SEC File No. 70-10122

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

CERTIFICATE PURSUANT TO

RULE 24

OF PARTIAL COMPLETION OF

TRANSACTIONS

FirstEnergy Corp.


------------------------------------
                                     :
In the matter of                     :
FirstEnergy Corp.                    :        Certificate Pursuant
                                     :        to Rule 24 of Partial
                                     :        Completion of
                                     :        Transactions
                                     :

SEC File No. 70-10122 :
(Public Utility Holding Company Act :
of 1935) :

TO THE MEMBERS OF THE SECURITIES AND EXCHANGE COMMISSION:

The undersigned, FirstEnergy Corp. (FirstEnergy) hereby certifies pursuant to Rule 24 of the Rules and Regulations under the Public Utility Holding Company Act of 1935 (the Act), that certain of the transactions proposed in the Applications, as filed in SEC File No. 70-10122 have been carried out in accordance with the Commission's Orders dated June 30, 2003 as follows:

1. Balance Sheets and Income Statements for the FirstEnergy Nonutility Holding Company and its consolidated Subsidiaries for the quarter ended June 30, 2004 are attached as following exhibits:

Exhibit
-------
1-1  Consolidated   Balance  Sheet  and  Income  Statement  of  FirstEnergy
     Ventures Corp.
1-2  Consolidated   Balance  Sheet  and  Income  Statement  of  FirstEnergy

Facilities Services Group, LLC.
1-3 Balance Sheet and Income Statement of OES Ventures, Inc. - filed pursuant to request for confidential treatment.
1-4 Balance Sheet and Income Statement of Centerior Communications Holdings, Inc. - filed pursuant to request for confidential treatment.
1-5 Consolidated Balance Sheet and Income Statement of E-L Enterprises, Inc. - filed pursuant to request for confidential treatment. 1-6 Consolidated Balance Sheet and Income Statement of MARBEL HoldCo, Inc.
- filed pursuant to request for confidential treatment.

Balance Sheet and Income Statement of GPU Diversified Holdings LLC are reported on Form U-9C-3.

2. During the period April 1, 2004 through June 30, 2004, there was no Development Activity. Investments made during the second quarter 2004 are as follows:

Category                                      Investment
--------                                      -------------
                                            (In Thousands $)

Energy Related Company                         $   882
Exempt Wholesale Generators                    $16,032*
Financing Subsidiaries                         $53,309

* Non cash goodwill adjustment relating to income tax reserves.

3. During the second quarter of 2004, there were no guarantees made on behalf of other direct or indirect Subsidiaries of the FirstEnergy Nonutility Holding Companies.

1

4. During the second quarter of 2004, there were no services obtained by the FirstEnergy Nonutility Holding Companies, or any direct or indirect Subsidiary of the Nonutility Holding Companies from the Utility Subsidiaries.

5. A chart of the nonutility businesses, financing subsidiaries and nonsystem securities in which FirstEnergy and its subsidiaries are engaged in or have investments in of 10% or greater are identified below:

