SECURITIES AND EXCHANGE COMMISSION
Washington D.C. 20549

Form 11-K
ANNUAL REPORT

Pursuant to Section 15(d) of the
Securities Exchange Act of 1934

(Mark One):
ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
X EXCHANGE ACT OF 1934.

For the fiscal year ended December 31, 2001

OR

TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934.

For the transition period from               to
                               -------------    -------------

Commission file number       333-21011
                       ------------------

GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777
(FORMALLY METROPOLITAN EDISON COMPANY
EMPLOYEE SAVINGS PLAN FOR BARGAINING UNIT EMPLOYEES)
c/o FirstEnergy Corp.
76 South Main Street
Akron, Ohio 44308

(Full Title of the Plan and the Address of the Plan)

FirstEnergy Corp. (by way of merger with GPU, Inc.
which became effective on November 7, 2001)
76 South Main Street
Akron, Ohio 44308

(Name of Issuer of the securities held pursuant to the
Plan and address of its principal executive office)


GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY
IBEW LOCAL 777

REPORT ON AUDITS OF FINANCIAL STATEMENTS
for the years ended
December 31, 2001 and 2000


GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777

INDEX

                                                                           Pages

Independent Auditors' Report                                               1


Financial Statements:
  Statements of Net Assets Available for Plan
      Benefits as of December 31, 2001 and 2000                            2

  Statements of Changes in Net Assets Available
      for Plan Benefits for the years ended
      December 31, 2001 and 2000                                           3

  Notes to Financial Statements                                         4-12


INDEPENDENT AUDITORS' REPORT

To the Savings Plan Committee of the
GPU Companies Employee Savings Plan
For Employees Represented by IBEW Local 777:

We have audited the accompanying statements of net assets available for plan benefits of GPU Companies Employee Savings Plan for Employees Represented by IBEW Local 777 (the "Plan") as of December 31, 2001 and 2000, and the related statements of changes in net assets available for plan benefits for the years then ended. These financial statements are the responsibility of the Plan's management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with auditing standards generally accepted in the United States of America. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the net assets available for plan benefits of the Plan as of December 31, 2001 and 2000, and the changes in net assets available for plan benefits for the years then ended in conformity with accounting principles generally accepted in the United States of America.

Milligan & Company, LLC

April 11, 2002


GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777

STATEMENTS OF NET ASSETS
AVAILABLE FOR PLAN BENEFITS

December 31, 2001 and 2000

                                                       2001            2000
                                                       ----            ----

Investment in GPU Companies
     Master Savings Plan Trust
     at fair value                               $55,159,873      $65,104,570

Participant loans receivable                         725,649          806,358
                                                  ----------       ----------

Net assets available for plan
     benefits                                    $55,885,522      $65,910,928
                                                  ==========       ==========

The accompanying notes are an integral part of the financial statements.

2

GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777

STATEMENTS OF CHANGES IN NET ASSETS
AVAILABLE FOR PLAN BENEFITS

for the years ended December 31, 2001 and 2000

                                                     2001            2000*
                                                     ----            -----

Net Asset Balances, beginning of year            $65,910,928      $85,631,730
                                                  ----------       ----------

Additions to net assets attributed to:
   Contributions:
     Participants'                                 2,490,071        2,746,405
     Employer's                                      756,133          753,502
     Rollovers                                          -               4,071

   Interest on loans                                  59,362           70,079

   Investment income                                 958,537        3,635,381
                                                  ----------       ----------


            Total additions                        4,264,103        7,209,438
                                                  ----------       ----------

Deductions from net assets attributed to:
   Net depreciation in fair
      value of investments                         5,970,638        5,248,404

   Distributions and withdrawals                   8,191,403       21,341,649

   Transfers to affiliated
      savings plans                                  127,468          340,187
                                                 -----------      -----------

            Total deductions                      14,289,509       26,930,240
                                                 -----------      -----------

Net decrease                                     (10,025,406)     (19,720,802)
                                                 -----------      -----------

Net Asset Balances, end of year                 $ 55,885,522     $ 65,910,928
                                                 ===========      ===========

* Certain amounts have been reclassified to conform to current year presentation.

The accompanying notes are an integral part of the financial statements.

