolinasEnergyProgress
Aggregate fair value of derivatives in a net liability position$102 $59 $43 $43 
Fair value of collateral already posted2 2 — — 
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered100 57 43 43 
December 31, 2024
DukeDuke
DukeEnergyProgressEnergy
(in millions)EnergyCarolinasEnergyProgress
Aggregate fair value of derivatives in a net liability position$101 $52 $49 $49 
Fair value of collateral already posted6 6 — — 
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered95 46 49 49 
v3.25.4
Investments in Debt and Equity Securities (Tables)
 12 Months Ended
Dec. 31, 2025
Investment [Line Items]  
Summary of Investments in Debt and Equity Securities
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
December 31, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedUnrealizedUnrealized
HoldingHoldingEstimatedHoldingHoldingEstimated
(in millions) GainsLossesFair ValueGainsLossesFair Value
NDTF       
Cash and cash equivalents $— $— $175 $— $— $139 
Equity securities 6,041 14 8,519 5,753 61 8,233 
Corporate debt securities 17 18 1,056 6 33 673 
Municipal bonds 4 13 366 2 14 342 
U.S. government bonds 31 39 2,487 3 84 1,806 
Other debt securities 3 5 284 1 8 239 
Total NDTF Investments$6,096 $89 $12,887 $5,765 $200 $11,432 
Other Investments       
Cash and cash equivalents $— $— $53 $— $— $47 
Equity securities 57 — 139 39 4 160 
Corporate debt securities — 2 75 — 5 79 
Municipal bonds — 1 67 — 1 83 
U.S. government bonds — 4 59 — 5 59 
Other debt securities — 2 45 — 4 45 
Total Other Investments$57 $9 $438 $39 $19 $473 
Total Investments $6,153 $98 $13,325 $5,804 $219 $11,905 
Schedule of Realized Gain (Loss)
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2025, 2024 and 2023, were as follows.
Years Ended December 31,
(in millions)202520242023
FV-NI:
Realized gains$1,174 $600 $129 
Realized losses145 85 146 
AFS:
Realized gains67 28 44 
Realized losses77 67 140 
Investments Classified by Contractual Maturity Date
The table below summarizes the maturity date for debt securities.
December 31, 2025
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndiana
Due in one year or less$108 $15 $92 $17 $75 $1 
Due after one through five years1,130 564 501 473 28 8 
Due after five through 10 years955 513 395 378 17 6 
Due after 10 years2,246 1,257 880 830 50 14 
Total$4,439 $2,349 $1,868 $1,698 $170 $29 
Duke Energy Carolinas  
Investment [Line Items]  
Summary of Investments in Debt and Equity Securities
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
 December 31, 2025 December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedUnrealizedUnrealized
HoldingHoldingEstimatedHoldingHoldingEstimated
(in millions) GainsLossesFair ValueGainsLossesFair Value
NDTF       
Cash and cash equivalents $— $— $92 $— $— $62 
Equity securities 3,533 10 4,896 3,386 33 4,751 
Corporate debt securities 9 15 662 2 27 401 
Municipal bonds — 5 42 — 4 36 
U.S. government bonds 16 26 1,403 — 50 991 
Other debt securities 3 5 242 1 8 223 
Total NDTF Investments$3,561 $61 $7,337 $3,389 $122 $6,464 
Schedule of Realized Gain (Loss)
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2025, 2024 and 2023, were as follows.
Years Ended December 31,
(in millions)202520242023
FV-NI:
Realized gains$693 $298 $82 
Realized losses77 40 79 
AFS:
Realized gains51 14 22 
Realized losses57 40 65 
Progress Energy  
Investment [Line Items]  
Summary of Investments in Debt and Equity Securities
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
December 31, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedUnrealizedUnrealized
HoldingHoldingEstimatedHoldingHoldingEstimated
(in millions) GainsLossesFair ValueGainsLossesFair Value
NDTF       
Cash and cash equivalents $— $— $83 $— $— $77 
Equity securities 2,508 4 3,623 2,367 28 3,482 
Corporate debt securities 8 3 394 4 6 272 
Municipal bonds 4 8 324 2 10 306 
U.S. government bonds 15 13 1,084 3 34 815 
Other debt securities — — 42 — — 16 
Total NDTF Investments$2,535 $28 $5,550 $2,376 $78 $4,968 
Other Investments       
Cash and cash equivalents $— $— $34 $— $— $23 
Municipal bonds — — 24 — — 24 
Total Other Investments$— $— $58 $— $— $47 
Total Investments $2,535 $28 $5,608 $2,376 $78 $5,015 
Schedule of Realized Gain (Loss)
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2025, 2024 and 2023, were as follows.
Years Ended December 31,
(in millions)202520242023
FV-NI:
Realized gains$481 $302 $47 
Realized losses68 45 67 
AFS:
Realized gains16 14 22 
Realized losses20 27 75 
Duke Energy Progress  
Investment [Line Items]  
Summary of Investments in Debt and Equity Securities
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
 December 31, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedUnrealizedUnrealized
HoldingHoldingEstimatedHoldingHoldingEstimated
(in millions) GainsLossesFair ValueGainsLossesFair Value
NDTF       
Cash and cash equivalents $— $— $71 $— $— $54 
Equity securities 2,380 4 3,485 2,256 28 3,362 
Corporate debt securities 8 3 375 4 6 256 
Municipal bonds 4 8 324 2 10 306 
U.S. government bonds 14 10 958 3 26 645 
Other debt securities — — 41 — — 14 
Total NDTF Investments$2,406 $25 $5,254 $2,265 $70 $4,637 
Other Investments    
Cash and cash equivalents $— $— $24 $— $— $16 
Total Other Investments$— $— $24 $— $— $16 
Total Investments $2,406 $25 $5,278 $2,265 $70 $4,653 
Schedule of Realized Gain (Loss)
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2025, 2024 and 2023, were as follows.
Years Ended December 31,
(in millions)202520242023
FV-NI:
Realized gains$478 $288 $44 
Realized losses67 44 66 
AFS:
Realized gains15 13 20 
Realized losses19 26 70 
Duke Energy Florida  
Investment [Line Items]  
Summary of Investments in Debt and Equity Securities
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
 December 31, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedUnrealizedUnrealized
HoldingHoldingEstimatedHoldingHoldingEstimated
(in millions) GainsLossesFair ValueGainsLossesFair Value
NDTF        
Cash and cash equivalents $— $— $12 $— $— $23 
Equity securities 128 — 138 111 — 120 
Corporate debt securities — — 19 — — 16 
U.S. government bonds 1 3 126 — 8 170 
Other debt securities — — 1 — — 2 
Total NDTF Investments(a)
$129 $3 $296 $111 $8 $331 
Other Investments    
Cash and cash equivalents $— $— $5 $— $— $3 
Municipal bonds — — 24 — — 24 
Total Other Investments$— $— $29 $— $— $27 
Total Investments $129 $3 $325 $111 $8 $358 
(a)    During the years ended December 31, 2025, and 2024, Duke Energy Florida received reimbursements from the NDTF for costs related to ongoing decommissioning activity of Crystal River Unit 3.
Duke Energy Indiana  
Investment [Line Items]  
Summary of Investments in Debt and Equity Securities
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt investments are classified as AFS.
 December 31, 2025December 31, 2024
GrossGrossGross
UnrealizedUnrealizedUnrealized
HoldingHoldingEstimatedHoldingEstimated
(in millions) GainsLossesFair ValueLossesFair Value
Investments      
Cash and cash equivalents$— $— $— $— $1 
Equity securities 6 — 53 4 89 
Corporate debt securities — — 1 — 6 
Municipal bonds — 1 25 1 43 
U.S. government bonds — — 3 — 7 
Total Investments $6 $1 $82 $5 $146 
v3.25.4
Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement Amounts for Assets and Liabilities
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. Derivative amounts in the tables below for all Duke Energy Registrants exclude cash collateral, which is disclosed in Note 15. See Note 16 for additional information related to investments by major security type for the Duke Energy Registrants.
 December 31, 2025
(in millions)Total Fair ValueLevel 1Level 2Level 3Not Categorized
NDTF cash and cash equivalents$175 $175 $— $— $— 
NDTF equity securities8,519 8,494 3 — 22 
NDTF debt securities4,193 1,480 2,713 — — 
Other equity securities139 139 — — — 
Other debt securities246 55 191 — — 
Other cash and cash equivalents53 53 — — — 
Derivative assets382 2 371 9 — 
Total assets13,707 10,398 3,278 9 22 
Derivative liabilities(244)(7)(237)— — 
Net assets
$13,463 $10,391 $3,041 $9 $22 
 December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Level 3Not Categorized
NDTF cash and cash equivalents$139 $139 $— $— $— 
NDTF equity securities8,233 8,203 2 — 28 
NDTF debt securities3,060 1,022 2,038 — — 
Other equity securities160 160 — — — 
Other debt securities266 52 214 — — 
Other cash and cash equivalents47 47 — — — 
Derivative assets434 2 423 9 — 
Total assets12,339 9,625 2,677 9 28 
Derivative liabilities(319)(3)(316)— — 
Net assets
$12,020 $9,622 $2,361 $9 $28 
Reconciliation of Assets and Liabilities Measured at Fair Value an a Recurring Basis Using Unobservable Inputs
The following table provides reconciliations of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.
Derivatives (net)
 Years Ended December 31,
(in millions) 20252024
Balance at beginning of period$9 $15 
Purchases, sales, issuances and settlements:
Purchases14 29 
Settlements(6)(46)
Net transfers Out of Level 3(7)— 
Total (losses) gains included on the Consolidated Balance Sheet(1)11 
Balance at end of period$9 $9 
Quantitative Information Table - Level 3
The following tables include quantitative information about the Duke Energy Registrants' derivatives classified as Level 3.
December 31, 2025
Weighted
Fair ValueAverage
Investment Type(in millions)Valuation TechniqueUnobservable InputRangeRange
Duke Energy Indiana
FTRs9 RTO auction pricingFTR price – per MWh(1.00)–14.63 1.13 
Duke Energy
Total Level 3 derivatives$9 
December 31, 2024
Weighted
Fair ValueAverage
Investment Type(in millions)Valuation TechniqueUnobservable InputRangeRange
Duke Energy Ohio
FTRs$1 RTO auction pricingFTR price – per MWh$— –$1.13 $0.48 
Duke Energy Indiana
FTRs8 RTO auction pricingFTR price – per MWh(0.63)–9.24 0.94 
Duke Energy
Total Level 3 derivatives$9 
Schedule of Long-Term Debt Fair Value
The fair value and book value of long-term debt, including current maturities, is summarized in the following table. Estimates determined are not necessarily indicative of amounts that could have been settled in current markets. Fair value of long-term debt uses Level 2 measurements.
 December 31, 2025December 31, 2024
(in millions)Book ValueFair ValueBook ValueFair Value
Duke Energy(a)
$87,212 $79,863 $80,689 $73,440 
Duke Energy Carolinas18,777 16,764 17,490 15,975 
Progress Energy26,848 24,957 24,496 22,548 
Duke Energy Progress13,896 12,445 12,504 11,009 
Duke Energy Florida11,307 10,720 10,348 9,752 
Duke Energy Ohio4,420 4,151 4,165 3,871 
Duke Energy Indiana5,093 4,646 4,798 4,329 
Piedmont4,251 3,960 4,003 3,584 
(a)    Book value of long-term debt includes $921 million and $1.0 billion as of December 31, 2025, and December 31, 2024, of unamortized debt discount and premium, net in purchase accounting adjustments related to the mergers with Progress Energy and Piedmont that are excluded from fair value of long-term debt.
Duke Energy Carolinas  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement Amounts for Assets and Liabilities
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets.
 December 31, 2025
(in millions)Total Fair ValueLevel 1Level 2Not Categorized
NDTF cash and cash equivalents$92 $92 $— $— 
NDTF equity securities4,896 4,871 3 22 
NDTF debt securities2,349 776 1,573 — 
Derivative assets101 — 101 — 
Total assets7,438 5,739 1,677 22 
Derivative liabilities(88)— (88)— 
Net assets$7,350 $5,739 $1,589 $22 
 December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Not Categorized
NDTF cash and cash equivalents$62 $62 $— $— 
NDTF equity securities4,751 4,721 2 28 
NDTF debt securities1,651 520 1,131 — 
Derivative assets94 — 94 — 
Total assets6,558 5,303 1,227 28 
Derivative liabilities(88)— (88)— 
Net assets$6,470 $5,303 $1,139 $28 
Progress Energy  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement Amounts for Assets and Liabilities
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets.
 December 31, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
NDTF cash and cash equivalents$83 $83 $— $77 $77 $— 
NDTF equity securities3,623 3,623 — 3,482 3,482 — 
NDTF debt securities1,844 704 1,140 1,409 502 907 
Other debt securities24 — 24 24 — 24 
Other cash and cash equivalents34 34 — 23 23 — 
Derivative assets67 — 67 127 — 127 
Total assets5,675 4,444 1,231 5,142 4,084 1,058 
Derivative liabilities(48)— (48)(58)— (58)
Net assets$5,627 $4,444 $1,183 $5,084 $4,084 $1,000 
Duke Energy Progress  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement Amounts for Assets and Liabilities
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets.
 December 31, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
NDTF cash and cash equivalents$71 $71 $— $54 $54 $— 
NDTF equity securities3,485 3,485 — 3,362 3,362 — 
NDTF debt securities1,698 597 1,101 1,221 365 856 
Other cash and cash equivalents24 24 — 16 16 — 
Derivative assets52 — 52 109 — 109 
Total assets5,330 4,177 1,153 4,762 3,797 965 
Derivative liabilities(47)— (47)(57)— (57)
Net assets$5,283 $4,177 $1,106 $4,705 $3,797 $908 
Duke Energy Florida  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement Amounts for Assets and Liabilities
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets.
 December 31, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
NDTF cash and cash equivalents$12 $12 $— $23 $23 $— 
NDTF equity securities138 138 — 120 120 — 
NDTF debt securities146 107 39 188 137 51 
Other debt securities24 — 24 24 — 24 
Other cash and cash equivalents5 5 — 3 3 — 
Derivative assets15 — 15 18 — 18 
Total assets340 262 78 376 283 93 
Derivative liabilities(1)— (1)(1)— (1)
Net assets$339 $262 $77 $375 $283 $92 
Duke Energy Indiana  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement Amounts for Assets and Liabilities
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets.
 December 31, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Level 3Total Fair ValueLevel 1Level 2Level 3
Other equity securities$53 $53 $— $— $89 $89 $— $— 
Other debt securities29 — 29 — 56 — 56 — 
Other cash equivalents— — — — 1 1 — — 
Derivative assets12 2 1 9 44 — 36 8 
Total assets94 55 30 9 190 90 92 8 
Derivative liabilities(9)(7)(2)— (3)(3)— — 
Net assets$85 $48 $28 $9 $187 $87 $92 $8 
Reconciliation of Assets and Liabilities Measured at Fair Value an a Recurring Basis Using Unobservable Inputs
The following table provides a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.
 Derivatives (net)
 Years Ended December 31,
(in millions)20252024
Balance at beginning of period$8 $13 
Purchases, sales, issuances and settlements:
Purchases12 27 
Settlements(4)(42)
Net transfers In (Out) of Level 3 due to observability of inputs(7)— 
Total gains included on the Consolidated Balance Sheet
— 10 
Balance at end of period$9 $8 
Piedmont  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement Amounts for Assets and Liabilities
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets.
 December 31, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
Derivative assets$— $— $— $1 $1 $— 
Derivative liabilities(72)— (72)(94)— (94)
Net (liabilities) assets$(72)$— $(72)$(93)$1 $(94)
v3.25.4
Variable Interest Entities (Tables)
 12 Months Ended
Dec. 31, 2025
Consolidated VIEs  
Variable Interest Entity [Line Items]  
Schedule of Variable Interest Entities
The following table summarizes the amounts and expiration dates of the credit facilities and associated restricted receivables reported on the Consolidated Balance Sheets.
Duke EnergyDuke Energy
CarolinasProgress
(in millions)DERFDEPR
Expiration date
(a)
(b)
Credit facility amount
(a)
(b)
Amounts borrowed at December 31, 2025— — 
Amounts borrowed at December 31, 2024500 400 
Restricted Receivables at December 31, 2025— — 
Restricted Receivables at December 31, 20241,054 835 
(a)    In January 2025, Duke Energy Carolinas repaid all outstanding DERF borrowing and terminated the related $500 million DERF credit facility.
(b)    In March 2025, Duke Energy repaid all the outstanding DEPR borrowing and terminated the related $400 million DEPR credit facility.
Consolidated VIEs | Duke Energy Florida  
Variable Interest Entity [Line Items]  
Schedule of Variable Interest Entities
The following table summarizes the impact of this VIE on Duke Energy Florida's Consolidated Balance Sheets.
December 31,
(in millions)
20252024
Inventory
$669 494
Accounts Payable
289208
Consolidated VIEs | DEFPF  
Variable Interest Entity [Line Items]  
Schedule of Variable Interest Entities
The following table summarizes the impact of DEFPF on Duke Energy Florida's Consolidated Balance Sheets.
December 31,
(in millions)20252024
Receivables of VIEs$3 $— 
Regulatory Assets: Current62 61 
Current Assets: Other34 35 
Other Noncurrent Assets: Regulatory assets682 741 
Other Noncurrent Assets: Other
7 7 
Current Liabilities: Other7 8 
Current maturities of long-term debt61 59 
Long-Term Debt712 773 
Consolidated VIEs | DECNCSF and DEPNCSF  
Variable Interest Entity [Line Items]  
Schedule of Variable Interest Entities
The following table summarizes the impact of these VIEs on Duke Energy Carolinas’ and Duke Energy Progress’ Consolidated Balance Sheets.
December 31, 2025
Duke Energy Carolinas
Duke Energy Progress
(in millions)
DECNCSF
DECNCSFII
DECSCSF
DEPNCSF
DEPNCSFII
DEPSCSF
Receivables of VIEs1 3 — 4 3 2 
Regulatory Assets: Current12 29 31 39 23 8 
Current Assets: Other9 3 — 30 3 5 
Other Noncurrent Assets: Regulatory assets179 550 528 583 435 151 
Other Noncurrent Assets: Other1 3 3 4 2 1 
Current maturities of long-term debt11 2 3 35 1 5 
Long-Term Debt188 575 553 611 455 158 
December 31, 2024
Duke Energy Carolinas
Duke Energy Progress
(in millions)
DECNCSF
DEPNCSF
DEPSCSF
Regulatory Assets: Current$12 $39 $8 
Current Assets: Other9 27 13 
Other Noncurrent Assets: Regulatory assets189 620 155 
Other Noncurrent Assets: Other1 4 1 
Current maturities of long-term debt10 34 9 
Current Liabilities: Other2 10 7 
Long-Term Debt198 646 163 
Non-consolidated VIEs | Cinergy Receivables [Member]  
Variable Interest Entity [Line Items]  
Schedule of Variable Interest Entities
The following table shows sales and cash flows related to receivables sold and reflects CRC activity prior to its termination in March 2024.
 Duke Energy OhioDuke Energy Indiana
 Years Ended December 31,Years Ended December 31,
(in millions)2024202320242023
Sales    
Receivables sold$474 $2,578 $473 $3,223 
Loss recognized on sale7 34 6 39 
Cash flows
Cash proceeds from receivables sold478 2,591 523 3,294 
Collection fees received— 1 — 2 
Return received on retained interests4 19 4 25 
v3.25.4
Revenue (Tables)
 12 Months Ended
Dec. 31, 2025
Revenue from Contract with Customer [Abstract]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Supplemental requirements contracts that include contracted blocks of energy and capacity at contractually fixed prices have the following estimated remaining performance obligations as of December 31, 2025:
Remaining Performance Obligations
(in millions)20262027202820292030ThereafterTotal
Duke Energy Carolinas$12 $12 $12 $— $— $— $36 
Progress Energy43 43 13 13 14 29 155 
Duke Energy Progress6 6 6 6 7 14 45 
Duke Energy Florida37 37 7 7 7 15 110 
Duke Energy Indiana17 15 5 — — — 37 
Estimated remaining performance obligations as of December 31, 2025, are as follows:
Remaining Performance Obligations
(in millions)20262027202820292030ThereafterTotal
Piedmont$54 $48 $45 $44 $42 $109 $342 
Disaggregation of Revenue Disaggregated revenues are presented as follows:
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
Residential$13,756 $4,124 $7,067 $2,965 $4,102 $1,116 $1,450 $— 
Commercial
8,337 2,885 3,825 1,732 2,093 603 1,024 — 
Industrial3,423 1,422 1,065 750 315 142 794 — 
Wholesale2,402 621 1,475 1,353 122 92 218 — 
Other revenues945 449 870 512 358 68 25 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$28,863 $9,501 $14,302 $7,312 $6,990 $2,021 $3,511 $— 
Gas Utilities and Infrastructure
Residential$1,596 $— $— $— $— $496 $— $1,100 
Commercial808 — — — — 181 — 627 
Industrial190 — — — — 44 — 146 
Power Generation— — — — — — — 34 
Other revenues256 — — — — 25 — 255 
Total Gas Utilities and Infrastructure revenue from contracts with customers$2,850 $— $— $— $— $746 $— $2,162 
Other
Revenue from contracts with customers$28 $— $— $— $— $— $— $— 
Total revenue from contracts with customers$31,741 $9,501 $14,302 $7,312 $6,990 $2,767 $3,511 $2,162 
Other revenue sources(a)
$496 $212 $207 $74 $115 $30 $33 $75 
Total revenues$32,237 $9,713 $14,509 $7,386 $7,105 $2,797 $3,544 $2,237 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
Residential$12,901 $4,150 $6,592 $2,872 $3,720 $1,009 $1,149 $— 
Commercial
8,207 3,080 3,718 1,754 1,964 590 818 — 
Industrial3,427 1,488 1,066 742 324 149 724 — 
Wholesale2,205 547 1,414 1,268 146 51 194 — 
Other revenues1,029 350 674 343 331 89 107 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$27,769 $9,615 $13,464 $6,979 $6,485 $1,888 $2,992 $— 
Gas Utilities and Infrastructure
Residential$1,320 $— $— $— $— $427 $— $893 
Commercial639 — — — — 153 — 486 
Industrial158 — — — — 33 — 125 
Power Generation— — — — — — — 33 
Other revenues126 — — — — 26 — 100 
Total Gas Utilities and Infrastructure revenue from contracts with customers$2,243 $— $— $— $— $639 $— $1,637 
Other
Revenue from contracts with customers$38 $— $— $— $— $— $— $— 
Total revenue from contracts with customers$30,050 $9,615 $13,464 $6,979 $6,485 $2,527 $2,992 $1,637 
Other revenue sources(a)
$307 $103 $169 $38 $110 $18 $48 $92 
Total revenues$30,357 $9,718 $13,633 $7,017 $6,595 $2,545 $3,040 $1,729 
Year Ended December 31, 2023
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
Residential$12,098 $3,409 $6,510 $2,540 $3,970 $947 $1,233 $— 
Commercial
7,895 2,670 3,762 1,588 2,174 552 911 — 
Industrial3,416 1,334 1,105 733 372 191 786 — 
Wholesale2,175 492 1,388 1,240 148 46 248 — 
Other revenues962 318 590 325 265 93 157 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$26,546 $8,223 $13,355 $6,426 $6,929 $1,829 $3,335 $— 
Gas Utilities and Infrastructure
Residential$1,226 $— $— $— $— $435 $— $792 
Commercial605 — — — — 154 — 450 
Industrial141 — — — — 26 — 115 
Power Generation— — — — — — — 31 
Other revenues119 — — — — 24 — 95 
Total Gas Utilities and Infrastructure revenue from contracts with customers$2,091 $— $— $— $— $639 $— $1,483 
Other
Revenue from contracts with customers$37 $— $— $— $— $— $— $— 
Total revenue from contracts with customers$28,674 $8,223 $13,355 $6,426 $6,929 $2,468 $3,335 $1,483 
Other revenue sources(a)
$386 $65 $189 $62 $107 $39 $64 $145 
Total revenues$29,060 $8,288 $13,544 $6,488 $7,036 $2,507 $3,399 $1,628 
(a)    Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.
Accounts Receivable, Allowance for Credit Loss
The following table presents the reserve for credit losses for trade and other receivables.
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Balance at December 31, 2022$213 $68 $81 $44 $36 $6 $4 $11 
Write-Offs(162)(71)(84)(41)(42)— — (8)
Credit Loss Expense99 35 48 12 37 3 1 5 
Other Adjustments52 24 29 29 — — — — 
Balance at December 31, 2023$202 $56 $74 $44 $31 $9 $5 $8 
Write-Offs(131)(55)(73)(45)(28)— — (3)
Credit Loss Expense97 39 51 25 26 3 2 2 
Other Adjustments39 29 21 20 — 31 8 — 
Balance at December 31, 2024$207 $69 $73 $44 $29 $43 $15 $7 
Write-Offs(164)(52)(62)(37)(25)(21)(13)(17)
Credit Loss Expense106 26 39 16 23 15 13 14 
Other Adjustments45 12 15 15 — 14 — 2 
Balance at December 31, 2025$194 $55 $65 $38 $27 $51 $15 $6 
v3.25.4
Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2025
Equity [Abstract]  
Schedule of Earnings Per Share
The following table presents Duke Energy’s basic and diluted EPS calculations, the weighted average number of common shares outstanding and common and preferred share dividends declared.
Years Ended December 31,
(in millions, except per share amounts)202520242023
Net Income available to Duke Energy common stockholders$4,912 $4,402 $2,735 
Less: Income (Loss) from discontinued operations attributable to Duke Energy common stockholders
1 7 (1,391)
Accumulated preferred stock dividends adjustment— 14 — 
Less: Impact of participating securities6 6 6 
Income from continuing operations available to Duke Energy common stockholders$4,905 $4,403 $4,120 
Income (Loss) from discontinued operations, net of tax
$1 $10 $(1,455)
Add: Loss (Income) attributable to NCI
— (3)64 
Income (Loss) from discontinued operations attributable to Duke Energy common stockholders
$1 $7 $(1,391)
Weighted average common shares outstanding – basic and diluted
777 772 771 
EPS from continuing operations available to Duke Energy common stockholders
Basic and Diluted(a)
$6.31 $5.70 $5.35 
Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders
   Basic and Diluted(a)
$— $0.01 $(1.81)
Potentially dilutive items excluded from the calculation(b)
2 2 2 
Dividends declared per common share$4.22 $4.14 $4.06 
Dividends declared on Series A preferred stock per depositary share(c)
$1.437 $1.437 $1.437 
Dividends declared on Series B preferred stock per share(d)
$— $48.750 $48.750 
(a)    For the year ended December 31, 2025, the convertible notes were included in the calculation of diluted EPS, but the impact was immaterial. For the years ended December 31, 2024, and 2023, the convertible notes were excluded from the calculations of diluted EPS because the effect was antidilutive.
(b)    Performance stock awards were not included in the dilutive securities calculation because the performance measures related to the awards had not been met.
(c)    5.75% Series A Cumulative Redeemable Perpetual Preferred Stock dividends are payable quarterly in arrears on the 16th day of March, June, September and December. The preferred stock has a $25 liquidation preference per depositary share.
(d)    4.875% Series B Fixed-Rate Reset Cumulative Redeemable Perpetual Preferred Stock dividends were payable semiannually in arrears on the 16th day of March and September. The preferred stock was redeemed on September 16, 2024.
Schedule of ATM Equity Issuances Pursuant to Forward Contracts
The following table shows ATM equity issuances pursuant to forward contracts executed during February and March 2025.
Tranche
Shares Priced
Initial Forward Price
1
1,710,979$116.02 
2
1,262,618$117.94 
3
1,264,410$117.79 
Total
4,238,007
v3.25.4
Severance (Tables)
 12 Months Ended
Dec. 31, 2025
Restructuring and Related Activities [Abstract]  
Schedule of Severance Expense
The following table presents the direct and allocated severance and related charges accrued by the Duke Energy Registrants within Operation, maintenance and other on the Consolidated Statements of Operations.
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Year Ended December 31, 2025(a)
$(8)$(2)$(5)$(2)$(3)$— $— $— 
Year Ended December 31, 2024(a)
(28)(11)(9)(5)(4)(2)(4)(2)
Year Ended December 31, 2023(b)
102 53 33 21 12 3 6 4 
(a)    Primarily related to adjustments associated with 2023 severance charges.
(b)    Primarily related to the severance for 682 employees.
Schedule of Severance Liability
The table below presents the severance liability for past and ongoing severance plans including the plans described above.
DukeDukeDuke
Duke
Duke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)Energy
Carolinas
EnergyProgressFloridaOhioIndianaPiedmont
Balance at December 31, 2023
$102 $35 $16 $8 $8 $1 $4 $2 
Provision/Adjustments(28)(6)(3)(1)(2)(1)(3)(1)
Cash Reductions(55)(21)(11)(6)(5)— (1)(1)
Balance at December 31, 2024$19 $8 $2 $1 $1 $— $— $— 
Provision/Adjustments(8)(3)(1)(1)— — — — 
Cash Reductions(11)(5)(1)— (1)— — — 
Balance at December 31, 2025$— $— $— $— $— $— $— $— 
v3.25.4
Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of Total Stock-Based Compensation Expense, net of tax
The following table summarizes the total expense recognized by the Duke Energy Registrants, net of tax, for stock-based compensation.
 Years Ended December 31,
(in millions)202520242023
Duke Energy$74 $70 $71 
Duke Energy Carolinas27 25 25 
Progress Energy29 28 28 
Duke Energy Progress18 17 17 
Duke Energy Florida11 11 11 
Duke Energy Ohio6 5 5 
Duke Energy Indiana8 7 7 
Piedmont4 4 4 
Schedule of Stock-Based Compensation Expense
Duke Energy's pretax stock-based compensation costs, the tax benefit associated with stock-based compensation expense and stock-based compensation costs capitalized are included in the following table.
 Years Ended December 31,
(in millions)202520242023
RSU awards$58 $49 $54 
Performance awards44 47 43 
Pretax stock-based compensation cost$102 $96 $97 
Stock-based compensation costs capitalized7 6 6 
Stock-based compensation expense$95 $90 $91 
Tax benefit associated with stock-based compensation expense$21 $20 $20 
Schedule of Share-based Compensation, Restricted Stock Units Award Activity The following table includes information related to RSU awards.
 Years Ended December 31,
 202520242023
Shares granted (in thousands) 564 598 670 
Fair value (in millions)$66 $59 $65 
The following table summarizes information about RSU awards outstanding.
Weighted Average
SharesGrant Date Fair Value
 (in thousands)(per share)
Outstanding at December 31, 2024
1,059 $98 
Granted564 117 
Vested(602)99 
Forfeited(59)109 
Outstanding at December 31, 2025
962 108 
RSU awards expected to vest897 108 
Schedule of Performance Awards
The following table includes information related to stock-based performance awards.
 Years Ended December 31,
 202520242023
Shares granted assuming target performance (in thousands)338 440 422 
Fair value (in millions)$41 $42 $42 
Schedule of Nonvested Performance-based Units Activity
The following table summarizes information about stock-based performance awards outstanding and assumes payout at the target level.
Weighted Average
SharesGrant Date Fair Value
 (in thousands)(per share)
Outstanding at December 31, 2024
1,187 $98 
Granted338 122 
Vested(382)99 
Forfeited(36)116 
Outstanding at December 31, 2025
1,107 104 
Stock-based performance awards expected to vest1,079 104 
v3.25.4
Employee Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2025
Defined Benefit Plan Disclosure [Line Items]  
Pension Plan Contributions The following table includes information related to the Duke Energy Registrants’ contributions to its qualified defined benefit pension plans.
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Contributions Made:
2025$100 $27 $23 $14 $10 $6 $8 $3 
2024100 26 23 14 9 5 8 3 
2023100 26 22 13 9 5 8 3 
Fair Value and Allocation of Plan Assets
The following table includes the target asset allocations by asset class at December 31, 2025, and the actual asset allocations for the RCBP assets.
Actual Allocation at
TargetDecember 31,
Allocation20252024
Global equity securities36 %37 %44 %
Global private equity securities1 %1 %1 %
Debt securities45 %45 %33 %
Return seeking debt securities6 %5 %7 %
Hedge funds5 %5 %5 %
Real assets and cash
7 %7 %10 %
Total100 %100 %100 %
The following table includes the target asset allocations by asset class at December 31, 2025, and the actual asset allocations for the DELPP assets.
Actual Allocation at
TargetDecember 31,
Allocation20252024
Global equity securities22 %23 %15 %
Debt securities65 %64 %79 %
Return seeking debt securities4 %3 %2 %
Hedge funds5 %5 %— %
Real assets and cash
4 %5 %4 %
Total100 %100 %100 %
The following table presents target and actual asset allocations for the VEBA trusts at December 31, 2025.
Actual Allocation at
TargetDecember 31,
Allocation20252024
U.S. equity securities29 %32 %34 %
Non-U.S. equity securities14 %17 %15 %
Real estate4 %7 %7 %
Debt securities48 %28 %31 %
Cash5 %16 %13 %
Total100 %100 %100 %
The following tables provide the fair value measurement amounts for the Duke Energy Corporation Master Retirement Trust qualified pension and other post-retirement assets.
December 31, 2025
Total FairNot
(in millions)ValueLevel 1Level 2Level 3
Categorized(b)
Equity securities$2,630 $2,428 $202 $— $— 
Corporate debt securities2,163 — 2,163 — — 
Short-term investment funds355 — 355 — — 
Partnership interests80 — — 80 — 
Hedge funds301 — — — 301 
U.S. government securities1,609 — 1,609 — — 
Governments bonds – foreign133 — 133 — — 
Cash30 30 — — — 
Government and commercial mortgage-backed securities
1 — 1 — — 
Net pending transactions and other investments(6)(7)1 — — 
Total assets(a)
$7,296 $2,451 $4,464 $80 $301 
(a)    Progress Energy, Duke Energy Carolinas, Duke Energy Florida, Duke Energy Progress, Duke Energy Indiana, Duke Energy Ohio and Piedmont were allocated approximately 34%, 26%, 19%, 15%, 7%, 4% and 4% respectively, of the Duke Energy Corporation Master Retirement Trust at December 31, 2025. Accordingly, all amounts included in the table above are allocable to the Subsidiary Registrants using these percentages.
(b)    Certain investments that are measured at fair value using the net asset value per share practical expedient have not been categorized in the fair value hierarchy.
December 31, 2024
Total FairNot
(in millions)ValueLevel 1Level 2Level 3
Categorized(b)
Equity securities$2,461 $2,216 $231 $— $14 
Corporate debt securities2,415 — 2,415 — — 
Short-term investment funds310 — 310 — — 
Partnership interests68 — — 68 — 
Hedge funds164 — — — 164 
U.S. government securities1,398 — 1,398 — — 
Governments bonds – foreign128 — 128 — — 
Cash15 15 — — — 
Government and commercial mortgage-backed securities
1 — 1 — — 
Net pending transactions and other investments9 11 (2)— — 
Total assets(a)
$6,969 $2,242 $4,481 $68 $178 
(a)    Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont were allocated approximately 27%, 33%, 15%, 18%, 5%, 7% and 3%, respectively, of the Duke Energy Corporation Master Retirement Trust at December 31, 2024. Accordingly, all amounts included in the table above are allocable to the Subsidiary Registrants using these percentages.
(b)    Certain investments that are measured at fair value using the net asset value per share practical expedient have not been categorized in the fair value hierarchy.
The following tables provide the fair value measurement amounts for VEBA trust assets.
December 31, 2025
Total Fair
(in millions)ValueLevel 2
Cash and cash equivalents$4 $4 
Real estate1 1 
Equity securities12 12 
Debt securities7 7 
Total assets$24 $24 
December 31, 2024
Total Fair
(in millions)ValueLevel 2
Cash and cash equivalents$3 $3 
Real estate1 1 
Equity securities10 10 
Debt securities6 6 
Total assets$20 $20 
Master Trust Level 3 Rollforward
The following table provides a reconciliation of beginning and ending balances of Duke Energy Corporation Master Retirement Trust qualified pension and other post-retirement assets at fair value on a recurring basis where the determination of fair value includes significant unobservable inputs (Level 3).
(in millions)20252024
Balance at January 1$68 $76 
Sales(14)(10)
Total gains and other, net26 2 
Balance at December 31$80 $68 
Employee Savings Plan Matching Contributions
The following table includes pretax employer matching contributions made by Duke Energy and expensed by the Subsidiary Registrants.
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Years ended December 31,
2025$272 $90 $77 $47 $30 $7 $17 $15 
2024257 81 72 43 29 6 13 14 
2023238 75 62 40 22 6 13 13 
Pension Plan  
Defined Benefit Plan Disclosure [Line Items]  
Components of Net Periodic Pension Costs
Components of Net Periodic Pension Costs
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$107 $36 $30 $18 $12 $3 $6 $4 
Interest cost on projected benefit obligation329 79 103 46 57 17 26 10 
Expected return on plan assets(597)(153)(220)(98)(120)(24)(40)(20)
Amortization of actuarial loss61 15 19 10 9 2 5 4 
Amortization of prior service credit(13)(1)— — — — (2)(7)
Amortization of settlement charges
25 12 7 5 2 — 2 4 
Net periodic pension costs(a)(b)
$(88)$(12)$(61)$(19)$(40)$(2)$(3)$(5)
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$114 $37 $32 $19 $13 $3 $6 $4 
Interest cost on projected benefit obligation325 78 103 47 56 17 26 9 
Expected return on plan assets(613)(161)(217)(99)(116)(25)(42)(20)
Amortization of actuarial loss36 8 10 6 5 1 4 3 
Amortization of prior service credit(13)(1)— — — — (2)(7)
Amortization of settlement charges(c)
32 12 10 9 2 2 2 5 
Net periodic pension costs(a)(b)
$(119)$(27)$(62)$(18)$(40)$(2)$(6)$(6)
Year Ended December 31, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$117 $38 $33 $19 $13 $3 $6 $4 
Interest cost on projected benefit obligation344 84 107 49 57 18 27 9 
Expected return on plan assets(588)(160)(198)(93)(104)(24)(40)(20)
Amortization of actuarial loss10 2 4 2 2 — 2 — 
Amortization of prior service credit(14)(1)— — — — (2)(7)
Amortization of settlement charges
19 9 5 3 1 — 1 4 
Net periodic pension costs(a)(b)
$(112)$(28)$(49)$(20)$(31)$(3)$(6)$(10)
(a)    Duke Energy amounts exclude $2 million, $2 million and $3 million for the years ended December 2025, 2024 and 2023, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.
(b)    Duke Energy Ohio amounts exclude $1 million, $1 million and $1 million for the years ended December 2025, 2024 and 2023, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.
(c)    Includes settlement charges not deferred as a regulatory asset.
Amounts Recognized in AOCI and Regulatory Assets and Liabilities
Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Regulatory assets, net decrease
$(202)$(46)$(84)$(40)$(43)$(8)$(6)$(9)
Accumulated other comprehensive loss (income)
Deferred income tax benefit
$3 $— $— $— $— $— $— $— 
Amortization of prior year actuarial (losses) gains
(17)— (1)— — — — — 
Net amount recognized in accumulated other comprehensive income
$(14)$— $(1)$— $— $— $— $— 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Regulatory assets, net increase
$147 $39 $33 $1 $31 $11 $6 $16 
Accumulated other comprehensive loss (income)
Deferred income tax benefit
$3 $— $— $— $— $— $— $— 
Amortization of prior year service credit1 — — — — — — — 
Amortization of prior year actuarial losses(12)— 1 — — — (2)— 
Net amount recognized in accumulated other comprehensive income
$(8)$— $1 $— $— $— $(2)$— 
Reconciliation of Funded Status to Net Amount Recognized
Reconciliation of Funded Status to Net Amount Recognized
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Change in Projected Benefit Obligation
Obligation at prior measurement date $5,980 $1,444 $1,875 $838 $1,027 $309 $471 $181 
Service cost100 34 28 17 11 2 5 3 
Interest cost329 79 103 46 57 17 26 10 
Actuarial loss (gain)
86 32 39 16 23 2 8 (2)
Benefits paid(624)(181)(186)(103)(81)(26)(50)(16)
Transfers— — — — — 1 14 — 
Obligation at measurement date$5,871 $1,408 $1,859 $814 $1,037 $305 $474 $176 
Accumulated Benefit Obligation at measurement date$5,839 $1,408 $1,846 $813 $1,023 $300 $469 $176 
Change in Fair Value of Plan Assets
Plan assets at prior measurement date$6,887 $1,781 $2,376 $1,069 $1,290 $309 $498 $214 
Employer contributions100 27 23 14 10 6 8 3 
Actual return on plan assets847 214 323 145 176 31 52 28 
Benefits paid(624)(181)(186)(103)(81)(26)(50)(16)
Transfers— — — — — 1 14 — 
Plan assets at measurement date$7,210 $1,841 $2,536 $1,125 $1,395 $321 $522 $229 
Funded status of plan$1,339 $433 $677 $311 $358 $16 $48 $53 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Change in Projected Benefit Obligation
Obligation at prior measurement date $6,299 $1,514 $1,990 $911 $1,069 $325 $496 $175 
Service cost107 36 30 18 12 3 6 4 
Interest cost325 78 103 47 56 17 26 9 
Actuarial (gain)/loss
(106)(13)(50)(27)(22)(3)(16)5 
Benefits paid(645)(177)(198)(111)(88)(33)(41)(12)
Transfers— 6 — — — — — — 
Obligation at measurement date$5,980 $1,444 $1,875 $838 $1,027 $309 $471 $181 
Accumulated Benefit Obligation at measurement date$5,948 $1,444 $1,861 $838 $1,013 $304 $466 $181 
Change in Fair Value of Plan Assets
Plan assets at prior measurement date$7,162 $1,853 $2,453 $1,120 $1,316 $326 $514 $213 
Employer contributions100 26 23 14 9 5 8 3 
Actual return on plan assets270 73 98 46 53 11 17 10 
Benefits paid(645)(177)(198)(111)(88)(33)(41)(12)
Transfers— 6 — — — — — — 
Plan assets at measurement date$6,887 $1,781 $2,376 $1,069 $1,290 $309 $498 $214 
Funded status of plan$907 $337 $501 $231 $263 $— $27 $33 
Amounts Recognized in the Consolidated Balance Sheet
Amounts Recognized in the Consolidated Balance Sheets
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Prefunded pension(a)
$1,339 $433 $678 $312 $358 $89 $120 $53 
Noncurrent pension liability(b)
$— $— $1 $1 $— $73 $72 $— 
Net asset recognized
$1,339 $433 $677 $311 $358 $16 $48 $53 
Regulatory assets$1,966 $524 $627 $314 $313 $92 $176 $104 
Accumulated other comprehensive income (loss)
Deferred income tax benefit$(21)$— $(1)$— $— $— $— $— 
Net actuarial loss98 — 3 — — — — — 
Net amounts recognized in accumulated other comprehensive income
$77 $— $2 $— $— $— $— $— 
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Prefunded pension(a)
$907 $337 $501 $231 $263 $74 $101 $33 
Noncurrent pension liability(b)
$— $— $— $— $— $74 $74 $— 
Net asset recognized
$907 $337 $501 $231 $263 $— $27 $33 
Regulatory assets$2,168 $570 $711 $354 $356 $100 $182 $113 
Accumulated other comprehensive (income) loss
Deferred income tax benefit$(24)$— $(1)$— $— $— $— $— 
Net actuarial loss115 — 4 — — — — — 
Net amounts recognized in accumulated other comprehensive income
$91 $— $3 $— $— $— $— $— 
(a)    Included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets.
(b)    Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets.
Information for Plans with Accumulated Benefit Obligation in Excess of Plan Assets
Information for Plans with Accumulated Benefit Obligation in Excess of Plan Assets
December 31, 2025
DukeDuke
EnergyEnergy
(in millions)OhioIndiana
Projected benefit obligation$112 $216 
Accumulated benefit obligation107 211 
Fair value of plan assets39 145 
December 31, 2024
DukeDuke
EnergyEnergy
(in millions)OhioIndiana
Projected benefit obligation$106 $203 
Accumulated benefit obligation101 197 
Fair value of plan assets32 128 
Assumptions Used for Pension Benefits Accounting
The following tables present the assumptions or range of assumptions used for pension benefit accounting.
December 31,
202520242023
Benefit Obligations
Discount rate5.50 %5.70 %5.40 %
Interest crediting rate4.84 %4.78 %4.15 %
Salary increase 3.50 %–4.00 %3.50 %–4.00 %3.50 %–4.00 %
Net Periodic Benefit Cost
Discount rate5.70 %5.00 %–5.40 %5.60 %
Interest crediting rate4.78 %4.15 %4.35 %
Salary increase3.50 %–4.00 %3.50 %–4.00 %3.50 %–4.00 %
Expected long-term rate of return on plan assets8.50 %–7.00 %8.50 %–7.00 %6.50 %–8.25 %
Expected Benefit Payments
Expected Benefit Payments
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Years ending December 31,
2026$596 $157 $176 $89 $86 $30 $44 $19 
2027578 150 173 86 87 29 43 18 
2028565 145 169 81 87 29 43 17 
2029540 135 165 77 87 28 43 16 
2030514 126 159 73 86 28 42 16 
2031-2035
2,319 540 740 324 412 124 198 71 
Other Post-Retirement Benefit Plans  
Defined Benefit Plan Disclosure [Line Items]  
Components of Net Periodic Pension Costs
Components of Net Periodic Other Post-Retirement Benefit Costs
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$2 $— $— $— $— $— $— $— 
Interest cost on accumulated post-retirement benefit obligation18 3 8 5 3 1 1 1 
Expected return on plan assets(12)(8)— — — — — (2)
Amortization of actuarial (gain) loss
(3)(1)5 4 2 (1)(1)— 
Amortization of prior service credit(21)(4)(11)(6)(5)— (5)— 
Net periodic post-retirement benefit costs (a)(b) (c)
$(16)$(10)$2 $3 $— $— $(5)$(1)
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$2 $— $— $— $— $— $— $— 
Interest cost on accumulated post-retirement benefit obligation17 3 7 4 3 1 1 1 
Expected return on plan assets(11)(8)— — — — — (2)
Amortization of actuarial (gain) loss
(6)(2)8 6 2 (2)(4)— 
Amortization of prior service credit(21)(4)(11)(6)(5)— (5)— 
Net periodic post-retirement benefit costs(a)(b)
$(19)$(11)$4 $4 $— $(1)$(8)$(1)
Year Ended December 31, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$2 $1 $— $— $— $— $— $— 
Interest cost on accumulated post-retirement benefit obligation22 5 9 5 4 1 1 1 
Expected return on plan assets(11)(7)— — — — — (2)
Amortization of actuarial (gain) loss
(6)(3)8 5 2 (2)(3)— 
Amortization of prior service credit(23)(5)(11)(6)(5)— (5)— 
Net periodic post-retirement benefit costs(a)(b)
$(16)$(9)$6 $4 $1 $(1)$(7)$(1)
(a)    Duke Energy amounts exclude $3 million, $4 million and $4 million for the years ended December 2025, 2024 and 2023, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.
(b)    Duke Energy Ohio amounts exclude $1 million, $1 million and $1 million for the years ended December 2025, 2024 and 2023, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.
(c)    Duke Energy and Duke Energy Indiana amounts exclude $5 million for the year ended December 2025 of net periodic post-retirement benefit costs associated with a regulatory adjustment.