                                                                                 Type of
                                                                                 Type of
Name of Company                                                                 Subsidiary           % Ownership
---------------                                                                 ----------           -----------
American Transmission Systems, Incorporated (ATSI)                                  US                   100
Centerior Service Company (Inactive)                                                                     100
FE Acquisition Corp. (Inactive)                                                     NUHC                 100
    Mid-Atlantic Energy Development Co. (Inactive)                                                       100
FE Holdings, L.L.C. (Inactive)                                                                             -
FELHC, Inc.                                                                         ERC                  100
First Communications, LLC                                                           ETC                  65
FirstEnergy Facilities Services Group, LLC (FEFSG)                                  NUHC                 100
    Dunbar Mechanical, Inc.                                                         ERC                  100
    Edwards Electrical & Mechanical, Inc.                                           ERC                  100
    Elliott-Lewis Corporation                                                       ERC                  100
       A.A. Duckett, Inc. ERC 100 E-L Enterprises, Inc. NUHC 100
         Modern Air Conditioning, Inc.                                              ERC                  100
           Airdex Air Conditioning Corporation                                      ERC                  100
         R.L. Anderson, Inc. ERC 100 Sautter Crane Rental, Inc. ERC 100
    The Hattenbach Company                                                          ERC                  100
    L.H. Cranston and Sons, Inc.                                                    ERC                  100
    Roth Bros., Inc.                                                                ERC                  100
    R.P.C. Mechanical, Inc.                                                         ERC                  100
    Spectrum Controls Systems                                                       ERC                  100
FirstEnergy Nuclear Operating Company (FENOC)                                       ERC                  100
FirstEnergy Properties, Inc. (FirstEnergy Properties)                               RES                  100
    BSG Properties, Inc.                                                            RES                  100
FirstEnergy Securities Transfer Company                                             FS                   100
FirstEnergy Service Company (FECO)                                                  ERC                  100
FirstEnergy Solutions Corp. (FES)                                                   ERC                  100
    FirstEnergy Generation Corp. (GenCo)                                            EWG                  100
    FirstEnergy Engineering, Inc.                                                   ERC                  100
FirstEnergy Telecom Services, Inc.                                                  ETC                  100
FirstEnergy Ventures Corp. (FirstEnergy Ventures)                                   NUHC                 100
    Bay Shore Power Company                                                         ERC                  100
    Centerior Communications Holdings, Inc.                                         NUHC                 100
       Fiber Venture Equity, Inc.                                                   ETC                  100
       AFN Finance Company No. 3, LLC                                               ETC                  100
    Centerior Energy Services, Inc.                                                 ERC                  100
    Centerior Power Enterprises, Inc.                                                                    100
    Engineered Processes, Ltd.                                                      ERC                  50
    Eastroc Technologies, LLC                                                       ERC                  50
    FirstEnergy Telecommunications Corp.                                            ETC                  100
    Warrenton River Terminal, Ltd.                                                  ERC                  100

                                       2


                                                                                 Type of
Name of Company                                                                 Subsidiary           % Ownership
---------------                                                                 ----------           -----------

GPU Capital, Inc. (GPU Capital)                                                     FUCO                 100
    GPU Electric, Inc. (GPU Electric)                                               FUCO                 100
      GPU Argentina Services S.R.L.                                                 FUCO                 100
      EI UK Holdings, Inc.                                                          FUCO                 100
        Aquila Sterling Holdings LLC                                                FUCO                 20.1*
GPU Diversified Holdings LLC (GPUDH)                                                NUHC                 100
    GPU Solar, Inc.                                                                 ERC                  50
    GPU EnerTech Holdings, Inc.                                                     ERC                  100
    GPU Distributed Power, Inc.                                                     ERC                  100
GPU Nuclear, Inc. (GPUN)                                                            ERC                  100
    Private Fuel Storage LLC                                                        ERC                  10.1
GPU Power, Inc. (GPU Power)                                                         EWG                  100
    EI Canada Holding Limited                                                       EWG                  100
      EI Services Canada Limited                                                    EWG                  100
      EI Brooklyn Power Limited                                                     EWG                  100
        EI Brooklyn Investments Limited                                             EWG                  100
    International Power Advisors, Inc.                                              EWG                  100
    Syracuse Orange Partners LP                                                     EWG                    -
Jersey Central Power & Light Company (JCP&L)                                        US                   100
    JCP&L Transition Funding LLC                                                    FS                   100
    JCP&L Transition Funding II LLC                                                 FS                   100
    Saxton Nuclear Experimental Corporation                                         ERC                  44
MARBEL Energy Corporation (MARBEL)                                                  ERC                  100
    Marbel HoldCo, Inc.                                                             NUHC                 100
Metropolitan Edison Company (Met-Ed)                                                US                   100
    MetEd Funding LLC                                                               FS                   100
    Met-Ed Preferred Capital II, Inc.                                               FS                   100
      Met-Ed Capital II, L.P.                                                       FS                   100
        Met-Ed Capital Trust                                                        FS                   100
    Saxton Nuclear Experimental Corporation                                         ERC                  32
    York Haven Power Company                                                        US                   100
MYR Group Inc. (MYR)                                                                ERC                  100
    The L. E. Myers Company                                                         ERC                  100
    Hawkeye Construction, Inc.                                                      ERC                  100
    MYRcom, Inc.                                                                    ERC                  100
    MYRpower, Inc.                                                                  ERC                  100
    Great Southwestern Construction, Inc.                                           ERC                  100
    Harlan Electric Company                                                         ERC                  100
      Sturgeon Electric Company, Inc.                                               ERC                  100
      ComTel Technology, Inc.                                                       ERC                  100
    Power Piping Company                                                            ERC                  100
    D.W.Close Company, Inc.                                                         ERC                  100
Pennsylvania Electric Company (Penelec)                                             US                   100
    Nineveh Water Company                                                           ERC                  100
    Penelec Funding LLC                                                             FS                   100
    Penelec Preferred Capital II, Inc.                                              FS                   100
      Penelec Capital II, L.P.                                                      FS                   100
        Penelec Capital Trust                                                       FS                   100
    Saxton Nuclear Experimental Corporation                                         ERC                  24
    The Waverly Electric Light and Power Company                                    US                   100