3

GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777

NOTES TO FINANCIAL STATEMENTS

1. General Description of the Plan:

The following description of the GPU Companies Employee Savings Plan for Employees Represented by IBEW Local 777 (Plan) provides only general information on the provisions of the Plan in effect as of December 31, 2001. Participants should refer to the Benefits Handbook, Plan document, and prospectus for a more complete description of the Plan's provisions.

General:

The Plan is a defined contribution plan. In general, all GPU employees represented by IBEW Local 777 (Company) are eligible to participate in the Plan if he/she is employed on a full-time basis or if the employee has completed at least 1,000 hours of service in a consecutive twelve-month period.

The Plan is intended to qualify as a cash or deferred profit-sharing plan under Sections 401(a) and 401(k) of the Internal Revenue Code. It is subject to the provisions of the Employee Retirement Income Security Act of 1974 (ERISA). A participant is eligible to transfer his/her account to an affiliated savings plan upon a change in his/her employment status.

The Plan contains additional employer contribution and employee savings features. Participants may "rollover" distributions received from other qualified plans to the Savings Plan.

Contributions:

The Plan provides two contribution options to a participant. Subject to certain limitations set forth in the Plan, the participant may elect (1) to have his/her base compensation reduced by an amount equal to any whole percentage (before-tax 401(k) contributions), which is contributed on behalf of the employee by the Company; and/or (2) to contribute by payroll deduction any whole percentage of base compensation (after-tax).

Matching Program:

The Company provides a matching contribution to the Plan on behalf of each participant, except certain temporary employees as defined in the Plan document. Effective May 1, 2001 the Company matched 75%, up from 70% prior to May 1, 2001, of a participant's aggregate contributions up to 4% of the participant's base compensation.

Continued

4

GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777
NOTES TO FINANCIAL STATEMENTS, Continued

1. General Description of the Plan, continued:

Administration of Plan Assets:

The Plan's assets, which consist principally of stocks and bonds are held by the Trustee of the Plan. Employer and participant contributions are held and managed by the Trustee, which invests cash received, reinvests interest and dividend income and makes distributions to participants.

Administrative Expenses:

The Company absorbs a small portion of administrative expenses. The majority of the administrative expenses, primarily Investment and Trustee Fees, are paid out of plan assets held in the GPU Companies Master Trust (Trust). Investment gains in the Trust are shown net of these Investment and Trustee Fees.

Investment Funds:

The Plan provides investment options that are participant-directed, which allows participants to choose among various investment alternatives. Participants may change their investment option at any time, subject to certain limitations.

Participants may elect to have their Plan accounts invested in one or more of the following investment options:

- Fidelity Puritan Fund: This fund seeks to obtain a balance between capital appreciation, preservation of capital, and generation of income.

- Fidelity Independence Fund*: This fund seeks to provide the opportunity for significant capital appreciation.

- Fidelity OTC Portfolio Fund: This fund seeks long-term capital appreciation by investing in securities that are traded in the over-the-counter (OTC) securities market.

- Fidelity Overseas Fund: The fund seeks long-term capital appreciation, primarily through investments in foreign securities.

- Interest Income Fund: The return objective of this fund is to provide a higher rate of return over time than the rate of return offered by money market funds. The Interest Income Fund invests in a diversified portfolio of investment contracts issued by only high-quality financial institutions as well as security-backed investment contracts supported by high quality fixed income securities.

* Name changed from Fidelity Retirement Growth Fund effective January 27, 2001.

Continued

5

GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777
NOTES TO FINANCIAL STATEMENTS, Continued

1. General Description of the Plan, continued:

Investment Funds, continued:

- Diversified Bond Fund: This fund seeks to match or exceed the returns of the Lehman Brothers Aggregate Index. The fund invests primarily in government, corporate, mortgage-backed and asset-backed securities. The fund invests in only high quality bonds, that is, those rated at least BBB by Standard & Poor's or Baa3 by Moody's Investors Service.

- Conservative Growth Portfolio: The investment objective of the Portfolio is to provide income from fixed income securities and growth of principal from stock funds. The Conservative Growth Portfolio has an asset allocation target of 35% equities and 65% fixed income securities.

- Moderate Growth Portfolio: The investment objective of this portfolio is to provide growth from stock funds and income from fixed income securities. The Moderate Growth Portfolio has an asset allocation target of 60% equities and 40% fixed income securities.