Amounts Recognized in AOCI and Regulatory Assets and Liabilities
Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets and Liabilities
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Regulatory assets, net (decrease) increase
$(11)$(17)$7 $2 $5 $— $(3)$(1)
Regulatory liabilities, net (decrease) increase
$(30)$(17)$(1)$(1)$— $(1)$(9)$1 
Accumulated other comprehensive (income) loss
Amortization of prior year actuarial gain(1)— — — — — — — 
Net amount recognized in accumulated other comprehensive income
$(1)$— $— $— $— $— $— $— 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Regulatory assets, net (decrease) increase
$(42)$(62)$23 $17 $5 $(1)$(3)$— 
Regulatory liabilities, net (decrease) increase
$(76)$(71)$12 $12 $— $(3)$(12)$— 
Accumulated other comprehensive (income) loss
Amortization of prior year actuarial gain$1 $— $— $— $— $— $— $— 
Net amount recognized in accumulated other comprehensive income
$1 $— $— $— $— $— $— $— 
Reconciliation of Funded Status to Net Amount Recognized
Reconciliation of Funded Status to Accrued Other Post-Retirement Benefit Costs
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Change in Benefit Obligation
Post-retirement benefit obligation at prior measurement date
$334 $63 $146 $87 $60 $18 $20 $15 
Service cost2 — — — — — — — 
Interest cost18 3 8 5 3 1 1 1 
Plan participants' contributions1 — — — — — — — 
Actuarial losses (gains)
1 (1)2 2 1 — 1 1 
Benefits paid(35)(8)(14)(8)(6)(2)(3)(2)
Post-retirement benefit obligation at measurement date
$321 $57 $142 $86 $58 $17 $19 $15 
Change in Fair Value of Plan Assets
Plan assets at prior measurement date$161 $107 $(1)$— $— $7 $— $29 
Actual return on plan assets18 10 — — — 1 — 4 
Benefits paid(35)(8)(14)(8)(6)(2)(3)(2)
Employer contributions26 3 13 8 6 2 3 1 
Plan participants' contributions1 — — — — — — — 
Plan assets at measurement date$171 $112 $(2)$— $— $8 $— $32 
Funded status of plan$(150)$55 $(144)$(86)$(58)$(9)$(19)$17 
Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Change in Benefit Obligation
Post-retirement benefit obligation at prior measurement date
$347 $69 $146 $84 $60 $19 $24 $15 
Service cost2 — — — — — — — 
Interest cost17 3 7 4 3 1 1 1 
Plan participants' contributions3 1 1 — — — — — 
Actuarial losses (gains)
2 (2)7 5 3 — (2)— 
Benefits paid(37)(8)(15)(6)(6)(2)(3)(1)
Post-retirement benefit obligation at measurement date
$334 $63 $146 $87 $60 $18 $20 $15 
Change in Fair Value of Plan Assets
Plan assets at prior measurement date$156 $102 $(1)$(1)$(1)$7 $3 $27 
Actual return on plan assets7 4 — — — — — 3 
Benefits paid(37)(8)(15)(6)(6)(2)(3)(1)
Tax Refund
5 4 — — — — — — 
Employer contributions27 4 14 7 7 2 — — 
Plan participants' contributions3 1 1 — — — — — 
Plan assets at measurement date$161 $107 $(1)$— $— $7 $— $29 
Funded status of plan$(173)$44 $(147)$(87)$(60)$(11)$(20)$14 
Amounts Recognized in the Consolidated Balance Sheet
Amounts Recognized in the Consolidated Balance Sheets
December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Prefunded post-retirement benefit(a)
$— $55 $— $— $— $1 $— $17 
Current post-retirement liability(b)
8 — 5 3 2 1 — — 
Noncurrent post-retirement liability(c)
142 — 139 83 56 9 19 — 
Net liability (asset) recognized$150 $(55)$144 $86 $58 $9 $19 $(17)
Regulatory assets$70 $— $69 $48 $21 $1 $17 $— 
Regulatory liabilities$124 $18 $11 $11 $— $13 $53 $1 
Accumulated other comprehensive (income) loss
Deferred income tax expense$3 $— $— $— $— $— $— $— 
Net actuarial gain(13)— (1)— — — — — 
Net amounts recognized in accumulated other comprehensive income
$(10)$— $(1)$— $— $— $— $— 
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Prefunded post-retirement benefit(a)
$— $44 $— $— $— $1 $— $14 
Current post-retirement liability(b)
8 — 5 3 2 1 — — 
Noncurrent post-retirement liability(c)
165 — 142 84 58 11 20 — 
Net liability (asset) recognized$173 $(44)$147 $87 $60 $11 $20 $(14)
Regulatory assets$81 $17 $62 $46 $16 $1 $20 $1 
Regulatory liabilities$154 $35 $12 $12 $— $14 $62 $— 
Accumulated other comprehensive (income) loss
Deferred income tax expense$3 $— $— $— $— $— $— $— 
Net actuarial gain(12)— (1)— — — — — 
Net amounts recognized in accumulated other comprehensive income
$(9)$— $(1)$— $— $— $— $— 
(a)    Included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets. 
(b)    Included in Other within Current Liabilities on the Consolidated Balance Sheets.
(c)    Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets.
Assumptions Used for Pension Benefits Accounting
The following tables present the assumptions used for other post-retirement benefits accounting.
December 31,
202520242023
Benefit Obligations
Discount rate5.50 %5.70 %5.40 %
Net Periodic Benefit Cost
Discount rate5.70 %5.40 %5.60 %
Expected long-term rate of return on plan assets2.50 %–8.50 %2.75 %–8.50 %4.00 %–8.25 %
Expected Benefit Payments
Expected Benefit Payments
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Years ending December 31,
2026$54 $13 $18 $11 $7 $3 $4 $2 
202744 10 16 10 7 3 3 2 
202838 8 15 9 6 2 2 2 
202934 7 14 8 6 2 2 2 
203031 6 14 8 5 2 2 2 
2031-2035
121 20 58 35 23 6 7 6 
Assumed Health Care Cost Trend Rate
Assumed Health Care Cost Trend Rate
December 31,
20252024
Health care cost trend rate assumed for next year – pre-65 trend
8.00 %7.00 %
Health care cost trend rate assumed for next year – post-65 trend
8.00 %— %
Rate to which the cost trend is assumed to decline (the ultimate trend rate)5.00 %4.75 %
Year that rate reaches ultimate trend
2038
2034-2035
v3.25.4
Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2025
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit)
Components of Income Tax Expense
Tax benefit from discontinued operations, in the following tables, includes income tax benefits related to the Commercial Renewables Disposal Groups. See Note 2 for further details.
 Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current income taxes
Federal(a)
$(565)$(278)$134 $(118)$264 $66 $125 $65 
State (6)30 21 (3)74 2 13 7 
Foreign 2 — — — — — — — 
Total current income taxes (569)(248)155 (121)338 68 138 72 
Deferred income taxes       
Federal 1,101 432 259 319 (57)(3)(64)37 
State 135 27 76 29 9 3 11 3 
Total deferred income taxes(b)
1,236 459 335 348 (48)— (53)40 
ITC amortization (25)(17)(5)(4)(1)— (3)— 
Income tax expense from continuing operations 642 194 485 223 289 68 82 112 
(a)    Transferrable Federal credits under IRC Section 6418 are recorded net of discount in current Federal income tax expense.
(b)     Total deferred income taxes include income tax attribute (generation)/utilization, under the tax sharing agreement, as follows:
Duke Energy: $354 million
Duke Energy Carolinas: $(36) million
Progress Energy: $(11) million
Duke Energy Progress: $(29) million
Duke Energy Florida: $4 million
Duke Energy Ohio: $(14) million
Duke Energy Indiana: $(45) million
Piedmont: $(2) million
 Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current income taxes        
Federal
$(365)$178 $359 $373 $14 $52 $70 $40 
State 31 75 34 40 (12)3 12 (6)
Foreign 2 — — — — — — — 
Total current income taxes (332)253 393 413 2 55 82 34 
Deferred income taxes
Federal 858 10 (22)(215)181 8 (19)40 
State 81 (25)59 (6)86 1 8 21 
Total deferred income taxes(a)
939 (15)37 (221)267 9 (11)61 
ITC amortization (17)(12)(4)(3)(1)— — — 
Income tax expense from continuing operations 590 226 426 189 268 64 71 95 
Tax benefit from discontinued operations (50)— — — — — — — 
Total income tax expense included in Consolidated Statements of Operations
$540 $226 $426 $189 $268 $64 $71 $95 
(a)    Total deferred income taxes include the utilization of NOL carryforwards and tax credit carryforwards of $523 million at Duke Energy and $8 million at Duke Energy Indiana. In addition, total deferred income taxes include the generation of NOL carryforwards and tax credit carryforwards of $47 million at Duke Energy Carolinas, $85 million at Progress Energy, $66 million at Duke Energy Progress, $30 million at Duke Energy Florida, $26 million at Duke Energy Ohio, and $8 million at Piedmont.
 Year Ended December 31, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current income taxes        
Federal(b)
$71 $173 $459 $198 $279 $(46)$10 $44 
State 1 22 38 4 71 (3)9 3 
Foreign 3 — — — — — — — 
Total current income taxes 75 195 497 202 350 (49)19 47 
Deferred income taxes
Federal 319 (43)(154)(69)(89)111 77 25 
State 53 (7)38 19 — 1 14 12 
Total deferred income taxes(a)
372 (50)(116)(50)(89)112 91 37 
ITC amortization (9)(4)(4)(3)— — — — 
Income tax expense from continuing operations
438 141 377 149 261 63 110 84 
Tax benefit from discontinued operations (359)— — — — — — — 
Total income tax expense included in Consolidated Statements of Operations
$79 $141 $377 $149 $261 $63 $110 $84 
(a)    Total deferred income taxes includes the generation of NOL carryforwards and tax credit carryforwards of $214 million at Duke Energy and $54 million at Duke Energy Indiana. In addition, total deferred income taxes includes the generation of NOL carryforwards and tax credit carryforwards of $2 million at Duke Energy Carolinas, $116 million at Progress Energy, $59 million at Duke Energy Progress, $5 million at Duke Energy Florida, $22 million at Duke Energy Ohio, and $15 million at Piedmont.
(b)    Total current federal income tax at Duke Energy includes corporate alternative minimum tax, net of tax credit utilization, of $69 million. In addition, under the IRA transferability provision, Progress Energy elected to sell $28 million of PTCs generated by Duke Energy Florida.
Schedule of Income before Income Tax, Domestic and Foreign
Duke Energy Income from Continuing Operations before Income Taxes
 Years Ended December 31,
(in millions)202520242023
Domestic$5,674 $5,145 $4,700 
Foreign38 49 67 
Income from continuing operations before income taxes$5,712 $5,194 $4,767 
Summary of Effective Tax Rates
The following tables present a reconciliation of income tax expense at the U.S. federal statutory tax rate to the actual tax expense from continuing operations.
 Year Ended December 31, 2025
DukeDuke EnergyProgressDuke Energy
($ in millions and effective tax rate in percent)EnergyCarolinasEnergyProgress
U.S. Federal statutory income tax$1,200 21.0 %$483 21.0 %$609 21.0 %$316 21.0 %
Federal
Tax credits
PTCs (solar)
(65)(1.1)%— — %(65)(2.2)%(1)— %
Amortization of PTCs (nuclear)
(36)(0.6)%(36)(1.6)%— — %— — %
Amortization of ITCs
(25)(0.4)%(17)(0.7)%(5)(0.2)%(4)(0.3)%
Other(23)(0.4)%(11)(0.5)%(9)(0.3)%(6)(0.4)%
Nontaxable and Nondeductible
    Regulatory Deferrals
AFUDC equity income(68)(1.2)%(30)(1.3)%(25)(0.9)%(21)(1.4)%
AFUDC equity depreciation46 0.8 %19 0.8 %19 0.7 %11 0.7 %
Amortization of EDIT(466)(8.2)%(260)(11.3)%(118)(4.1)%(96)(6.4)%
    Other(27)(0.5)%(1)— %1 — %2 0.1 %
Changes in valuation allowances7 0.1 %— — %— — %— — %
Foreign tax effects(6)(0.1)%— — %— — %— — %
Unrecognized tax benefits(1)— %— — %(1)— %(1)— %
Domestic state and local income taxes, net of federal effect(a)
106 1.8 %47 2.0 %79 2.7 %23 1.5 %
Total$642 11.2 %$194 8.4 %$485 16.7 %$223 14.8 %
 Year Ended December 31, 2025
Duke Energy
Duke Energy
Duke Energy
($ in millions and effective tax rate in percent)
Florida
Ohio
Indiana
Piedmont
U.S. Federal statutory income tax$311 21.0 %$85 21.0 %$127 21.0 %$116 21.0 %
Federal
Tax credits
PTCs (solar)
(64)(4.3)%— — %— — %— — %
Amortization of PTCs (nuclear)
— — %— — %— — %— — %
Amortization of ITCs
(1)(0.1)%— — %(3)(0.5)%— — %
Other(3)(0.2)%(1)(0.2)%(1)(0.2)%(1)(0.2)%
Nontaxable and Nondeductible
    Regulatory Deferrals
AFUDC equity income(4)(0.3)%(3)(0.7)%(6)(1.0)%(4)(0.7)%
AFUDC equity depreciation8 0.5 %4 1.0 %4 0.7 %1 0.2 %
Amortization of EDIT(22)(1.5)%(22)(5.4)%(57)(9.5)%(8)(1.4)%
    Other(3)(0.2)%0— %0(0.1)%0(0.2)%
Changes in valuation allowances— — %— — %— — %— — %
Foreign tax effects— — %— — %— — %— — %
Unrecognized tax benefits1 0.1 %— — %— — %— — %
Domestic state and local income taxes, net of federal effect(a)
66 4.5 %4 1.0 %19 3.2 %9 1.6 %
Total$289 19.5 %$68 16.7 %$82 13.6 %$112 20.3 %
(a)    Jurisdictions that make up the majority of the registrant's respective domestic state income taxes, net of federal effect, are as follows:
•Duke Energy: North Carolina, South Carolina and Florida
•Duke Energy Carolinas: North Carolina and South Carolina
•Progress Energy: Florida and North Carolina
•Duke Energy Progress: North Carolina and South Carolina
•Duke Energy Florida: Florida
•Duke Energy Ohio: Kentucky
•Duke Energy Indiana: Indiana
•Piedmont: North Carolina, Tennessee and South Carolina
 Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Income tax expense, computed at the statutory rate of 21%$1,090$443$545$284$279$85$108$107
State income tax, net of federal income tax effect8840 73275831612
Amortization of EDIT
(436)(225)(121)(98)(23)(23)(49)(18)
AFUDC equity income(48)(24)(16)(13)(3)(1)(3)(4)
AFUDC equity depreciation3819147724—
Production tax credits
(46)—(46)—(46)———
Other tax credits
(43)(23)(16)(12)(4)(1)(2)(2)
Other items, net(53)(4)(7)(6)—(1)(3)—
Income tax expense from continuing operations
$590 $226 $426 $189 $268 $64 $71 $95 
Effective tax rate11.4 %10.7 %16.4 %14.0 %20.2 %15.8 %13.9 %18.7 %
 Year Ended December 31, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Income tax expense, computed at the statutory rate of 21%$1,001$338$490$241$268$83$128$97
State income tax, net of federal income tax effect4312 601856(2)1812
Amortization of EDIT
(388)(197)(114)(91)(23)(22)(33)(20)
AFUDC equity income(41)(19)(14)(11)(3)(2)(2)(4)
AFUDC equity depreciation3718136724—
Tax credits(b)
(63)(11)(46)(7)(39)(2)(2)(1)
Interest on company-owned life insurance(a)
(114)———————
Other items, net(37)—(12)(7)(5)6(3)—
Income tax expense from continuing operations
$438 $141 $377 $149 $261 $63 $110 $84 
Effective tax rate9.2 %8.8 %16.2 %13.0 %20.4 %15.9 %18.1 %18.1 %
(a)     During 2023, the Company evaluated the deductibility of certain items spanning periods currently open under federal statute, including items related to interest on company-owned life insurance. As a result of this analysis, the Company recorded a favorable federal adjustment of approximately $114 million and a favorable state adjustment of approximately $6 million. The favorable state adjustment is included in State income tax, net of federal income tax effect, in the above table.
(b)    Tax credits at Progress Energy and Duke Energy Florida include $28 million of certain eligible PTCs, net of discount, that were elected to be sold in 2023 under the transferability provisions of the IRA.
Schedule of Deferred Tax Assets and Liabilities
 December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Deferred credits and other liabilities $254 $217 $82 $49 $33 $23 $15 $21 
Lease obligations 452 86 263 184 79 1 11 1 
Pension, post-retirement and other employee benefits 20 — — — — 3 — — 
Progress Energy merger purchase accounting adjustments(a)
210 — — — — — — — 
Tax credits and NOL carryforwards 3,259 595 844 383 452 84 191 58 
Investments and other assets
— — — — — 2 19 — 
Other 36 2 4 3 1 4 (1)7 
Valuation allowance (130)(1)— — — — — — 
Total deferred income tax assets 4,101 899 1,193 619 565 117 235 87 
Investments and other assets (2,452)(1,545)(829)(790)(54)— — (68)
Pension post-retirement and other employee benefits
— (43)(57)(13)(48)— (3)(6)
Accelerated depreciation rates (12,629)(3,219)(5,171)(1,914)(3,301)(1,414)(1,701)(1,072)
Regulatory assets and deferred debits, net (1,397)(283)(712)(544)(167)(44)(56)(12)
Total deferred income tax liabilities (16,478)(5,090)(6,769)(3,261)(3,570)(1,458)(1,760)(1,158)
Net deferred income tax liabilities$(12,377)$(4,191)$(5,576)$(2,642)$(3,005)$(1,341)$(1,525)$(1,071)
(a)    Primarily related to lease obligations and debt fair value adjustments.
 December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Deferred credits and other liabilities $284 $217 $84 $43 $41 $17 $15 $40 
Lease obligations 430 88 265 179 86 2 12 2 
Pension, post-retirement and other employee benefits 89 (33)(23)(1)(26)6 1 (2)
Progress Energy merger purchase accounting adjustments(a)
227 — — — — — — — 
Tax credits and NOL carryforwards 3,845 522 783 312 449 70 145 57 
Regulatory liabilities and deferred credits— — — — — — 10 — 
Other 35 11 5 3 2 4 — 8 
Valuation allowance (517)— — — — — — — 
Total deferred income tax assets 4,393 805 1,114 536 552 99 183 105 
Investments and other assets (2,114)(1,350)(724)(671)(69)— — (48)
Accelerated depreciation rates (11,942)(3,203)(4,608)(1,624)(3,047)(1,361)(1,677)(1,019)
Regulatory assets and deferred debits, net (1,761)(304)(1,045)(585)(460)(52)— (56)
Total deferred income tax liabilities (15,817)(4,857)(6,377)(2,880)(3,576)(1,413)(1,677)(1,123)
Net deferred income tax liabilities $(11,424)$(4,052)$(5,263)$(2,344)$(3,024)$(1,314)$(1,494)$(1,018)
(a)    Primarily related to lease obligations and debt fair value adjustments.
Summary of Tax Credit Carryforwards
The following table presents the expiration of tax credits and NOL carryforwards.
 December 31, 2025
(in millions)AmountExpiration Year
General Business Credits$1,908 2032—2045
Foreign Tax Credits(c)
36 2027—2028
State Carryforwards and Credits(a)
265 2026—Indefinite
Corporate AMT Credits1,038 Indefinite
Foreign NOL carryforwards(b)
12 2027—2045
Total tax credits and NOL carryforwards$3,259    
(a)    A valuation allowance of $83 million has been recorded on the state NOL and attribute carryforwards, as presented in the Net Deferred Income Tax Liability Components table.
(b)    A valuation allowance of $12 million has been recorded on the foreign NOL carryforwards, as presented in the Net Deferred Income Tax Liability Components table.
(c)    A valuation allowance of $36 million has been recorded on the foreign tax credits, as presented in the Net Deferred Income Tax Liability Components table.
Schedule of Income Taxes Paid
The following table presents income taxes paid.
Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Federal
   Internal Revenue Service – payments/(refunds)
58 561 424 211 202 100 182 55 
   Transferrable Credits – purchased/(sold)
(676)(551)(171)(102)(69)— — — 
   Total Federal
(618)10 253 109 133 100 182 55 
State income tax payments/(refunds)
   North Carolina(4)39 7 9 — — — — 
   South Carolina— 36 — 2 — — — — 
   Florida— — 5 — 34 — — — 
   Indiana— — — — — — 26 — 
Kentucky1 — — — — 3 — — 
Oklahoma(4)— — — — — — — 
   Other
— — — — — — — — 
   Total State
(7)75 12 11 34 3 26 — 
Total Income Taxes Paid (net of refunds)
$(625)$85 $265 $120 $167 $103 $208 $55 
Schedule of Unrecognized Tax Benefits Roll Forward
The following tables present changes to unrecognized tax benefits.
 Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Unrecognized tax benefits – January 1$74 $25 $29 $22 $7 $2 $3 $13 
Gross increases – current period tax positions(2)— (1)(2)1 — — (1)
Unrecognized tax benefits – December 31$72 $25 $28 $20 $8 $2 $3 $12 
 Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Unrecognized tax benefits – January 1$62 $21 $24 $18 $6 $2 $3 $11 
Gross increases – current period tax positions12 4 5 4 1 — — 2 
Unrecognized tax benefits – December 31$74 $25 $29 $22 $7 $2 $3 $13 
 Year Ended December 31, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Unrecognized tax benefits – January 1$65 $17 $19 $13 $5 $1 $2 $9 
Gross decreases – tax positions in prior periods
(15)— — — — — — — 
Gross increases – current period tax positions12 4 5 5 1 1 1 2 
Total changes(3)4 5 5 1 1 1 2 
Unrecognized tax benefits – December 31$62 $21 $24 $18 $6 $2 $3 $11 
Summary of Income Tax Contingencies
The following table includes additional information regarding the Duke Energy Registrants' unrecognized tax benefits at December 31, 2025.
 December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Amount that if recognized, would affect the
effective tax rate or regulatory liability(a)
$67 $24 $26 $18 $8 $2 $3 $11 
(a)    The Duke Energy Registrants are unable to estimate the specific amounts that would affect the ETR versus the regulatory liability.
v3.25.4
Other Income and Expenses, Net (Tables)
 12 Months Ended
Dec. 31, 2025
Other Income and Expenses [Abstract]  
Schedule of Other Income and Expenses, Net
The components of Other income and expenses, net on the Consolidated Statements of Operations are as follows.
 Year Ended December 31, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Piedmont
Interest income$51 $17 $47 $39 $9 $3 $6 $19 
AFUDC equity 328 144 117 100 17 16 34 17 
Post-in-service equity returns
47 26 19 19 — — 2 — 
Nonoperating income, other 243 71 104 38 64 5 19 5 
Other income and expense, net $669 $258 $287 $196 $90 $24 $61 $41 
 Year Ended December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Piedmont
Interest income $63 $9 $18 $14 $4 $8 $5 $19 
AFUDC equity 233 113 74 61 13 7 19 21 
Post-in-service equity returns
52 31 20 20 — 1 1 — 
Nonoperating income, other313 94 123 48 69 3 37 14 
Other income and expense, net $661 $247 $235 $143 $86 $19 $62 $54 
 Year Ended December 31, 2023
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Piedmont
Interest income $29 $10 $14 $9 $7 $25 $25 $19 
AFUDC equity 198 91 67 52 15 9 10 21 
Post-in-service equity returns
39 19 19 19 — 1 — — 
Nonoperating income, other332 118 101 44 56 6 41 17 
Other income and expense, net$598 $238 $201 $124 $78 $41 $76 $57 
v3.25.4
Summary of Significant Accounting Policies (Other Assets and Liabilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Duke Energy Carolinas | Current Liabilities    
Organization And Basis Of Presentation [Line Items]    
Accrued compensation $ 302 $ 234
Progress Energy | Current Liabilities    
Organization And Basis Of Presentation [Line Items]    
Customer deposits/Collateral liabilities 293 281
Duke Energy Progress | Current Liabilities    
Organization And Basis Of Presentation [Line Items]    
Accrued compensation 143 114
Duke Energy Florida | Current Liabilities    
Organization And Basis Of Presentation [Line Items]    
Customer deposits/Collateral liabilities 191 164
Duke Energy Florida | Current Assets    
Organization And Basis Of Presentation [Line Items]    
Tax receivables 12 166
Duke Energy Indiana | Current Liabilities    
Organization And Basis Of Presentation [Line Items]    
Customer advances $ 117 $ 100
v3.25.4
Summary of Significant Accounting Policies (Schedule of Cash and Cash Equivalents) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 245 $ 314
Other 84 84
Other Noncurrent Assets    
Other 34 20
Total cash, cash equivalents and restricted cash 363 418
Duke Energy Carolinas    
Current Assets    
Cash and cash equivalents 3 6
Other 12 9
Other Noncurrent Assets    
Other 7 1
Total cash, cash equivalents and restricted cash 22 16
Progress Energy    
Current Assets    
Cash and cash equivalents 54 73
Other 71 76
Other Noncurrent Assets    
Other 14 11
Total cash, cash equivalents and restricted cash 139 160
Duke Energy Progress    
Current Assets    
Cash and cash equivalents 16 24
Other 38 40
Other Noncurrent Assets    
Other 7 5
Total cash, cash equivalents and restricted cash 61 69
Duke Energy Florida    
Current Assets    
Cash and cash equivalents 21 33
Other 34 35
Other Noncurrent Assets    
Other 7 7
Total cash, cash equivalents and restricted cash $ 62 $ 75
v3.25.4
Summary of Significant Accounting Policies (Inventory) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Public Utilities, Inventory [Line Items]    
Materials and supplies $ 3,542 $ 3,386
Coal 715 801
Natural gas, oil and other 312 309
Total inventory 4,569 4,496
Duke Energy Carolinas    
Public Utilities, Inventory [Line Items]    
Materials and supplies 1,157 1,150
Coal 328 341
Natural gas, oil and other 45 45
Total inventory 1,530 1,536
Progress Energy    
Public Utilities, Inventory [Line Items]    
Materials and supplies 1,789 1,649
Coal 235 241
Natural gas, oil and other 186 196
Total inventory 2,210 2,086
Duke Energy Progress    
Public Utilities, Inventory [Line Items]    
Materials and supplies 1,109 1,074
Coal 155 164
Natural gas, oil and other 99 103
Total inventory 1,363 1,341
Duke Energy Florida    
Public Utilities, Inventory [Line Items]    
Materials and supplies 680 576
Coal 80 77
Natural gas, oil and other 87 92
Total inventory 847 745
Duke Energy Ohio    
Public Utilities, Inventory [Line Items]    
Materials and supplies 155 149
Coal 21 23
Natural gas, oil and other 11 11
Total inventory 187 183
Duke Energy Indiana    
Public Utilities, Inventory [Line Items]    
Materials and supplies 398 389
Coal 131 196
Natural gas, oil and other 2 1
Total inventory 531 586
Piedmont    
Public Utilities, Inventory [Line Items]    
Materials and supplies 10 11
Coal 0  
Natural gas, oil and other 67 55
Total inventory $ 77 $ 66
v3.25.4
Summary of Significant Accounting Policies (Property, Plant and Equipment) (Details)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Public Utility, Property, Plant and Equipment [Line Items]      
Weighted-average depreciation rate (as a percent) 3.10% 3.00% 2.90%
Duke Energy Carolinas      
Public Utility, Property, Plant and Equipment [Line Items]      
Weighted-average depreciation rate (as a percent) 3.10% 3.10% 2.70%
Progress Energy      
Public Utility, Property, Plant and Equipment [Line Items]      
Weighted-average depreciation rate (as a percent) 3.20% 3.30% 3.30%
Duke Energy Progress      
Public Utility, Property, Plant and Equipment [Line Items]      
Weighted-average depreciation rate (as a percent) 3.20% 3.20% 3.10%
Duke Energy Florida      
Public Utility, Property, Plant and Equipment [Line Items]      
Weighted-average depreciation rate (as a percent) 3.20% 3.50% 3.50%
Duke Energy Ohio      
Public Utility, Property, Plant and Equipment [Line Items]      
Weighted-average depreciation rate (as a percent) 2.90% 2.90% 2.80%
Duke Energy Indiana      
Public Utility, Property, Plant and Equipment [Line Items]      
Weighted-average depreciation rate (as a percent) 4.30% 3.60% 3.60%
Piedmont      
Public Utility, Property, Plant and Equipment [Line Items]      
Weighted-average depreciation rate (as a percent) 2.20% 2.20% 2.10%
v3.25.4
Summary of Significant Accounting Policies (Other Noncurrent Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Offsetting Assets [Line Items]    
Other (including amounts related to VIEs) $ 4,167 $ 3,507
Renewable Energy Program    
Offsetting Assets [Line Items]    
Other (including amounts related to VIEs) $ 150 $ 150
v3.25.4
Summary of Significant Accounting Policies (Accounts Payable and Supplier Invoices Sold) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Payables [Line Items]    
Confirmed obligations outstanding at beginning of period $ 13 $ 50
Invoices confirmed during the period 71 156
Confirmed invoices paid during the period (61) (193)
Confirmed obligations outstanding at end of period 23 13
Piedmont    
Payables [Line Items]    
Confirmed obligations outstanding at beginning of period 12 47
Invoices confirmed during the period 69 152
Confirmed invoices paid during the period (58) (187)
Confirmed obligations outstanding at end of period $ 23 $ 12
v3.25.4
Summary of Significant Accounting Policies (Excise Taxes) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Organization And Basis Of Presentation [Line Items]      
Excise taxes $ 447 $ 423 $ 458
Duke Energy Carolinas      
Organization And Basis Of Presentation [Line Items]      
Excise taxes 27 31 27
Progress Energy      
Organization And Basis Of Presentation [Line Items]      
Excise taxes 307 285 322
Duke Energy Progress      
Organization And Basis Of Presentation [Line Items]      
Excise taxes 8 9 5
Duke Energy Florida      
Organization And Basis Of Presentation [Line Items]      
Excise taxes 299 276 317
Duke Energy Ohio      
Organization And Basis Of Presentation [Line Items]      
Excise taxes 110 105 106
Duke Energy Indiana      
Organization And Basis Of Presentation [Line Items]      
Excise taxes 0 0 1
Piedmont      
Organization And Basis Of Presentation [Line Items]      
Excise taxes $ 3 $ 2 $ 2
v3.25.4
Dispositions (Narrative) (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended 35 Months Ended
Mar. 31, 2026
Aug. 04, 2025
Jun. 30, 2028
Dec. 31, 2027
Jun. 30, 2027
Dec. 31, 2026
Jun. 30, 2026
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Jun. 30, 2028
Oct. 25, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Contribution from NCI                 $ 47.0 $ 278.0 [1]    
Florida Progress LLC                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Termination fee   $ 240.0                    
Florida Progress LLC | Forecast                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Contribution from NCI     $ 1,000.0 $ 1,500.0 $ 500.0 $ 200.0 $ 2,800.0       $ 6,000.0  
Investment (percent)     19.70%       9.20%       19.70%  
Noncontrolling Interests                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Contribution from NCI                 47.0 278.0 [1]    
Discontinued Operations, Held-for-sale | Commercial Renewables Disposal Groups                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Noncontrolling interest balance                 18.0      
Loss on disposal               $ (4.0) (14.0) $ (1,725.0)    
Discontinued Operations, Disposed of by Sale | Brookfield Renewable Partners                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Consideration to be received                       $ 1,100.0
Discontinued Operations, Disposed of by Sale | Commercial Renewables Disposal Groups                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Closing period                       18 months
Discontinued Operations, Disposed of by Sale | Commercial Renewables Disposal Groups | Accounts Receivable                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Consideration to be received                 $ 551.0      
Discontinued Operations, Disposed of by Sale | Piedmont Tennessee Disposal Group | Forecast                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Consideration to be received $ 2,480.0                      
Termination fee as a percentage of the purchase price (percent) 6.50%                      
[1] Relates to tax equity financing activity in the Commercial Renewables Disposal Groups.
v3.25.4
Dispositions (Balance Sheet) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Sep. 30, 2025
Dec. 31, 2024
Current Assets Held for Sale      
Total current assets held for sale $ 109   $ 96
Noncurrent Assets Held for Sale      
Total noncurrent assets held for sale 2,148   2,095
Current Liabilities Associated with Assets Held for Sale      
Total current liabilities associated with assets held for sale 84   132
Noncurrent Liabilities Associated with Assets Held for Sale      
Total noncurrent liabilities associated with assets held for sale 170   271
Piedmont      
Current Assets Held for Sale      
Total current assets held for sale 109   92
Noncurrent Assets Held for Sale      
Total noncurrent assets held for sale 1,864   1,722
Current Liabilities Associated with Assets Held for Sale      
Total current liabilities associated with assets held for sale 66   52
Noncurrent Liabilities Associated with Assets Held for Sale      
Total noncurrent liabilities associated with assets held for sale 170   182
Discontinued Operations, Held-for-sale      
Current Assets Held for Sale      
Receivables, net 82   64
Inventory 12   12
Other 15   20
Total current assets held for sale 109   96
Noncurrent Assets Held for Sale      
Cost 2,219   2,178
Accumulated depreciation and amortization (406)   (416)
Net property, plant and equipment 1,813   1,762
Goodwill 294   294
Regulatory assets 41   35
Operating lease right-of-use assets, net     4
Total noncurrent assets held for sale 2,148   2,095
Total Assets Held for Sale 2,257   2,191
Current Liabilities Associated with Assets Held for Sale      
Accounts payable 76   61
Taxes accrued     2
Current maturities of long-term debt     43
Unrealized losses on commodity hedges     13
Other 8   13
Total current liabilities associated with assets held for sale 84   132
Noncurrent Liabilities Associated with Assets Held for Sale      
Operating lease liabilities     5
Asset retirement obligations 4   9
Regulatory liabilities 161   173
Disposal Group, Including Discontinued Operation, Unrealized Losses On Commodity Hedges, Noncurrent     66
Other 5   18
Total noncurrent liabilities associated with assets held for sale 170   271
Total Liabilities Associated with Assets Held for Sale 254   403
Discontinued Operations, Held-for-sale | Commercial Renewables Disposal Groups      
Current Assets Held for Sale      
Receivables, net 0   0
Inventory 0   0
Other 0   4
Total current assets held for sale 0   4
Noncurrent Assets Held for Sale      
Cost 0   109
Accumulated depreciation and amortization 0   (24)
Net property, plant and equipment 0   85
Goodwill 0   0
Regulatory assets 0   0
Operating lease right-of-use assets, net     4
Total noncurrent assets held for sale 0   89
Total Assets Held for Sale 0   93
Current Liabilities Associated with Assets Held for Sale      
Accounts payable 18   19
Taxes accrued     1
Current maturities of long-term debt     43
Unrealized losses on commodity hedges     13
Other 0   4
Total current liabilities associated with assets held for sale 18   80
Noncurrent Liabilities Associated with Assets Held for Sale      
Operating lease liabilities     5
Asset retirement obligations 0   5
Regulatory liabilities 0   0
Disposal Group, Including Discontinued Operation, Unrealized Losses On Commodity Hedges, Noncurrent     66
Other 0   13
Total noncurrent liabilities associated with assets held for sale 0   89
Total Liabilities Associated with Assets Held for Sale 18   169
Discontinued Operations, Held-for-sale | Piedmont Tennessee Disposal Group      
Current Assets Held for Sale      
Receivables, net 82   64
Inventory 12   12
Other 15   16
Total current assets held for sale 109   92
Noncurrent Assets Held for Sale      
Cost 2,219   2,069
Accumulated depreciation and amortization (406)   (392)
Net property, plant and equipment 1,813   1,677
Goodwill 294 $ 294 294
Regulatory assets 41   35
Operating lease right-of-use assets, net     0
Total noncurrent assets held for sale 2,148   2,006
Total Assets Held for Sale 2,257   2,098
Current Liabilities Associated with Assets Held for Sale      
Accounts payable 58   42
Taxes accrued     1
Current maturities of long-term debt     0
Unrealized losses on commodity hedges     0
Other 8   9
Total current liabilities associated with assets held for sale 66   52
Noncurrent Liabilities Associated with Assets Held for Sale      
Operating lease liabilities     0
Asset retirement obligations 4   4
Regulatory liabilities 161   173
Disposal Group, Including Discontinued Operation, Unrealized Losses On Commodity Hedges, Noncurrent     0
Other 5   5
Total noncurrent liabilities associated with assets held for sale 170   182
Total Liabilities Associated with Assets Held for Sale 236   234
Discontinued Operations, Held-for-sale | Piedmont | Piedmont Tennessee Disposal Group      
Current Assets Held for Sale      
Receivables, net 82   64
Inventory 12   12
Other 15   16
Total current assets held for sale 109   92
Noncurrent Assets Held for Sale      
Cost 2,219   2,069
Accumulated depreciation and amortization (406)   (392)
Net property, plant and equipment 1,813   1,677
Goodwill 10   10
Regulatory assets 41   35
Operating lease right-of-use assets, net     0
Total noncurrent assets held for sale 1,864   1,722
Total Assets Held for Sale 1,973   1,814
Current Liabilities Associated with Assets Held for Sale      
Accounts payable 58   42
Taxes accrued     1
Current maturities of long-term debt     0
Unrealized losses on commodity hedges     0
Other 8   9
Total current liabilities associated with assets held for sale 66   52
Noncurrent Liabilities Associated with Assets Held for Sale      
Operating lease liabilities     0
Asset retirement obligations 4   4
Regulatory liabilities 161   173
Disposal Group, Including Discontinued Operation, Unrealized Losses On Commodity Hedges, Noncurrent     0
Other 5   5
Total noncurrent liabilities associated with assets held for sale 170   182
Total Liabilities Associated with Assets Held for Sale $ 236   $ 234
v3.25.4
Dispositions (Duke Energy Discontinued Operations) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Income (Loss) From Discontinued Operations, net of tax $ 1 $ 10 $ (1,455)
Discontinued Operations, Held-for-sale | Commercial Renewables Disposal Groups      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Income (Loss) From Discontinued Operations, net of tax (1) 12 (1,457)
Discontinued Operations, Held-for-sale | Other      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Income (Loss) From Discontinued Operations, net of tax $ 2 $ (2) $ 2
v3.25.4
Dispositions (Income Statement) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Income tax benefit   $ (50) $ (359)
(Loss) Income from discontinued operations $ 1 10 (1,455)
Add: Net (income) loss attributable to noncontrolling interest included in discontinued operations 0 (3) 64
Net (loss) income from discontinued operations attributable to Duke Energy Corporation 1 7 (1,391)
Discontinued Operations, Held-for-sale | Commercial Renewables Disposal Groups      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Operating revenues 4 4 330
Operation, maintenance and other 1 22 302
Property and other taxes 0 2 45
Other income and expenses, net 0 0 (8)
Interest expense 0 4 65
Loss on disposal 4 14 1,725
Loss before income taxes (1) (38) (1,815)
Income tax benefit 0 (50) (358)
(Loss) Income from discontinued operations (1) 12 (1,457)
Add: Net (income) loss attributable to noncontrolling interest included in discontinued operations 0 (3) 64
Net (loss) income from discontinued operations attributable to Duke Energy Corporation $ (1) $ 9 $ (1,393)
v3.25.4
Dispositions (Cash Flow Statement) (Details) - Commercial Renewables Disposal Groups - Discontinued Operations, Held-for-sale - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Operating activities $ (3) $ 7 $ 607
Investing activities $ 0 $ (13) $ 122
v3.25.4
Business Segments (Business Segment Data) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues $ 32,237 $ 30,357 $ 29,060
Less:      
Operation, maintenance and other 6,698 5,389 5,625
Depreciation and amortization 6,324 5,793 5,253
Property and other taxes 1,597 1,466 1,400
Impairment of assets and other charges (4) 38 85
Interest expense 3,634 3,384 3,014
Income Tax Expense 642 590 438
Noncontrolling interests 103 87 97
Preferred dividends 56 106 106
Preferred redemption costs 0 16 0
Add: Equity in (losses) earnings of unconsolidated affiliates 51 (9) 113
Add: Other 714 687 650
Segment income (loss) 4,911 4,395 4,126
Discontinued Operations 1 7 (1,391)
Net Income available to Duke Energy common stockholders 4,912 4,402 2,735
Add back: Net income attributable to noncontrolling interest 103 90 33
Net income 5,071 4,614 2,874
Capital expenditures 14,002 12,263 12,622
Segment assets 195,736 186,343 176,893
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 5,712 5,194 4,767
Nonregulated electric and other 307 318 291
Regulated electric (29,060) (27,787) (26,617)
Depreciation, amortization and accretion (including amortization of nuclear fuel) 7,704 6,419 6,084
Losses on sales of other assets 45 26 52
Fuel used in electric generation and purchased power      
Less:      
Cost of sales 8,058 9,206 9,086
Cost of natural gas      
Less:      
Cost of sales 983 565 593
Duke Energy Indiana      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 3,544 3,040 3,399
Less:      
Cost of sales 1,065 964 1,217
Operation, maintenance and other 811 671 713
Depreciation and amortization 823 676 666
Property and other taxes 61 50 59
Impairment of assets and other charges     0
Interest expense 243 229 213
Income Tax Expense 82 71 110
Add: Other 61 62 76
Segment income (loss) 520 441 497
Net income 520 441 497
Capital expenditures 1,332 935 961
Segment assets 16,346 15,727 14,811
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 602 512 607
Depreciation, amortization and accretion (including amortization of nuclear fuel) 827 679 669
Duke Energy Indiana | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 1,065 964 1,217
Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,797 2,545 2,507
Less:      
Operation, maintenance and other 490 485 478
Depreciation and amortization 466 403 367
Property and other taxes 432 400 364
Impairment of assets and other charges 0 0 3
Interest expense 203 192 169
Income Tax Expense 68 64 63
Add: Other 25 20 42
Segment income (loss) 338 341 334
Net income 338 341 334
Capital expenditures 929 815 939
Segment assets 13,446 12,768 12,216
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 406 405 397
Regulated electric (2,045) (1,905) (1,868)
Depreciation, amortization and accretion (including amortization of nuclear fuel) 470 408 371
Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 626 538 608
Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 199 142 163
Duke Energy Carolinas      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 9,713 9,718 8,288
Less:      
Cost of sales 2,649 3,251 2,524
Operation, maintenance and other 2,002 1,740 1,774
Depreciation and amortization 1,903 1,768 1,593
Property and other taxes 349 346 320
Impairment of assets and other charges (11) 31 44
Interest expense 783 722 686
Income Tax Expense 194 226 141
Add: Other 264 249 264
Segment income (loss) 2,108 1,883 1,470
Net income 2,108 1,883 1,470
Capital expenditures 4,477 3,966 3,733
Segment assets 59,175 55,005 52,110
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 2,302 2,109 1,611
Depreciation, amortization and accretion (including amortization of nuclear fuel) 2,169 2,033 1,845
Losses on sales of other assets 6 2 26
Duke Energy Carolinas | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,649 3,251 2,524
Progress Energy      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 14,509 13,633 13,544
Less:      
Cost of sales 4,267 4,755 5,026
Operation, maintenance and other 3,335 2,463 2,636
Depreciation and amortization 2,543 2,393 2,151
Property and other taxes 657 617 644
Impairment of assets and other charges 2 6 28
Interest expense 1,119 1,064 954
Income Tax Expense 485 426 377
Add: Other 314 262 228
Segment income (loss) 2,415 2,171 1,956
Net income 2,415 2,171 1,956
Capital expenditures 6,125 5,252 4,917
Segment assets 75,838 71,636 67,094
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 2,900 2,597 2,333
Depreciation, amortization and accretion (including amortization of nuclear fuel) 3,666 2,761 2,721
Losses on sales of other assets 27 27 27
Progress Energy | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 4,267 4,755 5,026
Duke Energy Progress      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 7,386 7,017 6,488
Less:      
Cost of sales 2,518 2,409 2,203
Operation, maintenance and other 1,455 1,388 1,379
Depreciation and amortization 1,406 1,336 1,266
Property and other taxes 172 177 164
Impairment of assets and other charges 2 6 29
Interest expense 526 493 427
Income Tax Expense 223 189 149
Add: Other 198 145 127
Segment income (loss) 1,282 1,164 998
Net income 1,282 1,164 998
Capital expenditures 3,428 2,803 2,387
Segment assets 42,527 39,493 36,924
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 1,505 1,353 1,147
Depreciation, amortization and accretion (including amortization of nuclear fuel) 1,602 1,520 1,460
Duke Energy Progress | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,518 2,409 2,203
Duke Energy Florida      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 7,105 6,595 7,036
Less:      
Cost of sales 1,749 2,346 2,823
Operation, maintenance and other 1,865 1,055 1,239
Depreciation and amortization 1,137 1,057 885
Property and other taxes 486 440 480
Impairment of assets and other charges 0 0 (1)
Interest expense 479 457 413
Income Tax Expense 289 268 261
Add: Other 93 89 80
Segment income (loss) 1,193 1,061 1,016
Net income 1,193 1,061 1,016
Capital expenditures 2,698 2,449 2,529
Segment assets 29,656 28,569 26,601
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 1,482 1,329 1,277
Depreciation, amortization and accretion (including amortization of nuclear fuel) 2,063 1,239 1,260
Losses on sales of other assets 3 3 2
Duke Energy Florida | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 1,749 2,346 2,823
Piedmont      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,237 1,729 1,628
Less:      
Cost of sales 784 423 430
Operation, maintenance and other 408 359 344
Depreciation and amortization 282 261 237
Property and other taxes 67 55 59
Impairment of assets and other charges 0 0 (4)
Interest expense 193 185 165
Income Tax Expense 112 95 84
Add: Equity in (losses) earnings of unconsolidated affiliates 8 8 9
Add: Other 41 54 57
Segment income (loss) 440 413 379
Net income 440 413 379
Capital expenditures 807 1,025 1,036
Segment assets 12,470 11,799 11,067
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 552 508 463
Nonregulated electric and other 28 27 25
Depreciation, amortization and accretion (including amortization of nuclear fuel) 285 264 239
Piedmont | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 784 423 430
Operating Segments      
Less:      
Operation, maintenance and other   5,663 5,764
Depreciation and amortization   5,528 5,033
Property and other taxes   1,454 1,449
Impairment of assets and other charges   37 71
Interest expense   2,262 2,067
Income Tax Expense   919 858
Noncontrolling interests   87 97
Preferred dividends   0 0
Preferred redemption costs   0  
Add: Equity in (losses) earnings of unconsolidated affiliates   (59) 47
Add: Other   600 604
Segment income (loss)   5,224 4,742
Operating Segments | Fuel used in electric generation and purchased power      
Less:      
Cost of sales   9,285 9,164
Operating Segments | Cost of natural gas      
Less:      
Cost of sales   565 593
Other      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 28 38 37
Less:      
Operation, maintenance and other (35) (79) 36
Depreciation and amortization 312 293 248
Property and other taxes 14 12 (49)
Impairment of assets and other charges 5 1 14
Interest expense 1,317 1,245 1,097
Income Tax Expense (366) (329) (420)
Noncontrolling interests 0 0 0
Preferred dividends 56 106 106
Preferred redemption costs   16  
Add: Equity in (losses) earnings of unconsolidated affiliates 36 50 66
Add: Other 117 229 216
Segment income (loss) (985) (829) (616)
Capital expenditures 335 261 995
Segment assets 4,320 4,202 4,095
Other | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Other | Cost of natural gas      
Less:      
Cost of sales 0 0 0
Eliminations, Corporate and Reconciling Items      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 165 157 134
Eliminations And Reconciling Items      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 137 119 97
Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues (288) (283) (261)
Less:      
Operation, maintenance and other (199) (195) (175)
Depreciation and amortization (28) (28) (28)
Property and other taxes 1 0 0
Impairment of assets and other charges 0 0 0
Interest expense (82) (123) (150)
Income Tax Expense 0    
Noncontrolling interests 0 0 0
Preferred dividends   0 0
Preferred redemption costs   0  
Add: Other (100) (142) (170)
Eliminations | Fuel used in electric generation and purchased power      
Less:      
Cost of sales (80) (79) (78)
Eliminations | Cost of natural gas      
Less:      
Cost of sales 0 0 0
Eliminations | Duke Energy Indiana      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0 0
Less:      
Operation, maintenance and other 10 5 18
Depreciation and amortization 0 0 0
Property and other taxes 0 0 0
Impairment of assets and other charges     1
Interest expense 0 1 0
Income Tax Expense (3) (1) (5)
Add: Other (1) 0 (1)
Segment income (loss) (8) (5) (15)
Capital expenditures 0 0 0
Segment assets 25 1 (155)
Eliminations | Duke Energy Indiana | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Eliminations | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0 0
Less:      
Operation, maintenance and other 8 10 9
Depreciation and amortization 1 (1) 0
Property and other taxes 0 0 0
Impairment of assets and other charges     1
Interest expense 1 (2) 0
Income Tax Expense (2) (1) (2)
Add: Other 0 0 (1)
Segment income (loss) (8) (6) (9)
Capital expenditures 0 0 0
Segment assets 135 51 (108)
Eliminations | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Eliminations | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 0 0 0
Eliminations | Duke Energy Carolinas      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0 0
Less:      
Operation, maintenance and other 43 30 85
Depreciation and amortization 0 0 0
Property and other taxes 0 0 0
Impairment of assets and other charges 0 0 0
Interest expense 0 0 0
Income Tax Expense (11) (7) (21)
Add: Other (3) (3) (3)
Segment income (loss) (35) (26) (67)
Capital expenditures 0 0 0
Segment assets 400 223 202
Eliminations | Duke Energy Carolinas | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Eliminations | Progress Energy      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 18 21 20
Less:      
Operation, maintenance and other 55 50 82
Depreciation and amortization 0 0 0
Property and other taxes (1) 0 0
Impairment of assets and other charges 0 0 0
Interest expense 114 115 114
Income Tax Expense (38) (39) (49)
Add: Other 23 38 18
Segment income (loss) (89) (67) (109)
Capital expenditures 0 0 0
Segment assets 4,153 3,685 3,912
Eliminations | Progress Energy | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Eliminations | Duke Energy Progress      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0 0
Less:      
Operation, maintenance and other 24 18 37
Depreciation and amortization 0 0 0
Property and other taxes 0 0 0
Impairment of assets and other charges 0 0 0
Interest expense 0 1 0
Income Tax Expense (6) (5) (9)
Add: Other (2) 7 (1)
Segment income (loss) (20) (7) (29)
Capital expenditures 0 0 0
Segment assets 364 91 104
Eliminations | Duke Energy Progress | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Eliminations | Duke Energy Florida      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0 0
Less:      
Operation, maintenance and other 16 12 27
Depreciation and amortization 0 0 0
Property and other taxes 0 0 0
Impairment of assets and other charges     0
Interest expense 0 0 0
Income Tax Expense (5) (3) (7)
Add: Other 2 3 (2)
Segment income (loss) (9) (6) (22)
Capital expenditures 0 0 0
Segment assets 134 20 239
Eliminations | Duke Energy Florida | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Eliminations | Piedmont      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0 0
Less:      
Operation, maintenance and other 15 4 8
Depreciation and amortization 0 0 0
Property and other taxes 0 0 0
Impairment of assets and other charges     0
Interest expense 0 0 0
Income Tax Expense (3) 1 0
Add: Equity in (losses) earnings of unconsolidated affiliates 8 8 9
Add: Other (5) 0 (2)
Segment income (loss) (9) 3 (1)
Capital expenditures 0 0 0
Segment assets 86 92 89
Eliminations | Piedmont | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Total Reportable Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 32,209 30,319 29,023
Total Reportable Segments | Operating Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 32,360 30,483 29,187
Less:      
Operation, maintenance and other 6,932    
Depreciation and amortization 6,040    
Property and other taxes 1,582    
Impairment of assets and other charges (9)    
Interest expense 2,399    
Income Tax Expense 1,008    
Noncontrolling interests 103    
Preferred dividends 0    
Add: Equity in (losses) earnings of unconsolidated affiliates 15    
Add: Other 697    
Segment income (loss) 5,896    
Capital expenditures 13,667 12,002 11,627
Segment assets 191,416 182,141 172,798
Total Reportable Segments | Operating Segments | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 8,138    
Total Reportable Segments | Operating Segments | Cost of natural gas      
Less:      
Cost of sales 983    
Total Reportable Segments | Operating Segments | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,797 2,545 2,507
Less:      
Operation, maintenance and other 482 475 469
Depreciation and amortization 465 404 367
Property and other taxes 432 400 364
Impairment of assets and other charges     2
Interest expense 202 194 169
Income Tax Expense 70 65 65
Add: Other 25 20 43
Segment income (loss) 346 347 343
Capital expenditures 929 815 939
Segment assets 13,311 12,717 12,324
Total Reportable Segments | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 626 538 608
Total Reportable Segments | Operating Segments | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 199 142 163
Total Reportable Segments | Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 151 164 164
Electric Utilities and Infrastructure      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 29,297 28,020 26,846
Less:      
Add: Equity in (losses) earnings of unconsolidated affiliates 0 (11) 7
Electric Utilities and Infrastructure | Litigation | Duke Energy Carolinas      
Less:      
Impairment of assets and other charges     35
Electric Utilities and Infrastructure | Litigation | Duke Energy Progress      
Less:      
Impairment of assets and other charges     33
Electric Utilities and Infrastructure | Operating Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 29,357 28,093 26,921
Less:      
Operation, maintenance and other 6,414 5,185 5,309
Depreciation and amortization 5,605 5,128 4,684
Property and other taxes 1,418 1,305 1,320
Impairment of assets and other charges (9) 37 75
Interest expense 2,132 2,006 1,850
Income Tax Expense 862 820 742
Noncontrolling interests 104 88 99
Preferred dividends   0 0
Preferred redemption costs   0  
Add: Equity in (losses) earnings of unconsolidated affiliates   (11) 7
Add: Other 644 542 538
Segment income (loss) 5,337 4,770 4,223
Capital expenditures 12,553 10,689 10,135
Segment assets 172,427 164,010 155,449
Electric Utilities and Infrastructure | Operating Segments | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 8,138 9,285 9,164
Electric Utilities and Infrastructure | Operating Segments | Cost of natural gas      
Less:      
Cost of sales 0 0 0
Electric Utilities and Infrastructure | Operating Segments | Nonoperating Income (Expense)      
Less:      
Add: Equity in (losses) earnings of unconsolidated affiliates   4  
Electric Utilities and Infrastructure | Operating Segments | Regulated and Unregulated Operating Revenue      
Segment Reporting Information Assets [Abstract]      
Customer Billing Adjustments   17  
Electric Utilities and Infrastructure | Operating Segments | Impairment Of Assets And Other Charges      
Segment Reporting Information Assets [Abstract]      
Rate Case Order Income (Expense)   (42)  
Electric Utilities and Infrastructure | Operating Segments | Operation, maintenance and other      
Segment Reporting Information Assets [Abstract]      
Rate Case Order Income (Expense)   (2)  
Electric Utilities and Infrastructure | Operating Segments | Interest Expense      
Segment Reporting Information Assets [Abstract]      
Rate Case Order Income (Expense)   11  
Electric Utilities and Infrastructure | Operating Segments | Equity In (Losses) Earnings Of Unconsolidated Affiliates      
Less:      
Add: Equity in (losses) earnings of unconsolidated affiliates   15  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 3,544 3,040 3,399
Less:      
Operation, maintenance and other 801 666 695
Depreciation and amortization 823 676 666
Property and other taxes 61 50 59
Impairment of assets and other charges     (1)
Interest expense 243 228 213
Income Tax Expense 85 72 115
Add: Other 62 62 77
Segment income (loss) 528 446 512
Add back: Net income attributable to noncontrolling interest   4  
Capital expenditures 1,332 935 961
Segment assets 16,321 15,726 14,966
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 1,065 964 1,217
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana | Regulated and Unregulated Operating Revenue      
Less:      
Segment income (loss)   29  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,045 1,905 1,868
Less:      
Operation, maintenance and other 366 366 351
Depreciation and amortization 318 273 257
Property and other taxes 335 306 294
Impairment of assets and other charges     2
Interest expense 131 126 116
Income Tax Expense 43 47 42
Add: Other 17 15 29
Segment income (loss) 243 264 227
Capital expenditures 600 535 520
Segment assets 8,575 8,211 7,978
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 626 538 608
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 0 0 0
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 9,713 9,718 8,288
Less:      
Operation, maintenance and other 1,959 1,710 1,689
Depreciation and amortization 1,903 1,768 1,593
Property and other taxes 349 346 320
Impairment of assets and other charges (11) 31 44
Interest expense 783 722 686
Income Tax Expense 205 233 162
Add: Other 267 252 267
Segment income (loss) 2,143 1,909 1,537
Capital expenditures 4,477 3,966 3,733
Segment assets 58,775 54,782 51,908
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,649 3,251 2,524
Electric Utilities and Infrastructure | Operating Segments | Progress Energy      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 14,491 13,612 13,524
Less:      
Operation, maintenance and other 3,280 2,413 2,554
Depreciation and amortization 2,543 2,393 2,151
Property and other taxes 658 617 644
Impairment of assets and other charges 2 6 28
Interest expense 1,005 949 840
Income Tax Expense 523 465 426
Add: Other 291 224 210
Segment income (loss) 2,504 2,238 2,065
Capital expenditures 6,125 5,252 4,917
Segment assets 71,685 67,951 63,182
Electric Utilities and Infrastructure | Operating Segments | Progress Energy | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 4,267 4,755 5,026
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 7,386 7,017 6,488
Less:      
Operation, maintenance and other 1,431 1,370 1,342
Depreciation and amortization 1,406 1,336 1,266
Property and other taxes 172 177 164
Impairment of assets and other charges 2 6 29
Interest expense 526 492 427
Income Tax Expense 229 194 158
Add: Other 200 138 128
Segment income (loss) 1,302 1,171 1,027
Capital expenditures 3,428 2,803 2,387
Segment assets 42,163 39,402 36,820
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,518 2,409 2,203
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Florida      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 7,105 6,595 7,036
Less:      
Operation, maintenance and other 1,849 1,043 1,212
Depreciation and amortization 1,137 1,057 885
Property and other taxes 486 440 480