                                       3


                                                                                  Type of
Name of Company                                                                  Subsidiary          % Ownership
---------------                                                                  ----------          -----------


Ohio Edison Company (OE)                                                            US                   100
    OES Capital, Inc.                                                               FS                   100
    OES Finance, Inc.                                                               FS                   100
    OES Nuclear, Inc.                                                               FS                   100
    OES Ventures, Inc.                                                              NUHC                 100
    Ohio Edison Financing Trust                                                     FS                   100
    Ohio Edison Financing Trust II (Inactive)                                       FS                   100
    Pennsylvania Power Company (Penn)                                               US                   100
         Penn Power Funding LLC                                                     FS                   100
    McDonald Corporate Tax Credit Fund Limited Partnership                          RES                  12.37
    McDonald Ohio Tax Credit Fund-1996 Limited Partnership                          RES                  42.13
    McDonald Ohio Tax Credit Fund-1998 Limited Partnership                          RES                  30.94
    Apollo Tax Credit Fund III, L.P.                                                RES                  33.33
    Apollo Tax Credit Fund IX, L.P.                                                 RES                  99.99
    Boston Capital Corporate Tax Credit Fund X, L.P.                                RES                  10.93
    Boston Capital Corporate Tax Credit Fund XIV, L.P.                              RES                  14
    Boston Capital Corporate Tax Credit Fund XVII, L.P.                             RES                  11.64
    Marion Senior Housing Limited Partnership                                       RES                  29.21
The Cleveland Electric Illuminating Company (CEI)                                   US                   100
    Cleveland Electric Financing Trust I                                            FS                   100
    Centerior Funding Corporation                                                   FS                   100
    The Toledo Edison Capital Corporation                                           FS                   10
The Toledo Edison Company (TE)                                                      US                   100
    The Toledo Edison Capital Corporation                                           FS                   90
AFN Finance Company No. 1, LLC                                                      ETC                  100
Kinetic Ventures I, LLC                                                             ERC                  11.11
Kinetic Ventures II, LLC                                                            ERC                  14.28
PowerSpan Corp.                                                                     ERC                  18.63
UMICO Holdings, Inc. (Inactive)                                                                          36

* EI UK Holdings, Inc. owns 50% voting (20.1% economic) interest in Aquila Sterling Holding LLC.

ERC      -      Energy Related Activity
ETC      -      Exempt Telecommunications Company
EWG      -      Exempt Wholesale Generator
FS       -      Financing Subsidiary
FUCO     -      Foreign Utility Company
NUHC     -      Nonutility Holding Company
RES      -      Real Estate
US       -      Utility Subsidiary

6. During the second quarter of 2004, there were no securities (including guarantees) issued by the FirstEnergy Nonutility Holding Companies and each Non-Exempt Subsidiary pursuant to Rule 52 or Rule 45(b), as applicable.

7. During the second quarter of 2004, there were no Anticipatory Hedge transactions entered into by any FirstEnergy Nonutility Holding Company, or any direct or indirect Non-Exempt Subsidiary of the Nonutility Holding Company.

4

SIGNATURE

The undersigned registered holding company has duly caused this quarterly report to be signed on its behalf by the undersigned officer thereunto duly authorized pursuant to the requirements of the Public Utility Holding Company Act of 1935.