- Aggressive Growth Portfolio: The investment objective of this Portfolio is to provide growth primarily from stock funds with a small income component. The Aggressive Growth Portfolio has an asset allocation target of 80% equities and 20% fixed income securities.

- S&P 500 Index Fund: This fund seeks to match the performance of the Standard & Poor's 500 Index. The fund invests in all 500 stocks in the S&P 500 Index in proportion to their weighting in the Index. The fund may also hold 2-5% of its value in futures contracts (an agreement to buy or sell a specific security by a specific date at an agreed upon price).

- International Equity Fund: This is an actively managed fund that seeks to exceed the performance of the Morgan Stanley Capital International Europe, Australia, and Far East (MSCI EAFE) Index (unhedged) by investing in common stocks of companies headquartered outside the United States.

- Small Cap Equity Fund: This is an actively managed fund that seeks to consistently exceed the total return performance of the Russell 2500 Stock Index while maintaining a similar level of risk. The fund primarily invests in a portfolio of common stock of small to medium-sized domestic companies, which offer above-average growth potential.

Continued

6

GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777
NOTES TO FINANCIAL STATEMENTS, Continued

1. General Description of the Plan, continued:

Investment Funds, continued:

- FirstEnergy Stock Fund**: This fund's goal is to provide long-term growth through capital appreciation and dividend income. The FirstEnergy Stock Fund invests almost exclusively in FirstEnergy Corporation common stock. A small portion of assets is invested in money market securities to meet the fund's liquidity needs. Dividends paid on the FirstEnergy stock held in this fund are used to purchase additional common shares.

- Mutual Fund Window: The Mutual Fund Window (MFW) offers approximately 3500 mutual funds from more than 200 mutual fund families and approximately 600 no-transaction fee funds currently offered through State Street Brokerage Services, Inc.

Employee Participation in the Plan:

The number of participating employees with account balances invested in each investment option at December 31, 2001 and 2000 was as follows:

FUND #/FUND NAME                           NUMBER OF PARTICIPANTS
----------------                           ----------------------

                                             2001        2000
                                             ----        ----

10 Interest Income                            321         347
20 Diversified Bond                           110          72
30 Conservative Growth                         39          30
35 S&P 500 Index                              378         434
40 Moderate Growth                            293         327
45 Fidelity Puritan                            94          83
50 Aggressive Growth                          104          89
55 Fidelity Independence*                     159         173
60 Small Capital Equity                       111         100
65 Fidelity OTC                               132         137
70 International Equity                        68          66
75 Fidelity Overseas                           49          51
80 FirstEnergy Stock**                        123         131
85 Mutual Fund Window                          19          30

The total number of participants in the Plan at December 31, 2001 and 2000 was 745 and 811, respectively. This is less than the sum of the number of participants shown in the schedule above because many participants are investing in more than one option.

* Name changed from Fidelity Retirement Growth Fund effective January 27, 2001. ** GPU Stock Fund was converted to the FirstEnergy stock fund effective November 7, 2001.

Continued

7

GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777
NOTES TO FINANCIAL STATEMENTS, Continued

1. General Description of the Plan, continued:

Participant Accounts:

Each participant's account is credited with the participant's own contributions and with the Company's matching contributions. Each account maintained for a participant reflects the number of unitized shares and their value for each mutual fund and for the FirstEnergy Stock Fund. Any portion of a participant's account balance invested in the Mutual Fund Window reflects the number of shares and their value for each mutual fund. All income, gain or loss attributable to the investment of the balance of any account maintained for a participant is recorded to that account.

Vesting:

Participants are 100% vested at all times in their Plan accounts.

Distributions and Withdrawals:

A participant's Plan account balances become distributable upon termination of the participant's employment. Distributions of account balances in excess of $5,000 may be deferred, at the participant's election, up to age 70 1/2. If distribution of a participant's account balance has not otherwise started, it must begin by April 1st following the year in which the participant attained the age 70 1/2. Distributions generally are in the form of a single lump sum payment. The Plan permits withdrawals of account balances in the event of financial hardship or disability as defined in the Plan. A complete description of the Plan's terms and conditions for distributions and withdrawals can be found in the Plan document.