Impairment of assets and other charges     (1)
Interest expense 479 457 413
Income Tax Expense 294 271 268
Add: Other 91 86 82
Segment income (loss) 1,202 1,067 1,038
Capital expenditures 2,698 2,449 2,529
Segment assets 29,522 28,549 26,362
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Florida | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 1,749 2,346 2,823
Electric Utilities and Infrastructure | Operating Segments | Litigation | Duke Energy Carolinas | Operation, Maintenance and Other      
Less:      
Add: Other     8
Electric Utilities and Infrastructure | Operating Segments | Litigation | Duke Energy Progress | Operation, Maintenance and Other      
Less:      
Add: Other     8
Electric Utilities and Infrastructure | Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 60 73 75
Gas Utilities and Infrastructure      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,912 2,299 2,177
Less:      
Add: Equity in (losses) earnings of unconsolidated affiliates 15 (48) 40
Gas Utilities and Infrastructure | Impairments For Certain Renewable Natural Gas Investments      
Less:      
Add: Equity in (losses) earnings of unconsolidated affiliates   54  
Gas Utilities and Infrastructure | Operating Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 3,003 2,390 2,266
Less:      
Operation, maintenance and other 518 478 455
Depreciation and amortization 435 400 349
Property and other taxes 164 149 129
Impairment of assets and other charges 0 0 (4)
Interest expense 267 256 217
Income Tax Expense 146 99 116
Noncontrolling interests (1) (1) (2)
Preferred dividends   0 0
Preferred redemption costs   0  
Add: Equity in (losses) earnings of unconsolidated affiliates 15 (48) 40
Add: Other 53 58 66
Segment income (loss) 559 454 519
Capital expenditures 1,114 1,313 1,492
Segment assets 18,989 18,131 17,349
Gas Utilities and Infrastructure | Operating Segments | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Gas Utilities and Infrastructure | Operating Segments | Cost of natural gas      
Less:      
Cost of sales 983 565 593
Gas Utilities and Infrastructure | Operating Segments | Operation, maintenance and other      
Segment Reporting Information Assets [Abstract]      
Customer Billing Adjustments   1  
Gas Utilities and Infrastructure | Operating Segments | Other Segment Income (Expense)      
Segment Reporting Information Assets [Abstract]      
Customer Billing Adjustments   3  
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 752 640 639
Less:      
Operation, maintenance and other 116 109 118
Depreciation and amortization 147 131 110
Property and other taxes 97 94 70
Impairment of assets and other charges     0
Interest expense 71 68 53
Income Tax Expense 27 18 23
Add: Other 8 5 14
Segment income (loss) 103 83 116
Capital expenditures 329 280 419
Segment assets 4,736 4,506 4,346
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 199 142 163
Gas Utilities and Infrastructure | Operating Segments | Piedmont      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,237 1,729 1,628
Less:      
Operation, maintenance and other 393 355 336
Depreciation and amortization 282 261 237
Property and other taxes 67 55 59
Impairment of assets and other charges     (4)
Interest expense 193 185 165
Income Tax Expense 115 94 84
Add: Equity in (losses) earnings of unconsolidated affiliates 0 0 0
Add: Other 46 54 59
Segment income (loss) 449 410 380
Capital expenditures 807 1,025 1,036
Segment assets 12,384 11,707 10,978
Gas Utilities and Infrastructure | Operating Segments | Piedmont | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 784 423 430
Gas Utilities and Infrastructure | Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues $ 91 91 89
Other      
Less:      
Impairment of assets and other charges     14
Other | Operation, Maintenance and Other      
Less:      
Add: Other     $ 110
Other | Hurricane Helene      
Less:      
Operation, maintenance and other   $ 23  
v3.25.4
Business Segments (Narrative) (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
reportable_segment
segment
Dec. 31, 2024
USD ($)
asset
Dec. 31, 2023
USD ($)
Segment Reporting Information [Line Items]      
Number of operating segments | segment 2    
Number of reportable segments | segment 2    
Operating Revenues $ 32,237 $ 30,357 $ 29,060
Duke Energy Progress      
Segment Reporting Information [Line Items]      
Number of reportable segments | reportable_segment 1    
Operating Revenues $ 7,386 7,017 6,488
Duke Energy Carolinas      
Segment Reporting Information [Line Items]      
Number of reportable segments | reportable_segment 1    
Operating Revenues $ 9,713 9,718 8,288
Progress Energy      
Segment Reporting Information [Line Items]      
Number of reportable segments | reportable_segment 1    
Operating Revenues $ 14,509 13,633 13,544
Duke Energy Florida      
Segment Reporting Information [Line Items]      
Number of reportable segments | reportable_segment 1    
Operating Revenues $ 7,105 6,595 7,036
Duke Energy Ohio      
Segment Reporting Information [Line Items]      
Number of reportable segments | segment 2    
Operating Revenues $ 2,797 $ 2,545 2,507
Duke Energy Indiana      
Segment Reporting Information [Line Items]      
Number of reportable segments | asset   1  
Operating Revenues $ 3,544 $ 3,040 3,399
Piedmont      
Segment Reporting Information [Line Items]      
Number of reportable segments | reportable_segment 1    
Operating Revenues $ 2,237 $ 1,729 $ 1,628
v3.25.4
Business Segments (Schedule of Revenue, By Products and Services) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information [Line Items]      
Operating Revenues $ 32,237 $ 30,357 $ 29,060
Total Reportable Segments      
Segment Reporting Information [Line Items]      
Operating Revenues 32,209 30,319 29,023
Electric Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 29,297 28,020 26,846
Gas Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 2,912 2,299 2,177
Operating Segments | Total Reportable Segments      
Segment Reporting Information [Line Items]      
Operating Revenues 32,360 30,483 29,187
Operating Segments | Electric Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 29,357 28,093 26,921
Operating Segments | Gas Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 3,003 2,390 2,266
Operating Segments | Retail Electric      
Segment Reporting Information [Line Items]      
Operating Revenues 25,504 24,593 23,484
Operating Segments | Retail Electric | Electric Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 25,504 24,593 23,484
Operating Segments | Retail Electric | Gas Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 0 0 0
Operating Segments | Wholesale Electric      
Segment Reporting Information [Line Items]      
Operating Revenues 2,423 2,219 2,193
Operating Segments | Wholesale Electric | Electric Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 2,423 2,219 2,193
Operating Segments | Wholesale Electric | Gas Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 0 0 0
Operating Segments | Retail Natural Gas      
Segment Reporting Information [Line Items]      
Operating Revenues 2,782 2,320 2,199
Operating Segments | Retail Natural Gas | Electric Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 0   0
Operating Segments | Retail Natural Gas | Gas Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 2,782 2,320 2,199
Operating Segments | Other      
Segment Reporting Information [Line Items]      
Operating Revenues 1,651 1,351 1,311
Operating Segments | Other | Electric Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 1,430 1,281 1,244
Operating Segments | Other | Gas Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues $ 221 $ 70 $ 67
v3.25.4
Regulatory Matters (Schedule of Regulatory Assets and Liabilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets $ 16,313 $ 16,959
Less: Current portion 1,934 2,739
Total noncurrent regulatory assets 14,379 14,220
Total regulatory liabilities 16,953 15,942
Less: Current portion 1,271 1,421
Total noncurrent regulatory liabilities 15,682 14,521
COR regulatory liability    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 5,336 5,302
Net regulatory liability related to income taxes    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 4,748 5,356
AROs – nuclear and other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 2,982 2,289
Deferred nuclear PTC    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 1,377 676
Hedge costs deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 582 583
Renewable energy credits    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 267 241
Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 184 232
Deferred fuel and purchased power    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 28 223
Storm cost recovery    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 262 6
DSM/EE    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 26 69
Storm reserve    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 132  
Nuclear insurance distributions reserve    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 163 152
Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 866 813
AROs – coal ash    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 3,670 3,384
Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 2,281 2,524
Storm cost deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 73 1,951
Storm cost securitized balance, net    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 2,567 1,023
AROs – nuclear and other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 602 948
Nuclear asset securitized balance, net    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 717 771
Debt fair value adjustment    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 665 719
COR regulatory asset    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 860 646
Deferred fuel and purchased power    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 619 588
Hedge costs deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 365 352
PISCC and deferred operating expenses    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 291 331
Retired generation facilities    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 252 337
Customer connect project    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 234 257
Grid deferral    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 257 255
Incremental COVID-19 expenses    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 202 231
Vacation accrual    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 240 228
Deferred asset – Lee and Harris COLA    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 177 215
Advanced metering infrastructure (AMI)    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 162 204
Demand side management (DSM) / Energy efficiency (EE)    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 335 199
CEP deferral    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 200 195
NCEMPA deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 202 179
Decoupling    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 118 162
Nuclear deferral    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 117 134
Deferred pipeline integrity costs    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 117 129
COR settlement    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 106 110
Derivatives – natural gas supply contracts    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 72 94
Deferred coal ash handling system costs    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 60 77
Qualifying facility contract buyouts    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 55 62
Network Integration Transmission Services deferral    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 31 31
Transmission expansion obligation    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 30 31
East Bend deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 20 24
Propane caverns    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 22 24
Deferred purchased gas costs    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 26 9
Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 568 535
Progress Energy    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 7,403 8,265
Less: Current portion 753 1,647
Total noncurrent regulatory assets 6,650 6,618
Total regulatory liabilities 5,951 5,780
Less: Current portion 350 522
Total noncurrent regulatory liabilities 5,601 5,258
Progress Energy | COR regulatory liability    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 3,084 2,984
Progress Energy | Net regulatory liability related to income taxes    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 1,741 1,882
Progress Energy | Deferred nuclear PTC    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 197 95
Progress Energy | Hedge costs deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 248 281
Progress Energy | Renewable energy credits    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 146 139
Progress Energy | Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 11 12
Progress Energy | Deferred fuel and purchased power    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 28 94
Progress Energy | Storm cost recovery    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 90 6
Progress Energy | Storm reserve    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 132  
Progress Energy | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 274 287
Progress Energy | AROs – coal ash    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 1,544 1,335
Progress Energy | Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 744 828
Progress Energy | Storm cost deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 49 1,238
Progress Energy | Storm cost securitized balance, net    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 1,239 822
Progress Energy | AROs – nuclear and other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 564 905
Progress Energy | Nuclear asset securitized balance, net    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 717 771
Progress Energy | COR regulatory asset    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 746 571
Progress Energy | Deferred fuel and purchased power    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 228 282
Progress Energy | Hedge costs deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 135 126
Progress Energy | PISCC and deferred operating expenses    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 37 37
Progress Energy | Retired generation facilities    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 176 202
Progress Energy | Customer connect project    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 107 116
Progress Energy | Grid deferral    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 63 54
Progress Energy | Incremental COVID-19 expenses    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 94 89
Progress Energy | Vacation accrual    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 45 43
Progress Energy | Deferred asset – Lee and Harris COLA    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 4 10
Progress Energy | Advanced metering infrastructure (AMI)    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 48 70
Progress Energy | Demand side management (DSM) / Energy efficiency (EE)    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 247 199
Progress Energy | NCEMPA deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 202 179
Progress Energy | Decoupling    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 27 32
Progress Energy | Nuclear deferral    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 53 53
Progress Energy | COR settlement    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 28 29
Progress Energy | Deferred coal ash handling system costs    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 13 17
Progress Energy | Qualifying facility contract buyouts    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 55 62
Progress Energy | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 238 195
Duke Energy Carolinas    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 5,232 4,884
Less: Current portion 730 685
Total noncurrent regulatory assets 4,502 4,199
Total regulatory liabilities 8,178 7,210
Less: Current portion 569 618
Total noncurrent regulatory liabilities 7,609 6,592
Duke Energy Carolinas | COR regulatory liability    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 1,383 1,479
Duke Energy Carolinas | Net regulatory liability related to income taxes    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 1,608 1,951
Duke Energy Carolinas | AROs – nuclear and other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 2,982 2,289
Duke Energy Carolinas | Deferred nuclear PTC    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 1,180 581
Duke Energy Carolinas | Hedge costs deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 228 199
Duke Energy Carolinas | Renewable energy credits    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 121 102
Duke Energy Carolinas | Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 18 35
Duke Energy Carolinas | Deferred fuel and purchased power    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities   108
Duke Energy Carolinas | Storm cost recovery    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 172  
Duke Energy Carolinas | DSM/EE    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities   53
Duke Energy Carolinas | Nuclear insurance distributions reserve    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 163 152
Duke Energy Carolinas | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 323 261
Duke Energy Carolinas | AROs – coal ash    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 1,506 1,481
Duke Energy Carolinas | Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 592 668
Duke Energy Carolinas | Storm cost deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets   691
Duke Energy Carolinas | Storm cost securitized balance, net    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 1,328 201
Duke Energy Carolinas | Deferred fuel and purchased power    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 306 298
Duke Energy Carolinas | Hedge costs deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 199 202
Duke Energy Carolinas | PISCC and deferred operating expenses    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 39 42
Duke Energy Carolinas | Retired generation facilities    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 56 110
Duke Energy Carolinas | Customer connect project    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 48 54
Duke Energy Carolinas | Grid deferral    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 194 201
Duke Energy Carolinas | Incremental COVID-19 expenses    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 104 137
Duke Energy Carolinas | Vacation accrual    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 91 86
Duke Energy Carolinas | Deferred asset – Lee and Harris COLA    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 173 205
Duke Energy Carolinas | Advanced metering infrastructure (AMI)    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 102 114
Duke Energy Carolinas | Demand side management (DSM) / Energy efficiency (EE)    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 86  
Duke Energy Carolinas | Decoupling    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 45 24
Duke Energy Carolinas | Nuclear deferral    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 64 81
Duke Energy Carolinas | COR settlement    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 78 81
Duke Energy Carolinas | Deferred coal ash handling system costs    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 47 60
Duke Energy Carolinas | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 174 148
Duke Energy Progress    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 5,195 5,181
Less: Current portion 652 626
Total noncurrent regulatory assets 4,543 4,555
Total regulatory liabilities 5,081 4,918
Less: Current portion 274 348
Total noncurrent regulatory liabilities 4,807 4,570
Duke Energy Progress | COR regulatory liability    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 3,084 2,984
Duke Energy Progress | Net regulatory liability related to income taxes    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 1,206 1,318
Duke Energy Progress | Deferred nuclear PTC    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 197 95
Duke Energy Progress | Hedge costs deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 126 151
Duke Energy Progress | Renewable energy credits    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 146 139
Duke Energy Progress | Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 11 12
Duke Energy Progress | Deferred fuel and purchased power    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 10 10
Duke Energy Progress | Storm cost recovery    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 90 6
Duke Energy Progress | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 211 203
Duke Energy Progress | AROs – coal ash    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 1,531 1,322
Duke Energy Progress | Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 396 439
Duke Energy Progress | Storm cost deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 20 276
Duke Energy Progress | Storm cost securitized balance, net    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 1,239 822
Duke Energy Progress | AROs – nuclear and other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 554 900
Duke Energy Progress | Deferred fuel and purchased power    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 227 277
Duke Energy Progress | Hedge costs deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 87 85
Duke Energy Progress | PISCC and deferred operating expenses    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 37 37
Duke Energy Progress | Retired generation facilities    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 87 108
Duke Energy Progress | Customer connect project    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 42 45
Duke Energy Progress | Grid deferral    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 63 54
Duke Energy Progress | Incremental COVID-19 expenses    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 94 89
Duke Energy Progress | Vacation accrual    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 45 43
Duke Energy Progress | Deferred asset – Lee and Harris COLA    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 4 10
Duke Energy Progress | Advanced metering infrastructure (AMI)    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 39 54
Duke Energy Progress | Demand side management (DSM) / Energy efficiency (EE)    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 229 188
Duke Energy Progress | NCEMPA deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 202 179
Duke Energy Progress | Decoupling    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 27 32
Duke Energy Progress | Nuclear deferral    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 53 53
Duke Energy Progress | COR settlement    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 28 29
Duke Energy Progress | Deferred coal ash handling system costs    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 13 17
Duke Energy Progress | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 178 122
Duke Energy Florida    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 2,208 3,086
Less: Current portion 102 1,022
Total noncurrent regulatory assets 2,106 2,064
Total regulatory liabilities 870 862
Less: Current portion 76 174
Total noncurrent regulatory liabilities 794 688
Duke Energy Florida | Net regulatory liability related to income taxes    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 535 564
Duke Energy Florida | Hedge costs deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 122 130
Duke Energy Florida | Deferred fuel and purchased power    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 18 84
Duke Energy Florida | Storm reserve    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 132  
Duke Energy Florida | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 63 84
Duke Energy Florida | AROs – coal ash    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 13 13
Duke Energy Florida | Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 348 389
Duke Energy Florida | Storm cost deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 29 962
Duke Energy Florida | AROs – nuclear and other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 10 5
Duke Energy Florida | Nuclear asset securitized balance, net    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 717 771
Duke Energy Florida | COR regulatory asset    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 746 571
Duke Energy Florida | Hedge costs deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 48 41
Duke Energy Florida | Retired generation facilities    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 89 94
Duke Energy Florida | Customer connect project    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 65 71
Duke Energy Florida | Advanced metering infrastructure (AMI)    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 9 16
Duke Energy Florida | Qualifying facility contract buyouts    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 55 62
Duke Energy Florida | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 79 91
Duke Energy Ohio    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 772 793
Less: Current portion 86 88
Total noncurrent regulatory assets 686 705
Total regulatory liabilities 527 499
Less: Current portion 57 34
Total noncurrent regulatory liabilities 470 465
Duke Energy Ohio | Net regulatory liability related to income taxes    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 405 432
Duke Energy Ohio | Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 13 14
Duke Energy Ohio | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 109 53
Duke Energy Ohio | AROs – coal ash    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 14 14
Duke Energy Ohio | Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 121 131
Duke Energy Ohio | COR regulatory asset    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 114 75
Duke Energy Ohio | Deferred fuel and purchased power    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 25 8
Duke Energy Ohio | PISCC and deferred operating expenses    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 14 15
Duke Energy Ohio | Customer connect project    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 39 44
Duke Energy Ohio | CEP deferral    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 200 195
Duke Energy Ohio | Decoupling    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 18 29
Duke Energy Ohio | Deferred pipeline integrity costs    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 26 28
Duke Energy Ohio | Network Integration Transmission Services deferral    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 31 31
Duke Energy Ohio | Transmission expansion obligation    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 30 31
Duke Energy Ohio | East Bend deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 20 24
Duke Energy Ohio | Propane caverns    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 22 24
Duke Energy Ohio | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 98 144
Duke Energy Indiana    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 1,225 1,153
Less: Current portion 193 113
Total noncurrent regulatory assets 1,032 1,040
Total regulatory liabilities 1,460 1,587
Less: Current portion 275 183
Total noncurrent regulatory liabilities 1,185 1,404
Duke Energy Indiana | COR regulatory liability    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 444 434
Duke Energy Indiana | Net regulatory liability related to income taxes    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 641 725
Duke Energy Indiana | Hedge costs deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 106 103
Duke Energy Indiana | Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 113 139
Duke Energy Indiana | Deferred fuel and purchased power    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities   21
Duke Energy Indiana | DSM/EE    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 19 11
Duke Energy Indiana | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 137 154
Duke Energy Indiana | AROs – coal ash    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 606 554
Duke Energy Indiana | Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 203 212
Duke Energy Indiana | Storm cost deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 21 17
Duke Energy Indiana | Deferred fuel and purchased power    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 60  
Duke Energy Indiana | Hedge costs deferrals    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 30 23
Duke Energy Indiana | PISCC and deferred operating expenses    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 201 237
Duke Energy Indiana | Retired generation facilities    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 20 25
Duke Energy Indiana | Customer connect project    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 18 19
Duke Energy Indiana | Advanced metering infrastructure (AMI)    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 10 12
Duke Energy Indiana | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 56 54
Piedmont    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 456 528
Less: Current portion 106 141
Total noncurrent regulatory assets 350 387
Total regulatory liabilities 822 847
Less: Current portion 20 64
Total noncurrent regulatory liabilities 802 783
Piedmont | COR regulatory liability    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 425 405
Piedmont | Net regulatory liability related to income taxes    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 353 366
Piedmont | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory liabilities 44 76
Piedmont | Accrued pension and OPEB    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 131 144
Piedmont | AROs – nuclear and other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 25 25
Piedmont | Customer connect project    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 22 24
Piedmont | Vacation accrual    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 15 14
Piedmont | Decoupling    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 28 77
Piedmont | Deferred pipeline integrity costs    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 91 101
Piedmont | Derivatives – natural gas supply contracts    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 72 94
Piedmont | Deferred purchased gas costs    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 26 9
Piedmont | Other    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets 19 26
Piedmont | Pipeline Integrity Management – Transmission/Distribution    
Regulatory Assets Liabilities [Line Items]    
Total regulatory assets $ 27 $ 14
v3.25.4
Regulatory Matters (Duke Energy Narrative) (Details)
customer in Thousands, $ in Millions
 1 Months Ended 12 Months Ended 24 Months Ended
Jan. 03, 2026
USD ($)
Oct. 02, 2025
USD ($)
Mar. 31, 2025
Dec. 02, 2024
USD ($)
Oct. 12, 2023
USD ($)
Jan. 31, 2026
USD ($)
customer
Dec. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2025
USD ($)
Feb. 24, 2026
USD ($)
MW
Public Utilities, General Disclosures [Line Items]                        
Capital expenditures               $ 14,002 $ 12,263 $ 12,622    
Operation, maintenance and other               6,698 5,389 5,625    
Regulatory assets             $ 16,313 16,313 16,959   $ 16,313  
Other Noncurrent Assets: Regulatory assets             $ 14,379 $ 14,379 14,220   $ 14,379  
Nuclear Regulatory Commission                        
Public Utilities, General Disclosures [Line Items]                        
Operating license extension (in years)               20 years        
Duke Energy Ohio                        
Public Utilities, General Disclosures [Line Items]                        
Limit of total capital (as a percent)             30.00% 30.00%     30.00%  
Capital expenditures               $ 929 815 939    
Operation, maintenance and other               490 485 478    
Regulatory assets             $ 772 772 793   $ 772  
Other Noncurrent Assets: Regulatory assets             $ 686 $ 686 705   $ 686  
Duke Energy Ohio | Duke Energy Kentucky Electric Base Rate Case, Electric Base Rates | KPSC                        
Public Utilities, General Disclosures [Line Items]                        
Approved return on equity (as a percent)         9.75%              
Duke Energy Ohio | Duke Energy Kentucky Electric Base Rate Case | KPSC                        
Public Utilities, General Disclosures [Line Items]                        
Approved rate increase (decrease) amount by state commission         $ 48              
Duke Energy Ohio | Maximum | Duke Energy Kentucky Electric Base Rate Case | KPSC                        
Public Utilities, General Disclosures [Line Items]                        
Equity ratio (as a percent)         52.145%              
Duke Energy Kentucky                        
Public Utilities, General Disclosures [Line Items]                        
Required minimum equity capital structure (as a percent)             35.00% 35.00%     35.00%  
Duke Energy Kentucky | Duke Energy Kentucky 2024 Electric Base Rate Case | KPSC                        
Public Utilities, General Disclosures [Line Items]                        
Requested rate increase (decrease)       $ 70                
Duke Energy Kentucky | Duke Energy Kentucky 2025 Natural Gas Base Rate Case | Kentucky Public Service Commission (KPSC)                        
Public Utilities, General Disclosures [Line Items]                        
Approved rate increase (decrease) amount by state commission   $ 44                    
Duke Energy Kentucky | Duke Energy Kentucky 2025 Natural Gas Base Rate Case | Kentucky Public Service Commission (KPSC) | Subsequent Event | Forecast                        
Public Utilities, General Disclosures [Line Items]                        
Approved rate increase (decrease) amount by state commission $ 22                      
Approved return on equity (as a percent) 9.80%                      
Equity ratio (as a percent) 52.649%                      
Duke Energy Kentucky | Duke Energy Kentucky Electric Base Rate Case, Electric Base Rates | Kentucky Public Service Commission (KPSC)                        
Public Utilities, General Disclosures [Line Items]                        
Approved return on equity (as a percent)   9.80%                    
Duke Energy Kentucky | Duke Energy Kentucky Electric Base Rate Case | Kentucky Public Service Commission (KPSC)                        
Public Utilities, General Disclosures [Line Items]                        
Equity ratio (as a percent)   52.73%                    
Refund made to customers             $ 7          
Duke Energy Carolinas and Duke Energy Progress | Applications To Combine Utilities | NCUC | Subsequent Event                        
Public Utilities, General Disclosures [Line Items]                        
Guaranteed savings under the regulatory agreement (at least)                       $ 286
Period of guaranteed savings under the regulatory agreement                       14 years
Battery storage capacity removed from portfolio (in MW) | MW                       200
Share the benefits contributions to be provided                       $ 25
Period of share the benefits contributions to be provided                       6 years
Duke Energy Carolinas and Duke Energy Progress | Winter Storm Fern | Subsequent Event                        
Public Utilities, General Disclosures [Line Items]                        
Number of customers impacted | customer           200            
Duke Energy Carolinas and Duke Energy Progress | Winter Storm Fern | Minimum | Subsequent Event                        
Public Utilities, General Disclosures [Line Items]                        
Estimated storm restoration costs           $ 250            
Duke Energy Carolinas and Duke Energy Progress | Winter Storm Fern | Maximum | Subsequent Event                        
Public Utilities, General Disclosures [Line Items]                        
Estimated storm restoration costs           350            
Duke Energy Carolinas and Duke Energy Progress | Hurricanes Helene, Debby and Milton                        
Public Utilities, General Disclosures [Line Items]                        
Capital expenditures               $ 507        
Estimated storm restoration costs                     $ 762  
Duke Energy Carolinas                        
Public Utilities, General Disclosures [Line Items]                        
Capital expenditures               4,477 3,966 3,733    
Operation, maintenance and other               2,002 1,740 1,774    
Regulatory assets             5,232 5,232 4,884   5,232  
Other Noncurrent Assets: Regulatory assets             4,502 4,502 4,199   4,502  
Duke Energy Carolinas | Oconee Nuclear Station Subsequent License Renewal | Nuclear Regulatory Commission | Oconee                        
Public Utilities, General Disclosures [Line Items]                        
Operating license (in years)     20 years                  
Duke Energy Carolinas | Winter Storm Fern | Minimum | Subsequent Event                        
Public Utilities, General Disclosures [Line Items]                        
Estimated storm restoration costs           150            
Duke Energy Carolinas | Winter Storm Fern | Maximum | Subsequent Event                        
Public Utilities, General Disclosures [Line Items]                        
Estimated storm restoration costs           225            
Duke Energy Carolinas | Hurricanes Helene, Debby and Milton                        
Public Utilities, General Disclosures [Line Items]                        
Capital expenditures               408        
Estimated storm restoration costs                     474  
Duke Energy Carolinas | Natural Disasters and Other Casualty Events | Hurricanes Helene, Debby and Milton | NCUC                        
Public Utilities, General Disclosures [Line Items]                        
Storm reserves             200 200     200  
Duke Energy Progress                        
Public Utilities, General Disclosures [Line Items]                        
Capital expenditures               3,428 2,803 2,387    
Operation, maintenance and other               1,455 1,388 $ 1,379    
Regulatory assets             5,195 5,195 5,181   5,195  
Other Noncurrent Assets: Regulatory assets             4,543 4,543 $ 4,555   4,543  
Duke Energy Progress | Winter Storm Fern | Minimum | Subsequent Event                        
Public Utilities, General Disclosures [Line Items]                        
Estimated storm restoration costs           100            
Duke Energy Progress | Winter Storm Fern | Maximum | Subsequent Event                        
Public Utilities, General Disclosures [Line Items]                        
Estimated storm restoration costs           $ 125            
Duke Energy Progress | Hurricanes Helene, Debby and Milton                        
Public Utilities, General Disclosures [Line Items]                        
Capital expenditures               99        
Estimated storm restoration costs                     288  
Duke Energy Progress | Natural Disasters and Other Casualty Events | Hurricanes Helene, Debby and Milton | NCUC                        
Public Utilities, General Disclosures [Line Items]                        
Storm reserves             $ 100 $ 100     $ 100  
v3.25.4
Regulatory Matters (Duke Energy Carolinas Narrative) (Details)
 12 Months Ended 24 Months Ended
Feb. 01, 2026
USD ($)
Nov. 21, 2025
USD ($)
turbine
Rate
MW
Nov. 20, 2025
Nov. 11, 2025
USD ($)
Oct. 30, 2025
USD ($)
MW
Jul. 03, 2024
USD ($)
May 17, 2024
USD ($)
Jan. 04, 2024
Dec. 15, 2023
Aug. 22, 2023
USD ($)
Dec. 14, 2027
USD ($)
Nov. 19, 2027
USD ($)
Dec. 14, 2026
USD ($)
Nov. 19, 2026
USD ($)
Dec. 31, 2025
USD ($)
Dec. 14, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 14, 2024
USD ($)
Dec. 31, 2023
USD ($)
Nov. 19, 2027
USD ($)
Dec. 31, 2025
USD ($)
Dec. 01, 2025
turbine
Nov. 30, 2025
USD ($)
Mar. 21, 2025
USD ($)
Mar. 31, 2024
turbine
MW
Public Utilities, General Disclosures [Line Items]                                                  
Impairment of assets and other charges                             $ (4,000,000)   $ 38,000,000   $ 85,000,000            
Operation, maintenance and other                             6,698,000,000   5,389,000,000   5,625,000,000            
Capital expenditures                             14,002,000,000   12,263,000,000   12,622,000,000            
Other Noncurrent Assets: Regulatory assets                             14,379,000,000   14,220,000,000       $ 14,379,000,000        
Total noncurrent regulatory liabilities                             15,682,000,000   14,521,000,000       15,682,000,000        
Face amount of debt instrument issued                             7,005,000,000   7,740,000,000       7,005,000,000        
Duke Energy Carolinas                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Impairment of assets and other charges                             (11,000,000)   31,000,000   44,000,000            
Operation, maintenance and other                             2,002,000,000   1,740,000,000   1,774,000,000            
Capital expenditures                             4,477,000,000   3,966,000,000   3,733,000,000            
Other Noncurrent Assets: Regulatory assets                             4,502,000,000   4,199,000,000       4,502,000,000        
Total noncurrent regulatory liabilities                             7,609,000,000   6,592,000,000       7,609,000,000        
Face amount of debt instrument issued                             2,243,000,000   1,000,000,000       2,243,000,000        
Duke Energy Carolinas | Hurricanes Helene, Debby and Milton                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Capital expenditures                             408,000,000                    
Estimated storm restoration costs                                         474,000,000        
Duke Energy Carolinas and Duke Energy Progress | Hurricanes Helene, Debby and Milton                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Capital expenditures                             507,000,000                    
Estimated storm restoration costs                                         762,000,000        
Duke Energy Progress                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Impairment of assets and other charges                             2,000,000   6,000,000   29,000,000            
Operation, maintenance and other                             1,455,000,000   1,388,000,000   1,379,000,000            
Capital expenditures                             3,428,000,000   2,803,000,000   $ 2,387,000,000            
Other Noncurrent Assets: Regulatory assets                             4,543,000,000   4,555,000,000       4,543,000,000        
Total noncurrent regulatory liabilities                             4,807,000,000   4,570,000,000       4,807,000,000        
Face amount of debt instrument issued                             2,561,000,000   $ 677,000,000       2,561,000,000        
Duke Energy Progress | Hurricanes Helene, Debby and Milton                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Capital expenditures                             99,000,000                    
Estimated storm restoration costs                                         288,000,000        
NCUC | Duke Energy Carolinas                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Public Utilities, Combined Cycle Plants, in Megawatts | MW   850                                             850
Number of solar plants petition for approval | turbine   2                                       2     2
Retail revenue requirement   $ 154,000,000                                              
Increase in retail rate (percent) | Rate   2.30%                                              
PSCSC                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Public Utilities, Combined Cycle Plants, in Megawatts | MW         1,365                                        
PSCSC | Duke Energy Carolinas                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Estimated cost of generation facilities to be built         $ 3,200,000,000                                        
Public Utilities, Combined Cycle Plants, in Megawatts | MW         1,170                                        
PSCSC | Duke Energy Carolinas | Hurricane Helene                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Storm reserves                                               $ 25,000,000  
Face amount of debt instrument issued                                             $ 561,000,000    
PSCSC | NCEMC                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Public Utilities, Combined Cycle Plants, in Megawatts | MW         100                                        
PSCSC | CEPC                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Public Utilities, Combined Cycle Plants, in Megawatts | MW         95                                        
2023 North Carolina Rate Case | NCUC | Duke Energy Carolinas                                                  
Public Utilities, General Disclosures [Line Items]                                                  
MYRP period (in years)                   3 years                              
Settlement amount                   $ 19,500,000,000                              
Impairment of assets and other charges                             29,000,000                    
Operation, maintenance and other                             8,000,000                    
Approved rate increase (decrease) amount by state commission                               $ 174,000,000   $ 436,000,000              
Approved return on equity (as a percent)                 10.10%                                
2023 North Carolina Rate Case | NCUC | Duke Energy Carolinas | Equity                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Approved return on equity (as a percent)                 53.00%                                
2023 North Carolina Rate Case | NCUC | Duke Energy Carolinas | Forecast                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Approved rate increase (decrease) amount by state commission                     $ 768,000,000   $ 158,000,000                        
2023 North Carolina Rate Case, Retail Allocated | NCUC | Duke Energy Carolinas                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Settlement amount                   $ 4,600,000,000                              
2025 North Carolina Rate Case | NCUC | Duke Energy Carolinas                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Requested return on equity (as a percent)     10.95%                                            
Requested equity ratio (percent)     53.00%                                            
2025 North Carolina Rate Case | NCUC | Duke Energy Carolinas | Forecast                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Requested rate increase (decrease)                       $ 275,000,000   $ 727,000,000           $ 1,000,000,000          
Requested rate increase (decrease), percent                                       15.00%          
2024 South Carolina Rate Case | PSCSC | Duke Energy Carolinas                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Settlement amount           $ 7,400,000,000                                      
Impairment of assets and other charges                             33,000,000                    
Operation, maintenance and other                             2,000,000                    
Approved rate increase (decrease) amount by state commission           $ 150,000,000 $ 240,000,000                                    
Approved return on equity (as a percent)             9.94%                                    
Customer giveback             $ 84,000,000                                    
Approved capital structure (as a percent)             51.21%                                    
Interest expense                             11,000,000                    
Proposed rate period (in years)               2 years                                  
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Carolinas | Natural Disasters and Other Casualty Events                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Storm reserves                             200,000,000           200,000,000        
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Carolinas | North Carolina Storms                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Total noncurrent regulatory liabilities                             136,000,000           136,000,000        
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Progress | Natural Disasters and Other Casualty Events                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Storm reserves                             100,000,000           100,000,000        
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Progress | North Carolina Storms                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Total noncurrent regulatory liabilities                             71,000,000           71,000,000        
Hurricanes Helene, Debby and Milton | PSCSC | Duke Energy Carolinas | Hurricane Helene                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Total noncurrent regulatory liabilities                             $ 35,000,000           $ 35,000,000        
2025 South Carolina Rate Case | PSCSC | Duke Energy Carolinas                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Approved rate increase (decrease) amount by state commission       $ 19,000,000                                          
Approved return on equity (as a percent)       9.99%                                          
Approved capital structure (as a percent)       53.00%                                          
2025 South Carolina Rate Case | PSCSC | Duke Energy Progress | Forecast | Subsequent Event                                                  
Public Utilities, General Disclosures [Line Items]                                                  
Approved rate increase (decrease) amount by state commission $ 40,000,000                                                
Approved return on equity (as a percent) 9.99%                                                
Approved capital structure (as a percent) 53.00%                                                
v3.25.4
Regulatory Matters (Duke Energy Progress Narrative) (Details)
 12 Months Ended 24 Months Ended
Feb. 01, 2026
USD ($)
Nov. 20, 2025
Nov. 11, 2025
USD ($)
Apr. 08, 2025
Feb. 07, 2025
USD ($)
MW
Aug. 18, 2023
USD ($)
Apr. 16, 2023
Oct. 06, 2022
Nov. 19, 2027
USD ($)
Aug. 17, 2027
USD ($)
Nov. 19, 2026
USD ($)
Aug. 17, 2026
USD ($)
Dec. 31, 2025
USD ($)
Aug. 17, 2025
USD ($)
Dec. 31, 2024
USD ($)
Aug. 17, 2024
USD ($)
Dec. 31, 2023
USD ($)
Nov. 19, 2027
USD ($)
Jan. 30, 2026
MW
Nov. 21, 2025
MW
Oct. 30, 2025
MW
Sep. 30, 2025
USD ($)
Mar. 31, 2024
MW
Public Utilities, General Disclosures [Line Items]                                              
Impairment of assets and other charges                         $ (4,000,000)   $ 38,000,000   $ 85,000,000            
Operation, maintenance and other                         6,698,000,000   5,389,000,000   5,625,000,000            
Face amount of debt instrument issued                         7,005,000,000   7,740,000,000                
Total noncurrent regulatory liabilities                         15,682,000,000   14,521,000,000                
Duke Energy Progress                                              
Public Utilities, General Disclosures [Line Items]                                              
Impairment of assets and other charges                         2,000,000   6,000,000   29,000,000            
Operation, maintenance and other                         1,455,000,000   1,388,000,000   1,379,000,000            
Face amount of debt instrument issued                         2,561,000,000   677,000,000                
Total noncurrent regulatory liabilities                         4,807,000,000   4,570,000,000                
Duke Energy Progress | Storm Recovery Bonds                                              
Public Utilities, General Disclosures [Line Items]                                              
Face amount of debt instrument issued                                           $ 461,000,000  
Duke Energy Carolinas                                              
Public Utilities, General Disclosures [Line Items]                                              
Impairment of assets and other charges                         (11,000,000)   31,000,000   44,000,000            
Operation, maintenance and other                         2,002,000,000   1,740,000,000   $ 1,774,000,000            
Face amount of debt instrument issued                         2,243,000,000   1,000,000,000                
Total noncurrent regulatory liabilities                         $ 7,609,000,000   $ 6,592,000,000                
Duke Energy Carolinas | Storm Recovery Bonds                                              
Public Utilities, General Disclosures [Line Items]                                              
Face amount of debt instrument issued                                           $ 582,000,000  
NCUC | Duke Energy Carolinas                                              
Public Utilities, General Disclosures [Line Items]                                              
Public Utilities, Combined Cycle Plants, in Megawatts | MW                                       850     850
PSCSC                                              
Public Utilities, General Disclosures [Line Items]                                              
Public Utilities, Combined Cycle Plants, in Megawatts | MW                                         1,365    
PSCSC | Duke Energy Carolinas                                              
Public Utilities, General Disclosures [Line Items]                                              
Public Utilities, Combined Cycle Plants, in Megawatts | MW                                         1,170    
Nuclear Regulatory Commission                                              
Public Utilities, General Disclosures [Line Items]                                              
Operating license extension (in years)                         20 years                    
2022 North Carolina Rate Case | NCUC | Duke Energy Progress                                              
Public Utilities, General Disclosures [Line Items]                                              
Proposed rate period (in years)             3 years 3 years                              
Approved rate increase (decrease) amount by state commission                           $ 126,000,000   $ 233,000,000              
Settlement amount           $ 12,200,000,000                                  
MYRP period (in years)           3 years                                  
Approved return on equity (as a percent)           9.80%                                  
Impairment of assets and other charges                         $ 28,000,000                    
Operation, maintenance and other                         8,000,000                    
Requested return on equity (as a percent)   10.95%                                          
2022 North Carolina Rate Case | NCUC | Duke Energy Progress | Equity                                              
Public Utilities, General Disclosures [Line Items]                                              
Approved return on equity (as a percent)           53.00%                                  
Requested return on equity (as a percent)   53.00%                                          
2022 North Carolina Rate Case | NCUC | Duke Energy Progress | Forecast                                              
Public Utilities, General Disclosures [Line Items]                                              
Requested rate increase (decrease)                 $ 200,000,000   $ 529,000,000             $ 729,000,000          
Approved rate increase (decrease) amount by state commission                   $ 494,000,000   $ 135,000,000                      
Requested rate increase (decrease), percent                                   15.10%          
2022 North Carolina Rate Case, Retail Allocated | NCUC | Duke Energy Progress                                              
Public Utilities, General Disclosures [Line Items]                                              
Settlement amount           $ 3,500,000,000                                  
Person County Combined Cycle CPCN | NCUC | Duke Energy Progress                                              
Public Utilities, General Disclosures [Line Items]                                              
Requested rate increase (decrease)         $ 113,000,000                                    
Public Utilities, Combined Cycle Plants, in Megawatts | MW         1,360                                    
Requested rate increase (decrease), percent         2.60%                                    
Person County Combined Cycle CPCN | NCUC | Duke Energy Progress | Subsequent Event                                              
Public Utilities, General Disclosures [Line Items]                                              
Public Utilities, Combined Cycle Plants, in Megawatts | MW                                     2,720        
Person County Combined Cycle CPCN | NCUC | NCEMC                                              
Public Utilities, General Disclosures [Line Items]                                              
Public Utilities, Combined Cycle Plants, in Megawatts | MW         225                                    
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Progress | Natural Disasters and Other Casualty Events                                              
Public Utilities, General Disclosures [Line Items]                                              
Storm reserves                         100,000,000                    
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Progress | North Carolina Storms                                              
Public Utilities, General Disclosures [Line Items]                                              
Total noncurrent regulatory liabilities                         71,000,000                    
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Carolinas | Natural Disasters and Other Casualty Events                                              
Public Utilities, General Disclosures [Line Items]                                              
Storm reserves                         200,000,000                    
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Carolinas | North Carolina Storms                                              
Public Utilities, General Disclosures [Line Items]                                              
Total noncurrent regulatory liabilities                         $ 136,000,000                    
2025 South Carolina Rate Case | PSCSC | Duke Energy Progress | Forecast | Subsequent Event                                              
Public Utilities, General Disclosures [Line Items]                                              
Approved rate increase (decrease) amount by state commission $ 40,000,000                                            
Approved return on equity (as a percent) 9.99%                                            
Approved capital structure (as a percent) 53.00%                                            
2025 South Carolina Rate Case | PSCSC | Duke Energy Carolinas                                              
Public Utilities, General Disclosures [Line Items]                                              
Approved rate increase (decrease) amount by state commission     $ 19,000,000                                        
Approved return on equity (as a percent)     9.99%                                        
Approved capital structure (as a percent)     53.00%                                        
Robinson Subsequent License Renewal | Nuclear Regulatory Commission | Duke Energy Progress                                              
Public Utilities, General Disclosures [Line Items]                                              
Operating license extension (in years)       20 years                                      
v3.25.4
Regulatory Matters (Duke Energy Florida Narrative) (Details)
$ in Millions
 12 Months Ended
Jul. 15, 2024
solarFacility
Jul. 01, 2020
USD ($)
plant
MW
Dec. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Jan. 15, 2025
USD ($)
Dec. 27, 2024
USD ($)
Aug. 01, 2024
USD ($)
Jul. 31, 2024
USD ($)
Public Utilities, General Disclosures [Line Items]                    
Other Noncurrent Assets: Regulatory assets       $ 14,379 $ 14,220          
Capital expenditures       14,002 12,263 $ 12,622        
Regulatory assets       1,934 2,739          
Duke Energy Florida                    
Public Utilities, General Disclosures [Line Items]                    
Other Noncurrent Assets: Regulatory assets       2,106 2,064          
Capital expenditures       2,698 2,449 $ 2,529        
Regulatory assets       102 1,022          
Duke Energy Florida | Natural Disasters and Other Casualty Events                    
Public Utilities, General Disclosures [Line Items]                    
Capital expenditures       75            
Regulatory assets       4 $ 936          
Duke Energy Florida | Solar Plant                    
Public Utilities, General Disclosures [Line Items]                    
Estimated cost of generation facilities to be built   $ 1,100                
Duke Energy Florida | FPSC                    
Public Utilities, General Disclosures [Line Items]                    
Number of solar plants petition for approval | plant   10                
Solar generation capacity plants (in MW) | MW   749                
Investment in transmission and distribution             $ 7,000      
Duke Energy Florida | Hurricane Ian | FPSC | Natural Disasters and Other Casualty Events                    
Public Utilities, General Disclosures [Line Items]                    
Storm reserves               $ 1,100 $ 132 $ 63
Duke Energy Florida | 2024 Florida Rate Case | FPSC                    
Public Utilities, General Disclosures [Line Items]                    
Requested rate increase (decrease)       $ (203)            
Number of solar plants petition for approval | solarFacility 12                  
Duke Energy Florida | 2024 Florida Rate Case | FPSC | Forecast                    
Public Utilities, General Disclosures [Line Items]                    
Requested rate increase (decrease)     $ (59)              
Duke Energy Florida | 2024 Florida Rate Case | FPSC | Minimum                    
Public Utilities, General Disclosures [Line Items]                    
Approved return on equity (as a percent) 9.30%                  
Duke Energy Florida | 2024 Florida Rate Case | FPSC | Maximum                    
Public Utilities, General Disclosures [Line Items]                    
Approved return on equity (as a percent) 11.30%                  
Duke Energy Florida | 2024 Florida Rate Case | FPSC | Weighted Average                    
Public Utilities, General Disclosures [Line Items]                    
Approved return on equity (as a percent) 10.30%                  
Approved capital structure (as a percent) 53.00%                  
v3.25.4
Regulatory Matters (Duke Energy Ohio Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended 24 Months Ended
Jan. 03, 2026
Nov. 20, 2025
Oct. 02, 2025
Dec. 02, 2024
May 15, 2024
Oct. 12, 2023
Aug. 18, 2023
Apr. 28, 2023
Nov. 19, 2027
Aug. 17, 2027
Nov. 19, 2026
Aug. 17, 2026
Dec. 31, 2025
Aug. 17, 2025
Dec. 31, 2024
Aug. 17, 2024
Dec. 31, 2023
Nov. 19, 2027
Public Utilities, General Disclosures [Line Items]                                    
Operating Revenues                         $ 32,237   $ 30,357   $ 29,060  
Operation, maintenance and other                         6,698   5,389   5,625  
Income tax expense (benefit)                         (642)   (590)   (438)  
Public utilities, property, plant and equipment, net                         129,959   121,626      
Impairment of assets and other charges                         4   (38)   (85)  
Regulatory assets                         16,313   16,959      
Less: Current portion                         1,271   1,421      
Duke Energy Ohio                                    
Public Utilities, General Disclosures [Line Items]                                    
Operating Revenues                         2,797   2,545   2,507  
Operation, maintenance and other                         490   485   478  
Income tax expense (benefit)                         (68)   (64)   (63)  
Public utilities, property, plant and equipment, net                         10,815   10,244      
Impairment of assets and other charges                         0   0   (3)  
Regulatory assets                         772   793      
Less: Current portion                         57   34      
Duke Energy Ohio | Duke Energy Ohio Gas Base Rate Case | Public Utilities Commission Of Ohio                                    
Public Utilities, General Disclosures [Line Items]                                    
Requested rate increase (decrease)               $ 32                    
Requested return on equity (as a percent)               9.60%                    
Duke Energy Ohio | Duke Energy Ohio Gas Base Rate Case | Public Utilities Commission Of Ohio | Maximum                                    
Public Utilities, General Disclosures [Line Items]                                    
Equity ratio (as a percent)               52.32%                    
Duke Energy Ohio | Duke Energy Kentucky Electric Base Rate Case | KPSC                                    
Public Utilities, General Disclosures [Line Items]                                    
Approved rate increase (decrease) amount by state commission           $ 48                        
Duke Energy Ohio | Duke Energy Kentucky Electric Base Rate Case | KPSC | Maximum                                    
Public Utilities, General Disclosures [Line Items]                                    
Equity ratio (as a percent)           52.145%                        
Duke Energy Ohio | Duke Energy Kentucky Electric Base Rate Case, Electric Base Rates | KPSC                                    
Public Utilities, General Disclosures [Line Items]                                    
Approved return on equity (as a percent)           9.75%                        
Duke Energy Ohio | Duke Energy Kentucky Electric Base Rate Case, Electric Riders | KPSC                                    
Public Utilities, General Disclosures [Line Items]                                    
Approved return on equity (as a percent)           9.65%                        
Duke Energy Ohio | Duke Energy Ohio Energy Security Plan | Public Utilities Commission Of Ohio                                    
Public Utilities, General Disclosures [Line Items]                                    
MYRP period (in years)         3 years                          
Duke Energy Progress                                    
Public Utilities, General Disclosures [Line Items]                                    
Operating Revenues                         7,386   7,017   6,488  
Operation, maintenance and other                         1,455   1,388   1,379  
Income tax expense (benefit)                         (223)   (189)   (149)  
Public utilities, property, plant and equipment, net                         28,195   26,130      
Impairment of assets and other charges                         (2)   (6)   $ (29)  
Regulatory assets                         5,195   5,181      
Less: Current portion                         274   $ 348      
Duke Energy Progress | 2022 North Carolina Rate Case | NCUC                                    
Public Utilities, General Disclosures [Line Items]                                    
Requested return on equity (as a percent)   10.95%                                
Approved rate increase (decrease) amount by state commission                           $ 126   $ 233    
Approved return on equity (as a percent)             9.80%                      
Operation, maintenance and other                         8          
Impairment of assets and other charges                         $ (28)          
MYRP period (in years)             3 years                      
Duke Energy Progress | 2022 North Carolina Rate Case | NCUC | Forecast                                    
Public Utilities, General Disclosures [Line Items]                                    
Requested rate increase (decrease)                 $ 200   $ 529             $ 729
Approved rate increase (decrease) amount by state commission                   $ 494   $ 135            
Duke Energy Progress | 2022 North Carolina Rate Case | NCUC | Equity                                    
Public Utilities, General Disclosures [Line Items]                                    
Requested return on equity (as a percent)   53.00%                                
Approved return on equity (as a percent)             53.00%                      
Duke Energy Kentucky | Duke Energy Kentucky Electric Base Rate Case | Kentucky Public Service Commission (KPSC)                                    
Public Utilities, General Disclosures [Line Items]                                    
Equity ratio (as a percent)     52.73%                              
Duke Energy Kentucky | Duke Energy Kentucky Electric Base Rate Case, Electric Base Rates | Kentucky Public Service Commission (KPSC)                                    
Public Utilities, General Disclosures [Line Items]                                    
Approved return on equity (as a percent)     9.80%                              
Duke Energy Kentucky | Duke Energy Kentucky 2024 Electric Base Rate Case | KPSC                                    
Public Utilities, General Disclosures [Line Items]                                    
Requested rate increase (decrease)       $ 70                            
Duke Energy Kentucky | Duke Energy Kentucky 2025 Natural Gas Base Rate Case | Kentucky Public Service Commission (KPSC)                                    
Public Utilities, General Disclosures [Line Items]                                    
Approved rate increase (decrease) amount by state commission     $ 44                              
Duke Energy Kentucky | Duke Energy Kentucky 2025 Natural Gas Base Rate Case | Kentucky Public Service Commission (KPSC) | Forecast | Subsequent Event                                    
Public Utilities, General Disclosures [Line Items]                                    
Approved rate increase (decrease) amount by state commission $ 22                                  
Approved return on equity (as a percent) 9.80%                                  
Equity ratio (as a percent) 52.649%                                  
Duke Energy Kentucky | Duke Energy Kentucky 2025 Natural Gas Base Rate Case, Riders | Kentucky Public Service Commission (KPSC) | Forecast | Subsequent Event                                    
Public Utilities, General Disclosures [Line Items]                                    
Approved return on equity (as a percent) 9.70%                                  
v3.25.4
Regulatory Matters (Duke Energy Indiana Narrative) (Details)
 1 Months Ended 12 Months Ended
Nov. 25, 2025
Feb. 13, 2025
USD ($)
MW
Jan. 29, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Apr. 04, 2024
USD ($)
Sep. 20, 2023
Jun. 15, 2022
USD ($)
Public Utilities, General Disclosures [Line Items]                    
Impairment of assets and other charges         $ (4,000,000) $ 38,000,000 $ 85,000,000      
Operating Revenues         32,237,000,000 30,357,000,000 29,060,000,000      
Duke Energy Indiana                    
Public Utilities, General Disclosures [Line Items]                    
Impairment of assets and other charges             0      
Operating Revenues         $ 3,544,000,000 $ 3,040,000,000 $ 3,399,000,000      
Duke Energy Indiana | Indiana Coal Ash Recovery | Indiana Utility Regulatory Commission                    
Public Utilities, General Disclosures [Line Items]                    
Simple interest of refunds (as a percent)                 4.71%  
Duke Energy Indiana | TDSIG 2.0 | Indiana Utility Regulatory Commission                    
Public Utilities, General Disclosures [Line Items]                    
Future investments in new cost                   $ 2,000,000,000
Duke Energy Indiana | 2024 Indiana Rate Case | Indiana Utility Regulatory Commission                    
Public Utilities, General Disclosures [Line Items]                    
Requested rate increase (decrease), amended, amount     $ 385,000,000              
Approved rate increase (decrease) amount by state commission     $ 296,000,000              
Approved return on equity (as a percent)     9.75%              
Future investments in new cost               $ 1,600,000,000    
Equity ratio (as a percent)     53.00%              
Accumulated other comprehensive loss (income)       $ 29,000,000            
Duke Energy Indiana | Cayuga Combined Cycle CPCN | Indiana Utility Regulatory Commission                    
Public Utilities, General Disclosures [Line Items]                    
Requested rate increase (decrease), net of tax (as a percent) 5.60%                  
Winter rating, combustion turbines | MW   471                
Estimated cost of generation facilities to be built   $ 3,300,000,000                
Duke Energy Indiana | Cayuga Combined Cycle CPCN, Gas-Fired | Indiana Utility Regulatory Commission                    
Public Utilities, General Disclosures [Line Items]                    
Winter rating, combustion turbines | MW   1,476                
Duke Energy Indiana | Cayuga Combined Cycle CPCN, Coal-Fired | Indiana Utility Regulatory Commission                    
Public Utilities, General Disclosures [Line Items]                    
Winter rating, combustion turbines | MW   1,005                
v3.25.4
Regulatory Matters (Piedmont Narrative) (Details) - Piedmont - 2024 North Carolina Rate Case - NCUC
$ in Millions
Sep. 13, 2024
USD ($)
Public Utilities, General Disclosures [Line Items]  
Increase in net annual retail revenues in the first year $ 88
Increase in net annual retail revenue after the first year $ 10
Requested return on equity (as a percent) 9.80%
Equity ratio (as a percent) 52.30%
v3.25.4
Regulatory Matters - Total Storm Restoration Costs Across Subsidiary Registrants (Details) - Hurricanes Helene, Debby and Milton
$ in Millions
 24 Months Ended
Dec. 31, 2025
USD ($)
Duke Energy Carolinas  
Public Utilities, General Disclosures [Line Items]  
Estimated storm restoration costs $ 474
Duke Energy Progress  
Public Utilities, General Disclosures [Line Items]  
Estimated storm restoration costs $ 288
v3.25.4
Regulatory Matters (Schedule of Net Carrying Value Of Facilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Public Utilities, General Disclosures [Line Items]    
Remaining net book value $ 129,959 $ 121,626
Duke Energy Carolinas    
Public Utilities, General Disclosures [Line Items]    
Remaining net book value 41,855 39,292
Duke Energy Progress    
Public Utilities, General Disclosures [Line Items]    
Remaining net book value 28,195 26,130
Duke Energy Florida    
Public Utilities, General Disclosures [Line Items]    
Remaining net book value 24,723 22,840
Duke Energy Indiana    
Public Utilities, General Disclosures [Line Items]    
Remaining net book value $ 13,749 $ 13,122
v3.25.4
Commitments and Contingencies (Narrative) (Details)
$ in Millions
 12 Months Ended
Dec. 20, 2024
plaintiff
Dec. 31, 2025
USD ($)
reactor
Dec. 31, 2024
USD ($)
Loss Contingencies [Line Items]      
Number of licensed nuclear reactors | reactor   95  
Insured public liability limit per nuclear incident   $ 16,300.0  
Excess nuclear liability program coverage   15,800.0  
Pro rata assessment for each reactor owned for each incident exceeding public liability insurance   166.0  
Annual payment limit to pro rata assessments   24.7  
Industry aggregate limit   3,200.0  
Sublimit for non-nuclear terrorist events   1,800.0  
Sublimit property damage losses   1,500.0  
Additional nuclear accident limit   $ 1,250.0  
Insurance coverage percentage initial weeks (as a percent)   100.00%  
Insurance coverage percentage additional weeks (as a percent)   80.00%  
Insurance coverage period remaining (percent)   60.00%  
Accidental outage insurance coverage policy limit   $ 490.0  
Sublimit accidental outage recovery   $ 291.0  
Maximum magnitude of retroactive premiums   10  
Maximum period for retroactive premium assessment (in years)   6 years  
Maximum | Pipeline and storage capacity contracts      
Loss Contingencies [Line Items]      
Long-term purchase commitment term (in years)   17 years  
Maximum | Natural gas supply contracts fixed payment      
Loss Contingencies [Line Items]      
Long-term purchase commitment term (in years)   10 years  
Maximum | Natural gas supply purchase commitments      
Loss Contingencies [Line Items]      
Long-term purchase commitment term (in years)   5 years  
Mooresville Coal Ash Class Action Litigation      
Loss Contingencies [Line Items]      
Number of plaintiffs | plaintiff 15    
Duke Energy Carolinas      
Loss Contingencies [Line Items]      
Primary nuclear liability program coverage   $ 500.0  
Max retroactive premium assessments   170.0  
Duke Energy Carolinas | Asbestos Issue      
Loss Contingencies [Line Items]      
Asbestos-related injuries and damages reserves   395.0 $ 396.0
Loss contingency, receivable, noncurrent   555.0 539.0
Duke Energy Progress      
Loss Contingencies [Line Items]      
Primary nuclear liability program coverage   500.0  
Max retroactive premium assessments   102.0  
Duke Energy Florida      
Loss Contingencies [Line Items]      
Primary nuclear liability program coverage   100.0  
Max retroactive premium assessments   1.0  
Duke Energy and Duke Energy Carolinas | ASU 2016-13      
Loss Contingencies [Line Items]      
Premium receivable, allowance for credit loss   $ 9.0 $ 9.0
Catawba | Duke Energy Carolinas      
Loss Contingencies [Line Items]      
Number of licensed nuclear reactors | reactor   2  
Dedicated additional nuclear accident limit   $ 1,250.0  
Additional Non-nuclear accident limit   $ 750.0  
Potential obligation percentage (as a percent)   100.00%  
McGuire | Duke Energy Carolinas      
Loss Contingencies [Line Items]      
Number of licensed nuclear reactors | reactor   2  
Oconee | Duke Energy Carolinas      
Loss Contingencies [Line Items]      
Number of licensed nuclear reactors | reactor   3  
Additional Non-nuclear accident limit   $ 750.0  
Harris | Duke Energy Progress      
Loss Contingencies [Line Items]      
Number of licensed nuclear reactors | reactor   1  
Robinson | Duke Energy Progress      
Loss Contingencies [Line Items]      
Number of licensed nuclear reactors | reactor   1  
Brunswick | Duke Energy Progress      
Loss Contingencies [Line Items]      
Number of licensed nuclear reactors | reactor   2  
Crystal River Unit 3 | Duke Energy Florida      
Loss Contingencies [Line Items]      
Sublimit property damage losses   $ 50.0  
v3.25.4
Commitments and Contingencies (Schedule of Environmental Loss Contingencies) (Details) - Environmental reserves - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Loss Contingencies [Line Items]    
Reserves for Environmental Remediation $ 72 $ 68
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Other Other
Duke Energy Carolinas    
Loss Contingencies [Line Items]    
Reserves for Environmental Remediation $ 36 $ 24
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Other Other
Progress Energy    
Loss Contingencies [Line Items]    
Reserves for Environmental Remediation $ 20 $ 19
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Other Other
Duke Energy Progress    
Loss Contingencies [Line Items]    
Reserves for Environmental Remediation $ 10 $ 9
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Other Other
Duke Energy Florida    
Loss Contingencies [Line Items]    
Reserves for Environmental Remediation $ 10 $ 10
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Other Other
Duke Energy Ohio    
Loss Contingencies [Line Items]    
Reserves for Environmental Remediation $ 12 $ 21
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Other Other
Duke Energy Indiana    
Loss Contingencies [Line Items]    
Reserves for Environmental Remediation $ 2 $ 2
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Other Other
Piedmont    
Loss Contingencies [Line Items]    
Reserves for Environmental Remediation $ 2 $ 2
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Other Other
v3.25.4
Commitments and Contingencies (Purchased Power) (Details) - Purchased Power Contracts
$ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
Duke Energy Progress  
Unconditional Purchase Obligations [Abstract]  
2026 $ 18
2027 18
2028 18
2029 2
2030 3
Thereafter 29
Total $ 88
Duke Energy Progress | Minimum  
Unconditional Purchase Obligations [Abstract]  
Net plant output (as a percent) 18.00%
Duke Energy Progress | Maximum  
Unconditional Purchase Obligations [Abstract]  
Net plant output (as a percent) 100.00%
Duke Energy Ohio  
Unconditional Purchase Obligations [Abstract]  
2026 $ 191
2027 125
Total 316
Duke Energy Indiana  
Unconditional Purchase Obligations [Abstract]  
2026 73
2027 7
Total $ 80
v3.25.4
Commitments and Contingencies (Gas Supply Contracts) (Details) - Natural Gas Supply and Capacity Contracts
$ in Millions
Dec. 31, 2025
USD ($)
Duke Energy Ohio  
Long-term Purchase Commitment [Line Items]  
2026 $ 133
2027 136
2028 135
2029 131
2030 118
Thereafter 828
Total 1,481
Piedmont  
Long-term Purchase Commitment [Line Items]  
2026 414
2027 400
2028 335
2029 265
2030 262
Thereafter 605
Total $ 2,281
v3.25.4
Leases (Narrative) (Details) - Construction and transportation of natural gas pipelines - Piedmont - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Lessee, Lease, Description [Line Items]    
Net investment in lease, current $ 3 $ 2
Net investment in lease, noncurrent $ 194 $ 197
v3.25.4
Leases (Lease Costs) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Lessee, Lease, Description [Line Items]    
Operating lease expense $ 283 $ 275
Short-term lease expense 6 7
Variable lease expense 39 33
Finance lease expense    
Amortization of leased assets 64 113
Interest on lease liabilities 40 41
Total finance lease expense 104 154
Total lease expense 432 469
Duke Energy Carolinas    
Lessee, Lease, Description [Line Items]    
Operating lease expense 60 66
Variable lease expense 2 2
Finance lease expense    
Amortization of leased assets 12 7
Interest on lease liabilities 30 31
Total finance lease expense 42 38
Total lease expense 104 106
Progress Energy    
Lessee, Lease, Description [Line Items]    
Operating lease expense 181 173
Short-term lease expense 3 3
Variable lease expense 35 29
Finance lease expense    
Amortization of leased assets 53 46
Interest on lease liabilities 43 44
Total finance lease expense 96 90
Total lease expense 315 295
Duke Energy Progress    
Lessee, Lease, Description [Line Items]    
Operating lease expense 91 82
Short-term lease expense   1
Variable lease expense 26 19
Finance lease expense    
Amortization of leased assets 43 38
Interest on lease liabilities 39 41
Total finance lease expense 82 79
Total lease expense 199 181
Duke Energy Florida    
Lessee, Lease, Description [Line Items]    
Operating lease expense 90 91
Short-term lease expense 3 2
Variable lease expense 9 10
Finance lease expense    
Amortization of leased assets 10 8
Interest on lease liabilities 4 3
Total finance lease expense 14 11
Total lease expense 116 114
Duke Energy Ohio    
Lessee, Lease, Description [Line Items]    
Operating lease expense 14 12
Finance lease expense    
Total lease expense 14 12
Duke Energy Indiana    
Lessee, Lease, Description [Line Items]    
Operating lease expense 27 23
Short-term lease expense 1 1
Variable lease expense 1 1
Finance lease expense    
Amortization of leased assets 2  
Interest on lease liabilities 1 1
Total finance lease expense 3 1
Total lease expense 32 26
Piedmont    
Lessee, Lease, Description [Line Items]    
Operating lease expense 1 2
Variable lease expense 1 1
Finance lease expense    
Total lease expense $ 2 $ 3
v3.25.4
Leases (Operating Lease Maturities) (Details)
$ in Millions
Dec. 31, 2025
USD ($)
Lessee, Operating Lease, Liability, Payment, Due  
2026 $ 289
2027 239
2028 200
2029 171
2030 136
Thereafter 539
Total operating lease payments 1,574
Less: Present value discount (303)
Total operating lease liabilities 1,271
Duke Energy Carolinas  
Lessee, Operating Lease, Liability, Payment, Due  
2026 24
2027 18
2028 15
2029 12
2030 9
Thereafter 44
Total operating lease payments 122
Less: Present value discount (23)
Total operating lease liabilities 99
Progress Energy  
Lessee, Operating Lease, Liability, Payment, Due  
2026 126
2027 98
2028 83
2029 81
2030 73
Thereafter 368
Total operating lease payments 829
Less: Present value discount (177)
Total operating lease liabilities 652
Duke Energy Progress  
Lessee, Operating Lease, Liability, Payment, Due  
2026 61
2027 61
2028 60
2029 59
2030 59
Thereafter 231
Total operating lease payments 531
Less: Present value discount (104)
Total operating lease liabilities 427
Duke Energy Florida  
Lessee, Operating Lease, Liability, Payment, Due  
2026 65
2027 37
2028 23
2029 22
2030 14
Thereafter 137
Total operating lease payments 298
Less: Present value discount (73)
Total operating lease liabilities 225
Duke Energy Ohio  
Lessee, Operating Lease, Liability, Payment, Due  
2026 1
2027 1
2028 1
2029 0
2030 0
Thereafter 3
Total operating lease payments 6
Less: Present value discount (1)
Total operating lease liabilities 5
Duke Energy Indiana  
Lessee, Operating Lease, Liability, Payment, Due  
2026 7
2027 6
2028 4
2029 4
2030 3
Thereafter 17
Total operating lease payments 41
Less: Present value discount (7)
Total operating lease liabilities 34
Piedmont  
Lessee, Operating Lease, Liability, Payment, Due  
2026 1
2027 1
2028 1
2029 0
2030 0
Thereafter 0
Total operating lease payments 3
Less: Present value discount 0
Total operating lease liabilities $ 3
v3.25.4
Leases (Finance Lease Maturities) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Finance Lease, Liability, Payment, Due    
2026 $ 95  
2027 88  
2028 84  
2029 81  
2030 82  
Thereafter 497  
Total finance lease payments 927  
Less: Amounts representing interest (351)  
Total finance lease liabilities 576 $ 570
Duke Energy Carolinas    
Finance Lease, Liability, Payment, Due    
2026 40  
2027 40  
2028 39  
2029 38  
2030 39  
Thereafter 319  
Total finance lease payments 515  
Less: Amounts representing interest (243)  
Total finance lease liabilities 272 270
Progress Energy    
Finance Lease, Liability, Payment, Due    
2026 94  
2027 91  
2028 90  
2029 90  
2030 90  
Thereafter 437  
Total finance lease payments 892  
Less: Amounts representing interest (323)  
Total finance lease liabilities 569 581
Duke Energy Progress    
Finance Lease, Liability, Payment, Due    
2026 81  
2027 82  
2028 82  
2029 82  
2030 82  
Thereafter 323  
Total finance lease payments 732  
Less: Amounts representing interest (251)  
Total finance lease liabilities 481 515
Duke Energy Florida    
Finance Lease, Liability, Payment, Due    
2026 13  
2027 9  
2028 8  
2029 8  
2030 8  
Thereafter 114  
Total finance lease payments 160  
Less: Amounts representing interest (72)  
Total finance lease liabilities 88 66
Duke Energy Indiana    
Finance Lease, Liability, Payment, Due    
2026 2  
2027 2  
2028 1  
2029 1  
2030 1  
Thereafter 18  
Total finance lease payments 25  
Less: Amounts representing interest (15)  
Total finance lease liabilities $ 10 $ 10
v3.25.4
Leases (Supplemental Financial Information) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Assets    
Operating lease right-of-use assets, net $ 1,241 $ 1,148
Net property, plant and equipment 654 645
Total lease assets 1,895 1,793
Current    
Operating 238 208
Finance 55 46
Noncurrent    
Operating 1,033 957
Finance 521 524
Total lease liabilities 1,847 1,735
Cash paid for amounts included in the measurement of lease liabilities    
Operating cash flows from operating leases 277 250
Operating cash flows from finance leases 40 41
Financing cash flows from finance leases 64 113
Lease assets obtained in exchange for new lease liabilities (non-cash)    
Operating 348 322
Finance $ 72 $ 81
Weighted average remaining lease term (years)    
Operating leases 8 years 8 years
Finance leases 12 years 11 years
Weighted-average discount rate (as a percent)    
Operating leases 4.50% 4.30%
Finance leases 8.20% 8.40%
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Public utilities, property, plant and equipment, net Public utilities, property, plant and equipment, net
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Current Liabilities: Other Current Liabilities: Other
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Current maturities of long-term debt Current maturities of long-term debt
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Operating lease liabilities Operating lease liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Long-Term Debt Long-Term Debt
Duke Energy Carolinas    
Assets    
Operating lease right-of-use assets, net $ 91 $ 98
Net property, plant and equipment 251 252
Total lease assets 342 350
Current    
Operating 20 20
Finance 11 8
Noncurrent    
Operating 79 87
Finance 261 262
Total lease liabilities 371 377
Cash paid for amounts included in the measurement of lease liabilities    
Operating cash flows from operating leases 24 24
Operating cash flows from finance leases 30 31
Financing cash flows from finance leases 12 7
Lease assets obtained in exchange for new lease liabilities (non-cash)    
Operating 4 50
Finance $ 15 $ 1
Weighted average remaining lease term (years)    
Operating leases 9 years 9 years
Finance leases 14 years 15 years
Weighted-average discount rate (as a percent)    
Operating leases 4.40% 4.30%
Finance leases 11.30% 11.50%
Progress Energy    
Assets    
Operating lease right-of-use assets, net $ 607 $ 625
Net property, plant and equipment 605 620
Total lease assets 1,212 1,245
Current    
Operating 100 97
Finance 53 48
Noncurrent    
Operating 552 557
Finance 516 533
Total lease liabilities 1,221 1,235
Cash paid for amounts included in the measurement of lease liabilities    
Operating cash flows from operating leases 122 122
Operating cash flows from finance leases 43 44
Financing cash flows from finance leases 53 46
Lease assets obtained in exchange for new lease liabilities (non-cash)    
Operating 6 43
Finance $ 40 $ 55
Weighted average remaining lease term (years)    
Operating leases 10 years 9 years
Finance leases 11 years 11 years
Weighted-average discount rate (as a percent)    
Operating leases 4.40% 4.00%
Finance leases 8.60% 8.90%
Duke Energy Progress    
Assets    
Operating lease right-of-use assets, net $ 386 $ 348
Net property, plant and equipment 478 512
Total lease assets 864 860
Current    
Operating 43 42
Finance 45 41
Noncurrent    
Operating 384 332
Finance 436 474
Total lease liabilities 908 889
Cash paid for amounts included in the measurement of lease liabilities    
Operating cash flows from operating leases 56 57
Operating cash flows from finance leases 39 41
Financing cash flows from finance leases 43 38
Lease assets obtained in exchange for new lease liabilities (non-cash)    
Operating 6 $ 3
Finance $ 9  
Weighted average remaining lease term (years)    
Operating leases 9 years 8 years
Finance leases 10 years 10 years
Weighted-average discount rate (as a percent)    
Operating leases 4.40% 3.90%
Finance leases 9.20% 9.20%
Duke Energy Florida    
Assets    
Operating lease right-of-use assets, net $ 221 $ 277
Net property, plant and equipment 127 108
Total lease assets 348 385
Current    
Operating 57 55
Finance 8 7
Noncurrent    
Operating 168 225
Finance 80 59
Total lease liabilities 313 346
Cash paid for amounts included in the measurement of lease liabilities    
Operating cash flows from operating leases 66 65
Operating cash flows from finance leases 4 3
Financing cash flows from finance leases 10 8
Lease assets obtained in exchange for new lease liabilities (non-cash)    
Operating   40
Finance $ 31 $ 55
Weighted average remaining lease term (years)    
Operating leases 12 years 11 years
Finance leases 21 years 15 years
Weighted-average discount rate (as a percent)    
Operating leases 4.30% 4.20%
Finance leases 5.80% 5.90%
Duke Energy Ohio    
Assets    
Operating lease right-of-use assets, net $ 5 $ 6
Total lease assets 5 6
Current    
Operating   1
Noncurrent    
Operating 5 6
Total lease liabilities 5 7
Cash paid for amounts included in the measurement of lease liabilities    
Operating cash flows from operating leases $ 1 $ 1
Weighted average remaining lease term (years)    
Operating leases 11 years 11 years
Finance leases 0 years 0 years
Weighted-average discount rate (as a percent)    
Operating leases 4.20% 4.10%
Duke Energy Indiana    
Assets    
Operating lease right-of-use assets, net $ 32 $ 37
Net property, plant and equipment 8 6
Total lease assets 40 43
Current    
Operating 6 6
Noncurrent    
Operating 28 33
Finance 10 10
Total lease liabilities 44 49
Cash paid for amounts included in the measurement of lease liabilities    
Operating cash flows from operating leases 8 8
Operating cash flows from finance leases 1 1
Financing cash flows from finance leases 2  
Lease assets obtained in exchange for new lease liabilities (non-cash)    
Operating 1 7
Finance $ 2 $ 1
Weighted average remaining lease term (years)    
Operating leases 9 years 11 years
Finance leases 19 years 20 years
Weighted-average discount rate (as a percent)    
Operating leases 3.90% 4.00%
Finance leases 11.60% 11.70%
Piedmont    
Assets    
Operating lease right-of-use assets, net $ 2 $ 4
Total lease assets 2 4
Current    
Operating 1 1
Noncurrent    
Operating 2 7
Total lease liabilities 3 8
Cash paid for amounts included in the measurement of lease liabilities    
Operating cash flows from operating leases $ 1 1
Lease assets obtained in exchange for new lease liabilities (non-cash)    
Operating   $ 3
Weighted average remaining lease term (years)    
Operating leases 3 years 4 years
Finance leases 0 years 0 years
Weighted-average discount rate (as a percent)    
Operating leases 4.00% 3.90%
v3.25.4
Debt and Credit Facilities (Summary of Debt and Related Terms) (Details) - USD ($)
 1 Months Ended 12 Months Ended
Dec. 31, 2025
Oct. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Debt Instrument [Line Items]              
Weighted Average Interest Rate (as a percent) 4.41%         4.41% 4.37%
Unsecured Debt $ 35,585,000,000         $ 35,585,000,000 $ 34,283,000,000
Secured Debt 4,279,000,000         4,279,000,000 3,672,000,000
First mortgage bonds 44,289,000,000         44,289,000,000 39,842,000,000
Finance leases 576,000,000         576,000,000 570,000,000
Tax exempt bonds 1,331,000,000         1,331,000,000 1,331,000,000
Notes payable and commercial paper 3,254,000,000         3,254,000,000 4,213,000,000
Fair value hedge carrying value adjustment 176,000,000         176,000,000 (82,000,000)
Unamortized debt discount and premium, net 762,000,000         762,000,000 845,000,000
Unamortized debt issuance costs (416,000,000)         (416,000,000) (401,000,000)
Total debt 89,836,000,000         89,836,000,000 84,273,000,000
Short-term notes payable and commercial paper (2,624,000,000)         (2,624,000,000) (3,584,000,000)
Current maturities of long-term debt (7,104,000,000)         (7,104,000,000) (4,349,000,000)
Total long-term debt 80,108,000,000         80,108,000,000 76,340,000,000
Short term obligations classified as long-term debt 937,000,000         937,000,000 937,000,000
Repayments of debt 500,000,000 $ 95,000,000 $ 650,000,000 $ 150,000,000      
Face amount of debt instrument issued $ 7,005,000,000         $ 7,005,000,000 $ 7,740,000,000
Unsecured Debt              
Debt Instrument [Line Items]              
Weighted Average Interest Rate (as a percent) 4.63%         4.63% 4.53%
Secured Debt              
Debt Instrument [Line Items]              
Weighted Average Interest Rate (as a percent) 3.85%         3.85% 3.75%
First Mortgage Bonds              
Debt Instrument [Line Items]              
Weighted Average Interest Rate (as a percent) 4.33%         4.33% 4.24%
Finance Leases              
Debt Instrument [Line Items]              
Weighted Average Interest Rate (as a percent)            
Tax-exempt bonds              
Debt Instrument [Line Items]              
Weighted Average Interest Rate (as a percent) 3.54%         3.54% 3.85%
Short term obligations classified as long-term debt $ 312,000,000         $ 312,000,000 $ 312,000,000
Notes Payable And Commercial Paper              
Debt Instrument [Line Items]              
Weighted Average Interest Rate (as a percent) 3.95%         3.95% 4.67%
Short term obligations classified as long-term debt $ 625,000,000         $ 625,000,000 $ 625,000,000
Weighted average days to maturity (in days)           21 days 13 days
Purchase Accounting Adjustments | Parent Company              
Debt Instrument [Line Items]              
Unamortized debt issuance costs 21,000,000         $ 21,000,000 $ 23,000,000
Purchase Accounting Adjustments | Progress Energy              
Debt Instrument [Line Items]              
Unamortized debt discount and premium, net 855,000,000         855,000,000 925,000,000
Purchase Accounting Adjustments | Piedmont              
Debt Instrument [Line Items]              
Unamortized debt discount and premium, net 45,000,000         45,000,000 56,000,000
Maturities Due March 2024              
Debt Instrument [Line Items]              
Repayments of debt         $ 1,000,000,000    
Duke Energy Carolinas              
Debt Instrument [Line Items]              
Unsecured Debt 1,150,000,000         1,150,000,000 1,605,000,000
Secured Debt 2,115,000,000         2,115,000,000 1,463,000,000
First mortgage bonds 15,053,000,000         15,053,000,000 13,955,000,000
Finance leases 272,000,000         272,000,000 270,000,000
Unamortized debt discount and premium, net (20,000,000)         (20,000,000) (20,000,000)
Unamortized debt issuance costs (93,000,000)         (93,000,000) (83,000,000)
Total debt 18,777,000,000         18,777,000,000 17,490,000,000
Current maturities of long-term debt (629,000,000)         (629,000,000) (521,000,000)
Total long-term debt 18,148,000,000         18,148,000,000 16,969,000,000
Short term obligations classified as long-term debt 300,000,000         300,000,000 300,000,000
Face amount of debt instrument issued 2,243,000,000         2,243,000,000 1,000,000,000
Duke Energy Carolinas | Related Party              
Debt Instrument [Line Items]              
Money pool/intercompany borrowings 300,000,000         300,000,000 300,000,000
Duke Energy Carolinas | Tax-exempt bonds              
Debt Instrument [Line Items]              
Short term obligations classified as long-term debt             0
Progress Energy              
Debt Instrument [Line Items]              
Unsecured Debt 1,800,000,000         1,800,000,000 2,085,000,000
Secured Debt 2,109,000,000         2,109,000,000 2,147,000,000
First mortgage bonds 21,923,000,000         21,923,000,000 19,223,000,000
Finance leases 569,000,000         569,000,000 581,000,000
Tax exempt bonds 500,000,000         500,000,000 500,000,000
Unamortized debt discount and premium, net (44,000,000)         (44,000,000) (44,000,000)
Unamortized debt issuance costs (159,000,000)         (159,000,000) (146,000,000)
Total debt 26,848,000,000         26,848,000,000 25,573,000,000
Current maturities of long-term debt (722,000,000)         (722,000,000) (1,517,000,000)
Total long-term debt 26,126,000,000         26,126,000,000 22,979,000,000
Progress Energy | Related Party              
Debt Instrument [Line Items]              
Money pool/intercompany borrowings 150,000,000         150,000,000 1,227,000,000
Short-term money pool/intercompany borrowings             1,077,000,000
Duke Energy Progress              
Debt Instrument [Line Items]              
Unsecured Debt             185,000,000
Secured Debt 1,290,000,000         1,290,000,000 1,269,000,000
First mortgage bonds 11,576,000,000         11,576,000,000 9,974,000,000
Finance leases 481,000,000         481,000,000 515,000,000
Tax exempt bonds 500,000,000         500,000,000 500,000,000
Unamortized debt discount and premium, net (25,000,000)         (25,000,000) (24,000,000)
Unamortized debt issuance costs (76,000,000)         (76,000,000) (65,000,000)
Total debt 13,896,000,000         13,896,000,000 13,115,000,000
Current maturities of long-term debt (285,000,000)         (285,000,000) (983,000,000)
Total long-term debt 13,611,000,000         13,611,000,000 11,521,000,000
Short term obligations classified as long-term debt 150,000,000         150,000,000 150,000,000
Face amount of debt instrument issued 2,561,000,000         2,561,000,000 677,000,000
Duke Energy Progress | Related Party              
Debt Instrument [Line Items]              
Money pool/intercompany borrowings 150,000,000         150,000,000 761,000,000
Short-term money pool/intercompany borrowings             611,000,000
Duke Energy Progress | Tax-exempt bonds              
Debt Instrument [Line Items]              
Short term obligations classified as long-term debt             0
Duke Energy Florida              
Debt Instrument [Line Items]              
Unsecured Debt 150,000,000         150,000,000 250,000,000
Secured Debt 818,000,000         818,000,000 879,000,000
First mortgage bonds 10,349,000,000         10,349,000,000 9,247,000,000
Finance leases 88,000,000         88,000,000 66,000,000
Unamortized debt discount and premium, net (19,000,000)         (19,000,000) (19,000,000)
Unamortized debt issuance costs (79,000,000)         (79,000,000) (76,000,000)
Total debt 11,307,000,000         11,307,000,000 10,814,000,000
Current maturities of long-term debt (437,000,000)         (437,000,000) (534,000,000)
Total long-term debt 10,870,000,000         10,870,000,000 9,814,000,000
Face amount of debt instrument issued 1,100,000,000         1,100,000,000 173,000,000
Duke Energy Florida | Related Party              
Debt Instrument [Line Items]              
Money pool/intercompany borrowings             467,000,000
Short-term money pool/intercompany borrowings             466,000,000
Duke Energy Ohio              
Debt Instrument [Line Items]              
Unsecured Debt 1,285,000,000         1,285,000,000 1,380,000,000
First mortgage bonds 3,075,000,000         3,075,000,000 2,722,000,000
Tax exempt bonds 77,000,000         77,000,000 77,000,000
Unamortized debt discount and premium, net (22,000,000)         (22,000,000) (23,000,000)
Unamortized debt issuance costs (20,000,000)         (20,000,000) (18,000,000)
Total debt 4,433,000,000         4,433,000,000 4,327,000,000
Current maturities of long-term debt (45,000,000)         (45,000,000) (245,000,000)
Total long-term debt 4,375,000,000         4,375,000,000 3,920,000,000
Short term obligations classified as long-term debt 52,000,000         52,000,000 52,000,000
Face amount of debt instrument issued 501,000,000         501,000,000 650,000,000
Duke Energy Ohio | Related Party              
Debt Instrument [Line Items]              
Money pool/intercompany borrowings 38,000,000         38,000,000 189,000,000
Short-term money pool/intercompany borrowings 13,000,000         13,000,000 162,000,000
Duke Energy Ohio | Tax-exempt bonds              
Debt Instrument [Line Items]              
Short term obligations classified as long-term debt 27,000,000         27,000,000 27,000,000
Duke Energy Indiana              
Debt Instrument [Line Items]              
Unsecured Debt 386,000,000         386,000,000 390,000,000
First mortgage bonds 4,238,000,000         4,238,000,000 3,937,000,000
Finance leases 10,000,000         10,000,000 10,000,000
Tax exempt bonds 352,000,000         352,000,000 352,000,000
Unamortized debt discount and premium, net (16,000,000)         (16,000,000) (16,000,000)
Unamortized debt issuance costs (27,000,000)         (27,000,000) (25,000,000)
Total debt 5,268,000,000         5,268,000,000 4,808,000,000
Current maturities of long-term debt (4,000,000)         (4,000,000) (4,000,000)
Total long-term debt 5,089,000,000         5,089,000,000 4,794,000,000
Short term obligations classified as long-term debt 435,000,000         435,000,000 435,000,000
Face amount of debt instrument issued 300,000,000         300,000,000 300,000,000
Duke Energy Indiana | Related Party              
Debt Instrument [Line Items]              
Money pool/intercompany borrowings 325,000,000         325,000,000 160,000,000
Short-term money pool/intercompany borrowings 175,000,000         175,000,000 10,000,000
Duke Energy Indiana | Tax-exempt bonds              
Debt Instrument [Line Items]              
Short term obligations classified as long-term debt 285,000,000         285,000,000 285,000,000
Piedmont              
Debt Instrument [Line Items]              
Unsecured Debt 4,275,000,000         4,275,000,000 4,030,000,000
Unamortized debt discount and premium, net (7,000,000)         (7,000,000) (8,000,000)
Unamortized debt issuance costs (17,000,000)         (17,000,000) (19,000,000)
Total debt 4,860,000,000         4,860,000,000 4,742,000,000
Current maturities of long-term debt (490,000,000)         (490,000,000) (205,000,000)
Total long-term debt 3,761,000,000         3,761,000,000 3,798,000,000
Face amount of debt instrument issued             375,000,000
Piedmont | Related Party              
Debt Instrument [Line Items]              
Money pool/intercompany borrowings 609,000,000         609,000,000 739,000,000
Short-term money pool/intercompany borrowings $ 609,000,000         $ 609,000,000 $ 739,000,000
v3.25.4
Debt and Credit Facilities (Summary of Current Maturities of Long-term Debt) (Details) - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Jan. 31, 2026
Dec. 31, 2025
Oct. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Debt Instrument [Line Items]              
Current maturities of long-term debt   $ 7,104       $ 7,104 $ 4,349
Repayments of debt   500 $ 95 $ 650 $ 150    
Subsequent Event              
Debt Instrument [Line Items]              
Repayments of debt $ 45            
Piedmont              
Debt Instrument [Line Items]              
Current maturities of long-term debt   490       490 205
Duke Energy Florida              
Debt Instrument [Line Items]              
Current maturities of long-term debt   437       437 534
Duke Energy Progress              
Debt Instrument [Line Items]              
Current maturities of long-term debt   285       285 983
Duke Energy Carolinas              
Debt Instrument [Line Items]              
Current maturities of long-term debt   $ 629       $ 629 $ 521
Unsecured Debt | Parent | Convertible Senior Notes Due April 2026              
Debt Instrument [Line Items]              
Interest rate (as a percent)   4.125%       4.125%  
Current maturities of long-term debt   $ 1,725       $ 1,725  
Unsecured Debt | Parent | Unsecured Debt Maturing September 2026              
Debt Instrument [Line Items]              
Interest rate (as a percent)   2.65%       2.65%  
Current maturities of long-term debt   $ 1,500       $ 1,500  
Unsecured Debt | Parent | Term Loan Facility Maturing September 2026              
Debt Instrument [Line Items]              
Interest rate (as a percent)   4.704%       4.704%  
Current maturities of long-term debt   $ 2,000       $ 2,000  
Unsecured Debt | Piedmont | Term Loan Facility Maturing August 2026              
Debt Instrument [Line Items]              
Interest rate (as a percent)   4.611%       4.611%  
Current maturities of long-term debt   $ 450       $ 450  
First Mortgage Bonds | Duke Energy Florida | Debt Maturing October 2073, 4.910% Coupon              
Debt Instrument [Line Items]              
Interest rate (as a percent)   3.981%       3.981%  
Current maturities of long-term debt   $ 200       $ 200  
First Mortgage Bonds | Duke Energy Florida | Debt Maturing April 2074, 4.910% Coupon              
Debt Instrument [Line Items]              
Interest rate (as a percent)   3.981%       3.981%  
Current maturities of long-term debt   $ 173       $ 173  
First Mortgage Bonds | Duke Energy Progress | Debt maturing October 2046              
Debt Instrument [Line Items]              
Interest rate (as a percent)   3.30%       3.30%  
Current maturities of long-term debt   $ 200       $ 200  
First Mortgage Bonds | Duke Energy Carolinas | Debt Maturing December 2026, 2.950% Coupon              
Debt Instrument [Line Items]              
Interest rate (as a percent)   2.95%       2.95%  
Current maturities of long-term debt   $ 600       $ 600  
Other              
Debt Instrument [Line Items]              
Current maturities of long-term debt   $ 256       $ 256  
First Mortgage Bonds | Duke Energy Florida | Debt Maturing October 2073, 4.910% Coupon              
Debt Instrument [Line Items]              
Term (in years)           12 months  
First Mortgage Bonds | Duke Energy Florida | Debt Maturing April 2074, 4.910% Coupon              
Debt Instrument [Line Items]              
Term (in years)           12 months  
v3.25.4
Debt and Credit Facilities (Annual Maturities) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Long-term Debt, Fiscal Year Maturity [Abstract]    
2026 $ 7,123  
2027 3,639  
2028 4,079  
2029 4,554  
2030 4,433  
Thereafter 63,037  
Total long-term debt, including current maturities 86,865  
Unamortized debt discount and premium, net (921) $ (1,000)
Purchase Accounting Adjustments    
Long-term Debt, Fiscal Year Maturity [Abstract]    
Unamortized debt discount and premium, net 921  
Duke Energy Carolinas    
Long-term Debt, Fiscal Year Maturity [Abstract]    
2026 630  
2027 67  
2028 1,018  
2029 522  
2030 1,277  
Thereafter 15,375  
Total long-term debt, including current maturities 18,889  
Progress Energy    
Long-term Debt, Fiscal Year Maturity [Abstract]    
2026 730  
2027 1,322  
2028 1,427  
2029 1,634  
2030 1,481  
Thereafter 20,459  
Total long-term debt, including current maturities 27,053  
Duke Energy Progress    
Long-term Debt, Fiscal Year Maturity [Abstract]    
2026 287  
2027 604  
2028 608  
2029 863  
2030 371  
Thereafter 11,265  
Total long-term debt, including current maturities 13,998  
Duke Energy Florida    
Long-term Debt, Fiscal Year Maturity [Abstract]    
2026 443  
2027 718  
2028 819  
2029 771  
2030 1,111  
Thereafter 7,543  
Total long-term debt, including current maturities 11,405  
Duke Energy Ohio    
Long-term Debt, Fiscal Year Maturity [Abstract]    
2026 45  
2027 77  
2028 40  
2029 505  
2030 528  
Thereafter 3,267  
Total long-term debt, including current maturities 4,462  
Duke Energy Indiana    
Long-term Debt, Fiscal Year Maturity [Abstract]    
2026 4  
2027 28  
2028 7  
2029 5  
2030 155  
Thereafter 4,937  
Total long-term debt, including current maturities 5,136  
Piedmont    
Long-term Debt, Fiscal Year Maturity [Abstract]    
2026 490  
2027 300  
2029 660  
Thereafter 2,826  
Total long-term debt, including current maturities $ 4,276  
v3.25.4
Debt and Credit Facilities (Short Term Obligations Classified As Long Term) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt $ 937 $ 937
Tax-exempt bonds    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt 312 312
Commercial Paper    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt 625 625
Duke Energy Carolinas    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt 300 300
Duke Energy Carolinas | Tax-exempt bonds    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt   0
Duke Energy Carolinas | Commercial Paper    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt 300 300
Duke Energy Progress    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt 150 150
Duke Energy Progress | Tax-exempt bonds    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt   0
Duke Energy Progress | Commercial Paper    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt 150 150
Duke Energy Ohio    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt 52 52
Duke Energy Ohio | Tax-exempt bonds    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt 27 27
Duke Energy Ohio | Commercial Paper    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt 25 25
Duke Energy Indiana    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt 435 435
Duke Energy Indiana | Tax-exempt bonds    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt 285 285
Duke Energy Indiana | Commercial Paper    
Debt Instrument [Line Items]    
Short term obligations classified as long-term debt $ 150 $ 150
v3.25.4
Debt and Credit Facilities (Narrative) (Details)
 1 Months Ended 2 Months Ended 3 Months Ended 5 Months Ended
Nov. 07, 2024
USD ($)
Apr. 03, 2023
Jan. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
$ / shares
Oct. 31, 2025
USD ($)
Sep. 30, 2025
USD ($)
Aug. 31, 2025
USD ($)
Jun. 30, 2025
USD ($)
Apr. 30, 2024
USD ($)
Mar. 31, 2024
USD ($)
Jan. 31, 2024
USD ($)
Apr. 30, 2023
USD ($)
$ / shares
Sep. 30, 2022
USD ($)
Dec. 31, 2024
USD ($)
$ / shares
Sep. 30, 2025
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
$ / shares
Mar. 31, 2025
USD ($)
Feb. 28, 2025
USD ($)
Mar. 31, 2022
USD ($)
Debt Instrument [Line Items]                                        
Debt issuances       $ 7,005,000,000                   $ 7,740,000,000     $ 7,005,000,000      
Repayments of debt       $ 500,000,000 $ 95,000,000 $ 650,000,000   $ 150,000,000                        
Common stock, par value (in usd per share) | $ / shares       $ 0.001                   $ 0.001     $ 0.001      
Demand notes, maximum amount available for sale                         $ 4,000,000,000              
Demand notes, maximum amount outstanding                         $ 2,000,000,000              
Principal amount of demand notes       $ 1,110,000,000                   $ 1,070,000,000     $ 1,110,000,000      
Current maturities of long-term debt       7,104,000,000                   4,349,000,000     7,104,000,000      
Other loans outstanding against cash surrender value of life insurance policies       $ 935,000,000                   903,000,000     $ 935,000,000      
Maximum                                        
Debt Instrument [Line Items]                                        
Debt to total capitalization percentage, for each borrower       0.65                         0.65      
Revolving Credit Facility                                        
Debt Instrument [Line Items]                                        
Facility size       $ 10,000,000,000                         $ 10,000,000,000 $ 10,000,000,000 $ 9,000,000,000  
Letters of Credit Outstanding, Amount       7,000,000                         7,000,000      
June 2017 Three Year Revolving Credit Facility                                        
Debt Instrument [Line Items]                                        
Term (in years)                         3 years              
Subsequent Event                                        
Debt Instrument [Line Items]                                        
Repayments of debt     $ 45,000,000                                  
4.25% Convertible Senior notes Due April 2026                                        
Debt Instrument [Line Items]                                        
Interest rate (as a percent)                       4.125%                
Duke Energy Term Loan Facility | Line of Credit                                        
Debt Instrument [Line Items]                                        
Term (in years) 2 years                                      
Duke Energy Carolinas                                        
Debt Instrument [Line Items]                                        
Debt issuances       2,243,000,000                   1,000,000,000     2,243,000,000      
Current maturities of long-term debt       $ 629,000,000                   521,000,000     $ 629,000,000      
Duke Energy Carolinas | Maximum                                        
Debt Instrument [Line Items]                                        
Debt to total capitalization percentage, for each borrower       0.65                         0.65      