Loans to Participants:

The Plan provides that loans may be made to a participant from the participant's account balance subject to certain conditions. The minimum amount of each loan is $1,000 with the maximum being $50,000, or certain lesser amounts as described in the Plan. Interest on the loan is credited to the participant's account. The loans are secured by the balance in the participant's account. Principal and interest are paid ratably through monthly payroll deductions. The rate is determined periodically by the Administrative Committee based on current commercial rates. The interest rates for loans in excess of four years and ten months were 8.22% for the period January 1 through June 30, 2001 and 7.08% for the period July 1 through December 31, 2001. The interest rates for loans four years and ten months or less were 9.206% for the period January 1 through June 30, 2001 and 7.685% for the period July 1 through December 31, 2001.

Continued

8

GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777
NOTES TO FINANCIAL STATEMENTS, Continued

2. Summary of Significant Accounting Policies:

Plan Termination:

The Company reserves the right at any time to modify, suspend, amend or terminate the Plan. However, the Company cannot do so in such a manner that would cause or permit any part of the Plan's assets to be used for or diverted to purposes other than for the exclusive benefit of participants or their beneficiaries.

Basis of Accounting:

The financial statements of the plan are prepared under the accrual method of accounting.

Valuation of Investments:

The amounts shown herein as the investment in the GPU Companies Master Savings Plan Trust reflect the fair value of the assets held in such Trust and the Plan's relative interest in the Trusts. The Plan's participation is measured at its value at the beginning of the valuation period plus net external cash flow (contributions, distributions, etc.) experienced by the Plan during the valuation period. Investment income, net realized gain
(loss) on investments and net unrealized appreciation (depreciation) of investments are allocated to each participating plan based upon its accumulated monthly balance for each investment option (see Note 3).

Investment income from the GPU Companies Master Savings Plan Trust for the years ended December 31, 2001 and 2000, consists of interest and dividend income. The net appreciation (depreciation) in the fair value of investments consists of realized gains or losses and the unrealized appreciation (depreciation) on those investments in the GPU Companies Master Savings Plan Trust.

The fair market value of assets held by the Trust are determined as follows: Stocks and bonds are valued at their closing quoted market prices on the last business day of the year. Short-term group trust funds and insurance contracts are valued at cost plus accrued interest which approximates market.

Use of Estimates:

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires the plan administrator to make estimates and assumptions that affect certain reported amounts and disclosures. Accordingly, actual results may differ from those estimates.

Continued

9

GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777
NOTES TO FINANCIAL STATEMENTS, Continued

2. Summary of Significant Accounting Policies, continued:

Reclassifications

Certain prior year amounts have been reclassified to conform to the year ended December 31, 2001 presentation. These changes had no impact on previously reported results of operations or net assets.

3. Investments:

The investments reflected in the December 31, 2001 and 2000 Statements of Net Assets Available for Plan Benefits represent the Plan's 7.44% and 7.91% share, respectively, of total investments held in the GPU Companies Master Savings Plan Trust at December 31, 2001 and 2000.

At December 31, 2001 and 2000, the total fair value of investments held in the GPU Companies Master Savings Plan Trust are summarized as follows:

                                          2001              2000
                                          ----              ----
Aggressive Growth Portfolio          $ 19,770,358      $ 22,079,147
Fidelity Independence Fund**           75,069,658*      112,053,343*
Small Cap. Equity Fund                 24,511,906        24,104,318
Fidelity OTC Portfolio Fund            34,321,061        49,366,914*
International Equity Fund               7,003,697         8,693,456
Fidelity Overseas Fund                  6,803,090         9,775,960
FirstEnergy Stock Fund***              17,901,466        19,223,632
Mutual Fund Window                     17,897,551        25,793,558
Interest Income Fund                  181,148,895*      158,303,350*
Diversified Bond Fund                  32,978,648        20,306,629
Conservative Growth Portfolio           8,487,277         6,108,602
S&P 500 Index Fund                    160,161,418*      195,528,067*
Moderate Growth Portfolio             117,554,205*      133,738,773*
Fidelity Puritan Fund                  37,555,463*       37,530,036
                                      -----------       -----------

Total investments at fair value      $741,164,693      $822,605,785
                                      ===========       ===========

Total investments at cost            $749,027,738      $769,489,747
                                      ===========       ===========

* These investments represent 5% or more of the net assets available for benefits. ** Name changed from Fidelity Retirement Growth Fund effective January 27, 2001. *** GPU Stock Fund was converted to the FirstEnergy Stock Fund effective Novmeber 7, 2001.