Duke Energy Carolinas | Revolving Credit Facility                                        
Debt Instrument [Line Items]                                        
Facility size       $ 1,650,000,000                         $ 1,650,000,000      
Letters of Credit Outstanding, Amount       4,000,000                         4,000,000      
Duke Energy Carolinas | Duke Energy Term Loan Facility | Line of Credit                                        
Debt Instrument [Line Items]                                        
Facility size $ 700,000,000                                      
Drawings on credit facility                           455,000,000            
Parent                                        
Debt Instrument [Line Items]                                        
Debt issuances       1,750,000,000                   4,565,000,000     1,750,000,000      
Parent | Line of Credit | Revolving Credit Facility                                        
Debt Instrument [Line Items]                                        
Repayments of debt                     $ 1,000,000,000                  
Facility size                                       $ 1,400,000,000
Parent | 4.25% Convertible Senior notes Due April 2026                                        
Debt Instrument [Line Items]                                        
Debt issuances                       $ 1,700,000,000                
Debt conversion rate (as a percent)   25.00%                                    
Common stock, par value (in usd per share) | $ / shares                       $ 0.001                
Conversion ratio                       0.0084131                
Parent | Duke Energy Term Loan Facility | Line of Credit                                        
Debt Instrument [Line Items]                                        
Term (in years)                   364 days                    
Repayments of debt                               $ 500,000,000        
Facility size                   $ 700,000,000                    
Drawings on credit facility                 $ 500,000,000                      
Parent | Delayed Draw Term Loan Facility | Line of Credit | Term Loan Facility                                        
Debt Instrument [Line Items]                                        
Term (in years)           364 days                            
Facility size           $ 2,000,000,000                 $ 2,000,000,000          
Drawings on credit facility           $ 2,000,000,000.0                            
Duke Energy Florida                                        
Debt Instrument [Line Items]                                        
Debt issuances       1,100,000,000                   173,000,000     1,100,000,000      
Current maturities of long-term debt       $ 437,000,000                   534,000,000     $ 437,000,000      
Duke Energy Florida | Maximum                                        
Debt Instrument [Line Items]                                        
Debt to total capitalization percentage, for each borrower       0.65                         0.65      
Duke Energy Florida | Revolving Credit Facility                                        
Debt Instrument [Line Items]                                        
Facility size       $ 700,000,000                         $ 700,000,000      
Duke Energy Florida | Duke Energy Term Loan Facility | Line of Credit                                        
Debt Instrument [Line Items]                                        
Term (in years) 364 days                                      
Facility size $ 800,000,000                                      
Drawings on credit facility                           $ 100,000,000            
Duke Energy Florida | Duke Energy Term Loan Facility | Line of Credit | Term Loan Facility                                        
Debt Instrument [Line Items]                                        
Repayments of debt         $ 350,000,000                   $ 450,000,000          
Progress Energy                                        
Debt Instrument [Line Items]                                        
Common stock, par value (in usd per share) | $ / shares       $ 0.01                   $ 0.01     $ 0.01      
Current maturities of long-term debt       $ 722,000,000                   $ 1,517,000,000     $ 722,000,000      
Progress Energy | Maximum                                        
Debt Instrument [Line Items]                                        
Debt to total capitalization percentage, for each borrower       0.65                         0.65      
Duke Energy Ohio                                        
Debt Instrument [Line Items]                                        
Debt issuances       $ 501,000,000                   $ 650,000,000     $ 501,000,000      
Common stock, par value (in usd per share) | $ / shares       $ 8.50                   $ 8.50     $ 8.50      
Current maturities of long-term debt       $ 45,000,000                   $ 245,000,000     $ 45,000,000      
Duke Energy Ohio | Maximum                                        
Debt Instrument [Line Items]                                        
Debt to total capitalization percentage, for each borrower       0.65                         0.65      
Duke Energy Ohio | Revolving Credit Facility                                        
Debt Instrument [Line Items]                                        
Facility size       $ 700,000,000                         $ 700,000,000      
Duke Energy Indiana                                        
Debt Instrument [Line Items]                                        
Debt issuances       300,000,000                   300,000,000     300,000,000      
Current maturities of long-term debt       $ 4,000,000                   4,000,000     $ 4,000,000      
Duke Energy Indiana | Maximum                                        
Debt Instrument [Line Items]                                        
Debt to total capitalization percentage, for each borrower       0.65                         0.65      
Duke Energy Indiana | Revolving Credit Facility                                        
Debt Instrument [Line Items]                                        
Facility size       $ 850,000,000                         $ 850,000,000      
Duke Energy Progress                                        
Debt Instrument [Line Items]                                        
Debt issuances       2,561,000,000                   677,000,000     2,561,000,000      
Current maturities of long-term debt       285,000,000                   983,000,000     285,000,000      
Other loans outstanding against cash surrender value of life insurance policies       $ 31,000,000                   32,000,000     $ 31,000,000      
Duke Energy Progress | Maximum                                        
Debt Instrument [Line Items]                                        
Debt to total capitalization percentage, for each borrower       0.65                         0.65      
Duke Energy Progress | Revolving Credit Facility                                        
Debt Instrument [Line Items]                                        
Facility size       $ 1,675,000,000                         $ 1,675,000,000      
Letters of Credit Outstanding, Amount       $ 1,000,000                         $ 1,000,000      
Duke Energy Progress | Duke Energy Term Loan Facility | Line of Credit                                        
Debt Instrument [Line Items]                                        
Facility size $ 250,000,000                                      
Drawings on credit facility                           185,000,000            
Piedmont                                        
Debt Instrument [Line Items]                                        
Debt issuances                           $ 375,000,000            
Common stock, par value (in usd per share) | $ / shares       $ 0                   $ 0     $ 0      
Current maturities of long-term debt       $ 490,000,000                   $ 205,000,000     $ 490,000,000      
Piedmont | Maximum                                        
Debt Instrument [Line Items]                                        
Debt to total capitalization percentage, for each borrower       0.70                         0.70      
Piedmont | Revolving Credit Facility                                        
Debt Instrument [Line Items]                                        
Facility size       $ 1,000,000,000                         $ 1,000,000,000      
Piedmont | Term Loan Facility Maturing August 2026 | Unsecured Debt                                        
Debt Instrument [Line Items]                                        
Interest rate (as a percent)       4.611%                         4.611%      
Current maturities of long-term debt       $ 450,000,000                         $ 450,000,000      
Piedmont | Term Loan Facility Maturing August 2026 | Line of Credit | Term Loan Facility                                        
Debt Instrument [Line Items]                                        
Term (in years)             364 days                          
Repayments of debt                                 150,000,000      
Facility size             $ 450,000,000                          
Drawings on credit facility                                 $ 450,000,000      
v3.25.4
Debt and Credit Facilities (Summary of Debt Issuances) (Details)
€ in Millions
 1 Months Ended 12 Months Ended
Jan. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Oct. 31, 2025
USD ($)
Sep. 30, 2025
USD ($)
Jun. 30, 2025
USD ($)
Apr. 30, 2025
USD ($)
Jan. 31, 2025
USD ($)
Mar. 31, 2024
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Apr. 30, 2024
USD ($)
Apr. 30, 2024
EUR (€)
Debt Instrument [Line Items]                        
Debt issuances   $ 7,005,000,000             $ 7,005,000,000 $ 7,740,000,000    
Repayments of debt   $ 500,000,000 $ 95,000,000 $ 650,000,000 $ 150,000,000              
Subsequent Event                        
Debt Instrument [Line Items]                        
Repayments of debt $ 45,000,000                      
5.410% Unsecured Debt Due September 2030 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   5.41%             5.41%      
Debt issuances   $ 68,000,000             $ 68,000,000      
6.010 Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   6.01%             6.01%      
Debt issuances   $ 43,000,000             $ 43,000,000      
6.110% Unsecured Debt Due September 2037 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   6.11%             6.11%      
Debt issuances   $ 40,000,000             $ 40,000,000      
4.950% Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   4.95%             4.95%      
Debt issuances   $ 1,000,000,000             $ 1,000,000,000      
5.700 Unsecured Debt Due September 2055 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   5.70%             5.70%      
Debt issuances   $ 750,000,000             $ 750,000,000      
4.226% Secured Debt due July 2037 | Secured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   4.226%             4.226%      
Debt issuances   $ 200,000,000             $ 200,000,000      
5.070% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   5.07%             5.07%      
Debt issuances   $ 382,000,000             $ 382,000,000      
4.890% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   4.89%             4.89%      
Debt issuances   $ 461,000,000             $ 461,000,000      
4.898% Secured Debt due July 2046 | Secured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   4.898%             4.898%      
Debt issuances   $ 561,000,000             $ 561,000,000      
First Mortgage Bonds Issued January 2025 Due March 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   4.85%             4.85%      
Debt issuances   $ 400,000,000             $ 400,000,000      
First Mortgage Bonds Issued January 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   5.25%             5.25%      
Debt issuances   $ 700,000,000             $ 700,000,000      
First Mortgage Bonds Issued March 2025 Due March 2027 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   4.35%             4.35%      
Debt issuances   $ 500,000,000             $ 500,000,000      
First Mortgage Bonds Issued March 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   5.05%             5.05%      
Debt issuances   $ 850,000,000             $ 850,000,000      
First Mortgage Bonds Issued March 2025 Due March 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   5.55%             5.55%      
Debt issuances   $ 750,000,000             $ 750,000,000      
First Mortgage Bonds Issued May 2025 Due may 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   5.90%             5.90%      
Debt issuances   $ 300,000,000             $ 300,000,000      
First Mortgage Bonds Issued June 2025 Due June 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   5.30%             5.30%      
Debt issuances   $ 350,000,000             $ 350,000,000      
First Mortgage Bonds Issued November 2025 Due December 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   4.20%             4.20%      
Debt issuances   $ 500,000,000             $ 500,000,000      
First Mortgage Bonds Issued November 2025 Due December 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   4.85%             4.85%      
Debt issuances   $ 600,000,000             $ 600,000,000      
4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   4.85%    
Debt issuances                   $ 600,000,000    
4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   4.85%    
Debt issuances                   $ 650,000,000    
April 2024 5.648% Notes Due April 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   5.648%    
Debt issuances                   $ 815,000,000 $ 815,000,000  
June 2024 5.450% Notes Due June 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   5.45%    
Debt issuances                   $ 750,000,000    
June 2024 5.800% Notes Due June 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   5.80%    
Debt issuances                   $ 750,000,000    
June 2024 5.900% Notes Due June 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   5.90%    
Debt issuances                   $ 80,000,000    
June 2024 6.000% Notes Due July 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   6.00%    
Debt issuances                   $ 95,000,000    
June 2024 6.170% Notes Due July 2039 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   6.17%    
Debt issuances                   $ 50,000,000    
August 2024 5.100% Notes Due February 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   5.10%    
Debt issuances                   $ 375,000,000    
August 2024 6.450% Notes Due September 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)   6.45%             6.45% 6.45%    
Debt issuances   $ 1,000,000,000             $ 1,000,000,000 $ 1,000,000,000    
Interest rate reset period (in years)                 5 years      
Discount rate (as a percent)                 2.588%      
Percentage of principal                 100.00%      
April 2024 5.404% Notes | Secured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   5.404%    
Debt issuances                   $ 177,000,000    
4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   4.85%    
Debt issuances                   $ 575,000,000    
5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   5.40%    
Debt issuances                   $ 425,000,000    
5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   5.25%    
Debt issuances                   $ 300,000,000    
5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   5.10%    
Debt issuances                   $ 500,000,000    
5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   5.55%    
Debt issuances                   $ 425,000,000    
April 2024 Notes Due April 2074 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                   3.981%    
Debt issuances                   $ 173,000,000    
Maturities Due March 2024                        
Debt Instrument [Line Items]                        
Repayments of debt               $ 1,000,000,000        
3.75% Senior Notes due 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Interest rate (as a percent)                     3.75% 3.75%
Debt issuances | €                       € 750
Debt maturing April 2024 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt repurchased                     $ 1,000,000,000  
DERF Accounts Receivable Securitization Facility Maturing January 2025 | Secured Debt                        
Debt Instrument [Line Items]                        
Repayments of debt             $ 500,000,000          
DEPR Accounts Receivable Securitization Facility Maturing April 2025 | Secured Debt                        
Debt Instrument [Line Items]                        
Repayments of debt           $ 400,000,000            
Parent                        
Debt Instrument [Line Items]                        
Debt issuances   1,750,000,000             $ 1,750,000,000 4,565,000,000    
Parent | 5.410% Unsecured Debt Due September 2030 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | 6.010 Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | 6.110% Unsecured Debt Due September 2037 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | 4.950% Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   1,000,000,000             1,000,000,000      
Parent | 5.700 Unsecured Debt Due September 2055 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   750,000,000             750,000,000      
Parent | 4.226% Secured Debt due July 2037 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | 5.070% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | 4.890% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | 4.898% Secured Debt due July 2046 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | First Mortgage Bonds Issued January 2025 Due March 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | First Mortgage Bonds Issued January 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | First Mortgage Bonds Issued March 2025 Due March 2027 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | First Mortgage Bonds Issued March 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | First Mortgage Bonds Issued March 2025 Due March 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | First Mortgage Bonds Issued May 2025 Due may 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | First Mortgage Bonds Issued June 2025 Due June 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | First Mortgage Bonds Issued November 2025 Due December 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | First Mortgage Bonds Issued November 2025 Due December 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Parent | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   600,000,000    
Parent | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   650,000,000    
Parent | April 2024 5.648% Notes Due April 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   815,000,000    
Parent | June 2024 5.450% Notes Due June 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   750,000,000    
Parent | June 2024 5.800% Notes Due June 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   750,000,000    
Parent | June 2024 5.900% Notes Due June 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Parent | June 2024 6.000% Notes Due July 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Parent | June 2024 6.170% Notes Due July 2039 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Parent | August 2024 5.100% Notes Due February 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Parent | August 2024 6.450% Notes Due September 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   1,000,000,000    
Parent | April 2024 5.404% Notes | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Parent | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Parent | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Parent | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Parent | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Parent | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Parent | April 2024 Notes Due April 2074 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas                        
Debt Instrument [Line Items]                        
Debt issuances   2,243,000,000             2,243,000,000 1,000,000,000    
Duke Energy Carolinas | 5.410% Unsecured Debt Due September 2030 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Carolinas | 6.010 Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Carolinas | 6.110% Unsecured Debt Due September 2037 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Carolinas | 4.950% Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Carolinas | 5.700 Unsecured Debt Due September 2055 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Carolinas | 4.226% Secured Debt due July 2037 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   200,000,000             200,000,000      
Duke Energy Carolinas | 5.070% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   382,000,000             382,000,000      
Duke Energy Carolinas | 4.890% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Carolinas | 4.898% Secured Debt due July 2046 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   561,000,000             561,000,000      
Duke Energy Carolinas | First Mortgage Bonds Issued January 2025 Due March 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   400,000,000             400,000,000      
Duke Energy Carolinas | First Mortgage Bonds Issued January 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   700,000,000             700,000,000      
Duke Energy Carolinas | First Mortgage Bonds Issued March 2025 Due March 2027 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Carolinas | First Mortgage Bonds Issued March 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Carolinas | First Mortgage Bonds Issued March 2025 Due March 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Carolinas | First Mortgage Bonds Issued May 2025 Due may 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Carolinas | First Mortgage Bonds Issued June 2025 Due June 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Carolinas | First Mortgage Bonds Issued November 2025 Due December 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Carolinas | First Mortgage Bonds Issued November 2025 Due December 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Carolinas | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | April 2024 5.648% Notes Due April 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | June 2024 5.450% Notes Due June 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | June 2024 5.800% Notes Due June 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | June 2024 5.900% Notes Due June 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | June 2024 6.000% Notes Due July 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | June 2024 6.170% Notes Due July 2039 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | August 2024 5.100% Notes Due February 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | August 2024 6.450% Notes Due September 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | April 2024 5.404% Notes | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   575,000,000    
Duke Energy Carolinas | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   425,000,000    
Duke Energy Carolinas | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Carolinas | April 2024 Notes Due April 2074 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress                        
Debt Instrument [Line Items]                        
Debt issuances   2,561,000,000             2,561,000,000 677,000,000    
Duke Energy Progress | 5.410% Unsecured Debt Due September 2030 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | 6.010 Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | 6.110% Unsecured Debt Due September 2037 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | 4.950% Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | 5.700 Unsecured Debt Due September 2055 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | 4.226% Secured Debt due July 2037 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | 5.070% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | 4.890% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   461,000,000             461,000,000      
Duke Energy Progress | 4.898% Secured Debt due July 2046 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | First Mortgage Bonds Issued January 2025 Due March 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | First Mortgage Bonds Issued January 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | First Mortgage Bonds Issued March 2025 Due March 2027 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   500,000,000             500,000,000      
Duke Energy Progress | First Mortgage Bonds Issued March 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   850,000,000             850,000,000      
Duke Energy Progress | First Mortgage Bonds Issued March 2025 Due March 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   750,000,000             750,000,000      
Duke Energy Progress | First Mortgage Bonds Issued May 2025 Due may 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | First Mortgage Bonds Issued June 2025 Due June 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | First Mortgage Bonds Issued November 2025 Due December 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | First Mortgage Bonds Issued November 2025 Due December 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Progress | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | April 2024 5.648% Notes Due April 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | June 2024 5.450% Notes Due June 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | June 2024 5.800% Notes Due June 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | June 2024 5.900% Notes Due June 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | June 2024 6.000% Notes Due July 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | June 2024 6.170% Notes Due July 2039 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | August 2024 5.100% Notes Due February 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | August 2024 6.450% Notes Due September 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | April 2024 5.404% Notes | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   177,000,000    
Duke Energy Progress | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   500,000,000    
Duke Energy Progress | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Progress | April 2024 Notes Due April 2074 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida                        
Debt Instrument [Line Items]                        
Debt issuances   1,100,000,000             1,100,000,000 173,000,000    
Duke Energy Florida | 5.410% Unsecured Debt Due September 2030 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | 6.010 Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | 6.110% Unsecured Debt Due September 2037 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | 4.950% Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | 5.700 Unsecured Debt Due September 2055 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | 4.226% Secured Debt due July 2037 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | 5.070% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | 4.890% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | 4.898% Secured Debt due July 2046 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | First Mortgage Bonds Issued January 2025 Due March 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | First Mortgage Bonds Issued January 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | First Mortgage Bonds Issued March 2025 Due March 2027 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | First Mortgage Bonds Issued March 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | First Mortgage Bonds Issued March 2025 Due March 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | First Mortgage Bonds Issued May 2025 Due may 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | First Mortgage Bonds Issued June 2025 Due June 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Florida | First Mortgage Bonds Issued November 2025 Due December 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   500,000,000             500,000,000      
Duke Energy Florida | First Mortgage Bonds Issued November 2025 Due December 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   600,000,000             600,000,000      
Duke Energy Florida | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | April 2024 5.648% Notes Due April 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | June 2024 5.450% Notes Due June 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | June 2024 5.800% Notes Due June 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | June 2024 5.900% Notes Due June 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | June 2024 6.000% Notes Due July 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | June 2024 6.170% Notes Due July 2039 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | August 2024 5.100% Notes Due February 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | August 2024 6.450% Notes Due September 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | April 2024 5.404% Notes | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Florida | April 2024 Notes Due April 2074 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   173,000,000    
Duke Energy Ohio                        
Debt Instrument [Line Items]                        
Debt issuances   501,000,000             501,000,000 650,000,000    
Duke Energy Ohio | 5.410% Unsecured Debt Due September 2030 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   68,000,000             68,000,000      
Duke Energy Ohio | 6.010 Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   43,000,000             43,000,000      
Duke Energy Ohio | 6.110% Unsecured Debt Due September 2037 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   40,000,000             40,000,000      
Duke Energy Ohio | 4.950% Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | 5.700 Unsecured Debt Due September 2055 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | 4.226% Secured Debt due July 2037 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | 5.070% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | 4.890% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | 4.898% Secured Debt due July 2046 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | First Mortgage Bonds Issued January 2025 Due March 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | First Mortgage Bonds Issued January 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | First Mortgage Bonds Issued March 2025 Due March 2027 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | First Mortgage Bonds Issued March 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | First Mortgage Bonds Issued March 2025 Due March 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | First Mortgage Bonds Issued May 2025 Due may 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | First Mortgage Bonds Issued June 2025 Due June 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   350,000,000             350,000,000      
Duke Energy Ohio | First Mortgage Bonds Issued November 2025 Due December 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | First Mortgage Bonds Issued November 2025 Due December 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Ohio | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Ohio | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Ohio | April 2024 5.648% Notes Due April 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Ohio | June 2024 5.450% Notes Due June 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Ohio | June 2024 5.800% Notes Due June 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Ohio | June 2024 5.900% Notes Due June 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   80,000,000    
Duke Energy Ohio | June 2024 6.000% Notes Due July 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   95,000,000    
Duke Energy Ohio | June 2024 6.170% Notes Due July 2039 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   50,000,000    
Duke Energy Ohio | August 2024 5.100% Notes Due February 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Ohio | August 2024 6.450% Notes Due September 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Ohio | April 2024 5.404% Notes | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Ohio | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Ohio | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Ohio | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Ohio | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Ohio | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   425,000,000    
Duke Energy Ohio | April 2024 Notes Due April 2074 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana                        
Debt Instrument [Line Items]                        
Debt issuances   300,000,000             300,000,000 300,000,000    
Duke Energy Indiana | 5.410% Unsecured Debt Due September 2030 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | 6.010 Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | 6.110% Unsecured Debt Due September 2037 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | 4.950% Unsecured Debt Due September 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | 5.700 Unsecured Debt Due September 2055 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | 4.226% Secured Debt due July 2037 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | 5.070% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | 4.890% Secured Debt due July 2048 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | 4.898% Secured Debt due July 2046 | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | First Mortgage Bonds Issued January 2025 Due March 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | First Mortgage Bonds Issued January 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | First Mortgage Bonds Issued March 2025 Due March 2027 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | First Mortgage Bonds Issued March 2025 Due March 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | First Mortgage Bonds Issued March 2025 Due March 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | First Mortgage Bonds Issued May 2025 Due may 2055 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   300,000,000             300,000,000      
Duke Energy Indiana | First Mortgage Bonds Issued June 2025 Due June 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | First Mortgage Bonds Issued November 2025 Due December 2030 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   0             0      
Duke Energy Indiana | First Mortgage Bonds Issued November 2025 Due December 2035 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances   $ 0             $ 0      
Duke Energy Indiana | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | April 2024 5.648% Notes Due April 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | June 2024 5.450% Notes Due June 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | June 2024 5.800% Notes Due June 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | June 2024 5.900% Notes Due June 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | June 2024 6.000% Notes Due July 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | June 2024 6.170% Notes Due July 2039 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | August 2024 5.100% Notes Due February 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | August 2024 6.450% Notes Due September 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | April 2024 5.404% Notes | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   300,000,000    
Duke Energy Indiana | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Duke Energy Indiana | April 2024 Notes Due April 2074 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont                        
Debt Instrument [Line Items]                        
Debt issuances                   375,000,000    
Piedmont | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | April 2024 5.648% Notes Due April 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | June 2024 5.450% Notes Due June 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | June 2024 5.800% Notes Due June 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | June 2024 5.900% Notes Due June 2031 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | June 2024 6.000% Notes Due July 2034 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | June 2024 6.170% Notes Due July 2039 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | August 2024 5.100% Notes Due February 2035 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   375,000,000    
Piedmont | August 2024 6.450% Notes Due September 2054 | Unsecured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | April 2024 5.404% Notes | Secured Debt                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   0    
Piedmont | April 2024 Notes Due April 2074 | First Mortgage Bonds                        
Debt Instrument [Line Items]                        
Debt issuances                   $ 0    
v3.25.4
Debt and Credit Facilities (Schedule of Line of Credit Facilities) (Details) - USD ($)
Dec. 31, 2025
Mar. 31, 2025
Feb. 28, 2025
Dec. 31, 2024
Line of Credit Facility [Line Items]        
Tax-exempt bonds $ (1,331,000,000)     $ (1,331,000,000)
Duke Energy Progress        
Line of Credit Facility [Line Items]        
Tax-exempt bonds (500,000,000)     (500,000,000)
Duke Energy Ohio        
Line of Credit Facility [Line Items]        
Tax-exempt bonds (77,000,000)     (77,000,000)
Duke Energy Indiana        
Line of Credit Facility [Line Items]        
Tax-exempt bonds (352,000,000)     $ (352,000,000)
Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Facility size 10,000,000,000 $ 10,000,000,000 $ 9,000,000,000  
Commercial paper (2,144,000,000)      
Outstanding letters of credit (7,000,000)      
Tax-exempt bonds (81,000,000)      
Available capacity 7,768,000,000      
Revolving Credit Facility | Duke Energy Carolinas        
Line of Credit Facility [Line Items]        
Facility size 1,650,000,000      
Commercial paper (300,000,000)      
Outstanding letters of credit (4,000,000)      
Available capacity 1,346,000,000      
Revolving Credit Facility | Duke Energy Progress        
Line of Credit Facility [Line Items]        
Facility size 1,675,000,000      
Commercial paper (150,000,000)      
Outstanding letters of credit (1,000,000)      
Available capacity 1,524,000,000      
Revolving Credit Facility | Duke Energy Florida        
Line of Credit Facility [Line Items]        
Facility size 700,000,000      
Available capacity 700,000,000      
Revolving Credit Facility | Duke Energy Ohio        
Line of Credit Facility [Line Items]        
Facility size 700,000,000      
Commercial paper (34,000,000)      
Available capacity 666,000,000      
Revolving Credit Facility | Duke Energy Indiana        
Line of Credit Facility [Line Items]        
Facility size 850,000,000      
Commercial paper (260,000,000)      
Tax-exempt bonds (81,000,000)      
Available capacity 509,000,000      
Revolving Credit Facility | Piedmont        
Line of Credit Facility [Line Items]        
Facility size 1,000,000,000      
Commercial paper (381,000,000)      
Available capacity 619,000,000      
Revolving Credit Facility | Parent Company        
Line of Credit Facility [Line Items]        
Facility size 3,425,000,000      
Commercial paper (1,019,000,000)      
Outstanding letters of credit (2,000,000)      
Available capacity 2,404,000,000      
Revolving Credit Facility | Parent Company | Proceeds Loaned To Subsidiary Registrants        
Line of Credit Facility [Line Items]        
Commercial paper $ (625,000,000)      
v3.25.4
Guarantees and Indemnifications (Narrative) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Noncurrent Liabilities    
Guarantor Obligations [Line Items]    
Face value of guarantees $ 1 $ 2
Letters of credit    
Guarantor Obligations [Line Items]    
Maximum potential amount of future payments associated with guarantees 335  
Unused capacity 0  
Performance guarantee | Customers and other third parties    
Guarantor Obligations [Line Items]    
Maximum potential amount of future payments associated with guarantees 26  
Performance guarantee | Spectra Capital    
Guarantor Obligations [Line Items]    
Maximum potential amount of future payments associated with guarantees $ 18  
v3.25.4
Joint Ownership of Generating and Transmission Facilities (Schedule Joint Ownership of Generating and Transmission Facilities) (Details)
$ in Millions
Dec. 31, 2025
USD ($)
Duke Energy Carolinas | Catawba (units 1 and 2)  
Jointly Owned Utility Plant Interests [Line Items]  
Ownership interest (as a percent) 19.25%
Property, plant, and equipment $ 1,067
Accumulated depreciation 600
Construction work in progress $ 28
Duke Energy Carolinas | W.S. Lee CC  
Jointly Owned Utility Plant Interests [Line Items]  
Ownership interest (as a percent) 87.27%
Property, plant, and equipment $ 659
Accumulated depreciation 139
Construction work in progress $ 6
Duke Energy Indiana | Gibson (unit 5)  
Jointly Owned Utility Plant Interests [Line Items]  
Ownership interest (as a percent) 50.05%
Property, plant, and equipment $ 491
Accumulated depreciation 295
Construction work in progress $ 1
Duke Energy Indiana | Vermillion  
Jointly Owned Utility Plant Interests [Line Items]  
Ownership interest (as a percent) 62.50%
Property, plant, and equipment $ 182
Accumulated depreciation 127
Construction work in progress 1
Duke Energy Indiana | Transmission and local facilities  
Jointly Owned Utility Plant Interests [Line Items]  
Property, plant, and equipment 8,543
Accumulated depreciation 1,805
Construction work in progress $ 357
v3.25.4
Asset Retirement Obligations (Recorded on the Balance Sheet) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation $ 9,625 $ 9,988 $ 9,152
Less: Current portion 579 650  
Total noncurrent asset retirement obligation 9,046 9,338  
Decommissioning of nuclear power facilities      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 4,668    
Closure of ash impoundments      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 4,607    
Other      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 350    
Duke Energy Carolinas      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 3,842 3,990 4,013
Less: Current portion 245 247  
Total noncurrent asset retirement obligation 3,597 3,743  
Duke Energy Carolinas | Decommissioning of nuclear power facilities      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 2,158    
Duke Energy Carolinas | Closure of ash impoundments      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 1,610    
Duke Energy Carolinas | Other      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 74    
Progress Energy      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 4,486 4,548 4,145
Less: Current portion 196 231  
Total noncurrent asset retirement obligation 4,290 4,317  
Progress Energy | Decommissioning of nuclear power facilities      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 2,497    
Progress Energy | Closure of ash impoundments      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 1,838    
Progress Energy | Other      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 151    
Duke Energy Progress      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 4,289 4,334 3,870
Less: Current portion 194 230  
Total noncurrent asset retirement obligation 4,095 4,104  
Duke Energy Progress | Decommissioning of nuclear power facilities      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 2,428    
Duke Energy Progress | Closure of ash impoundments      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 1,814    
Duke Energy Progress | Other      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 47    
Duke Energy Florida      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 197 214 275
Less: Current portion 2 1  
Total noncurrent asset retirement obligation 195 213  
Duke Energy Florida | Decommissioning of nuclear power facilities      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 69    
Duke Energy Florida | Closure of ash impoundments      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 24    
Duke Energy Florida | Other      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 104    
Duke Energy Ohio      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 135 139 136
Less: Current portion 6 8  
Total noncurrent asset retirement obligation 129 131  
Duke Energy Ohio | Closure of ash impoundments      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 64    
Duke Energy Ohio | Other      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 71    
Duke Energy Indiana      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 1,125 1,268 809
Less: Current portion 133 164  
Total noncurrent asset retirement obligation 992 1,104  
Duke Energy Indiana | Closure of ash impoundments      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 1,095    
Duke Energy Indiana | Other      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 30    
Piedmont      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation 25 24 $ 21
Total noncurrent asset retirement obligation 25 $ 24  
Piedmont | Other      
Asset Retirement Obligation [Line Items]      
Total asset retirement obligation $ 25    
v3.25.4
Asset Retirement Obligations (NDTF Information) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
NDTF Information [Abstract]    
Decommissioning costs $ 8,972  
Legally restricted NDTF investments, fair value 11,373 $ 10,044
Duke Energy Carolinas    
NDTF Information [Abstract]    
Decommissioning costs 4,439  
Legally restricted NDTF investments, fair value 6,453 5,687
Duke Energy Progress    
NDTF Information [Abstract]    
Decommissioning costs 4,477  
Legally restricted NDTF investments, fair value 4,920 4,357
Duke Energy Florida    
NDTF Information [Abstract]    
Decommissioning costs 56  
Progress Energy    
NDTF Information [Abstract]    
Decommissioning costs 4,533  
Legally restricted NDTF investments, fair value $ 4,920 $ 4,357
v3.25.4
Asset Retirement Obligations (Narrative) (Details)
 12 Months Ended
Dec. 31, 2025
Nuclear Regulatory Commission  
Asset Retirement Obligation [Line Items]  
Operating license extension (in years) 20 years
v3.25.4
Asset Retirement Obligations (Rollforward) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Asset Retirement Obligation [Line Items]    
Beginning Balance $ 9,988 $ 9,152
Accretion expense 474 434
Liabilities settled (584) (634)
Liabilities incurred in the current year 18 20
Revisions in estimates of cash flows (271) 1,016
Ending Balance 9,625 9,988
Duke Energy Carolinas    
Asset Retirement Obligation [Line Items]    
Beginning Balance 3,990 4,013
Accretion expense 188 183
Liabilities settled (227) (212)
Liabilities incurred in the current year 1 8
Revisions in estimates of cash flows (110) (2)
Ending Balance 3,842 3,990
Progress Energy    
Asset Retirement Obligation [Line Items]    
Beginning Balance 4,548 4,145
Accretion expense 219 199
Liabilities settled (245) (321)
Liabilities incurred in the current year 17 12
Revisions in estimates of cash flows (53) 513
Ending Balance 4,486 4,548
Duke Energy Progress    
Asset Retirement Obligation [Line Items]    
Beginning Balance 4,334 3,870
Accretion expense 211 190
Liabilities settled (203) (232)
Liabilities incurred in the current year 5  
Revisions in estimates of cash flows (58) 506
Ending Balance 4,289 4,334
Duke Energy Florida    
Asset Retirement Obligation [Line Items]    
Beginning Balance 214 275
Accretion expense 8 9
Liabilities settled (42) (89)
Liabilities incurred in the current year 12 12
Revisions in estimates of cash flows 5 7
Ending Balance 197 214
Duke Energy Ohio    
Asset Retirement Obligation [Line Items]    
Beginning Balance 139 136
Accretion expense 7 7
Liabilities settled (6) (7)
Revisions in estimates of cash flows (5) 3
Ending Balance 135 139
Duke Energy Indiana    
Asset Retirement Obligation [Line Items]    
Beginning Balance 1,268 809
Accretion expense 65 49
Liabilities settled (106) (94)
Revisions in estimates of cash flows (102) 504
Ending Balance 1,125 1,268
Piedmont    
Asset Retirement Obligation [Line Items]    
Beginning Balance 24 21
Accretion expense 1 2
Revisions in estimates of cash flows   1
Ending Balance $ 25 $ 24
v3.25.4
Property, Plant and Equipment (Schedule of Property, Plant and Equipment) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Average remaining useful life (in years) 11 years 13 years
Land $ 2,667 $ 2,503
Other buildings and improvements 6,429 6,844
Equipment 4,193 3,850
Construction in process 10,075 7,756
Total property, plant and equipment 190,409 178,737
Total net property, plant and equipment $ 129,959 $ 121,626
Other, estimated useful life, in years 11 years 10 years
Finance leases, gross $ 682 $ 670
Nuclear fuel    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Nuclear fuel 3,683 3,518
Accumulated depreciation and amortization (1,886) (1,824)
Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization $ (59,441) $ (55,143)
Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Average remaining useful life (in years) 38 years 37 years
Plant - transmission and distribution $ 145,947 $ 137,836
Regulated | Natural gas transmission and distribution    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Average remaining useful life (in years) 58 years 57 years
Plant - transmission and distribution $ 14,201 $ 13,482
Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Average remaining useful life (in years) 40 years 41 years
Other buildings and improvements $ 3,214 $ 2,948
Nonregulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (1,009) (1,968)
Accumulated amortization of finance leases (35) (25)
Duke Energy Carolinas    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 644 617
Other buildings and improvements 1,362 1,227
Equipment 1,132 997
Construction in process 3,708 2,735
Total property, plant and equipment 62,513 58,382
Total net property, plant and equipment 41,855 39,292
Finance leases, gross 349 336
Accumulated amortization of finance leases (98) (84)
Duke Energy Carolinas | Nuclear fuel    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Nuclear fuel 2,128 2,003
Accumulated depreciation and amortization (1,064) (1,010)
Duke Energy Carolinas | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (20,658) (19,090)
Duke Energy Carolinas | Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 52,259 49,547
Duke Energy Carolinas | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements 1,280 1,256
Progress Energy    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 1,226 1,134
Other buildings and improvements 2,115 1,953
Equipment 1,456 1,252
Construction in process 4,390 3,657
Total property, plant and equipment 78,347 72,560
Total net property, plant and equipment 52,922 48,974
Finance leases, gross 605 620
Accumulated amortization of finance leases (208) (159)
Progress Energy | Nuclear fuel    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Nuclear fuel 1,555 1,515
Accumulated depreciation and amortization (822) (814)
Progress Energy | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (25,425) (23,586)
Progress Energy | Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 66,751 62,351
Progress Energy | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements 854 698
Duke Energy Progress    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 557 535
Other buildings and improvements 1,466 1,349
Equipment 852 753
Construction in process 2,761 1,884
Total property, plant and equipment 45,175 42,060
Total net property, plant and equipment 28,195 26,130
Finance leases, gross 478 512
Accumulated amortization of finance leases (203) (159)
Duke Energy Progress | Nuclear fuel    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Nuclear fuel 1,555 1,515
Accumulated depreciation and amortization (822) (814)
Duke Energy Progress | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (16,980) (15,930)
Duke Energy Progress | Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 37,561 35,633
Duke Energy Progress | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements 423 391
Duke Energy Florida    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 669 599
Other buildings and improvements 637 594
Equipment 604 499
Construction in process 1,629 1,773
Total property, plant and equipment 33,160 30,490
Total net property, plant and equipment 24,723 22,840
Finance leases, gross 127 108
Accumulated amortization of finance leases (5)  
Duke Energy Florida | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (8,437) (7,650)
Duke Energy Florida | Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 29,190 26,718
Duke Energy Florida | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements 431 307
Duke Energy Ohio    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 289 258
Other buildings and improvements 478 426
Equipment 555 542
Construction in process 394 385
Total property, plant and equipment 14,627 13,918
Total net property, plant and equipment 10,815 10,244
Duke Energy Ohio | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (3,812) (3,674)
Duke Energy Ohio | Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 7,945 7,634
Duke Energy Ohio | Regulated | Natural gas transmission and distribution    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 4,529 4,255
Duke Energy Ohio | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements 437 418
Duke Energy Indiana    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 157 144
Other buildings and improvements 287 254
Equipment 540 490
Construction in process 884 406
Total property, plant and equipment 21,241 19,970
Total net property, plant and equipment 13,749 13,122
Finance leases, gross 13 10
Accumulated amortization of finance leases (5) (4)
Duke Energy Indiana | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (7,492) (6,848)
Duke Energy Indiana | Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 18,992 18,304
Duke Energy Indiana | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements 381 372
Piedmont    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 326 325
Other buildings and improvements 526 488
Equipment 131 157
Construction in process 408 311
Total property, plant and equipment 11,325 10,712
Total net property, plant and equipment 9,157 8,671
Piedmont | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (2,168) (2,041)
Piedmont | Regulated | Natural gas transmission and distribution    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 9,672 9,227
Piedmont | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements $ 262 $ 204
v3.25.4
Property, Plant and Equipment (Schedule of Capitalized Interest) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]      
Capitalized interest $ 182 $ 201 $ 201
Duke Energy Carolinas      
Property, Plant and Equipment [Line Items]      
Capitalized interest 66 61 62
Progress Energy      
Property, Plant and Equipment [Line Items]      
Capitalized interest 60 57 41
Duke Energy Progress      
Property, Plant and Equipment [Line Items]      
Capitalized interest 53 52 35
Duke Energy Florida      
Property, Plant and Equipment [Line Items]      
Capitalized interest 7 5 6
Duke Energy Ohio      
Property, Plant and Equipment [Line Items]      
Capitalized interest 10 14 16
Duke Energy Indiana      
Property, Plant and Equipment [Line Items]      
Capitalized interest 2 13  
PISCC amortization     (21)
Piedmont      
Property, Plant and Equipment [Line Items]      
Capitalized interest $ 7 $ 8 $ 8
v3.25.4
Goodwill and Intangible Assets (Narrative) (Details) - USD ($)
 3 Months Ended 12 Months Ended
Sep. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Goodwill [Line Items]      
Goodwill   $ 19,010,000,000 $ 19,010,000,000
Goodwill accumulated impairment loss   0 0
Goodwill reclassified to non-current assets held for sale $ 294,000,000    
Impairment charges   0  
Discontinued Operations, Held-for-sale      
Goodwill [Line Items]      
Goodwill   294,000,000 294,000,000
Discontinued Operations, Held-for-sale | Piedmont Tennessee Disposal Group      
Goodwill [Line Items]      
Goodwill 294,000,000 294,000,000 294,000,000
Electric Utilities and Infrastructure      
Goodwill [Line Items]      
Goodwill   17,400,000,000 17,400,000,000
Gas Utilities and Infrastructure      
Goodwill [Line Items]      
Goodwill   1,600,000,000 1,600,000,000
Duke Energy Ohio      
Goodwill [Line Items]      
Goodwill   920,000,000 920,000,000
Goodwill accumulated impairment loss   216,000,000 216,000,000
Duke Energy Ohio | Electric Utilities and Infrastructure      
Goodwill [Line Items]      
Goodwill   596,000,000 596,000,000
Duke Energy Ohio | Gas Utilities and Infrastructure      
Goodwill [Line Items]      
Goodwill   324,000,000 324,000,000
Progress Energy      
Goodwill [Line Items]      
Goodwill   3,655,000,000 3,655,000,000
Progress Energy | Electric Utilities and Infrastructure      
Goodwill [Line Items]      
Goodwill accumulated impairment loss   0  
Piedmont      
Goodwill [Line Items]      
Goodwill   39,000,000 39,000,000
Goodwill reclassified to non-current assets held for sale $ 10,000,000    
Piedmont | Discontinued Operations, Held-for-sale | Piedmont Tennessee Disposal Group      
Goodwill [Line Items]      
Goodwill   10,000,000 $ 10,000,000
Piedmont | Gas Utilities and Infrastructure      
Goodwill [Line Items]      
Goodwill accumulated impairment loss   $ 0  
v3.25.4
Goodwill and Intangible Assets (Schedule of Intangible Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts $ 314 $ 296
Total intangible assets, net 291 277
Emission allowances    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 8 8
Renewable energy certificates    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 259 241
Other    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 47 47
Accumulated amortization (23) (19)
Duke Energy Carolinas    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 115 103
Total intangible assets, net 115 103
Duke Energy Carolinas | Renewable energy certificates    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 115 103
Progress Energy    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 153 146
Total intangible assets, net 149 143
Progress Energy | Emission allowances    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 5 5
Progress Energy | Renewable energy certificates    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 143 136
Progress Energy | Other    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 5 5
Accumulated amortization (4) (3)
Duke Energy Progress    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 146 139
Total intangible assets, net 146 139
Duke Energy Progress | Emission allowances    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 2 2
Duke Energy Progress | Renewable energy certificates    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 143 136
Duke Energy Progress | Other    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 1 1
Duke Energy Florida    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 7 7
Total intangible assets, net 3 4
Duke Energy Florida | Emission allowances    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 3 3
Duke Energy Florida | Other    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 4 4
Accumulated amortization (4) (3)
Duke Energy Ohio    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 1 2
Total intangible assets, net 1 2
Duke Energy Ohio | Renewable energy certificates    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 1 2
Duke Energy Indiana    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 2 2
Total intangible assets, net 2 2
Duke Energy Indiana | Emission allowances    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 2 2
Piedmont    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 22 22
Total intangible assets, net 10 13
Piedmont | Other    
Finite-Lived Intangible Assets, Net [Abstract]    
Total gross carrying amounts 22 22
Accumulated amortization $ (12) $ (9)
v3.25.4
Investments in Unconsolidated Affiliates (Investments in Equity Method Unconsolidated Affiliates) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Investments In Unconsolidated Affiliates [Line Items]      
Investments $ 330 $ 353  
Equity in earnings (losses) of unconsolidated affiliates 51 (9) $ 113
Electric Utilities and Infrastructure      
Investments In Unconsolidated Affiliates [Line Items]      
Investments 0 28  
Equity in earnings (losses) of unconsolidated affiliates 0 (11) 7
Gas Utilities and Infrastructure      
Investments In Unconsolidated Affiliates [Line Items]      
Investments 177 186  
Equity in earnings (losses) of unconsolidated affiliates 15 (48) 40
Other      
Investments In Unconsolidated Affiliates [Line Items]      
Investments 153 139  
Equity in earnings (losses) of unconsolidated affiliates $ 36 $ 50 $ 66
v3.25.4
Investments in Unconsolidated Affiliates (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Investments In Unconsolidated Affiliates [Line Items]      
Distributions from equity investments $ 30 $ 66 $ 50
Distributions from equity investments, return of capital $ 22 25 16
Electric Utilities and Infrastructure | DATC      
Investments In Unconsolidated Affiliates [Line Items]      
Ownership interest (as a percent) 50.00%    
Pretax charge $ 15    
Electric Utilities and Infrastructure | Pioneer      
Investments In Unconsolidated Affiliates [Line Items]      
Ownership interest (as a percent) 50.00%    
Gas Utilities and Infrastructure | Sabal Trail      
Investments In Unconsolidated Affiliates [Line Items]      
Ownership interest (as a percent) 7.50%    
Gas Utilities and Infrastructure | SustainRNG      
Investments In Unconsolidated Affiliates [Line Items]      
Pretax charge $ 54    
Other | NMC      
Investments In Unconsolidated Affiliates [Line Items]      
Ownership interest (as a percent) 17.50%    
Board representation and voting rights, ownership interest (as a percent) 25.00%    
Piedmont      
Investments In Unconsolidated Affiliates [Line Items]      
Distributions from equity investments $ 5 9 9
Distributions from equity investments, return of capital $ 2 $ 2 $ 1
Piedmont | Gas Utilities and Infrastructure | Cardinal      
Investments In Unconsolidated Affiliates [Line Items]      
Ownership interest (as a percent) 21.49%    
Piedmont | Gas Utilities and Infrastructure | Pine Needle      
Investments In Unconsolidated Affiliates [Line Items]      
Ownership interest (as a percent) 45.00%    
Piedmont | Gas Utilities and Infrastructure | Hardy Storage      
Investments In Unconsolidated Affiliates [Line Items]      
Ownership interest (as a percent) 50.00%    
v3.25.4
Related Party Transactions (Other Revenue and Expense) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party $ 23,656 $ 22,457 $ 22,042
Duke Energy Carolinas      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 6,892 7,136 6,255
Duke Energy Carolinas | Corporate governance and shared service expenses | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 638 812 823
Duke Energy Carolinas | Indemnification coverages | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 54 44 34
Duke Energy Carolinas | Joint Dispatch Agreement (JDA) revenue | Duke Energy Progress      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 349 187 177
Related party transaction, other revenues from transactions with related party 119 35 34
Duke Energy Carolinas | Intercompany natural gas transactions | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 6 12 11
Progress Energy      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 10,804 10,234 10,485
Progress Energy | Corporate governance and shared service expenses | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 591 709 736
Progress Energy | Indemnification coverages | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 63 57 47
Progress Energy | Joint Dispatch Agreement (JDA) revenue | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 119 35 34
Related party transaction, other revenues from transactions with related party 349 187 177
Progress Energy | Intercompany natural gas transactions | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 76 75 75
Duke Energy Progress      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 5,553 5,316 5,041
Duke Energy Progress | Corporate governance and shared service expenses | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 342 426 434
Duke Energy Progress | Indemnification coverages | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 26 23 20
Duke Energy Progress | Joint Dispatch Agreement (JDA) revenue | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 119 35 34
Related party transaction, other revenues from transactions with related party 349 187 177
Duke Energy Progress | Intercompany natural gas transactions | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 76 75 75
Duke Energy Florida      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 5,237 4,898 5,426
Duke Energy Florida | Corporate governance and shared service expenses | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 249 283 302
Duke Energy Florida | Indemnification coverages | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 37 34 27
Duke Energy Ohio      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 2,213 1,968 1,983
Duke Energy Ohio | Corporate governance and shared service expenses | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 260 304 294
Duke Energy Ohio | Indemnification coverages | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 6 6 5
Duke Energy Indiana      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 2,760 2,361 2,655
Duke Energy Indiana | Corporate governance and shared service expenses | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 293 355 365
Duke Energy Indiana | Indemnification coverages | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 9 10 8
Piedmont      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 1,541 1,098 1,066
Piedmont | Corporate governance and shared service expenses | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 143 166 149
Piedmont | Indemnification coverages | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party 5 4 4
Piedmont | Intercompany natural gas transactions | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, other revenues from transactions with related party 82 87 86
Piedmont | Natural gas storage and transportation costs | Related Party      
Related Party Transaction [Line Items]      
Related party transaction, expenses from transactions with related party $ 22 $ 23 $ 24
v3.25.4
Related Party Transactions (Intercompany Income Taxes) (Details) - Related Party - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Duke Energy Carolinas    
Related Party Transaction [Line Items]    
Intercompany income tax payable $ 81 $ 419
Progress Energy    
Related Party Transaction [Line Items]    
Intercompany income tax payable 72 169
Duke Energy Progress    
Related Party Transaction [Line Items]    
Intercompany income tax payable 77 315
Duke Energy Florida    
Related Party Transaction [Line Items]    
Intercompany income tax receivable   154
Intercompany income tax payable 12  
Duke Energy Ohio    
Related Party Transaction [Line Items]    
Intercompany income tax payable 10 43
Duke Energy Indiana    
Related Party Transaction [Line Items]    
Intercompany income tax payable 39 110
Piedmont    
Related Party Transaction [Line Items]    
Intercompany income tax payable $ 59 $ 43
v3.25.4
Derivatives and Hedging (Notional Amounts of Derivative Instruments) (Details)
dth in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
GWh
dth
Dec. 31, 2024
USD ($)
GWh
dth
Interest Rate Contracts    
Derivative [Line Items]    
Pay Notional $ 5,577 $ 6,027
Interest Rate Contracts | Designated contracts | Cash flow hedges    
Derivative [Line Items]    
Pay Notional 1,725 2,825
Interest Rate Contracts | Undesignated contracts    
Derivative [Line Items]    
Pay Notional $ 3,852 $ 3,202
Commodity contracts | Electricity (GWh)    
Derivative [Line Items]    
Notional amount, energy measure, electricity (in GWh) | GWh 10,615 12,229
Commodity contracts | Natural gas (millions of Dth)    
Derivative [Line Items]    
Notional amount, energy measure, electricity (in GWh) | dth 814 779
Duke Energy Carolinas | Interest Rate Contracts    
Derivative [Line Items]    
Pay Notional $ 2,175 $ 1,150
Duke Energy Carolinas | Interest Rate Contracts | Undesignated contracts    
Derivative [Line Items]    
Pay Notional $ 2,175 $ 1,150
Duke Energy Carolinas | Commodity contracts | Natural gas (millions of Dth)    
Derivative [Line Items]    
Notional amount, energy measure, electricity (in GWh) | dth 307 276
Progress Energy | Interest Rate Contracts    
Derivative [Line Items]    
Pay Notional $ 1,325 $ 1,775
Progress Energy | Interest Rate Contracts | Undesignated contracts    
Derivative [Line Items]    
Pay Notional $ 1,325 $ 1,775
Progress Energy | Commodity contracts | Natural gas (millions of Dth)    
Derivative [Line Items]    
Notional amount, energy measure, electricity (in GWh) | dth 286 246
Duke Energy Progress | Interest Rate Contracts    
Derivative [Line Items]    
Pay Notional $ 650 $ 1,125
Duke Energy Progress | Interest Rate Contracts | Undesignated contracts    
Derivative [Line Items]    
Pay Notional $ 650 $ 1,125
Duke Energy Progress | Commodity contracts | Natural gas (millions of Dth)    
Derivative [Line Items]    
Notional amount, energy measure, electricity (in GWh) | dth 286 246
Duke Energy Florida | Interest Rate Contracts    
Derivative [Line Items]    
Pay Notional $ 675 $ 650
Duke Energy Florida | Interest Rate Contracts | Undesignated contracts    
Derivative [Line Items]    
Pay Notional 675 650
Duke Energy Ohio | Interest Rate Contracts    
Derivative [Line Items]    
Pay Notional 27 27
Duke Energy Ohio | Interest Rate Contracts | Undesignated contracts    
Derivative [Line Items]    
Pay Notional $ 27 $ 27
Duke Energy Ohio | Commodity contracts | Electricity (GWh)    
Derivative [Line Items]    
Notional amount, energy measure, electricity (in GWh) | GWh 1,349 1,287
Duke Energy Indiana | Interest Rate Contracts    
Derivative [Line Items]    
Pay Notional $ 325 $ 250
Duke Energy Indiana | Interest Rate Contracts | Undesignated contracts    
Derivative [Line Items]    
Pay Notional $ 325 $ 250
Duke Energy Indiana | Commodity contracts | Electricity (GWh)    
Derivative [Line Items]    
Notional amount, energy measure, electricity (in GWh) | GWh 9,266 10,942
Duke Energy Indiana | Commodity contracts | Natural gas (millions of Dth)    
Derivative [Line Items]    
Notional amount, energy measure, electricity (in GWh) | dth 33 32
Piedmont | Commodity contracts | Natural gas (millions of Dth)    
Derivative [Line Items]    
Notional amount, energy measure, electricity (in GWh) | dth 188 225
v3.25.4
Derivatives and Hedging (Foreign Exchange Risk) (Details) - Foreign Currency Contracts - Designated contracts
€ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2025
EUR (€)
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Pay Notional $ 1,997      
Receive notional | €       € 1,850
Fair value gain (loss) 258 $ (113) $ 32  
Senior Notes, 3.10% Due June 2028        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Pay Notional $ 645      
Pay rate (as a percent) 4.75%     4.75%
Receive notional | €       € 600
Receive rate (as a percent) 0.0310     0.0310
Fair value gain (loss) $ 84 (41) 17  
Senior Notes, 3.85% Due June 2034        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Pay Notional $ 537      
Pay rate (as a percent) 5.31%     5.31%
Receive notional | €       € 500
Receive rate (as a percent) 0.0385     0.0385
Fair value gain (loss) $ 70 (34) 15  
Senior Notes, 3.75% Due April 2031        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Pay Notional $ 815      
Pay rate (as a percent) 5.65%     5.65%
Receive notional | €       € 750
Receive rate (as a percent) 0.0375     0.0375
Fair value gain (loss) $ 104 $ (38) $ 0  
v3.25.4
Derivatives and Hedging (Location and Fair Value Amounts of Derivatives Reflected in the Consolidated Balance Sheets) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Derivatives, Fair Value [Line Items]    
Total Derivative Assets $ 382 $ 434
Total Derivative Liabilities 244 319
Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 116 267
Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 266 167
Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 131 145
Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 113 174
Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 56 109
Total Derivative Liabilities 210 242
Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 170 320
Total Derivative Liabilities 7 3
Foreign Currency Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 27 74
Foreign Currency Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 156 5
Foreign Currency Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 156  
Designated as Hedging Instruments | Interest Rate Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 25 108
Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 20 52
Designated as Hedging Instruments | Foreign Currency Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 27  
Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities   39
Not Designated as Hedging Instruments | Commodity Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 28 49
Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 28 60
Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 104 108
Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 106 134
Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 63 110
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 62  
Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities   2
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 7 1
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   50
Not Designated as Hedging Instruments | Foreign Currency Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities   35
Not Designated as Hedging Instruments | Foreign Currency Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   5
Duke Energy Carolinas    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 101 94
Total Derivative Liabilities 88 88
Duke Energy Carolinas | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 43 39
Duke Energy Carolinas | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 58 55
Duke Energy Carolinas | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 56 57
Duke Energy Carolinas | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 32 31
Duke Energy Carolinas | Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 21 49
Total Derivative Liabilities 85 88
Duke Energy Carolinas | Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 80 45
Total Derivative Liabilities 3  
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 9 20
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 12 29
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 53 57
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 32 31
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 34 19
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 46  
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 3  
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   26
Progress Energy    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 67 127
Total Derivative Liabilities 48 58
Progress Energy | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 36 72
Progress Energy | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 31 55
Progress Energy | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 21 34
Progress Energy | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 27 24
Progress Energy | Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 23 49
Total Derivative Liabilities 46 56
Progress Energy | Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 44 78
Total Derivative Liabilities 2 2
Progress Energy | Foreign Currency Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities   0
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 7 17
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 16 32
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 25 32
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 21 24
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 29 55
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 15  
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities (4) 2
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 6  
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   23
Duke Energy Progress    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 52 109
Total Derivative Liabilities 47 57
Duke Energy Progress | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 36 61
Duke Energy Progress | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 16 48
Duke Energy Progress | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 20 33
Duke Energy Progress | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 27 24
Duke Energy Progress | Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 23 49
Total Derivative Liabilities 46 56
Duke Energy Progress | Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 29 60
Total Derivative Liabilities 1 1
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 7 17
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 16 32
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 25 32
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 21 24
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 29 44
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities (5) 1
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 6  
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   16
Duke Energy Florida    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 15 18
Total Derivative Liabilities 1 1
Duke Energy Florida | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 1 11
Duke Energy Florida | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 14 7
Duke Energy Florida | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 1 1
Duke Energy Florida | Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 15 18
Total Derivative Liabilities 1 1
Duke Energy Florida | Foreign Currency Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities   0
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 1 11
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 14  
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 1 1
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   7
Duke Energy Ohio    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   1
Total Derivative Liabilities 1 1
Duke Energy Ohio | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   1
Duke Energy Ohio | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 1 1
Duke Energy Ohio | Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   1
Duke Energy Ohio | Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 1 1
Duke Energy Ohio | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   1
Duke Energy Ohio | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 1 1
Duke Energy Indiana    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 12 44
Total Derivative Liabilities 9 3
Duke Energy Indiana | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 11 44
Duke Energy Indiana | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 1  
Duke Energy Indiana | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 9 3
Duke Energy Indiana | Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 11 8
Total Derivative Liabilities 7 3
Duke Energy Indiana | Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 1 36
Total Derivative Liabilities 2  
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 11 8
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 7 3
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   36
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets 1  
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 2  
Piedmont    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   1
Total Derivative Liabilities 72 94
Piedmont | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   1
Piedmont | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 19 16
Piedmont | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 53 78
Piedmont | Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   1
Total Derivative Liabilities 72 94
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets    
Derivatives, Fair Value [Line Items]    
Total Derivative Assets   1
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities 19 16
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Total Derivative Liabilities $ 53 $ 78
v3.25.4
Derivatives and Hedging (Schedule of Offsetting Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized $ 382 $ 434
Net amounts presented in Current Assets: Other 100 238
Net amounts presented in Other Noncurrent Assets: Other $ 244 $ 130
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Current Assets: Other Current Assets: Other
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other (including amounts related to VIEs) Other (including amounts related to VIEs)
Foreign Currency Contracts    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized $ 156 $ 5
Current Assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 116 267
Offset (16) (29)
Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 266 167
Offset (22) (37)
Noncurrent assets | Foreign Currency Contracts    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 156  
Duke Energy Carolinas    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 101 94
Net amounts presented in Current Assets: Other 34 24
Net amounts presented in Other Noncurrent Assets: Other $ 47 $ 36
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Current Assets: Other Current Assets: Other
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other (including amounts related to VIEs) Other (including amounts related to VIEs)
Duke Energy Carolinas | Current Assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized $ 43 $ 39
Offset (9) (15)
Duke Energy Carolinas | Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 58 55
Offset (11) (19)
Progress Energy    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 67 127
Net amounts presented in Current Assets: Other 29 58
Net amounts presented in Other Noncurrent Assets: Other $ 20 $ 38
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Current Assets: Other Current Assets: Other
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other (including amounts related to VIEs) Other (including amounts related to VIEs)
Progress Energy | Current Assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized $ 36 $ 72
Offset (7) (14)
Progress Energy | Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 31 55
Offset (11) (17)
Duke Energy Progress    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 52 109
Net amounts presented in Current Assets: Other 29 47
Net amounts presented in Other Noncurrent Assets: Other $ 5 $ 31
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Current Assets: Other Current Assets: Other
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other (including amounts related to VIEs) Other (including amounts related to VIEs)
Duke Energy Progress | Current Assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized $ 36 $ 61
Offset (7) (14)
Duke Energy Progress | Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 16 48
Offset (11) (17)
Duke Energy Florida    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 15 18
Net amounts presented in Current Assets: Other 1 11
Net amounts presented in Other Noncurrent Assets: Other $ 14 $ 7
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Current Assets: Other Current Assets: Other
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other (including amounts related to VIEs) Other (including amounts related to VIEs)
Duke Energy Florida | Current Assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized $ 1 $ 11
Duke Energy Florida | Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 14 7
Duke Energy Ohio    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized   1
Net amounts presented in Current Assets: Other   $ 1
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]   Current Assets: Other
Duke Energy Ohio | Current Assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized   $ 1
Duke Energy Indiana    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 12 44
Net amounts presented in Current Assets: Other 11 $ 44
Net amounts presented in Other Noncurrent Assets: Other $ 1  
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Current Assets: Other Current Assets: Other
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other (including amounts related to VIEs)  
Duke Energy Indiana | Current Assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized $ 11 $ 44
Duke Energy Indiana | Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized $ 1  
Piedmont    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized   1
Net amounts presented in Current Assets: Other   $ 1
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]   Current Assets: Other
Piedmont | Current Assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized   $ 1
v3.25.4
Derivatives and Hedging (Schedule of Offsetting Liabilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized $ 244 $ 319
Net amounts presented in Current Liabilities: Other 107 113
Net amounts presented in Other Noncurrent Liabilities: Other $ 90 $ 133
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Current Liabilities: Other Current Liabilities: Other
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other Other
Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized $ 131 $ 145
Offset (16) (29)
Cash collateral posted (8) (3)
Noncurrent Liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 113 174
Offset (22) (37)
Cash collateral posted (1) (4)
Duke Energy Carolinas    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 88 88
Net amounts presented in Current Liabilities: Other 46 40
Net amounts presented in Other Noncurrent Liabilities: Other $ 20 $ 8
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Current Liabilities: Other Current Liabilities: Other
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other Other
Duke Energy Carolinas | Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized $ 56 $ 57
Offset (9) (15)
Cash collateral posted (1) (2)
Duke Energy Carolinas | Noncurrent Liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 32 31
Offset (11) (19)
Cash collateral posted (1) (4)
Progress Energy    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 48 58
Net amounts presented in Current Liabilities: Other 14 20
Net amounts presented in Other Noncurrent Liabilities: Other $ 16 $ 7
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Current Liabilities: Other Current Liabilities: Other
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other Other
Progress Energy | Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized $ 21 $ 34
Offset (7) (14)
Progress Energy | Noncurrent Liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 27 24
Offset (11) (17)
Duke Energy Progress    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 47 57
Net amounts presented in Current Liabilities: Other 13 19
Net amounts presented in Other Noncurrent Liabilities: Other $ 16 $ 7
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Current Liabilities: Other Current Liabilities: Other
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other Other
Duke Energy Progress | Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized $ 20 $ 33
Offset (7) (14)
Duke Energy Progress | Noncurrent Liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 27 24
Offset (11) (17)
Duke Energy Florida    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 1 1
Net amounts presented in Current Liabilities: Other $ 1 $ 1
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Current Liabilities: Other Current Liabilities: Other
Duke Energy Florida | Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized $ 1 $ 1
Duke Energy Ohio    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 1 1
Net amounts presented in Other Noncurrent Liabilities: Other 1 $ 1
Derivative Liability, Statement of Financial Position [Extensible Enumeration]   Other
Duke Energy Ohio | Noncurrent Liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 1 $ 1
Duke Energy Indiana    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 9 3
Net amounts presented in Current Liabilities: Other $ 2 $ 2
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Current Liabilities: Other Current Liabilities: Other
Duke Energy Indiana | Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized $ 9 $ 3
Cash collateral posted (7) (1)
Piedmont    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 72 94
Net amounts presented in Current Liabilities: Other 19 16
Net amounts presented in Other Noncurrent Liabilities: Other 53 $ 78
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]   Current Liabilities: Other
Derivative Liability, Statement of Financial Position [Extensible Enumeration]   Other
Piedmont | Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 19 $ 16
Piedmont | Noncurrent Liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized $ 53 $ 78
v3.25.4
Derivatives and Hedging (Derivative Instruments with Credit-Risk Related Contingent Features and Cash Collateral) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features    
Aggregate fair value of derivatives in a net liability position $ 102 $ 101
Fair value of collateral already posted 2 6
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered 100 95
Duke Energy Carolinas    
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features    
Aggregate fair value of derivatives in a net liability position 59 52
Fair value of collateral already posted 2 6
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered 57 46
Progress Energy    
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features    
Aggregate fair value of derivatives in a net liability position 43 49
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered 43 49
Duke Energy Progress    
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features    
Aggregate fair value of derivatives in a net liability position 43 49
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered $ 43 $ 49
v3.25.4
Investments in Debt and Equity Securities (Estimated Fair Value of Investments in Debt and Equity Securities) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Debt Securities, Available-for-sale    
Estimated Fair Value $ 4,439  
Total Investments    
Unrealized Holding Gains 6,153 $ 5,804
Unrealized Holding Losses 98 219
Estimated Fair Value 13,325 11,905
NDTF    
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 6,041 5,753
Gross Unrealized Holding Losses 14 61
Estimated Fair Value 8,519 8,233
Debt Securities, Available-for-sale    
Estimated Fair Value 4,193 3,060
Total Investments    
Unrealized Holding Gains 6,096 5,765
Unrealized Holding Losses 89 200
Estimated Fair Value 12,887 11,432
NDTF | Cash and cash equivalents    
Cash and Cash Equivalents    
Estimated Fair Value 175 139
NDTF | Corporate debt securities    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 17 6
Gross Unrealized Holding Losses 18 33
Estimated Fair Value 1,056 673
NDTF | Municipal bonds    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 4 2
Gross Unrealized Holding Losses 13 14
Estimated Fair Value 366 342
NDTF | U.S. government bonds    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 31 3
Gross Unrealized Holding Losses 39 84
Estimated Fair Value 2,487 1,806
NDTF | Other debt securities    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 3 1
Gross Unrealized Holding Losses 5 8
Estimated Fair Value 284 239
Other Investments    
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 57 39
Gross Unrealized Holding Losses   4
Estimated Fair Value 139 160
Debt Securities, Available-for-sale    
Estimated Fair Value 246 266
Total Investments    
Unrealized Holding Gains 57 39
Unrealized Holding Losses 9 19
Estimated Fair Value 438 473
Other Investments | Cash and cash equivalents    
Cash and Cash Equivalents    
Estimated Fair Value 53 47
Other Investments | Corporate debt securities    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Losses 2 5
Estimated Fair Value 75 79
Other Investments | Municipal bonds    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Losses 1 1
Estimated Fair Value 67 83
Other Investments | U.S. government bonds    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Losses 4 5
Estimated Fair Value 59 59
Other Investments | Other debt securities    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Losses 2 4
Estimated Fair Value 45 45
Duke Energy Carolinas    
Debt Securities, Available-for-sale    
Estimated Fair Value 2,349  
Duke Energy Carolinas | NDTF    
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 3,533 3,386
Gross Unrealized Holding Losses 10 33
Estimated Fair Value 4,896 4,751
Debt Securities, Available-for-sale    
Estimated Fair Value 2,349 1,651
Total Investments    
Unrealized Holding Gains 3,561 3,389
Unrealized Holding Losses 61 122
Estimated Fair Value 7,337 6,464
Duke Energy Carolinas | NDTF | Cash and cash equivalents    
Cash and Cash Equivalents    
Estimated Fair Value 92 62
Duke Energy Carolinas | NDTF | Corporate debt securities    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 9 2
Gross Unrealized Holding Losses 15 27
Estimated Fair Value 662 401
Duke Energy Carolinas | NDTF | Municipal bonds    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Losses 5 4
Estimated Fair Value 42 36
Duke Energy Carolinas | NDTF | U.S. government bonds    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 16  
Gross Unrealized Holding Losses 26 50
Estimated Fair Value 1,403 991
Duke Energy Carolinas | NDTF | Other debt securities    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 3 1
Gross Unrealized Holding Losses 5 8
Estimated Fair Value 242 223
Progress Energy    
Debt Securities, Available-for-sale    
Estimated Fair Value 1,868  
Total Investments    
Unrealized Holding Gains 2,535 2,376
Unrealized Holding Losses 28 78
Estimated Fair Value 5,608 5,015
Progress Energy | NDTF    
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 2,508 2,367
Gross Unrealized Holding Losses 4 28
Estimated Fair Value 3,623 3,482
Debt Securities, Available-for-sale    
Estimated Fair Value 1,844 1,409
Total Investments    
Unrealized Holding Gains 2,535 2,376
Unrealized Holding Losses 28 78
Estimated Fair Value 5,550 4,968
Progress Energy | NDTF | Cash and cash equivalents    
Cash and Cash Equivalents    
Estimated Fair Value 83 77
Progress Energy | NDTF | Corporate debt securities    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 8 4
Gross Unrealized Holding Losses 3 6
Estimated Fair Value 394 272
Progress Energy | NDTF | Municipal bonds    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 4 2
Gross Unrealized Holding Losses 8 10
Estimated Fair Value 324 306
Progress Energy | NDTF | U.S. government bonds    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 15 3
Gross Unrealized Holding Losses 13 34
Estimated Fair Value 1,084 815
Progress Energy | NDTF | Other debt securities    
Debt Securities, Available-for-sale    
Estimated Fair Value 42 16
Progress Energy | Other Investments    
Debt Securities, Available-for-sale    
Estimated Fair Value 24 24
Total Investments    
Estimated Fair Value 58 47
Progress Energy | Other Investments | Cash and cash equivalents    
Cash and Cash Equivalents    
Estimated Fair Value 34 23
Progress Energy | Other Investments | Municipal bonds    
Debt Securities, Available-for-sale    
Estimated Fair Value 24 24
Duke Energy Progress    
Debt Securities, Available-for-sale    
Estimated Fair Value 1,698  
Total Investments    
Unrealized Holding Gains 2,406 2,265
Unrealized Holding Losses 25 70
Estimated Fair Value 5,278 4,653
Duke Energy Progress | NDTF    
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 2,380 2,256
Gross Unrealized Holding Losses 4 28
Estimated Fair Value 3,485 3,362
Debt Securities, Available-for-sale    
Estimated Fair Value 1,698 1,221
Total Investments    
Unrealized Holding Gains 2,406 2,265
Unrealized Holding Losses 25 70
Estimated Fair Value 5,254 4,637
Duke Energy Progress | NDTF | Cash and cash equivalents    
Cash and Cash Equivalents    
Estimated Fair Value 71 54
Duke Energy Progress | NDTF | Corporate debt securities    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 8 4
Gross Unrealized Holding Losses 3 6
Estimated Fair Value 375 256
Duke Energy Progress | NDTF | Municipal bonds    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 4 2
Gross Unrealized Holding Losses 8 10
Estimated Fair Value 324 306
Duke Energy Progress | NDTF | U.S. government bonds    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 14 3
Gross Unrealized Holding Losses 10 26
Estimated Fair Value 958 645
Duke Energy Progress | NDTF | Other debt securities    
Debt Securities, Available-for-sale    
Estimated Fair Value 41 14
Duke Energy Progress | Other Investments    
Total Investments    
Estimated Fair Value 24 16
Duke Energy Progress | Other Investments | Cash and cash equivalents    
Cash and Cash Equivalents    
Estimated Fair Value 24 16
Duke Energy Florida    
Debt Securities, Available-for-sale    
Estimated Fair Value 170  
Total Investments    
Unrealized Holding Gains 129 111
Unrealized Holding Losses 3 8
Estimated Fair Value 325 358
Duke Energy Florida | NDTF    
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 128 111
Estimated Fair Value 138 120
Debt Securities, Available-for-sale    
Estimated Fair Value 146 188
Total Investments    
Unrealized Holding Gains 129 111
Unrealized Holding Losses 3 8
Estimated Fair Value 296 331
Duke Energy Florida | NDTF | Cash and cash equivalents    
Cash and Cash Equivalents    
Estimated Fair Value 12 23
Duke Energy Florida | NDTF | Corporate debt securities    
Debt Securities, Available-for-sale    
Estimated Fair Value 19 16
Duke Energy Florida | NDTF | U.S. government bonds    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 1  
Gross Unrealized Holding Losses 3 8
Estimated Fair Value 126 170
Duke Energy Florida | NDTF | Other debt securities    
Debt Securities, Available-for-sale    
Estimated Fair Value 1 2
Duke Energy Florida | Other Investments    
Debt Securities, Available-for-sale    
Estimated Fair Value 24 24
Total Investments    
Estimated Fair Value 29 27
Duke Energy Florida | Other Investments | Cash and cash equivalents    
Cash and Cash Equivalents    
Estimated Fair Value 5 3
Duke Energy Florida | Other Investments | Municipal bonds    
Debt Securities, Available-for-sale    
Estimated Fair Value 24 24
Duke Energy Indiana    
Debt Securities, Available-for-sale    
Estimated Fair Value 29  
Total Investments    
Unrealized Holding Gains 6  
Unrealized Holding Losses 1 5
Estimated Fair Value 82 146
Duke Energy Indiana | Other Investments    
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 6  
Gross Unrealized Holding Losses   4
Estimated Fair Value 53 89
Debt Securities, Available-for-sale    
Estimated Fair Value 29 56
Duke Energy Indiana | Other Investments | Cash and cash equivalents    
Cash and Cash Equivalents    
Estimated Fair Value   1
Duke Energy Indiana | Other Investments | Corporate debt securities    
Debt Securities, Available-for-sale    
Estimated Fair Value 1 6
Duke Energy Indiana | Other Investments | Municipal bonds    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Losses 1 1
Estimated Fair Value 25 43
Duke Energy Indiana | Other Investments | U.S. government bonds    
Debt Securities, Available-for-sale    
Estimated Fair Value $ 3 $ 7
v3.25.4
Investments in Debt and Equity Securities (Realized Gains and Losses) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
FV-NI:      
Realized gains $ 1,174 $ 600 $ 129
Realized losses 145 85 146
AFS:      
Realized gains 67 28 44
Realized losses 77 67 140
Duke Energy Carolinas      
FV-NI:      
Realized gains 693 298 82
Realized losses 77 40 79
AFS:      
Realized gains 51 14 22
Realized losses 57 40 65
Progress Energy      
FV-NI:      
Realized gains 481 302 47
Realized losses 68 45 67
AFS:      
Realized gains 16 14 22
Realized losses 20 27 75
Duke Energy Progress      
FV-NI:      
Realized gains 478 288 44
Realized losses 67 44 66
AFS:      
Realized gains 15 13 20
Realized losses $ 19 $ 26 $ 70
v3.25.4
Investments in Debt and Equity Securities (Maturities) (Details)
$ in Millions
Dec. 31, 2025
USD ($)
Debt Securities, Available-for-sale [Line Items]  
Due in one year or less $ 108
Due after one through five years 1,130
Due after five through 10 years 955
Due after 10 years 2,246
Total 4,439
Duke Energy Carolinas  
Debt Securities, Available-for-sale [Line Items]  
Due in one year or less 15
Due after one through five years 564
Due after five through 10 years 513
Due after 10 years 1,257
Total 2,349
Progress Energy  
Debt Securities, Available-for-sale [Line Items]  
Due in one year or less 92
Due after one through five years 501
Due after five through 10 years 395
Due after 10 years 880
Total 1,868
Duke Energy Progress  
Debt Securities, Available-for-sale [Line Items]  
Due in one year or less 17
Due after one through five years 473
Due after five through 10 years 378
Due after 10 years 830
Total 1,698
Duke Energy Florida  
Debt Securities, Available-for-sale [Line Items]  
Due in one year or less 75
Due after one through five years 28
Due after five through 10 years 17
Due after 10 years 50
Total 170
Duke Energy Indiana  
Debt Securities, Available-for-sale [Line Items]  
Due in one year or less 1
Due after one through five years 8
Due after five through 10 years 6
Due after 10 years 14
Total $ 29
v3.25.4
Fair Value Measurements (Fair Value Measurement Amounts for Assets and Liabilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities $ 4,439  
Derivative assets 382 $ 434
Total assets 13,707 12,339
Derivative liabilities (244) (319)
Net assets $ 13,463 $ 12,020
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other (including amounts related to VIEs) Other (including amounts related to VIEs)
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other  
Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets $ 2 $ 2
Total assets 10,398 9,625
Derivative liabilities (7) (3)
Net assets 10,391 9,622
Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 371 423
Total assets 3,278 2,677
Derivative liabilities (237) (316)
Net assets 3,041 2,361
Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 9 9
Total assets 9 9
Net assets 9 9
Not Categorized    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 22 28
Net assets 22 28
NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 175 139
Equity securities 8,519 8,233
Debt securities 4,193 3,060
NDTF | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 175 139
Debt securities 1,480 1,022
NDTF | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 2,713 2,038
NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 8,519 8,233
NDTF equity securities | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 8,494 8,203
NDTF equity securities | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 3 2
NDTF equity securities | Not Categorized    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 22 28
Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 139 160
Debt securities 246 266
Other Investments | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 139 160
Debt securities 55 52
Other Investments | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 191 214
Other cash and cash equivalents    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 53 47
Other cash and cash equivalents | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 53 47
Duke Energy Carolinas    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 2,349  
Derivative assets 101 94
Total assets 7,438 6,558
Derivative liabilities (88) (88)
Net assets 7,350 6,470
Duke Energy Carolinas | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 5,739 5,303
Net assets 5,739 5,303
Duke Energy Carolinas | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 101 94
Total assets 1,677 1,227
Derivative liabilities (88) (88)
Net assets 1,589 1,139
Duke Energy Carolinas | Not Categorized    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 22 28
Net assets 22 28
Duke Energy Carolinas | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 92 62
Equity securities 4,896 4,751
Debt securities 2,349 1,651
Duke Energy Carolinas | NDTF | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 92 62
Equity securities   4,721
Debt securities 776 520
Duke Energy Carolinas | NDTF | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities   2
Debt securities 1,573 1,131
Duke Energy Carolinas | NDTF | Not Categorized    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities   28
Duke Energy Carolinas | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 4,896  
Duke Energy Carolinas | NDTF equity securities | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 4,871  
Duke Energy Carolinas | NDTF equity securities | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 3  
Duke Energy Carolinas | NDTF equity securities | Not Categorized    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 22  
Progress Energy    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 1,868  
Derivative assets 67 127
Total assets 5,675 5,142
Derivative liabilities (48) (58)
Net assets 5,627 5,084
Progress Energy | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 4,444 4,084
Net assets 4,444 4,084
Progress Energy | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 67 127
Total assets 1,231 1,058
Derivative liabilities (48) (58)
Net assets 1,183 1,000
Progress Energy | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 83 77
Equity securities 3,623 3,482
Debt securities 1,844 1,409
Progress Energy | NDTF | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 83 77
Debt securities 704 502
Progress Energy | NDTF | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 1,140 907
Progress Energy | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 3,623 3,482
Progress Energy | NDTF equity securities | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 3,623 3,482
Progress Energy | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 24 24
Progress Energy | Other Investments | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 24 24
Progress Energy | Other cash and cash equivalents    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 34 23
Progress Energy | Other cash and cash equivalents | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 34 23
Duke Energy Progress    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 1,698  
Derivative assets 52 109
Total assets 5,330 4,762
Derivative liabilities (47) (57)
Net assets 5,283 4,705
Duke Energy Progress | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 4,177 3,797
Net assets 4,177 3,797
Duke Energy Progress | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 52 109
Total assets 1,153 965
Derivative liabilities (47) (57)
Net assets 1,106 908
Duke Energy Progress | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 71 54
Equity securities 3,485 3,362
Debt securities 1,698 1,221
Duke Energy Progress | NDTF | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 71 54
Debt securities 597 365
Duke Energy Progress | NDTF | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 1,101 856
Duke Energy Progress | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 3,485 3,362
Duke Energy Progress | NDTF equity securities | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 3,485 3,362
Duke Energy Progress | Other cash and cash equivalents    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 24 16
Duke Energy Progress | Other cash and cash equivalents | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 24 16
Duke Energy Florida    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 170  
Derivative assets 15 18
Total assets 340 376
Derivative liabilities (1) (1)
Net assets 339 375
Duke Energy Florida | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 262 283
Net assets 262 283
Duke Energy Florida | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 15 18
Total assets 78 93
Derivative liabilities (1) (1)
Net assets 77 92
Duke Energy Florida | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 12 23
Equity securities 138 120
Debt securities 146 188
Duke Energy Florida | NDTF | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 12 23
Debt securities 107 137
Duke Energy Florida | NDTF | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 39 51
Duke Energy Florida | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 138 120
Duke Energy Florida | NDTF equity securities | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 138 120
Duke Energy Florida | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 24 24
Duke Energy Florida | Other Investments | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 24 24
Duke Energy Florida | Other cash and cash equivalents    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 5 3
Duke Energy Florida | Other cash and cash equivalents | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 5 3
Duke Energy Indiana    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 29  
Derivative assets 12 44
Total assets 94 190
Derivative liabilities (9) (3)
Net assets 85 187
Duke Energy Indiana | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 2  
Total assets 55 90
Derivative liabilities (7) (3)
Net assets 48 87
Duke Energy Indiana | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 1 36
Total assets 30 92
Derivative liabilities (2)  
Net assets 28 92
Duke Energy Indiana | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 9 8
Total assets 9 8
Net assets 9 8
Duke Energy Indiana | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 53 89
Debt securities 29 56
Duke Energy Indiana | Other Investments | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 53 89
Duke Energy Indiana | Other Investments | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 29 56
Duke Energy Indiana | Other cash and cash equivalents    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents   1
Duke Energy Indiana | Other cash and cash equivalents | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents   1
Piedmont    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets   1
Derivative liabilities (72) (94)
Net assets (72) (93)
Piedmont | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets   1
Net assets   1
Piedmont | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities (72)  
Net assets $ (72)  
Piedmont | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities   (94)
Net assets   $ (94)
v3.25.4
Fair Value Measurements (Reconciliation of Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Unobservable Inputs) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Derivatives (net)    
Balance at beginning of period $ 9 $ 15
Purchases, sales, issuances and settlements:    
Purchases 14 29
Settlements (6) (46)
Net transfers Out of Level 3 (7)  
Total (losses) gains included on the Consolidated Balance Sheet (1) 11
Ending balance 9 9
Duke Energy Indiana    
Derivatives (net)    
Balance at beginning of period 8 13
Purchases, sales, issuances and settlements:    
Purchases 12 27
Settlements (4) (42)
Total (losses) gains included on the Consolidated Balance Sheet   10
Ending balance $ 9 $ 8
v3.25.4
Fair Value Measurements (Quantitative Level 3 Fair Value Disclosure) (Details)
$ in Millions
Dec. 31, 2025
USD ($)
$ / MWh
Dec. 31, 2024
USD ($)
$ / MWh
Dec. 31, 2023
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Fair value | $ $ 9 $ 9 $ 15
Duke Energy Ohio | FTR price – per MWh | RTO auction pricing      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Fair value | $   $ 1  
Duke Energy Ohio | FTR price – per MWh | Maximum | RTO auction pricing      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Input measurement (in usd per MWh and usd per MMBtu)   1.13  
Duke Energy Ohio | FTR price – per MWh | Weighted Average | RTO auction pricing      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Input measurement (in usd per MWh and usd per MMBtu)   0.48  
Duke Energy Indiana      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Fair value | $ 9 $ 8 $ 13
Duke Energy Indiana | FTR price – per MWh | RTO auction pricing      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Fair value | $ $ 9 $ 8  
Duke Energy Indiana | FTR price – per MWh | Minimum | RTO auction pricing      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Input measurement (in usd per MWh and usd per MMBtu) (1.00) (0.63)  
Duke Energy Indiana | FTR price – per MWh | Maximum | RTO auction pricing      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Input measurement (in usd per MWh and usd per MMBtu) 14.63 9.24  
Duke Energy Indiana | FTR price – per MWh | Weighted Average | RTO auction pricing      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Input measurement (in usd per MWh and usd per MMBtu) 1.13 0.94  
v3.25.4
Fair Value Measurements (Other Fair Value Disclosures) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Book Value $ 87,212 $ 80,689
Fair Value 79,863 73,440
Unamortized debt discount and premium, net 921 1,000
Duke Energy Carolinas    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Book Value 18,777 17,490
Fair Value 16,764 15,975
Progress Energy    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Book Value 26,848 24,496
Fair Value 24,957 22,548
Duke Energy Progress    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Book Value 13,896 12,504
Fair Value 12,445 11,009
Duke Energy Florida    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Book Value 11,307 10,348
Fair Value 10,720 9,752
Duke Energy Ohio    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Book Value 4,420 4,165
Fair Value 4,151 3,871
Duke Energy Indiana    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Book Value 5,093 4,798
Fair Value 4,646 4,329
Piedmont    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Book Value 4,251 4,003
Fair Value $ 3,960 $ 3,584
v3.25.4
Variable Interest Entities (Narrative) (Details) - USD ($)
 1 Months Ended 12 Months Ended
Dec. 31, 2025
Oct. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Jan. 31, 2025
Apr. 30, 2024
Mar. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Nov. 30, 2025
Apr. 01, 2024
Feb. 29, 2024
Variable Interest Entity [Line Items]                            
Repayments of debt $ 500,000,000 $ 95,000,000 $ 650,000,000 $ 150,000,000                    
Face amount of debt instrument issued 7,005,000,000               $ 7,005,000,000 $ 7,740,000,000        
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569,000,000               4,569,000,000 4,496,000,000        
Accounts payable 5,223,000,000               5,223,000,000 5,436,000,000        
Duke Energy Carolinas                            
Variable Interest Entity [Line Items]                            
Face amount of debt instrument issued 2,243,000,000               2,243,000,000 1,000,000,000        
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 1,530,000,000               1,530,000,000 1,536,000,000        
Accounts payable 1,670,000,000               1,670,000,000 1,809,000,000        
Duke Energy Progress                            
Variable Interest Entity [Line Items]                            
Face amount of debt instrument issued 2,561,000,000               2,561,000,000 677,000,000        
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 1,363,000,000               1,363,000,000 1,341,000,000        
Accounts payable 886,000,000               886,000,000 749,000,000        
Parent                            
Variable Interest Entity [Line Items]                            
Face amount of debt instrument issued 1,750,000,000               1,750,000,000 4,565,000,000        
Duke Energy Ohio                            
Variable Interest Entity [Line Items]                            
Face amount of debt instrument issued 501,000,000               501,000,000 650,000,000        
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 187,000,000               187,000,000 183,000,000        
Accounts payable 333,000,000               333,000,000 313,000,000        
Duke Energy Florida                            
Variable Interest Entity [Line Items]                            
Face amount of debt instrument issued 1,100,000,000               1,100,000,000 173,000,000        