Continued

10

GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777
NOTES TO FINANCIAL STATEMENTS, Continued

3. Investments, continued:

Based on participant investment options at December 31, 2001 and 2000 the Plan's investments were allocated as follows:

                              2001              2000
                            % BY FUND         % BY FUND
                            ---------         ---------

Interest Income               23.34%            20.22%
Diversified Bond               4.24%             1.43%
Conservative Growth            1.24%             1.07%
S&P 500 Index                 23.73%            26.67%
Moderate Growth               16.81%            16.89%
Fidelity Puritan               5.62%             4.52%
Aggressive Growth              2.34%             2.40%
Fidelity Independence*         9.32%            12.38%
Small Capital Equity           3.51%             2.74%
Fidelity OTC                   3.32%             4.17%
International Equity           1.37%             1.47%
Fidelity Overseas              0.83%             1.10%
FirstEnergy Stock**            3.61%             3.22%
Mutual Fund Window             0.72%             1.72%

The net investment losses in the GPU Master Savings Plan Trust for the years ended December 31, 2001 and 2000 were as follows:

                                 2001              2000
                                 ----              ----
Dividends                   $  3,031,891       $39,642,728
Interest income               11,395,260        10,904,328
Net depreciation in fair
   value of investments      (86,727,994)      (75,985,990)
                             -----------       -----------

Net investment losses       $(72,300,843)     $(25,438,934)
                             ===========       ===========

* Name changed from Fidelity Retirement Growth Fund effective January 27, 2001. ** GPU Stock Fund was converted to the First Energy Stock Fund effective November 7, 2001.

Continued

11

GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777
NOTES TO FINANCIAL STATEMENTS, Concluded

4. Party-In-Interest Transactions:

Certain Plan investments are shares of mutual funds managed by State Street Bank. State Street Bank is the trustee as defined by the Plan. Therefore, these transactions qualify as party-in-interest transactions.

5. Tax Status:

The Plan obtained its latest determination letter on February 4, 1998, in which the Internal Revenue Service stated that the Plan, as then designed, was in compliance with the applicable requirements of the Internal Revenue Code. The Plan has been amended since receiving the determination letter. However, the plan administrator and the plan's tax counsel believes that the Plan is currently designed and being operated in compliance with applicable requirements of the Internal Revenue Code. Therefore, no provision for income taxes has been included in the Plan's financial statements.

6. Plan Amendments:

Effective May 1, 2001, the Plan was amended and restated in order to incorporate an increased matching contribution. The Company agreed to increase the match from 70% to 75% of an employee's contributions up to 4% of base compensation.

The Plan was further amended, effective October 1, 2001 to incorporate FirstEnergy Merger Provisions. At the effective time of the merger between GPU Company and FirstEnergy Corporation, all shares of GPU Stock held in the GPU Stock Fund were automatically converted into the right to receive the merger consideration with respect to such shares. The merger consideration, which included both stock and cash in respect to the GPU Stock held in the GPU Stock Fund was reinvested in shares of FirstEnergy Corporation Stock. The effective date of the merger was November 7, 2001.

12

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the plan) have duly caused this annual report to be signed by the undersigned thereunto duly authorized.

FirstEnergy Corp.

GPU Companies Employee Savings Plan
for Employees Represented by
IBEW Local 777

Date:  June 21, 2002             By:  /s/ Richard J. LaFleur
                                      ----------------------------------------
                                       Richard J. LaFleur
                                       Chairman, Savings Plan Committee


EXHIBIT INDEX

FirstEnergy Corp.

GPU COMPANIES EMPLOYEE SAVINGS PLAN
FOR EMPLOYEES REPRESENTED BY IBEW LOCAL 777

Consent of Independent Accountants Exhibit 23


Exhibit 23

CONSENT OF INDEPENDENT ACCOUNTANTS

We consent to the incorporation by reference in the registration statement of FirstEnergy Corp. on Form S-8 (File No. 333-72764) of our report dated April 11, 2002, on our audit of the financial statements of the GPU Companies Employee Savings Plan for Employees Represented by IBEW Local 777 as of December 31, 2001 and 2000 and for the years then ended, which report is included in this Annual Report on Form 11-K.

MILLIGAN & COMPANY, LLC

105 N. 22nd Street, 2nd Floor
Philadelphia, Pennsylvania
June 21, 2002