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 847,000,000               847,000,000 745,000,000        
Accounts payable 792,000,000               792,000,000 1,418,000,000        
Duke Energy Indiana                            
Variable Interest Entity [Line Items]                            
Face amount of debt instrument issued 300,000,000               300,000,000 300,000,000        
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 531,000,000               531,000,000 586,000,000        
Accounts payable 360,000,000               360,000,000 257,000,000        
Consolidated VIEs                            
Variable Interest Entity [Line Items]                            
Financial support                 0 0 $ 0      
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669,000,000               669,000,000 494,000,000        
Accounts payable 296,000,000               296,000,000 214,000,000        
Consolidated VIEs | Duke Energy Carolinas | DERF Accounts Receivable Securitization financing | Secured Debt                            
Variable Interest Entity [Line Items]                            
Repayments of debt           $ 500,000,000                
Consolidated VIEs | Duke Energy Progress | DERF Accounts Receivable Securitization financing | Secured Debt                            
Variable Interest Entity [Line Items]                            
Repayments of debt         $ 400,000,000                  
Consolidated VIEs | Duke Energy Florida                            
Variable Interest Entity [Line Items]                            
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669,000,000               669,000,000 494,000,000        
Accounts payable $ 289,000,000               $ 289,000,000 208,000,000        
Consolidated VIEs | Duke Energy Florida | DEFR Accounts Receivable Securitization Facility Maturing April 2024 | Secured Debt                            
Variable Interest Entity [Line Items]                            
Repayments of debt             $ 325,000,000              
Consolidated VIEs | Duke Energy Florida | DERF Accounts Receivable Securitization financing | Secured Debt                            
Variable Interest Entity [Line Items]                            
Repayments of debt           500,000,000                
Consolidated VIEs | Cinergy Receivables [Member]                            
Variable Interest Entity [Line Items]                            
Repayments of debt               $ 350,000,000            
Restricted receivables                           $ 682,000,000
Proceeds received as cash (as a percent) 75.00%               75.00%          
Proceeds received as subordinated note (as a percent) 25.00%               25.00%          
Consolidated VIEs | Cinergy Receivables [Member] | Duke Energy Ohio                            
Variable Interest Entity [Line Items]                            
Restricted receivables                           366,000,000
Consolidated VIEs | Cinergy Receivables [Member] | Duke Energy Indiana                            
Variable Interest Entity [Line Items]                            
Restricted receivables                           $ 316,000,000
Consolidated VIEs | DECNCSF | Duke Energy Carolinas                            
Variable Interest Entity [Line Items]                            
Restricted receivables $ 1,000,000               $ 1,000,000          
Consolidated VIEs | DEPNCSF | Duke Energy Progress                            
Variable Interest Entity [Line Items]                            
Restricted receivables 4,000,000               4,000,000          
Consolidated VIEs | Defr [Member] | Duke Energy Florida                            
Variable Interest Entity [Line Items]                            
Restricted receivables                         $ 459,000,000  
Consolidated VIEs | DERF | Duke Energy Carolinas                            
Variable Interest Entity [Line Items]                            
Restricted receivables           $ 1,081,000,000       $ 1,054,000,000        
Consolidated VIEs | DERF | Duke Energy Progress                            
Variable Interest Entity [Line Items]                            
Restricted receivables         $ 943,000,000                  
Consolidated VIEs | DEPSCSF | Duke Energy Progress                            
Variable Interest Entity [Line Items]                            
Restricted receivables 2,000,000               2,000,000          
Proceeds from issuance of senior secured bonds             $ 177,000,000              
Consolidated VIEs | DECNCSFII | Duke Energy Carolinas                            
Variable Interest Entity [Line Items]                            
Restricted receivables 3,000,000               3,000,000          
Consolidated VIEs | DECNCSFII | Duke Energy Carolinas | Secured Debt                            
Variable Interest Entity [Line Items]                            
Face amount of debt instrument issued     582,000,000                      
Consolidated VIEs | DEPNCSFII | Duke Energy Progress                            
Variable Interest Entity [Line Items]                            
Restricted receivables $ 3,000,000               $ 3,000,000          
Consolidated VIEs | DEPNCSFII | Duke Energy Progress | Secured Debt                            
Variable Interest Entity [Line Items]                            
Face amount of debt instrument issued     $ 461,000,000                      
Consolidated VIEs | DECSCSF | Duke Energy Carolinas | Secured Debt                            
Variable Interest Entity [Line Items]                            
Face amount of debt instrument issued                       $ 561,000,000    
Non-consolidated VIEs | Cinergy Receivables [Member] | Duke Energy Ohio                            
Variable Interest Entity [Line Items]                            
Discount rate (as a percent)                 1.00%          
v3.25.4
Variable Interest Entities (Schedule of Accounts Receivable Securitizations) (Details) - USD ($)
$ in Millions
 1 Months Ended
Dec. 31, 2025
Oct. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Jan. 31, 2025
Apr. 30, 2024
Mar. 31, 2024
Dec. 31, 2024
Apr. 01, 2024
Feb. 29, 2024
Variable Interest Entity [Line Items]                      
Long-Term Debt $ 80,108               $ 76,340    
Repayments of debt 500 $ 95 $ 650 $ 150              
Duke Energy Carolinas                      
Variable Interest Entity [Line Items]                      
Long-Term Debt 17,848               16,669    
Duke Energy Progress                      
Variable Interest Entity [Line Items]                      
Long-Term Debt 13,461               11,371    
Duke Energy Florida                      
Variable Interest Entity [Line Items]                      
Long-Term Debt 10,870               9,814    
Consolidated VIEs                      
Variable Interest Entity [Line Items]                      
Long-Term Debt 3,308               1,842    
Consolidated VIEs | Duke Energy Carolinas                      
Variable Interest Entity [Line Items]                      
Long-Term Debt 1,316               198    
Consolidated VIEs | Duke Energy Carolinas | DERF Accounts Receivable Securitization financing | Secured Debt                      
Variable Interest Entity [Line Items]                      
Repayments of debt           $ 500          
Consolidated VIEs | Duke Energy Progress                      
Variable Interest Entity [Line Items]                      
Long-Term Debt 1,224               809    
Consolidated VIEs | Duke Energy Progress | DERF Accounts Receivable Securitization financing | Secured Debt                      
Variable Interest Entity [Line Items]                      
Repayments of debt         $ 400            
Consolidated VIEs | Duke Energy Florida                      
Variable Interest Entity [Line Items]                      
Long-Term Debt $ 712               773    
Consolidated VIEs | Duke Energy Florida | DEFR Accounts Receivable Securitization Facility Maturing April 2024 | Secured Debt                      
Variable Interest Entity [Line Items]                      
Repayments of debt             $ 325        
Consolidated VIEs | Duke Energy Florida | DERF Accounts Receivable Securitization financing | Secured Debt                      
Variable Interest Entity [Line Items]                      
Repayments of debt           500          
Consolidated VIEs | Cinergy Receivables [Member]                      
Variable Interest Entity [Line Items]                      
Restricted receivables                     $ 682
Repayments of debt               $ 350      
Consolidated VIEs | DERF | Duke Energy Carolinas                      
Variable Interest Entity [Line Items]                      
Long-Term Debt                 500    
Restricted receivables           $ 1,081     1,054    
Consolidated VIEs | DERF | Duke Energy Progress                      
Variable Interest Entity [Line Items]                      
Restricted receivables         $ 943            
Consolidated VIEs | DEPR | Duke Energy Progress                      
Variable Interest Entity [Line Items]                      
Long-Term Debt                 400    
Restricted receivables                 $ 835    
Consolidated VIEs | Defr [Member] | Duke Energy Florida                      
Variable Interest Entity [Line Items]                      
Restricted receivables                   $ 459  
v3.25.4
Variable Interest Entities (Consolidated VIEs) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Variable Interest Entity [Line Items]    
Regulatory Assets: Current $ 1,934 $ 2,739
Current Assets: Other 526 695
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Other Noncurrent Assets: Other 4,167 3,507
Interest accrued 922 854
Current maturities of long-term debt 7,104 4,349
Current Liabilities: Other 2,265 2,080
Long-Term Debt 80,108 76,340
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569 4,496
Accounts payable 5,223 5,436
Duke Energy Florida    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 102 1,022
Current Assets: Other 52 227
Other Noncurrent Assets: Regulatory assets 2,106 2,064
Other Noncurrent Assets: Other 561 465
Interest accrued 87 86
Current maturities of long-term debt 437 534
Current Liabilities: Other 375 342
Long-Term Debt 10,870 9,814
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 847 745
Accounts payable 792 1,418
Duke Energy Carolinas    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 730 685
Current Assets: Other 75 52
Other Noncurrent Assets: Regulatory assets 4,502 4,199
Other Noncurrent Assets: Other 1,304 1,127
Interest accrued 214 201
Current maturities of long-term debt 629 521
Current Liabilities: Other 621 541
Long-Term Debt 17,848 16,669
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 1,530 1,536
Accounts payable 1,670 1,809
Duke Energy Progress    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 652 626
Current Assets: Other 95 104
Other Noncurrent Assets: Regulatory assets 4,543 4,555
Other Noncurrent Assets: Other 781 724
Interest accrued 145 122
Current maturities of long-term debt 285 983
Current Liabilities: Other 370 427
Long-Term Debt 13,461 11,371
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 1,363 1,341
Accounts payable 886 749
Consolidated VIEs    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 204 120
Current Assets: Other 88 90
Other Noncurrent Assets: Regulatory assets 3,108 1,705
Current maturities of long-term debt 118 1,012
Long-Term Debt 3,308 1,842
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Accounts payable 296 214
Consolidated VIEs | Duke Energy Florida    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 62 61
Current Assets: Other 34 35
Other Noncurrent Assets: Regulatory assets 682 741
Current maturities of long-term debt 61 59
Long-Term Debt 712 773
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Accounts payable 289 208
Consolidated VIEs | Duke Energy Carolinas    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 72 12
Current Assets: Other 12 9
Other Noncurrent Assets: Regulatory assets 1,257 189
Current maturities of long-term debt 16 510
Long-Term Debt 1,316 198
Consolidated VIEs | Duke Energy Progress    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 70 47
Current Assets: Other 38 40
Other Noncurrent Assets: Regulatory assets 1,169 775
Current maturities of long-term debt 41 443
Long-Term Debt 1,224 809
Consolidated VIEs | DEFPF | Duke Energy Florida    
Variable Interest Entity [Line Items]    
Receivables of VIEs 3  
Regulatory Assets: Current 62 61
Current Assets: Other 34 35
Other Noncurrent Assets: Regulatory assets 682 741
Other Noncurrent Assets: Other 7 7
Current maturities of long-term debt 61 59
Current Liabilities: Other 7 8
Long-Term Debt 712 773
Consolidated VIEs | DECNCSF | Duke Energy Carolinas    
Variable Interest Entity [Line Items]    
Receivables of VIEs 1  
Regulatory Assets: Current 12 12
Current Assets: Other 9 9
Other Noncurrent Assets: Regulatory assets 179 189
Other Noncurrent Assets: Other 1 1
Current maturities of long-term debt 11 10
Current Liabilities: Other   2
Long-Term Debt 188 198
Consolidated VIEs | DECNCSFII | Duke Energy Carolinas    
Variable Interest Entity [Line Items]    
Receivables of VIEs 3  
Regulatory Assets: Current 29  
Current Assets: Other 3  
Other Noncurrent Assets: Regulatory assets 550  
Other Noncurrent Assets: Other 3  
Current maturities of long-term debt 2  
Long-Term Debt 575  
Consolidated VIEs | DECSCSF | Duke Energy Carolinas    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 31  
Other Noncurrent Assets: Regulatory assets 528  
Other Noncurrent Assets: Other 3  
Current maturities of long-term debt 3  
Long-Term Debt 553  
Consolidated VIEs | DEPNCSF | Duke Energy Progress    
Variable Interest Entity [Line Items]    
Receivables of VIEs 4  
Regulatory Assets: Current 39 39
Current Assets: Other 30 27
Other Noncurrent Assets: Regulatory assets 583 620
Other Noncurrent Assets: Other 4 4
Current maturities of long-term debt 35 34
Current Liabilities: Other   10
Long-Term Debt 611 646
Consolidated VIEs | DEPNCSFII | Duke Energy Progress    
Variable Interest Entity [Line Items]    
Receivables of VIEs 3  
Regulatory Assets: Current 23  
Current Assets: Other 3  
Other Noncurrent Assets: Regulatory assets 435  
Other Noncurrent Assets: Other 2  
Current maturities of long-term debt 1  
Long-Term Debt 455  
Consolidated VIEs | DEPSCSF | Duke Energy Progress    
Variable Interest Entity [Line Items]    
Receivables of VIEs 2  
Regulatory Assets: Current 8 8
Current Assets: Other 5 13
Other Noncurrent Assets: Regulatory assets 151 155
Other Noncurrent Assets: Other 1 1
Current maturities of long-term debt 5 9
Current Liabilities: Other   7
Long-Term Debt $ 158 $ 163
v3.25.4
Variable Interest Entities (Sales and Cash Flows) (Details) - Non-consolidated VIEs - Cinergy Receivables [Member] - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Duke Energy Ohio    
Variable Interest Entity [Line Items]    
Receivables sold $ 474 $ 2,578
Loss recognized on sale 7 34
Cash proceeds from receivables sold 478 2,591
Collection fees received   1
Return received on retained interests 4 19
Duke Energy Indiana    
Variable Interest Entity [Line Items]    
Receivables sold 473 3,223
Loss recognized on sale 6 39
Cash proceeds from receivables sold 523 3,294
Collection fees received   2
Return received on retained interests $ 4 $ 25
v3.25.4
Revenue (Remaining Performance Obligations) (Details)
$ in Millions
Dec. 31, 2025
USD ($)
Duke Energy Carolinas  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 36
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 12
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 12
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 12
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period
Progress Energy  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 155
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 43
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 43
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 13
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 13
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 14
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 29
Revenue, remaining performance obligation, expected timing of satisfaction, period
Duke Energy Progress  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 45
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 6
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 6
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 6
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 6
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 7
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 14
Revenue, remaining performance obligation, expected timing of satisfaction, period
Duke Energy Florida  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 110
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 37
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 37
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 7
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 7
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 7
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 15
Revenue, remaining performance obligation, expected timing of satisfaction, period
Duke Energy Indiana  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 37
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 17
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 15
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 5
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period
Piedmont  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 342
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 54
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 48
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 45
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 44
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 42
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 109
Revenue, remaining performance obligation, expected timing of satisfaction, period
v3.25.4
Revenue (Disaggregation of Revenue) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers $ 31,741 $ 30,050 $ 28,674
Other revenue sources 496 307 386
Total operating revenues 32,237 30,357 29,060
Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 28,863 27,769 26,546
Total operating revenues 29,297 28,020 26,846
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 13,756 12,901 12,098
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 8,337 8,207 7,895
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 3,423 3,427 3,416
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,402 2,205 2,175
Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 945 1,029 962
Gas Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,850 2,243 2,091
Total operating revenues 2,912 2,299 2,177
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,596 1,320 1,226
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 808 639 605
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 190 158 141
Gas Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 256 126 119
Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 28 38 37
Duke Energy Carolinas      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 9,501 9,615 8,223
Other revenue sources 212 103 65
Total operating revenues 9,713 9,718 8,288
Duke Energy Carolinas | Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 9,501 9,615 8,223
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 4,124 4,150 3,409
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,885 3,080 2,670
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,422 1,488 1,334
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 621 547 492
Duke Energy Carolinas | Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 449 350 318
Progress Energy      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 14,302 13,464 13,355
Other revenue sources 207 169 189
Total operating revenues 14,509 13,633 13,544
Progress Energy | Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 14,302 13,464 13,355
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 7,067 6,592 6,510
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 3,825 3,718 3,762
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,065 1,066 1,105
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,475 1,414 1,388
Progress Energy | Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 870 674 590
Duke Energy Progress      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 7,312 6,979 6,426
Other revenue sources 74 38 62
Total operating revenues 7,386 7,017 6,488
Duke Energy Progress | Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 7,312 6,979 6,426
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,965 2,872 2,540
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,732 1,754 1,588
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 750 742 733
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,353 1,268 1,240
Duke Energy Progress | Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 512 343 325
Duke Energy Florida      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 6,990 6,485 6,929
Other revenue sources 115 110 107
Total operating revenues 7,105 6,595 7,036
Duke Energy Florida | Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 6,990 6,485 6,929
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 4,102 3,720 3,970
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,093 1,964 2,174
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 315 324 372
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 122 146 148
Duke Energy Florida | Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 358 331 265
Duke Energy Ohio      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,767 2,527 2,468
Other revenue sources 30 18 39
Total operating revenues 2,797 2,545 2,507
Duke Energy Ohio | Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,021 1,888 1,829
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,116 1,009 947
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 603 590 552
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 142 149 191
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 92 51 46
Duke Energy Ohio | Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 68 89 93
Duke Energy Ohio | Gas Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 746 639 639
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 496 427 435
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 181 153 154
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 44 33 26
Duke Energy Ohio | Gas Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 25 26 24
Duke Energy Indiana      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 3,511 2,992 3,335
Other revenue sources 33 48 64
Total operating revenues 3,544 3,040 3,399
Duke Energy Indiana | Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 3,511 2,992 3,335
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,450 1,149 1,233
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,024 818 911
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 794 724 786
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 218 194 248
Duke Energy Indiana | Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 25 107 157
Piedmont      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,162 1,637 1,483
Other revenue sources 75 92 145
Total operating revenues 2,237 1,729 1,628
Piedmont | Gas Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,162 1,637 1,483
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,100 893 792
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 627 486 450
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 146 125 115
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 34 33 31
Piedmont | Gas Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers $ 255 $ 100 $ 95
v3.25.4
Revenue (Reserve for Credit Losses for Trade and Other Receivables) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance $ 207 $ 202 $ 213
Write-Offs (164) (131) (162)
Credit Loss Expense 106 97 99
Other Adjustments 45 39 52
Ending balance 194 207 202
Duke Energy Carolinas      
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 69 56 68
Write-Offs (52) (55) (71)
Credit Loss Expense 26 39 35
Other Adjustments 12 29 24
Ending balance 55 69 56
Progress Energy      
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 73 74 81
Write-Offs (62) (73) (84)
Credit Loss Expense 39 51 48
Other Adjustments 15 21 29
Ending balance 65 73 74
Duke Energy Progress      
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 44 44 44
Write-Offs (37) (45) (41)
Credit Loss Expense 16 25 12
Other Adjustments 15 20 29
Ending balance 38 44 44
Duke Energy Florida      
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 29 31 36
Write-Offs (25) (28) (42)
Credit Loss Expense 23 26 37
Ending balance 27 29 31
Duke Energy Ohio      
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 43 9 6
Write-Offs (21)    
Credit Loss Expense 15 3 3
Other Adjustments 14 31  
Ending balance 51 43 9
Duke Energy Indiana      
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 15 5 4
Write-Offs (13)    
Credit Loss Expense 13 2 1
Other Adjustments   8  
Ending balance 15 15 5
Piedmont      
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 7 8 11
Write-Offs (17) (3) (8)
Credit Loss Expense 14 2 5
Other Adjustments 2    
Ending balance $ 6 $ 7 $ 8
v3.25.4
Stockholders' Equity (Earnings Per Share Data) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Class of Stock [Line Items]      
Net Income available to Duke Energy common stockholders $ 4,912 $ 4,402 $ 2,735
Net (loss) income from discontinued operations attributable to Duke Energy Corporation 1 7 (1,391)
Accumulated preferred stock dividends adjustment 0 14 0
Less: Impact of participating securities 6 6 6
Income from continuing operations available to Duke Energy common stockholders 4,905 4,403 4,120
Income (Loss) From Discontinued Operations, net of tax 1 10 (1,455)
Add: Loss (Income) attributable to NCI $ 0 $ (3) $ 64
Weighted average common shares outstanding – basic (in shares) 777 772 771
Weighted average common shares outstanding – diluted (in shares) 777 772 771
EPS from continuing operations available to Duke Energy common stockholders      
Basic (usd per share) $ 6.31 $ 5.70 $ 5.35
Diluted (usd per share) 6.31 5.70 5.35
Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders      
Basic (usd per share) 0 0.01 (1.81)
Diluted (usd per share) $ 0 $ 0.01 $ (1.81)
Potentially dilutive items excluded from the calculation (in shares) 2 2 2
Dividends declared per share (usd per share) $ 4.22 $ 4.14 $ 4.06
Series A Preferred Stock      
Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders      
Dividends declared on preferred stock (usd per share) $ 1.437 1.437 1.437
Cumulative annual dividend rate (as a percent) 5.75%    
Liquidation preference per share (in usd per share) $ 25    
Series B Preferred Stock      
Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders      
Dividends declared on preferred stock (usd per share) $ 0 $ 48.750 $ 48.750
Cumulative annual dividend rate (as a percent) 4.875%    
v3.25.4
Stockholders' Equity (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 12 Months Ended
Sep. 16, 2024
Nov. 30, 2022
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Jun. 15, 2024
Equity [Abstract]            
Maximum value of shares to be issued under ATM program   $ 1,500        
Class of Stock [Line Items]            
Maximum value of shares to be issued under ATM program   $ 1,500        
Redemption price (in usd per share)           $ 25
Less: Preferred Redemption Costs     $ 0 $ 16 $ 0  
Settlement of equity forwards (in shares)       2,900,000    
Settlement of equity forwards, net cash proceeds       $ 297    
Equity Forwards, Fifth Tranche            
Class of Stock [Line Items]            
Settlement of equity forwards, net cash proceeds       $ 74    
Shares Priced (shares)       671,216    
Equity forwards            
Class of Stock [Line Items]            
Settlement of equity forwards, net cash proceeds       $ 371    
Shares Priced (shares)     3,600,000      
If net share settlement was elected            
Class of Stock [Line Items]            
Shares Priced (shares)     4,238,007      
Series A Preferred Stock            
Class of Stock [Line Items]            
Liquidation preference per share (in usd per share)     $ 25      
Series B Preferred Stock            
Class of Stock [Line Items]            
Redemption price (in usd per share) $ 1,000          
Less: Preferred Redemption Costs $ 16          
Shares redeemed (in shares) 1,000,000          
Redemption amount $ 1,000          
Difference between carrying value and consideration paid 11          
Excise tax liability $ 5          
v3.25.4
Stockholders' Equity - Equity Issuances Pursuant to Forward Contracts (Details) - If net share settlement was elected
 12 Months Ended
Dec. 31, 2025
$ / shares
shares
Forward Contract Indexed to Issuer's Equity [Line Items]  
Shares Priced (shares) 4,238,007
Equity Forwards, First Tranche  
Forward Contract Indexed to Issuer's Equity [Line Items]  
Shares Priced (shares) 1,710,979
Forward contract indexed to issuer's equity, forward rate per share (in dollars per share) | $ / shares $ 116.02
Equity Forwards, Second Tranche  
Forward Contract Indexed to Issuer's Equity [Line Items]  
Shares Priced (shares) 1,262,618
Forward contract indexed to issuer's equity, forward rate per share (in dollars per share) | $ / shares $ 117.94
Equity Forwards, Third Tranche  
Forward Contract Indexed to Issuer's Equity [Line Items]  
Shares Priced (shares) 1,264,410
Forward contract indexed to issuer's equity, forward rate per share (in dollars per share) | $ / shares $ 117.79
v3.25.4
Severance (Narrative) (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
employee
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Restructuring and Related Activities [Abstract]      
Severance expense | $ $ (8) $ (28) $ 102
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]     Operation, maintenance and other
Number of employees | employee 682    
v3.25.4
Severance (Expenses) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]      
Severance expense $ (8) $ (28) $ 102
Operation, maintenance and other      
Restructuring Cost and Reserve [Line Items]      
Severance expense     97
Duke Energy Carolinas      
Restructuring Cost and Reserve [Line Items]      
Severance expense (2) (11) 53
Progress Energy      
Restructuring Cost and Reserve [Line Items]      
Severance expense (5) (9) 33
Duke Energy Progress      
Restructuring Cost and Reserve [Line Items]      
Severance expense (2) (5) 21
Duke Energy Florida      
Restructuring Cost and Reserve [Line Items]      
Severance expense $ (3) (4) 12
Duke Energy Ohio      
Restructuring Cost and Reserve [Line Items]      
Severance expense   (2) 3
Duke Energy Indiana      
Restructuring Cost and Reserve [Line Items]      
Severance expense   (4) 6
Piedmont      
Restructuring Cost and Reserve [Line Items]      
Severance expense   $ (2) $ 4
v3.25.4
Severance (Rollforward) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Restructuring Reserve [Roll Forward]    
Balance, beginning of period $ 19 $ 102
Provision/Adjustments (8) (28)
Cash Reductions (11) (55)
Balance, end of period   19
Duke Energy Carolinas    
Restructuring Reserve [Roll Forward]    
Balance, beginning of period 8 35
Provision/Adjustments (3) (6)
Cash Reductions (5) (21)
Balance, end of period   8
Progress Energy    
Restructuring Reserve [Roll Forward]    
Balance, beginning of period 2 16
Provision/Adjustments (1) (3)
Cash Reductions (1) (11)
Balance, end of period   2
Duke Energy Progress    
Restructuring Reserve [Roll Forward]    
Balance, beginning of period 1 8
Provision/Adjustments (1) (1)
Cash Reductions   (6)
Balance, end of period   1
Duke Energy Florida    
Restructuring Reserve [Roll Forward]    
Balance, beginning of period 1 8
Provision/Adjustments   (2)
Cash Reductions $ (1) (5)
Balance, end of period   1
Duke Energy Ohio    
Restructuring Reserve [Roll Forward]    
Balance, beginning of period   1
Provision/Adjustments   (1)
Duke Energy Indiana    
Restructuring Reserve [Roll Forward]    
Balance, beginning of period   4
Provision/Adjustments   (3)
Cash Reductions   (1)
Piedmont    
Restructuring Reserve [Roll Forward]    
Balance, beginning of period   2
Provision/Adjustments   (1)
Cash Reductions   $ (1)
v3.25.4
Stock-Based Compensation (Narrative) (Details) - USD ($)
shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares reserved for awards to employees and outside directors (in shares) 15    
RSU awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total grant date fair value of shares vested $ 59 $ 55 $ 52
Unrecognized compensation cost $ 38    
Unrecognized compensation cost, period of recognition (in months) 23 months    
RSU awards | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 3 years    
Performance awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 3 years    
Total grant date fair value of shares vested $ 38 $ 30 $ 31
Unrecognized compensation cost $ 26    
Unrecognized compensation cost, period of recognition (in months) 22 months    
Risk free interest rate (as a percent) 4.04%    
Expected volatility rate (as a percent) 18.80%    
Performance awards | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percent (as a percent) 0.00%    
Performance awards | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percent (as a percent) 200.00%    
v3.25.4
Stock-Based Compensation (Schedule of Stock-Based Compensation Expense) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total expense recognized $ 74 $ 70 $ 71
Pretax stock-based compensation cost 102 96 97
Stock-based compensation costs capitalized 7 6 6
Stock-based compensation expense 95 90 91
Tax benefit associated with stock-based compensation expense 21 20 20
RSU awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Pretax stock-based compensation cost 58 49 54
Performance awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Pretax stock-based compensation cost 44 47 43
Duke Energy Carolinas      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total expense recognized 27 25 25
Progress Energy      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total expense recognized 29 28 28
Duke Energy Progress      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total expense recognized 18 17 17
Duke Energy Florida      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total expense recognized 11 11 11
Duke Energy Ohio      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total expense recognized 6 5 5
Duke Energy Indiana      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total expense recognized 8 7 7
Piedmont      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total expense recognized $ 4 $ 4 $ 4
v3.25.4
Stock-Based Compensation (Summary of Stock Awards Outstanding) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
RSU awards      
Schedule Of Shares Awarded [Abstract]      
Shares granted (in thousands) 564 598 670
Fair value (in millions) $ 66 $ 59 $ 65
Shares      
Outstanding at beginning of period (in shares) 1,059    
Granted (in shares) 564 598 670
Vested (in shares) (602)    
Forfeited (in shares) (59)    
Outstanding at end of period (in shares) 962 1,059  
Stock awards expected to vest (in shares) 897    
Weighted Average Grant Date Fair Value      
Weighted average fair value at beginning of period (usd per share) $ 98    
Granted (usd per share) 117    
Vested (usd per share) 99    
Forfeited (usd per share) 109    
Weighted average fair value at end of period (usd per share) 108 $ 98  
Weighted average fair value of awards expected to vest (usd per share) $ 108    
Performance awards      
Schedule Of Shares Awarded [Abstract]      
Shares granted (in thousands) 338 440 422
Fair value (in millions) $ 41 $ 42 $ 42
Shares      
Outstanding at beginning of period (in shares) 1,187    
Granted (in shares) 338 440 422
Vested (in shares) (382)    
Forfeited (in shares) (36)    
Outstanding at end of period (in shares) 1,107 1,187  
Stock awards expected to vest (in shares) 1,079    
Weighted Average Grant Date Fair Value      
Weighted average fair value at beginning of period (usd per share) $ 98    
Granted (usd per share) 122    
Vested (usd per share) 99    
Forfeited (usd per share) 116    
Weighted average fair value at end of period (usd per share) 104 $ 98  
Weighted average fair value of awards expected to vest (usd per share) $ 104    
v3.25.4
Employee Benefit Plans (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Jan. 01, 2026
Defined Benefit Plan Disclosure [Line Items]        
Maximum years of participation (in years) 35 years      
Matching contribution (as a percent) 100.00%      
Eligible pay (as a percent) 6.00%      
Additional contribution for employees not participating in defined pension plans (as a percent) 4.00%      
Vesting period (in years) 3 years      
Minimum        
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Average Earnings, Period 3 years      
Maximum        
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Average Earnings, Period 5 years      
Master Trust        
Defined Benefit Plan Disclosure [Line Items]        
Target allocation (as a percent) 100.00%      
Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Actual return on plan assets $ 847 $ 270    
Average remaining service period (in years) 11 years      
Accumulated Benefit Obligation at measurement date $ 5,839 5,948    
Projected benefit obligation 5,871 5,980 $ 6,299  
Benefits paid 624 645    
Employer contributions 100 $ 100 $ 100  
Pension Plan | Nonqualified Plan        
Defined Benefit Plan Disclosure [Line Items]        
Accumulated Benefit Obligation at measurement date 187      
Projected benefit obligation 187      
Benefits paid 29      
Employer contributions $ 29      
Pension Plan | Minimum        
Defined Benefit Plan Disclosure [Line Items]        
Expected long-term rate of return on plan assets (as a percent) 8.50% 8.50% 6.50%  
Pension Plan | Maximum        
Defined Benefit Plan Disclosure [Line Items]        
Expected long-term rate of return on plan assets (as a percent) 7.00% 7.00% 8.25%  
Pension Plan | Master Trust        
Defined Benefit Plan Disclosure [Line Items]        
Master trust allocation (as a percent) 98.00% 98.00%    
Expected long-term rate of return on plan assets (as a percent) 7.00%      
Other Post-Retirement Benefit Plans        
Defined Benefit Plan Disclosure [Line Items]        
Actual return on plan assets $ 18 $ 7    
Average remaining service period (in years) 7 years      
Projected benefit obligation $ 321 334 $ 347  
Benefits paid 35 $ 37    
Employer contributions $ 26      
Other Post-Retirement Benefit Plans | Minimum        
Defined Benefit Plan Disclosure [Line Items]        
Expected long-term rate of return on plan assets (as a percent) 2.50% 2.75% 4.00%  
Other Post-Retirement Benefit Plans | Maximum        
Defined Benefit Plan Disclosure [Line Items]        
Expected long-term rate of return on plan assets (as a percent) 8.50% 8.50% 8.25%  
Other Post-Retirement Benefit Plans | Master Trust        
Defined Benefit Plan Disclosure [Line Items]        
Master trust allocation (as a percent) 2.00% 2.00%    
Expected long-term rate of return on plan assets (as a percent) 8.50%      
Target allocation (as a percent) 100.00%      
Duke Energy Carolinas | Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Actual return on plan assets $ 214 $ 73    
Average remaining service period (in years) 11 years      
Accumulated Benefit Obligation at measurement date $ 1,408 1,444    
Projected benefit obligation 1,408 1,444 $ 1,514  
Benefits paid 181 177    
Employer contributions 27 26 26  
Duke Energy Carolinas | Pension Plan | Nonqualified Plan        
Defined Benefit Plan Disclosure [Line Items]        
Accumulated Benefit Obligation at measurement date 7      
Projected benefit obligation 7      
Benefits paid 1      
Employer contributions 1      
Duke Energy Carolinas | Other Post-Retirement Benefit Plans        
Defined Benefit Plan Disclosure [Line Items]        
Actual return on plan assets $ 10 4    
Average remaining service period (in years) 7 years      
Projected benefit obligation $ 57 63 69  
Benefits paid 8 8    
Employer contributions 3      
Progress Energy | Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Actual return on plan assets $ 323 98    
Average remaining service period (in years) 9 years      
Accumulated Benefit Obligation at measurement date $ 1,846 1,861    
Projected benefit obligation 1,859 1,875 1,990  
Benefits paid 186 198    
Employer contributions 23 23 22  
Progress Energy | Pension Plan | Nonqualified Plan        
Defined Benefit Plan Disclosure [Line Items]        
Accumulated Benefit Obligation at measurement date 69      
Projected benefit obligation 69      
Benefits paid 7      
Employer contributions $ 7      
Progress Energy | Other Post-Retirement Benefit Plans        
Defined Benefit Plan Disclosure [Line Items]        
Average remaining service period (in years) 6 years      
Projected benefit obligation $ 142 146 146  
Benefits paid 14 15    
Employer contributions 13      
Duke Energy Progress | Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Actual return on plan assets $ 145 46    
Average remaining service period (in years) 9 years      
Accumulated Benefit Obligation at measurement date $ 813 838    
Projected benefit obligation 814 838 911  
Benefits paid 103 111    
Employer contributions 14 14 13  
Duke Energy Progress | Pension Plan | Nonqualified Plan        
Defined Benefit Plan Disclosure [Line Items]        
Accumulated Benefit Obligation at measurement date 22      
Projected benefit obligation 22      
Benefits paid 2      
Employer contributions $ 2      
Duke Energy Progress | Other Post-Retirement Benefit Plans        
Defined Benefit Plan Disclosure [Line Items]        
Average remaining service period (in years) 5 years      
Projected benefit obligation $ 86 87 84  
Benefits paid 8 6    
Employer contributions 8      
Duke Energy Florida | Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Actual return on plan assets $ 176 53    
Average remaining service period (in years) 9 years      
Accumulated Benefit Obligation at measurement date $ 1,023 1,013    
Projected benefit obligation 1,037 1,027 1,069  
Benefits paid 81 88    
Employer contributions 10 9 9  
Duke Energy Florida | Pension Plan | Nonqualified Plan        
Defined Benefit Plan Disclosure [Line Items]        
Accumulated Benefit Obligation at measurement date 25      
Projected benefit obligation 25      
Benefits paid 3      
Employer contributions $ 3      
Duke Energy Florida | Other Post-Retirement Benefit Plans        
Defined Benefit Plan Disclosure [Line Items]        
Average remaining service period (in years) 7 years      
Projected benefit obligation $ 58 60 60  
Benefits paid 6 6    
Employer contributions 6      
Duke Energy Indiana | Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Actual return on plan assets $ 52 17    
Average remaining service period (in years) 13 years      
Accumulated Benefit Obligation at measurement date $ 469 466    
Projected benefit obligation 474 471 496  
Benefits paid 50 41    
Employer contributions 8 8 8  
Duke Energy Indiana | Pension Plan | Nonqualified Plan        
Defined Benefit Plan Disclosure [Line Items]        
Accumulated Benefit Obligation at measurement date 1      
Projected benefit obligation $ 1      
Duke Energy Indiana | Other Post-Retirement Benefit Plans        
Defined Benefit Plan Disclosure [Line Items]        
Average remaining service period (in years) 6 years      
Projected benefit obligation $ 19 20 24  
Benefits paid 3 3    
Employer contributions 3      
Piedmont | Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Actual return on plan assets $ 28 10    
Average remaining service period (in years) 9 years      
Accumulated Benefit Obligation at measurement date $ 176 181    
Projected benefit obligation 176 181 175  
Benefits paid 16 12    
Employer contributions 3 3 3  
Piedmont | Pension Plan | Nonqualified Plan        
Defined Benefit Plan Disclosure [Line Items]        
Accumulated Benefit Obligation at measurement date 2      
Projected benefit obligation 2      
Piedmont | Other Post-Retirement Benefit Plans        
Defined Benefit Plan Disclosure [Line Items]        
Actual return on plan assets $ 4 3    
Average remaining service period (in years) 6 years      
Projected benefit obligation $ 15 15 15  
Benefits paid 2 1    
Employer contributions 1      
Duke Energy Ohio | Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Actual return on plan assets $ 31 11    
Average remaining service period (in years) 14 years      
Accumulated Benefit Obligation at measurement date $ 300 304    
Projected benefit obligation 305 309 325  
Benefits paid 26 33    
Employer contributions 6 5 5  
Duke Energy Ohio | Pension Plan | Nonqualified Plan        
Defined Benefit Plan Disclosure [Line Items]        
Accumulated Benefit Obligation at measurement date 2      
Projected benefit obligation 2      
Duke Energy Ohio | Other Post-Retirement Benefit Plans        
Defined Benefit Plan Disclosure [Line Items]        
Actual return on plan assets $ 1      
Average remaining service period (in years) 6 years      
Projected benefit obligation $ 17 18 $ 19  
Benefits paid 2 2    
Employer contributions $ 2      
RCBP | Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Average remaining service period (in years) 9 years      
DELPP | Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Average remaining service period (in years) 15 years      
Duke Energy Retirement Cash Balance Plan        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   72    
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense)        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   12    
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Carolinas        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   3    
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Progress Energy        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   5    
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Progress        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   5    
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Piedmont        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   1    
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Ohio        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   2    
Regulatory Assets, Noncurrent | Noncurrent assets        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   60    
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Carolinas        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   31    
Regulatory Assets, Noncurrent | Noncurrent assets | Progress Energy        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   23    
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Progress        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   16    
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Florida        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   7    
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Indiana        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   3    
Regulatory Assets, Noncurrent | Noncurrent assets | Piedmont        
Defined Benefit Plan Disclosure [Line Items]        
Settlement charge   $ 4    
Subsequent Event | Pension Plan | Master Trust | Liability Hedging Assets        
Defined Benefit Plan Disclosure [Line Items]        
Target allocation (as a percent)       45.00%
Subsequent Event | Pension Plan | Master Trust | Return Seeking Assets        
Defined Benefit Plan Disclosure [Line Items]        
Target allocation (as a percent)       55.00%
Subsequent Event | Other Post-Retirement Benefit Plans | Master Trust | Liability Hedging Assets        
Defined Benefit Plan Disclosure [Line Items]        
Target allocation (as a percent)       65.00%
Subsequent Event | Other Post-Retirement Benefit Plans | Master Trust | Return Seeking Assets        
Defined Benefit Plan Disclosure [Line Items]        
Target allocation (as a percent)       35.00%
v3.25.4
Employee Benefit Plans (Contributions to Defined Benefit Pension Plans) (Details) - Pension Plan - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions $ 100 $ 100 $ 100
Duke Energy Carolinas      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 27 26 26
Progress Energy      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 23 23 22
Duke Energy Progress      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 14 14 13
Duke Energy Florida      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 10 9 9
Duke Energy Ohio      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 6 5 5
Duke Energy Indiana      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 8 8 8
Piedmont      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions $ 3 $ 3 $ 3
v3.25.4
Employee Benefit Plans (Components of Net Periodic Pension Costs) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension Plan      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost $ 100 $ 107  
Interest cost on projected benefit obligation 329 325  
Amortization of regulatory asset 2 2 $ 3
Pension Plan | Duke Energy Carolinas      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost 34 36  
Interest cost on projected benefit obligation 79 78 84
Expected return on plan assets (153) (161) (160)
Amortization of actuarial loss 15 8 2
Amortization of prior service credit (1) (1) (1)
Amortization of settlement charges 12 12 9
Net periodic pension costs (12) (27) (28)
Service cost 36 37 38
Pension Plan | Progress Energy      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost 28 30  
Interest cost on projected benefit obligation 103 103 107
Expected return on plan assets (220) (217) (198)
Amortization of actuarial loss 19 10 4
Amortization of settlement charges 7 10 5
Net periodic pension costs (61) (62) (49)
Service cost 30 32 33
Pension Plan | Duke Energy Progress      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost 17 18  
Interest cost on projected benefit obligation 46 47 49
Expected return on plan assets (98) (99) (93)
Amortization of actuarial loss 10 6 2
Amortization of settlement charges 5 9 3
Net periodic pension costs (19) (18) (20)
Service cost 18 19 19
Pension Plan | Duke Energy Florida      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost 11 12  
Interest cost on projected benefit obligation 57 56 57
Expected return on plan assets (120) (116) (104)
Amortization of actuarial loss 9 5 2
Amortization of settlement charges 2 2 1
Net periodic pension costs (40) (40) (31)
Service cost 12 13 13
Pension Plan | Duke Energy Ohio      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost 2 3  
Interest cost on projected benefit obligation 17 17 18
Expected return on plan assets (24) (25) (24)
Amortization of actuarial loss 2 1  
Amortization of settlement charges   2  
Net periodic pension costs (2) (2) (3)
Amortization of regulatory asset 1 1 1
Service cost 3 3 3
Pension Plan | Duke Energy Indiana      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost 5 6  
Interest cost on projected benefit obligation 26 26 27
Expected return on plan assets (40) (42) (40)
Amortization of actuarial loss 5 4 2
Amortization of prior service credit (2) (2) (2)
Amortization of settlement charges 2 2 1
Net periodic pension costs (3) (6) (6)
Service cost 6 6 6
Pension Plan | Piedmont      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost 3 4  
Interest cost on projected benefit obligation 10 9 9
Expected return on plan assets (20) (20) (20)
Amortization of actuarial loss 4 3  
Amortization of prior service credit (7) (7) (7)
Amortization of settlement charges 4 5 4
Net periodic pension costs (5) (6) (10)
Service cost 4 4 4
Pension Plan | Parent      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Interest cost on projected benefit obligation 329 325 344
Expected return on plan assets (597) (613) (588)
Amortization of actuarial loss 61 36 10
Amortization of prior service credit (13) (13) (14)
Amortization of settlement charges 25 32 19
Net periodic pension costs (88) (119) (112)
Service cost 107 114 117
Other Post-Retirement Benefit Plans      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost 2 2 2
Interest cost on projected benefit obligation 18 17 22
Expected return on plan assets (12) (11) (11)
Amortization of actuarial loss (3) (6) (6)
Amortization of prior service credit (21) (21) (23)
Net periodic pension costs (16) (19) (16)
Amortization of regulatory asset 3 4 4
Regulatory adjustment of net periodic post-retirement benefit costs 5    
Other Post-Retirement Benefit Plans | Duke Energy Carolinas      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost     1
Interest cost on projected benefit obligation 3 3 5
Expected return on plan assets (8) (8) (7)
Amortization of actuarial loss (1) (2) (3)
Amortization of prior service credit (4) (4) (5)
Net periodic pension costs (10) (11) (9)
Other Post-Retirement Benefit Plans | Progress Energy      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Interest cost on projected benefit obligation 8 7 9
Amortization of actuarial loss 5 8 8
Amortization of prior service credit (11) (11) (11)
Net periodic pension costs 2 4 6
Other Post-Retirement Benefit Plans | Duke Energy Progress      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Interest cost on projected benefit obligation 5 4 5
Amortization of actuarial loss 4 6 5
Amortization of prior service credit (6) (6) (6)
Net periodic pension costs 3 4 4
Other Post-Retirement Benefit Plans | Duke Energy Florida      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Interest cost on projected benefit obligation 3 3 4
Amortization of actuarial loss 2 2 2
Amortization of prior service credit (5) (5) (5)
Net periodic pension costs     1
Other Post-Retirement Benefit Plans | Duke Energy Ohio      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Interest cost on projected benefit obligation 1 1 1
Amortization of actuarial loss (1) (2) (2)
Net periodic pension costs   (1) (1)
Amortization of regulatory asset 1 1 1
Other Post-Retirement Benefit Plans | Duke Energy Indiana      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Interest cost on projected benefit obligation 1 1 1
Amortization of actuarial loss (1) (4) (3)
Amortization of prior service credit (5) (5) (5)
Net periodic pension costs (5) (8) (7)
Regulatory adjustment of net periodic post-retirement benefit costs 5    
Other Post-Retirement Benefit Plans | Piedmont      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Interest cost on projected benefit obligation 1 1 1
Expected return on plan assets (2) (2) (2)
Net periodic pension costs $ (1) $ (1) $ (1)
v3.25.4
Employee Benefit Plans (Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets and Liabilities) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Accumulated other comprehensive (income) loss      
Net amount recognized in accumulated other comprehensive income [1] $ (13) $ (8) $ 1
Pension Plan      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase (202) 147  
Accumulated other comprehensive (income) loss      
Deferred income tax benefit 3 3  
Amortization of prior year service credit   1  
Amortization of prior year service credit (17) (12)  
Net amount recognized in accumulated other comprehensive income (14) (8)  
Pension Plan | Duke Energy Carolinas      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase (46) 39  
Pension Plan | Progress Energy      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase (84) 33  
Accumulated other comprehensive (income) loss      
Amortization of prior year service credit (1) 1  
Net amount recognized in accumulated other comprehensive income (1) 1  
Pension Plan | Duke Energy Progress      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase (40) 1  
Pension Plan | Duke Energy Florida      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase (43) 31  
Pension Plan | Duke Energy Ohio      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase (8) 11  
Pension Plan | Duke Energy Indiana      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase (6) 6  
Accumulated other comprehensive (income) loss      
Amortization of prior year service credit   (2)  
Net amount recognized in accumulated other comprehensive income   (2)  
Pension Plan | Piedmont      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase (9) 16  
Other Post-Retirement Benefit Plans      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase (11) (42)  
Regulatory liabilities, net (decrease) increase (30) (76)  
Accumulated other comprehensive (income) loss      
Amortization of prior year actuarial gain (1) 1  
Net amount recognized in accumulated other comprehensive income (1) 1  
Other Post-Retirement Benefit Plans | Duke Energy Carolinas      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase (17) (62)  
Regulatory liabilities, net (decrease) increase (17) (71)  
Other Post-Retirement Benefit Plans | Progress Energy      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase 7 23  
Regulatory liabilities, net (decrease) increase (1) 12  
Other Post-Retirement Benefit Plans | Duke Energy Progress      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase 2 17  
Regulatory liabilities, net (decrease) increase (1) 12  
Other Post-Retirement Benefit Plans | Duke Energy Florida      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase 5 5  
Other Post-Retirement Benefit Plans | Duke Energy Ohio      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase   (1)  
Regulatory liabilities, net (decrease) increase (1) (3)  
Other Post-Retirement Benefit Plans | Duke Energy Indiana      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase (3) (3)  
Regulatory liabilities, net (decrease) increase (9) $ (12)  
Other Post-Retirement Benefit Plans | Piedmont      
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]      
Regulatory assets, net (decrease) increase (1)    
Regulatory liabilities, net (decrease) increase $ 1    
[1] Net of income tax benefit of approximately $9 million for the year ended December 31, 2025, and net of income tax expense of approximately $70 million and $40 million for the years ended December 31, 2024, and 2023, respectively.
v3.25.4
Employee Benefit Plans (Projected Benefit Obligations Reconciliation of Funded Status to Net Amount Recognized) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension Plan      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date $ 5,980 $ 6,299  
Service cost 100 107  
Interest cost 329 325  
Actuarial loss (gain) 86 (106)  
Benefits paid (624) (645)  
Obligation at measurement date 5,871 5,980 $ 6,299
Accumulated Benefit Obligation at measurement date 5,839 5,948  
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date 6,887 7,162  
Employer contributions 100 100 100
Actual return on plan assets 847 270  
Benefits paid (624) (645)  
Plan assets at measurement date 7,210 6,887 7,162
Funded status of plan 1,339 907  
Pension Plan | Nonqualified Plan      
Change in Projected Benefit Obligation [Rollforward]      
Benefits paid (29)    
Obligation at measurement date 187    
Accumulated Benefit Obligation at measurement date 187    
Change in Fair Value of Plan Assets [Rollforward]      
Employer contributions 29    
Pension Plan | Duke Energy Carolinas      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 1,444 1,514  
Service cost 34 36  
Interest cost 79 78 84
Actuarial loss (gain) 32 (13)  
Benefits paid (181) (177)  
Transfers   (6)  
Obligation at measurement date 1,408 1,444 1,514
Accumulated Benefit Obligation at measurement date 1,408 1,444  
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date 1,781 1,853  
Employer contributions 27 26 26
Actual return on plan assets 214 73  
Benefits paid (181) (177)  
Transfers   6  
Plan assets at measurement date 1,841 1,781 1,853
Funded status of plan 433 337  
Pension Plan | Duke Energy Carolinas | Nonqualified Plan      
Change in Projected Benefit Obligation [Rollforward]      
Benefits paid (1)    
Obligation at measurement date 7    
Accumulated Benefit Obligation at measurement date 7    
Change in Fair Value of Plan Assets [Rollforward]      
Employer contributions 1    
Pension Plan | Progress Energy      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 1,875 1,990  
Service cost 28 30  
Interest cost 103 103 107
Actuarial loss (gain) 39 (50)  
Benefits paid (186) (198)  
Obligation at measurement date 1,859 1,875 1,990
Accumulated Benefit Obligation at measurement date 1,846 1,861  
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date 2,376 2,453  
Employer contributions 23 23 22
Actual return on plan assets 323 98  
Benefits paid (186) (198)  
Plan assets at measurement date 2,536 2,376 2,453
Funded status of plan 677 501  
Pension Plan | Progress Energy | Nonqualified Plan      
Change in Projected Benefit Obligation [Rollforward]      
Benefits paid (7)    
Obligation at measurement date 69    
Accumulated Benefit Obligation at measurement date 69    
Change in Fair Value of Plan Assets [Rollforward]      
Employer contributions 7    
Pension Plan | Duke Energy Progress      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 838 911  
Service cost 17 18  
Interest cost 46 47 49
Actuarial loss (gain) 16 (27)  
Benefits paid (103) (111)  
Obligation at measurement date 814 838 911
Accumulated Benefit Obligation at measurement date 813 838  
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date 1,069 1,120  
Employer contributions 14 14 13
Actual return on plan assets 145 46  
Benefits paid (103) (111)  
Plan assets at measurement date 1,125 1,069 1,120
Funded status of plan 311 231  
Pension Plan | Duke Energy Progress | Nonqualified Plan      
Change in Projected Benefit Obligation [Rollforward]      
Benefits paid (2)    
Obligation at measurement date 22    
Accumulated Benefit Obligation at measurement date 22    
Change in Fair Value of Plan Assets [Rollforward]      
Employer contributions 2    
Pension Plan | Duke Energy Florida      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 1,027 1,069  
Service cost 11 12  
Interest cost 57 56 57
Actuarial loss (gain) 23 (22)  
Benefits paid (81) (88)  
Obligation at measurement date 1,037 1,027 1,069
Accumulated Benefit Obligation at measurement date 1,023 1,013  
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date 1,290 1,316  
Employer contributions 10 9 9
Actual return on plan assets 176 53  
Benefits paid (81) (88)  
Plan assets at measurement date 1,395 1,290 1,316
Funded status of plan 358 263  
Pension Plan | Duke Energy Florida | Nonqualified Plan      
Change in Projected Benefit Obligation [Rollforward]      
Benefits paid (3)    
Obligation at measurement date 25    
Accumulated Benefit Obligation at measurement date 25    
Change in Fair Value of Plan Assets [Rollforward]      
Employer contributions 3    
Pension Plan | Duke Energy Ohio      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 309 325  
Service cost 2 3  
Interest cost 17 17 18
Actuarial loss (gain) 2 (3)  
Benefits paid (26) (33)  
Transfers (1)    
Obligation at measurement date 305 309 325
Accumulated Benefit Obligation at measurement date 300 304  
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date 309 326  
Employer contributions 6 5 5
Actual return on plan assets 31 11  
Benefits paid (26) (33)  
Transfers 1    
Plan assets at measurement date 321 309 326
Funded status of plan 16    
Pension Plan | Duke Energy Ohio | Nonqualified Plan      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at measurement date 2    
Accumulated Benefit Obligation at measurement date 2    
Pension Plan | Duke Energy Indiana      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 471 496  
Service cost 5 6  
Interest cost 26 26 27
Actuarial loss (gain) 8 (16)  
Benefits paid (50) (41)  
Transfers (14)    
Obligation at measurement date 474 471 496
Accumulated Benefit Obligation at measurement date 469 466  
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date 498 514  
Employer contributions 8 8 8
Actual return on plan assets 52 17  
Benefits paid (50) (41)  
Transfers 14    
Plan assets at measurement date 522 498 514
Funded status of plan 48 27  
Pension Plan | Duke Energy Indiana | Nonqualified Plan      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at measurement date 1    
Accumulated Benefit Obligation at measurement date 1    
Pension Plan | Piedmont      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 181 175  
Service cost 3 4  
Interest cost 10 9 9
Actuarial loss (gain) (2) 5  
Benefits paid (16) (12)  
Obligation at measurement date 176 181 175
Accumulated Benefit Obligation at measurement date 176 181  
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date 214 213  
Employer contributions 3 3 3
Actual return on plan assets 28 10  
Benefits paid (16) (12)  
Plan assets at measurement date 229 214 213
Funded status of plan 53 33  
Pension Plan | Piedmont | Nonqualified Plan      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at measurement date 2    
Accumulated Benefit Obligation at measurement date 2    
Other Post-Retirement Benefit Plans      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 334 347  
Service cost 2 2 2
Interest cost 18 17 22
Plan participants' contributions 1 3  
Actuarial loss (gain) 1 2  
Benefits paid (35) (37)  
Obligation at measurement date 321 334 347
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date 161 156  
Employer contributions 26    
Actual return on plan assets 18 7  
Benefits paid (35) (37)  
Tax refund   5  
Plan participants' contributions 1 3  
Employer contributions   27  
Plan assets at measurement date 171 161 156
Funded status of plan (150) (173)  
Other Post-Retirement Benefit Plans | Duke Energy Carolinas      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 63 69  
Service cost     1
Interest cost 3 3 5
Plan participants' contributions   1  
Actuarial loss (gain) (1) (2)  
Benefits paid (8) (8)  
Obligation at measurement date 57 63 69
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date 107 102  
Employer contributions 3    
Actual return on plan assets 10 4  
Benefits paid (8) (8)  
Tax refund   4  
Plan participants' contributions   1  
Employer contributions   4  
Plan assets at measurement date 112 107 102
Funded status of plan 55 44  
Other Post-Retirement Benefit Plans | Progress Energy      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 146 146  
Interest cost 8 7 9
Plan participants' contributions   1  
Actuarial loss (gain) 2 7  
Benefits paid (14) (15)  
Obligation at measurement date 142 146 146
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date (1) (1)  
Employer contributions 13    
Benefits paid (14) (15)  
Tax refund   0  
Plan participants' contributions   1  
Employer contributions   14  
Plan assets at measurement date (2) (1) (1)
Funded status of plan (144) (147)  
Other Post-Retirement Benefit Plans | Duke Energy Progress      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 87 84  
Interest cost 5 4 5
Actuarial loss (gain) 2 5  
Benefits paid (8) (6)  
Obligation at measurement date 86 87 84
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date   (1)  
Employer contributions 8    
Benefits paid (8) (6)  
Tax refund   0  
Employer contributions   7  
Plan assets at measurement date     (1)
Funded status of plan (86) (87)  
Other Post-Retirement Benefit Plans | Duke Energy Florida      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 60 60  
Interest cost 3 3 4
Actuarial loss (gain) 1 3  
Benefits paid (6) (6)  
Obligation at measurement date 58 60 60
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date   (1)  
Employer contributions 6    
Benefits paid (6) (6)  
Tax refund   0  
Employer contributions   7  
Plan assets at measurement date     (1)
Funded status of plan (58) (60)  
Other Post-Retirement Benefit Plans | Duke Energy Ohio      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 18 19  
Interest cost 1 1 1
Benefits paid (2) (2)  
Obligation at measurement date 17 18 19
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date 7 7  
Employer contributions 2    
Actual return on plan assets 1    
Benefits paid (2) (2)  
Tax refund   0  
Employer contributions   2  
Plan assets at measurement date 8 7 7
Funded status of plan (9) (11)  
Other Post-Retirement Benefit Plans | Duke Energy Indiana      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 20 24  
Interest cost 1 1 1
Actuarial loss (gain) 1 (2)  
Benefits paid (3) (3)  
Obligation at measurement date 19 20 24
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date   3  
Employer contributions 3    
Benefits paid (3) (3)  
Tax refund   0  
Plan assets at measurement date     3
Funded status of plan (19) (20)  
Other Post-Retirement Benefit Plans | Piedmont      
Change in Projected Benefit Obligation [Rollforward]      
Obligation at prior measurement date 15 15  
Interest cost 1 1 1
Actuarial loss (gain) 1    
Benefits paid (2) (1)  
Obligation at measurement date 15 15 15
Change in Fair Value of Plan Assets [Rollforward]      
Plan assets at prior measurement date 29 27  
Employer contributions 1    
Actual return on plan assets 4 3  
Benefits paid (2) (1)  
Tax refund   0  
Plan assets at measurement date 32 29 $ 27
Funded status of plan $ 17 $ 14  
v3.25.4
Employee Benefit Plans (Amounts Recognized in Consolidated Balance Sheets) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Noncurrent pension liability $ 396 $ 434
Regulatory assets 16,313 16,959
Regulatory liabilities 16,953 15,942
Duke Energy Carolinas    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Noncurrent pension liability 24 24
Regulatory assets 5,232 4,884
Regulatory liabilities 8,178 7,210
Progress Energy    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Noncurrent pension liability 247 254
Regulatory assets 7,403 8,265
Regulatory liabilities 5,951 5,780
Duke Energy Progress    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Noncurrent pension liability 139 141
Regulatory assets 5,195 5,181
Regulatory liabilities 5,081 4,918
Duke Energy Florida    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Noncurrent pension liability 88 92
Regulatory assets 2,208 3,086
Regulatory liabilities 870 862
Duke Energy Ohio    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Noncurrent pension liability 88 89
Regulatory assets 772 793
Regulatory liabilities 527 499
Duke Energy Indiana    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Noncurrent pension liability 75 82
Regulatory assets 1,225 1,153
Regulatory liabilities 1,460 1,587
Piedmont    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Noncurrent pension liability 7 7
Regulatory assets 456 528
Regulatory liabilities 822 847
Pension Plan    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Prefunded pension 1,339 907
Net asset recognized (1,339) (907)
Regulatory assets 1,966 2,168
Accumulated other comprehensive income (loss)    
Deferred income tax benefit (21) (24)
Net actuarial gain 98 115
Net amounts recognized in accumulated other comprehensive income 77 91
Pension Plan | Duke Energy Carolinas    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Prefunded pension 433 337
Net asset recognized (433) (337)
Regulatory assets 524 570
Pension Plan | Progress Energy    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Prefunded pension 678 501
Noncurrent pension liability 1  
Net asset recognized (677) (501)
Regulatory assets 627 711
Accumulated other comprehensive income (loss)    
Deferred income tax benefit (1) (1)
Net actuarial gain 3 4
Net amounts recognized in accumulated other comprehensive income 2 3
Pension Plan | Duke Energy Progress    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Prefunded pension 312 231
Noncurrent pension liability 1  
Net asset recognized (311) (231)
Regulatory assets 314 354
Pension Plan | Duke Energy Florida    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Prefunded pension 358 263
Net asset recognized (358) (263)
Regulatory assets 313 356
Pension Plan | Duke Energy Ohio    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Prefunded pension 89 74
Noncurrent pension liability 73 74
Net asset recognized (16)  
Regulatory assets 92 100
Pension Plan | Duke Energy Indiana    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Prefunded pension 120 101
Noncurrent pension liability 72 74
Net asset recognized (48) (27)
Regulatory assets 176 182
Pension Plan | Piedmont    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Prefunded pension 53 33
Net asset recognized (53) (33)
Regulatory assets 104 113
Other Post-Retirement Benefit Plans    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Current pension liability 8 8
Noncurrent pension liability 142 165
Net asset recognized 150 173
Regulatory assets 70 81
Regulatory liabilities 124 154
Accumulated other comprehensive income (loss)    
Deferred income tax expense 3 3
Net actuarial gain (13) (12)
Net amounts recognized in accumulated other comprehensive income (10) (9)
Other Post-Retirement Benefit Plans | Duke Energy Carolinas    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Prefunded pension 55 44
Net asset recognized (55) (44)
Regulatory assets   17
Regulatory liabilities 18 35
Other Post-Retirement Benefit Plans | Progress Energy    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Current pension liability 5 5
Noncurrent pension liability 139 142
Net asset recognized 144 147
Regulatory assets 69 62
Regulatory liabilities 11 12
Accumulated other comprehensive income (loss)    
Net actuarial gain (1) (1)
Net amounts recognized in accumulated other comprehensive income (1) (1)
Other Post-Retirement Benefit Plans | Duke Energy Progress    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Current pension liability 3 3
Noncurrent pension liability 83 84
Net asset recognized 86 87
Regulatory assets 48 46
Regulatory liabilities 11 12
Other Post-Retirement Benefit Plans | Duke Energy Florida    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Current pension liability 2 2
Noncurrent pension liability 56 58
Net asset recognized 58 60
Regulatory assets 21 16
Other Post-Retirement Benefit Plans | Duke Energy Ohio    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Prefunded pension 1 1
Current pension liability 1 1
Noncurrent pension liability 9 11
Net asset recognized 9 11
Regulatory assets 1 1
Regulatory liabilities 13 14
Other Post-Retirement Benefit Plans | Duke Energy Indiana    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Noncurrent pension liability 19 20
Net asset recognized 19 20
Regulatory assets 17 20
Regulatory liabilities 53 62
Other Post-Retirement Benefit Plans | Piedmont    
Amounts Recognized in Consolidated Balance Sheets [Abstract]    
Prefunded pension 17 14
Net asset recognized (17) (14)
Regulatory assets   $ 1
Regulatory liabilities $ 1  
v3.25.4
Employee Benefit Plans (Information For Plans with Accumulated Benefit Obligation in Excess of Plan Assets) (Details) - Pension Plan - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Duke Energy Ohio    
Information For Plans With Accumulated Benefit Obligation In Excess Of Plan Assets [Abstract]    
Projected benefit obligation $ 112 $ 106
Accumulated benefit obligation 107 101
Fair value of plan assets 39 32
Duke Energy Indiana    
Information For Plans With Accumulated Benefit Obligation In Excess Of Plan Assets [Abstract]    
Projected benefit obligation 216 203
Accumulated benefit obligation 211 197
Fair value of plan assets $ 145 $ 128
v3.25.4
Employee Benefit Plans (Assumptions Used For Pension Benefits Accounting) (Details)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension Plan      
Benefit Obligations      
Discount rate (as a percent) 5.50% 5.70% 5.40%
Interest crediting rate (as a percent) 4.84% 4.78% 4.15%
Net Periodic Benefit Cost      
Interest crediting rate (as a percent) 4.78% 4.15% 4.35%
Pension Plan | Minimum      
Benefit Obligations      
Salary increase (as a percent) 3.50% 3.50% 3.50%
Net Periodic Benefit Cost      
Discount rate (as a percent) 5.00%
Salary increase (as a percent) 3.50% 3.50% 3.50%
Expected long-term rate of return on plan assets (as a percent) 8.50% 8.50% 6.50%
Pension Plan | Maximum      
Benefit Obligations      
Salary increase (as a percent) 4.00% 4.00% 4.00%
Net Periodic Benefit Cost      
Discount rate (as a percent) 5.70% 5.40% 5.60%
Salary increase (as a percent) 4.00% 4.00% 4.00%
Expected long-term rate of return on plan assets (as a percent) 7.00% 7.00% 8.25%
Other Post-Retirement Benefit Plans      
Benefit Obligations      
Discount rate (as a percent) 5.50% 5.70% 5.40%
Net Periodic Benefit Cost      
Discount rate (as a percent) 5.70% 5.40% 5.60%
Other Post-Retirement Benefit Plans | Minimum      
Net Periodic Benefit Cost      
Expected long-term rate of return on plan assets (as a percent) 2.50% 2.75% 4.00%
Other Post-Retirement Benefit Plans | Maximum      
Net Periodic Benefit Cost      
Expected long-term rate of return on plan assets (as a percent) 8.50% 8.50% 8.25%
v3.25.4
Employee Benefit Plans (Expected Benefit Payments) (Details)
$ in Millions
Dec. 31, 2025
USD ($)
Pension Plan  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 $ 596
2027 578
2028 565
2029 540
2030 514
2031-2035 2,319
Pension Plan | Duke Energy Carolinas  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 157
2027 150
2028 145
2029 135
2030 126
2031-2035 540
Pension Plan | Progress Energy  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 176
2027 173
2028 169
2029 165
2030 159
2031-2035 740
Pension Plan | Duke Energy Progress  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 89
2027 86
2028 81
2029 77
2030 73
2031-2035 324
Pension Plan | Duke Energy Florida  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 86
2027 87
2028 87
2029 87
2030 86
2031-2035 412
Pension Plan | Duke Energy Ohio  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 30
2027 29
2028 29
2029 28
2030 28
2031-2035 124
Pension Plan | Duke Energy Indiana  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 44
2027 43
2028 43
2029 43
2030 42
2031-2035 198
Pension Plan | Piedmont  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 19
2027 18
2028 17
2029 16
2030 16
2031-2035 71
Other Post-Retirement Benefit Plans  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 54
2027 44
2028 38
2029 34
2030 31
2031-2035 121
Other Post-Retirement Benefit Plans | Duke Energy Carolinas  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 13
2027 10
2028 8
2029 7
2030 6
2031-2035 20
Other Post-Retirement Benefit Plans | Progress Energy  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 18
2027 16
2028 15
2029 14
2030 14
2031-2035 58
Other Post-Retirement Benefit Plans | Duke Energy Progress  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 11
2027 10
2028 9
2029 8
2030 8
2031-2035 35
Other Post-Retirement Benefit Plans | Duke Energy Florida  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 7
2027 7
2028 6
2029 6
2030 5
2031-2035 23
Other Post-Retirement Benefit Plans | Duke Energy Ohio  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 3
2027 3
2028 2
2029 2
2030 2
2031-2035 6
Other Post-Retirement Benefit Plans | Duke Energy Indiana  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 4
2027 3
2028 2
2029 2
2030 2
2031-2035 7
Other Post-Retirement Benefit Plans | Piedmont  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2026 2
2027 2
2028 2
2029 2
2030 2
2031-2035 $ 6
v3.25.4
Employee Benefit Plans (Assumed Health Care Cost Trend Rates) (Details)
Dec. 31, 2025
Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]    
Health care cost trend rate assumed for next year (as a percent) 8.00% 7.00%
Rate to which the cost trend is assumed to decline (the ultimate trend rate) (as a percent) 5.00% 4.75%
Maximum    
Defined Benefit Plan Disclosure [Line Items]    
Health care cost trend rate assumed for next year (as a percent) 8.00%  
v3.25.4
Employee Benefit Plans (Target and Actual Asset Allocations) (Details)
Dec. 31, 2025
Dec. 31, 2024
Master Trust    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 100.00%  
Actual asset allocation 100.00% 100.00%
Master Trust | Global equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 36.00%  
Actual asset allocation 37.00% 44.00%
Master Trust | Global private equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 1.00%  
Actual asset allocation 1.00% 1.00%
Master Trust | Debt securities    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 45.00%  
Actual asset allocation 45.00% 33.00%
Master Trust | Return seeking debt securities    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 6.00%  
Actual asset allocation 5.00% 7.00%
Master Trust | Hedge funds    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 5.00%  
Actual asset allocation 5.00% 5.00%
Master Trust | Real assets and cash    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 7.00%  
Actual asset allocation 7.00% 10.00%
OPEB    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 100.00%  
Actual asset allocation 100.00% 100.00%
OPEB | U.S. equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 29.00%  
Actual asset allocation 32.00% 34.00%
OPEB | Non-U.S. equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 14.00%  
Actual asset allocation 17.00% 15.00%
OPEB | Debt securities    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 48.00%  
Actual asset allocation 28.00% 31.00%
OPEB | Real estate    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 4.00%  
Actual asset allocation 7.00% 7.00%
OPEB | Cash    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 5.00%  
Actual asset allocation 16.00% 13.00%
Other Post-Retirement Benefit Plans | Master Trust    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 100.00%  
Actual asset allocation 100.00% 100.00%
Other Post-Retirement Benefit Plans | Master Trust | Global equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 22.00%  
Actual asset allocation 23.00% 15.00%
Other Post-Retirement Benefit Plans | Master Trust | Debt securities    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 65.00%  
Actual asset allocation 64.00% 79.00%
Other Post-Retirement Benefit Plans | Master Trust | Return seeking debt securities    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 4.00%  
Actual asset allocation 3.00% 2.00%
Other Post-Retirement Benefit Plans | Master Trust | Hedge funds    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 5.00%  
Actual asset allocation 5.00%  
Other Post-Retirement Benefit Plans | Master Trust | Real assets and cash    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation (as a percent) 4.00%  
Actual asset allocation 5.00% 4.00%
v3.25.4
Employee Benefit Plans (Fair Value Measurements of Plan Assets - Master Retirement Trust) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets $ 7,296 $ 6,969  
OPEB      
Defined Benefit Plan Disclosure [Line Items]      
Total assets $ 24 $ 20  
Duke Energy Carolinas | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Allocated assets (as a percent) 26.00% 27.00%  
Progress Energy | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Allocated assets (as a percent) 34.00% 33.00%  
Duke Energy Progress | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Allocated assets (as a percent) 15.00% 15.00%  
Duke Energy Florida | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Allocated assets (as a percent) 19.00% 18.00%  
Duke Energy Ohio | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Allocated assets (as a percent) 4.00% 5.00%  
Duke Energy Indiana | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Allocated assets (as a percent) 7.00% 7.00%  
Piedmont | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Allocated assets (as a percent) 4.00% 3.00%  
Equity securities | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets $ 2,630 $ 2,461  
Equity securities | OPEB      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 12 10  
Corporate debt securities | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 2,163 2,415  
Short-term investment funds | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 355 310  
Partnership interests | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 80 68  
Hedge funds | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 301 164  
Real estate | OPEB      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 1 1  
U.S. government bonds | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 1,609 1,398  
Governments bonds – foreign | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 133 128  
Cash | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 30 15  
Government and commercial mortgage-backed securities | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 1 1  
Net pending transactions and other investments | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets (6) 9  
Cash and cash equivalents | OPEB      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 4 3  
Debt securities | OPEB      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 7 6  
Level 1 | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 2,451 2,242  
Level 1 | Equity securities | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 2,428 2,216  
Level 1 | Cash | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 30 15  
Level 1 | Net pending transactions and other investments | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets (7) 11  
Level 2 | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 4,464 4,481  
Level 2 | OPEB      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 24 20  
Level 2 | Equity securities | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 202 231  
Level 2 | Equity securities | OPEB      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 12 10  
Level 2 | Corporate debt securities | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 2,163 2,415  
Level 2 | Short-term investment funds | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 355 310  
Level 2 | Real estate | OPEB      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 1 1  
Level 2 | U.S. government bonds | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 1,609 1,398  
Level 2 | Governments bonds – foreign | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 133 128  
Level 2 | Government and commercial mortgage-backed securities | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 1 1  
Level 2 | Net pending transactions and other investments | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 1 (2)  
Level 2 | Cash and cash equivalents | OPEB      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 4 3  
Level 2 | Debt securities | OPEB      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 7 6  
Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 80 68 $ 76
Level 3 | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 80 68  
Level 3 | Partnership interests | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 80 68  
Not Categorized | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets 301 178  
Not Categorized | Equity securities | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets   14  
Not Categorized | Hedge funds | Master Trust      
Defined Benefit Plan Disclosure [Line Items]      
Total assets $ 301 $ 164  
v3.25.4
Employee Benefit Plans (Reconciliation of Assets Measured at Fair Value on a Recurring Basis) (Details) - Level 3 - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]    
Plan assets at prior measurement date $ 68 $ 76
Sales (14) (10)
Total gains and other, net 26 2
Plan assets at measurement date $ 80 $ 68
v3.25.4
Employee Benefit Plans (Employee Savings Plans) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions $ 272 $ 257 $ 238
Duke Energy Carolinas      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 90 81 75
Progress Energy      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 77 72 62
Duke Energy Progress      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 47 43 40
Duke Energy Florida      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 30 29 22
Duke Energy Ohio      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 7 6 6
Duke Energy Indiana      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions 17 13 13
Piedmont      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions $ 15 $ 14 $ 13
v3.25.4
Income Taxes (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Tax Disclosure [Line Items]      
Net proceeds related to the sale of certain tax credits $ 723 $ 558 $ 28
Alternative minimum tax   69  
Tax credits 23 43 63
PTCs      
Income Tax Disclosure [Line Items]      
Tax credits     28
Duke Energy Carolinas      
Income Tax Disclosure [Line Items]      
Deferred tax asset 913 449  
Proceeds from sale of tax credits 723 558  
Net proceeds related to the sale of certain tax credits 551 440 0
Tax credits 11 23 11
Duke Energy Carolinas | Sale of Nuclear Power PTCs      
Income Tax Disclosure [Line Items]      
Decrease in deferred tax asset 530 428  
Duke Energy Progress      
Income Tax Disclosure [Line Items]      
Deferred tax asset 152 73  
Net proceeds related to the sale of certain tax credits 102 71 0
Tax credits 6 12 7
Duke Energy Progress | Sale of Nuclear Power PTCs      
Income Tax Disclosure [Line Items]      
Decrease in deferred tax asset 83 65  
Duke Energy Florida      
Income Tax Disclosure [Line Items]      
Net proceeds related to the sale of certain tax credits 69 47 28
Tax credits 3 4 $ 39
Duke Energy Florida | Sale of Nuclear Power PTCs      
Income Tax Disclosure [Line Items]      
Decrease in deferred tax asset $ 69 43  
Domestic Tax Jurisdiction      
Income Tax Disclosure [Line Items]      
Favorable adjustment amounts   114  
State      
Income Tax Disclosure [Line Items]      
Favorable adjustment amounts   $ 6  
v3.25.4
Income Taxes (Components of Income Tax Expense) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Current income taxes      
Federal(a) $ (565) $ (365) $ 71
State (6) 31 1
Foreign 2 2 3
Total current income taxes (569) (332) 75
Deferred income taxes      
Federal 1,101 858 319
State 135 81 53
Total deferred income taxes 1,236 939 372
ITC amortization (25) (17) (9)
Income tax expense from continuing operations 642 590 438
Tax benefit from discontinued operations   (50) (359)
Total income tax expense included in Consolidated Statements of Operations   540 79
Deferred income taxes attributable to generation / utilization under tax sharing agreement 354    
Net operating loss carry forward 523 214  
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]      
Domestic 5,674 5,145 4,700
Foreign 38 49 67
Income from continuing operations before income taxes 5,712 5,194 4,767
Alternative minimum tax   69  
Duke Energy Carolinas      
Current income taxes      
Federal(a) (278) 178 173
State 30 75 22
Total current income taxes (248) 253 195
Deferred income taxes      
Federal 432 10 (43)
State 27 (25) (7)
Total deferred income taxes 459 (15) (50)
ITC amortization (17) (12) (4)
Income tax expense from continuing operations 194 226 141
Total income tax expense included in Consolidated Statements of Operations   226 141
Deferred income taxes attributable to generation / utilization under tax sharing agreement (36)    
Net operating loss carry forward 47 2  
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]      
Income from continuing operations before income taxes 2,302 2,109 1,611
Progress Energy      
Current income taxes      
Federal(a) 134 359 459
State 21 34 38
Total current income taxes 155 393 497
Deferred income taxes      
Federal 259 (22) (154)
State 76 59 38
Total deferred income taxes 335 37 (116)
ITC amortization (5) (4) (4)
Income tax expense from continuing operations 485 426 377
Total income tax expense included in Consolidated Statements of Operations   426 377
Deferred income taxes attributable to generation / utilization under tax sharing agreement (11)    
Net operating loss carry forward 85 116  
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]      
Income from continuing operations before income taxes 2,900 2,597 2,333
Duke Energy Progress      
Current income taxes      
Federal(a) (118) 373 198
State (3) 40 4
Total current income taxes (121) 413 202
Deferred income taxes      
Federal 319 (215) (69)
State 29 (6) 19
Total deferred income taxes 348 (221) (50)
ITC amortization (4) (3) (3)
Income tax expense from continuing operations 223 189 149
Total income tax expense included in Consolidated Statements of Operations   189 149
Deferred income taxes attributable to generation / utilization under tax sharing agreement (29)    
Net operating loss carry forward 66 59  
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]      
Income from continuing operations before income taxes 1,505 1,353 1,147
Duke Energy Florida      
Current income taxes      
Federal(a) 264 14 279
State 74 (12) 71
Total current income taxes 338 2 350
Deferred income taxes      
Federal (57) 181 (89)
State 9 86  
Total deferred income taxes (48) 267 (89)
ITC amortization (1) (1)  
Income tax expense from continuing operations 289 268 261
Total income tax expense included in Consolidated Statements of Operations   268 261
Deferred income taxes attributable to generation / utilization under tax sharing agreement 4    
Net operating loss carry forward 30 5  
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]      
Income from continuing operations before income taxes 1,482 1,329 1,277
Proceeds from sale of PTCs   28  
Duke Energy Ohio      
Current income taxes      
Federal(a) 66 52 (46)
State 2 3 (3)
Total current income taxes 68 55 (49)
Deferred income taxes      
Federal (3) 8 111
State 3 1 1
Total deferred income taxes   9 112
Income tax expense from continuing operations 68 64 63
Total income tax expense included in Consolidated Statements of Operations   64 63
Deferred income taxes attributable to generation / utilization under tax sharing agreement (14)    
Net operating loss carry forward 26 22  
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]      
Income from continuing operations before income taxes 406 405 397
Duke Energy Indiana      
Current income taxes      
Federal(a) 125 70 10
State 13 12 9
Total current income taxes 138 82 19
Deferred income taxes      
Federal (64) (19) 77
State 11 8 14
Total deferred income taxes (53) (11) 91
ITC amortization (3)    
Income tax expense from continuing operations 82 71 110
Total income tax expense included in Consolidated Statements of Operations   71 110
Deferred income taxes attributable to generation / utilization under tax sharing agreement (45)    
Net operating loss carry forward 8 54  
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]      
Income from continuing operations before income taxes 602 512 607
Piedmont      
Current income taxes      
Federal(a) 65 40 44
State 7 (6) 3
Total current income taxes 72 34 47
Deferred income taxes      
Federal 37 40 25
State 3 21 12
Total deferred income taxes 40 61 37
Income tax expense from continuing operations 112 95 84
Total income tax expense included in Consolidated Statements of Operations   95 84
Deferred income taxes attributable to generation / utilization under tax sharing agreement (2)    
Net operating loss carry forward 8 15  
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]      
Income from continuing operations before income taxes $ 552 $ 508 $ 463
v3.25.4
Income Taxes (Effective Tax Rates) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]      
U.S. Federal statutory income tax $ 1,200 $ 1,090 $ 1,001
Tax credits      
Production tax credits   (46)  
Amortization of ITCs (25)    
Other (23) (43) (63)
AFUDC equity income (68) (48) (41)
AFUDC equity depreciation 46 38 37
Amortization of EDIT (466) (436) (388)
Other (27)    
Changes in valuation allowances 7    
Foreign tax effects (6)    
Unrecognized tax benefits (1)    
Domestic state and local income taxes, net of federal effect 106 88 43
Interest on company-owned life insurance     (114)
Other items, net   (53) (37)
Income tax expense from continuing operations $ 642 $ 590 $ 438
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
U.S. Federal statutory income tax 21.00%    
Tax credits      
Amortization of ITCs (0.40%)    
Other (0.40%)    
AFUDC equity income (1.20%)    
AFUDC equity depreciation 0.80%    
Amortization of EDIT (8.20%)    
Other (0.50%)    
Changes in valuation allowances 0.10%    
Foreign tax effects (0.10%)    
Unrecognized tax benefits 0.00%    
Domestic state and local income taxes, net of federal effect 1.80%    
Total 11.20% 11.40% 9.20%
PTCs (solar)      
Tax credits      
Production tax credits $ (65)    
Tax credits      
Production tax credits (1.10%)    
Amortization of PTCs (nuclear)      
Tax credits      
Production tax credits $ (36)    
Tax credits      
Production tax credits (0.60%)    
Duke Energy Carolinas      
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]      
U.S. Federal statutory income tax $ 483 $ 443 $ 338
Tax credits      
Amortization of ITCs (17)    
Other (11) (23) (11)
AFUDC equity income (30) (24) (19)
AFUDC equity depreciation 19 19 18
Amortization of EDIT (260) (225) (197)
Other (1)    
Domestic state and local income taxes, net of federal effect 47 40 12
Other items, net   (4)  
Income tax expense from continuing operations $ 194 $ 226 $ 141
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
U.S. Federal statutory income tax 21.00%    
Tax credits      
Amortization of ITCs (0.70%)    
Other (0.50%)    
AFUDC equity income (1.30%)    
AFUDC equity depreciation 0.80%    
Amortization of EDIT (11.30%)    
Other 0.00%    
Changes in valuation allowances 0.00%    
Foreign tax effects 0.00%    
Unrecognized tax benefits 0.00%    
Domestic state and local income taxes, net of federal effect 2.00%    
Total 8.40% 10.70% 8.80%
Duke Energy Carolinas | PTCs (solar)      
Tax credits      
Production tax credits 0.00%    
Duke Energy Carolinas | Amortization of PTCs (nuclear)      
Tax credits      
Production tax credits $ (36)    
Tax credits      
Production tax credits (1.60%)    
Progress Energy      
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]      
U.S. Federal statutory income tax $ 609 $ 545 $ 490
Tax credits      
Production tax credits   (46)  
Amortization of ITCs (5)    
Other (9) (16) (46)
AFUDC equity income (25) (16) (14)
AFUDC equity depreciation 19 14 13
Amortization of EDIT (118) (121) (114)
Other 1    
Unrecognized tax benefits (1)    
Domestic state and local income taxes, net of federal effect 79 73 60
Other items, net   (7) (12)
Income tax expense from continuing operations $ 485 $ 426 $ 377
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
U.S. Federal statutory income tax 21.00%    
Tax credits      
Amortization of ITCs (0.20%)    
Other (0.30%)    
AFUDC equity income (0.90%)    
AFUDC equity depreciation 0.70%    
Amortization of EDIT (4.10%)    
Other 0.00%    
Changes in valuation allowances 0.00%    
Foreign tax effects 0.00%    
Unrecognized tax benefits 0.00%    
Domestic state and local income taxes, net of federal effect 2.70%    
Total 16.70% 16.40% 16.20%
Progress Energy | PTCs (solar)      
Tax credits      
Production tax credits $ (65)    
Tax credits      
Production tax credits (2.20%)    
Progress Energy | Amortization of PTCs (nuclear)      
Tax credits      
Production tax credits 0.00%    
Duke Energy Progress      
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]      
U.S. Federal statutory income tax $ 316 $ 284 $ 241
Tax credits      
Amortization of ITCs (4)    
Other (6) (12) (7)
AFUDC equity income (21) (13) (11)
AFUDC equity depreciation 11 7 6
Amortization of EDIT (96) (98) (91)
Other 2    
Unrecognized tax benefits (1)    
Domestic state and local income taxes, net of federal effect 23 27 18
Other items, net   (6) (7)
Income tax expense from continuing operations $ 223 $ 189 $ 149
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
U.S. Federal statutory income tax 21.00%    
Tax credits      
Amortization of ITCs (0.30%)    
Other (0.40%)    
AFUDC equity income (1.40%)    
AFUDC equity depreciation 0.70%    
Amortization of EDIT (6.40%)    
Other 0.10%    
Changes in valuation allowances 0.00%    
Foreign tax effects 0.00%    
Unrecognized tax benefits 0.00%    
Domestic state and local income taxes, net of federal effect 1.50%    
Total 14.80% 14.00% 13.00%
Duke Energy Progress | PTCs (solar)      
Tax credits      
Production tax credits $ (1)    
Tax credits      
Production tax credits 0.00%    
Duke Energy Progress | Amortization of PTCs (nuclear)      
Tax credits      
Production tax credits 0.00%    
Duke Energy Florida      
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]      
U.S. Federal statutory income tax $ 311 $ 279 $ 268
Tax credits      
Production tax credits   (46)  
Amortization of ITCs (1)    
Other (3) (4) (39)
AFUDC equity income (4) (3) (3)
AFUDC equity depreciation 8 7 7
Amortization of EDIT (22) (23) (23)
Other (3)    
Unrecognized tax benefits 1    
Domestic state and local income taxes, net of federal effect 66 58 56
Other items, net     (5)
Income tax expense from continuing operations $ 289 $ 268 $ 261
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
U.S. Federal statutory income tax 21.00%    
Tax credits      
Amortization of ITCs (0.10%)    
Other (0.20%)    
AFUDC equity income (0.30%)    
AFUDC equity depreciation 0.50%    
Amortization of EDIT (1.50%)    
Other (0.20%)    
Changes in valuation allowances 0.00%    
Foreign tax effects 0.00%    
Unrecognized tax benefits 0.10%    
Domestic state and local income taxes, net of federal effect 4.50%    
Total 19.50% 20.20% 20.40%
Duke Energy Florida | PTCs (solar)      
Tax credits      
Production tax credits $ (64)    
Tax credits      
Production tax credits (4.30%)    
Duke Energy Florida | Amortization of PTCs (nuclear)      
Tax credits      
Production tax credits 0.00%    
Duke Energy Ohio      
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]      
U.S. Federal statutory income tax $ 85 $ 85 $ 83
Tax credits      
Other (1) (1) (2)
AFUDC equity income (3) (1) (2)
AFUDC equity depreciation 4 2 2
Amortization of EDIT (22) (23) (22)
Domestic state and local income taxes, net of federal effect 4 3 (2)
Other items, net   (1) 6
Income tax expense from continuing operations $ 68 $ 64 $ 63
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
U.S. Federal statutory income tax 21.00%    
Tax credits      
Amortization of ITCs 0.00%    
Other (0.20%)    
AFUDC equity income (0.70%)    
AFUDC equity depreciation 1.00%    
Amortization of EDIT (5.40%)    
Other 0.00%    
Changes in valuation allowances 0.00%    
Foreign tax effects 0.00%    
Unrecognized tax benefits 0.00%    
Domestic state and local income taxes, net of federal effect 1.00%    
Total 16.70% 15.80% 15.90%
Duke Energy Ohio | PTCs (solar)      
Tax credits      
Production tax credits 0.00%    
Duke Energy Ohio | Amortization of PTCs (nuclear)      
Tax credits      
Production tax credits 0.00%    
Duke Energy Indiana      
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]      
U.S. Federal statutory income tax $ 127 $ 108 $ 128
Tax credits      
Amortization of ITCs (3)    
Other (1) (2) (2)
AFUDC equity income (6) (3) (2)
AFUDC equity depreciation 4 4 4
Amortization of EDIT (57) (49) (33)
Domestic state and local income taxes, net of federal effect 19 16 18
Other items, net   (3) (3)
Income tax expense from continuing operations $ 82 $ 71 $ 110
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
U.S. Federal statutory income tax 21.00%    
Tax credits      
Amortization of ITCs (0.50%)    
Other (0.20%)    
AFUDC equity income (1.00%)    
AFUDC equity depreciation 0.70%    
Amortization of EDIT (9.50%)    
Other (0.10%)    
Changes in valuation allowances 0.00%    
Foreign tax effects 0.00%    
Unrecognized tax benefits 0.00%    
Domestic state and local income taxes, net of federal effect 3.20%    
Total 13.60% 13.90% 18.10%
Duke Energy Indiana | PTCs (solar)      
Tax credits      
Production tax credits 0.00%    
Duke Energy Indiana | Amortization of PTCs (nuclear)      
Tax credits      
Production tax credits 0.00%    
Piedmont      
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]      
U.S. Federal statutory income tax $ 116 $ 107 $ 97
Tax credits      
Other (1) (2) (1)
AFUDC equity income (4) (4) (4)
AFUDC equity depreciation 1    
Amortization of EDIT (8) (18) (20)
Domestic state and local income taxes, net of federal effect 9 12 12
Income tax expense from continuing operations $ 112 $ 95 $ 84
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
U.S. Federal statutory income tax 21.00%    
Tax credits      
Amortization of ITCs 0.00%    
Other (0.20%)    
AFUDC equity income (0.70%)    
AFUDC equity depreciation 0.20%    
Amortization of EDIT (1.40%)    
Other (0.20%)    
Changes in valuation allowances 0.00%    
Foreign tax effects 0.00%    
Unrecognized tax benefits 0.00%    
Domestic state and local income taxes, net of federal effect 1.60%    
Total 20.30% 18.70% 18.10%
Piedmont | PTCs (solar)      
Tax credits      
Production tax credits 0.00%    
Piedmont | Amortization of PTCs (nuclear)      
Tax credits      
Production tax credits 0.00%    
v3.25.4
Income Taxes (Deferred Income Taxes) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Deferred Tax Assets, Gross [Abstract]    
Deferred credits and other liabilities $ 254 $ 284
Lease obligations 452 430
Pension, post-retirement and other employee benefits 20 89
Progress Energy merger purchase accounting adjustments 210 227
Tax credits and NOL carryforwards 3,259 3,845
Other 36 35
Valuation allowance (130) (517)
Total deferred income tax assets 4,101 4,393
Deferred Tax Liabilities, Gross [Abstract]    
Investments and other assets (2,452) (2,114)
Accelerated depreciation rates (12,629) (11,942)
Regulatory assets and deferred debits, net (1,397) (1,761)
Total deferred income tax liabilities (16,478) (15,817)
Net deferred income tax liabilities (12,377) (11,424)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Tax credits and NOL carryforwards 3,259 3,845
Valuation allowance 130 517
Net operating loss carry forward 523 214
General Business Credits    
Deferred Tax Assets, Gross [Abstract]    
Tax credits and NOL carryforwards 1,908  
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Tax credits and NOL carryforwards 1,908  
Foreign Tax Credit    
Deferred Tax Assets, Gross [Abstract]    
Valuation allowance (36)  
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Valuation allowance 36  
Foreign Tax Credit | Federal    
Deferred Tax Assets, Gross [Abstract]    
Tax credits and NOL carryforwards 36  
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Tax credits and NOL carryforwards 36  
State Carryforward And Credits | State    
Deferred Tax Assets, Gross [Abstract]    
Tax credits and NOL carryforwards 265  
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Tax credits and NOL carryforwards 265  
Corporate AMT Credit Cards    
Deferred Tax Assets, Gross [Abstract]    
Tax credits and NOL carryforwards 1,038  
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Tax credits and NOL carryforwards 1,038  
NOL Carryforwards | State    
Deferred Tax Assets, Gross [Abstract]    
Valuation allowance (83)  
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Valuation allowance 83  
NOL Carryforwards | Foreign    
Deferred Tax Assets, Gross [Abstract]    
Tax credits and NOL carryforwards 12  
Valuation allowance (12)  
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Tax credits and NOL carryforwards 12  
Valuation allowance 12  
Duke Energy Carolinas    
Deferred Tax Assets, Gross [Abstract]    
Deferred credits and other liabilities 217 217
Lease obligations 86 88
Pension, post-retirement and other employee benefits   (33)
Tax credits and NOL carryforwards 595 522
Other 2 11
Valuation allowance (1)  
Total deferred income tax assets 899 805
Deferred Tax Liabilities, Gross [Abstract]    
Investments and other assets (1,545) (1,350)
Pension post-retirement and other employee benefits (43)  
Accelerated depreciation rates (3,219) (3,203)
Regulatory assets and deferred debits, net (283) (304)
Total deferred income tax liabilities (5,090) (4,857)
Net deferred income tax liabilities (4,191) (4,052)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Tax credits and NOL carryforwards 595 522
Valuation allowance 1  
Net operating loss carry forward 47 2
Progress Energy    
Deferred Tax Assets, Gross [Abstract]    
Deferred credits and other liabilities 82 84
Lease obligations 263 265
Pension, post-retirement and other employee benefits   (23)
Tax credits and NOL carryforwards 844 783
Other 4 5
Total deferred income tax assets 1,193 1,114
Deferred Tax Liabilities, Gross [Abstract]    
Investments and other assets (829) (724)
Pension post-retirement and other employee benefits (57)  
Accelerated depreciation rates (5,171) (4,608)
Regulatory assets and deferred debits, net (712) (1,045)
Total deferred income tax liabilities (6,769) (6,377)
Net deferred income tax liabilities (5,576) (5,263)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Tax credits and NOL carryforwards 844 783
Net operating loss carry forward 85 116
Duke Energy Progress    
Deferred Tax Assets, Gross [Abstract]    
Deferred credits and other liabilities 49 43
Lease obligations 184 179
Pension, post-retirement and other employee benefits   (1)
Tax credits and NOL carryforwards 383 312
Other 3 3
Total deferred income tax assets 619 536
Deferred Tax Liabilities, Gross [Abstract]    
Investments and other assets (790) (671)
Pension post-retirement and other employee benefits (13)  
Accelerated depreciation rates (1,914) (1,624)
Regulatory assets and deferred debits, net (544) (585)
Total deferred income tax liabilities (3,261) (2,880)
Net deferred income tax liabilities (2,642) (2,344)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Tax credits and NOL carryforwards 383 312
Net operating loss carry forward 66 59
Duke Energy Florida    
Deferred Tax Assets, Gross [Abstract]    
Deferred credits and other liabilities 33 41
Lease obligations 79 86
Pension, post-retirement and other employee benefits   (26)
Tax credits and NOL carryforwards 452 449
Other 1 2
Total deferred income tax assets 565 552
Deferred Tax Liabilities, Gross [Abstract]    
Investments and other assets (54) (69)
Pension post-retirement and other employee benefits (48)  
Accelerated depreciation rates (3,301) (3,047)
Regulatory assets and deferred debits, net (167) (460)
Total deferred income tax liabilities (3,570) (3,576)
Net deferred income tax liabilities (3,005) (3,024)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Tax credits and NOL carryforwards 452 449
Net operating loss carry forward 30 5
Duke Energy Ohio    
Deferred Tax Assets, Gross [Abstract]    
Deferred credits and other liabilities 23 17
Lease obligations 1 2
Pension, post-retirement and other employee benefits 3 6
Tax credits and NOL carryforwards 84 70
Regulatory liabilities and deferred credits 2  
Other 4 4
Total deferred income tax assets 117 99
Deferred Tax Liabilities, Gross [Abstract]    
Accelerated depreciation rates (1,414) (1,361)
Regulatory assets and deferred debits, net (44) (52)
Total deferred income tax liabilities (1,458) (1,413)
Net deferred income tax liabilities (1,341) (1,314)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Tax credits and NOL carryforwards 84 70
Net operating loss carry forward 26 22
Duke Energy Indiana    
Deferred Tax Assets, Gross [Abstract]    
Deferred credits and other liabilities 15 15
Lease obligations 11 12
Pension, post-retirement and other employee benefits   1
Tax credits and NOL carryforwards 191 145
Regulatory liabilities and deferred credits 19 10
Other (1)  
Total deferred income tax assets 235 183
Deferred Tax Liabilities, Gross [Abstract]    
Pension post-retirement and other employee benefits (3)  
Accelerated depreciation rates (1,701) (1,677)
Regulatory assets and deferred debits, net (56)  
Total deferred income tax liabilities (1,760) (1,677)
Net deferred income tax liabilities (1,525) (1,494)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Tax credits and NOL carryforwards 191 145
Net operating loss carry forward 8 54
Piedmont    
Deferred Tax Assets, Gross [Abstract]    
Deferred credits and other liabilities 21 40
Lease obligations 1 2
Pension, post-retirement and other employee benefits   (2)
Tax credits and NOL carryforwards 58 57
Other 7 8
Total deferred income tax assets 87 105
Deferred Tax Liabilities, Gross [Abstract]    
Investments and other assets (68) (48)
Pension post-retirement and other employee benefits (6)  
Accelerated depreciation rates (1,072) (1,019)
Regulatory assets and deferred debits, net (12) (56)
Total deferred income tax liabilities (1,158) (1,123)
Net deferred income tax liabilities (1,071) (1,018)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]    
Tax credits and NOL carryforwards 58 57
Net operating loss carry forward $ 8 $ 15
v3.25.4
Income Taxes (Income Taxes Paid) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Effective Income Tax Rate Reconciliation [Line Items]      
Internal Revenue Service – payments/(refunds) $ 58    
Transferrable Credits – purchased/(sold) (676)    
Total Federal (618)    
Total State (7)    
Total Income Taxes Paid (net of refunds) (625) $ (400) $ 1
North Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State (4)    
South Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Florida      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Indiana      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Kentucky      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 1    
Oklahoma      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State (4)    
Other      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Carolinas      
Effective Income Tax Rate Reconciliation [Line Items]      
Internal Revenue Service – payments/(refunds) 561    
Transferrable Credits – purchased/(sold) (551)    
Total Federal 10    
Total State 75    
Total Income Taxes Paid (net of refunds) 85 (85) 151
Duke Energy Carolinas | North Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 39    
Duke Energy Carolinas | South Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 36    
Duke Energy Carolinas | Florida      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Carolinas | Indiana      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Carolinas | Kentucky      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Carolinas | Oklahoma      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Carolinas | Other      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Progress Energy      
Effective Income Tax Rate Reconciliation [Line Items]      
Internal Revenue Service – payments/(refunds) 424    
Transferrable Credits – purchased/(sold) (171)    
Total Federal 253    
Total State 12    
Total Income Taxes Paid (net of refunds) 265 315 310
Progress Energy | North Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 7    
Progress Energy | South Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Progress Energy | Florida      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 5    
Progress Energy | Indiana      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Progress Energy | Kentucky      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Progress Energy | Oklahoma      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Progress Energy | Other      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Progress      
Effective Income Tax Rate Reconciliation [Line Items]      
Internal Revenue Service – payments/(refunds) 211    
Transferrable Credits – purchased/(sold) (102)    
Total Federal 109    
Total State 11    
Total Income Taxes Paid (net of refunds) 120 192 73
Duke Energy Progress | North Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 9    
Duke Energy Progress | South Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 2    
Duke Energy Progress | Florida      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Progress | Indiana      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Progress | Kentucky      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Progress | Oklahoma      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Progress | Other      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Florida      
Effective Income Tax Rate Reconciliation [Line Items]      
Internal Revenue Service – payments/(refunds) 202    
Transferrable Credits – purchased/(sold) (69)    
Total Federal 133    
Total State 34    
Total Income Taxes Paid (net of refunds) 167 270 219
Duke Energy Florida | North Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Florida | South Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Florida | Florida      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 34    
Duke Energy Florida | Indiana      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Florida | Kentucky      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Florida | Oklahoma      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Florida | Other      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Ohio      
Effective Income Tax Rate Reconciliation [Line Items]      
Internal Revenue Service – payments/(refunds) 100    
Transferrable Credits – purchased/(sold) 0    
Total Federal 100    
Total State 3    
Total Income Taxes Paid (net of refunds) 103 (79) 58
Duke Energy Ohio | North Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Ohio | South Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Ohio | Florida      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Ohio | Indiana      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Ohio | Kentucky      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 3    
Duke Energy Ohio | Oklahoma      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Ohio | Other      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Indiana      
Effective Income Tax Rate Reconciliation [Line Items]      
Internal Revenue Service – payments/(refunds) 182    
Transferrable Credits – purchased/(sold) 0    
Total Federal 182    
Total State 26    
Total Income Taxes Paid (net of refunds) 208 (80) 90
Duke Energy Indiana | North Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Indiana | South Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Indiana | Florida      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Indiana | Indiana      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 26    
Duke Energy Indiana | Kentucky      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Indiana | Oklahoma      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Duke Energy Indiana | Other      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Piedmont      
Effective Income Tax Rate Reconciliation [Line Items]      
Internal Revenue Service – payments/(refunds) 55    
Transferrable Credits – purchased/(sold) 0    
Total Federal 55    
Total State 0    
Total Income Taxes Paid (net of refunds) 55 $ 48 $ 28
Piedmont | North Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Piedmont | South Carolina      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Piedmont | Florida      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Piedmont | Indiana      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Piedmont | Kentucky      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Piedmont | Oklahoma      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State 0    
Piedmont | Other      
Effective Income Tax Rate Reconciliation [Line Items]      
Total State $ 0    
v3.25.4
Income Taxes (Other Disclosures) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Unrecognized Tax Benefits [Roll Forward]      
Unrecognized tax benefits – January 1 $ 74 $ 62 $ 65
Gross decreases – tax positions in prior periods (2)   (15)
Gross increases – current period tax positions   12 12
Total changes     (3)
Unrecognized tax benefits – December 31 72 74 62
Amount that if recognized, would affect the effective tax rate or regulatory liability 67    
Valuation allowance 130 517  
Foreign Tax Credit      
Unrecognized Tax Benefits [Roll Forward]      
Valuation allowance 36    
Duke Energy Carolinas      
Unrecognized Tax Benefits [Roll Forward]      
Unrecognized tax benefits – January 1 25 21 17
Gross increases – current period tax positions   4 4
Total changes     4
Unrecognized tax benefits – December 31 25 25 21
Amount that if recognized, would affect the effective tax rate or regulatory liability 24    
Valuation allowance 1    
Progress Energy      
Unrecognized Tax Benefits [Roll Forward]      
Unrecognized tax benefits – January 1 29 24 19
Gross decreases – tax positions in prior periods (1)    
Gross increases – current period tax positions   5 5
Total changes     5
Unrecognized tax benefits – December 31 28 29 24
Amount that if recognized, would affect the effective tax rate or regulatory liability 26    
Duke Energy Progress      
Unrecognized Tax Benefits [Roll Forward]      
Unrecognized tax benefits – January 1 22 18 13
Gross decreases – tax positions in prior periods (2)    
Gross increases – current period tax positions   4 5
Total changes     5
Unrecognized tax benefits – December 31 20 22 18
Amount that if recognized, would affect the effective tax rate or regulatory liability 18    
Duke Energy Florida      
Unrecognized Tax Benefits [Roll Forward]      
Unrecognized tax benefits – January 1 7 6 5
Gross increases – current period tax positions 1 1 1
Total changes     1
Unrecognized tax benefits – December 31 8 7 6
Amount that if recognized, would affect the effective tax rate or regulatory liability 8    
Duke Energy Ohio      
Unrecognized Tax Benefits [Roll Forward]      
Unrecognized tax benefits – January 1 2 2 1
Gross increases – current period tax positions     1
Total changes     1
Unrecognized tax benefits – December 31 2 2 2
Amount that if recognized, would affect the effective tax rate or regulatory liability 2    
Duke Energy Indiana      
Unrecognized Tax Benefits [Roll Forward]      
Unrecognized tax benefits – January 1 3 3 2
Gross increases – current period tax positions     1
Total changes     1
Unrecognized tax benefits – December 31 3 3 3
Amount that if recognized, would affect the effective tax rate or regulatory liability 3    
Piedmont      
Unrecognized Tax Benefits [Roll Forward]      
Unrecognized tax benefits – January 1 13 11 9
Gross decreases – tax positions in prior periods (1)    
Gross increases – current period tax positions   2 2
Total changes     2
Unrecognized tax benefits – December 31 12 $ 13 $ 11
Amount that if recognized, would affect the effective tax rate or regulatory liability $ 11    
v3.25.4
Other Income and Expenses, Net (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Component Of Other Income Expense Nonoperating [Line Items]      
Interest income $ 51 $ 63 $ 29
AFUDC equity 328 233 198
Post-in-service equity returns 47 52 39
Nonoperating income, other 243 313 332
Other income and expense, net 669 661 598
Duke Energy Carolinas      
Component Of Other Income Expense Nonoperating [Line Items]      
Interest income 17 9 10
AFUDC equity 144 113 91
Post-in-service equity returns 26 31 19
Nonoperating income, other 71 94 118
Other income and expense, net 258 247 238
Progress Energy      
Component Of Other Income Expense Nonoperating [Line Items]      
Interest income 47 18 14
AFUDC equity 117 74 67
Post-in-service equity returns 19 20 19
Nonoperating income, other 104 123 101
Other income and expense, net 287 235 201
Duke Energy Progress      
Component Of Other Income Expense Nonoperating [Line Items]      
Interest income 39 14 9
AFUDC equity 100 61 52
Post-in-service equity returns 19 20 19
Nonoperating income, other 38 48 44
Other income and expense, net 196 143 124
Duke Energy Florida      
Component Of Other Income Expense Nonoperating [Line Items]      
Interest income 9 4 7
AFUDC equity 17 13 15
Post-in-service equity returns 0 0 0
Nonoperating income, other 64 69 56
Other income and expense, net 90 86 78
Duke Energy Ohio      
Component Of Other Income Expense Nonoperating [Line Items]      
Interest income 3 8 25
AFUDC equity 16 7 9
Post-in-service equity returns 0 1 1
Nonoperating income, other 5 3 6
Other income and expense, net 24 19 41
Duke Energy Indiana      
Component Of Other Income Expense Nonoperating [Line Items]      
Interest income 6 5 25
AFUDC equity 34 19 10
Post-in-service equity returns 2 1 0
Nonoperating income, other 19 37 41
Other income and expense, net 61 62 76
Piedmont      
Component Of Other Income Expense Nonoperating [Line Items]      
Interest income 19 19 19
AFUDC equity 17 21 21
Post-in-service equity returns 0 0 0
Nonoperating income, other 5 14 17
Other income and expense, net $ 41 $ 54 $ 57