FIRSTENERGY CORP.

August 24, 2004

By:          /s/ Harvey L. Wagner
      -------------------------------------
                 Harvey L. Wagner
           Vice President, Controller
          and Chief Accounting Officer
          (Principal Accounting Officer)

5

Index of Financial Statements and Exhibits to be Filed in EDGAR

Exhibit

1-1 Consolidated Balance Sheet and Income Statement of FirstEnergy Ventures Corp.

1-2 Consolidated Balance Sheet and Income Statement of FirstEnergy Facilities Services Group, LLC.

A Certificate of FirstEnergy Corp.


Exhibit 1-1

FIRSTENERGY VENTURES CORP.
Consolidated Balance Sheet (Unaudited)
June 30, 2004
(In Thousands)

ASSETS

CURRENT ASSETS:

    Cash and cash equivalents                                         $       -
    Receivables:
      Associated companies                                               17,471
      Other                                                               3,373
    Notes receivable from associated companies                           56,755
    Material and supplies                                                   542
    Prepayments and other                                                 4,381
                                                                       --------
                                                                         82,522
                                                                       --------

PROPERTY, PLANT AND EQUIPMENT:
    In service                                                          204,003
    Less: Accumulated provision for depreciation                         26,533
                                                                       --------
                                                                        177,470
    Construction work in progress                                            96
                                                                       --------
                                                                        177,566
                                                                       --------

INVESTMENTS:
    Other                                                                23,773
                                                                       --------
                                                                         23,773
                                                                       --------

DEFERRED CHARGES:
    Goodwill                                                                 67
    Other                                                                 2,915
                                                                       --------
                                                                          2,982
                                                                       ---------

         TOTAL ASSETS                                                 $ 286,843
                                                                       ========

LIABILITIES & CAPITALIZATION

CURRENT LIABILITIES:

    Currently payable long-term debt                                  $   3,304
    Notes payable to associated companies                                 1,083
    Accounts payable
      Other                                                                 335
      Associated companies                                                  492
    Accrued taxes                                                         9,468
    Accrued interest                                                      2,925
    Other                                                                    26
                                                                       --------
                                                                         17,633
                                                                       ---------

CAPITALIZATION:
    Common stockholder's equity                                         115,363
    Long-term debt                                                      137,629
                                                                       --------
                                                                        252,992
                                                                       --------

DEFERRED CREDITS:
    Accumulated deferred income taxes                                     7,409
    Other                                                                 8,809
                                                                       --------
                                                                         16,218
                                                                       --------

         TOTAL LIABILITIES & CAPITALIZATION                           $ 286,843
                                                                       ========


Exhibit 1-1

FIRSTENERGY VENTURES CORP.
Consolidated Statement of Operations (Unaudited)

(In Thousands)

                                                  Three Months      Six Months
                                                     Ended             Ended
                                                  June 30, 2004    June 30, 2004
                                                  -------------    -------------


REVENUES                                            $   9,797       $  18,478

EXPENSES:

    Fuel expense                                          943           2,108
    Other operating expenses                            3,192           6,635
    Provision for depreciation
       and amortization                                 2,559           5,116
    General taxes                                          23              47
                                                       ------          ------
         Total expenses                                 6,717          13,906
                                                       ------          ------

INCOME BEFORE INTEREST
  & INCOME TAXES                                        3,080           4,572

NET INTEREST CHARGES:

    Interest expenses                                   2,249           4,506
    Capitalized interest                                    -               -
                                                      -------          ------
         Net interest charges                           2,249           4,506
                                                      -------          ------

INCOME TAXES                                              366              45
                                                      -------          ------

NET INCOME                                          $     465       $      21
                                                     ========          ======


Exhibit 1-2

FIRSTENERGY FACILITIES SERVICES GROUP, LLC
Consolidated Balance Sheet (Unaudited)
June 30, 2004
(In Thousands)

ASSETS

CURRENT ASSETS:

    Cash and cash equivalents                                     $   9,837
    Receivables:
      Associated companies                                                -
      Other                                                          93,828
    Material and supplies                                             8,051
    Prepayments and other                                               988
                                                                   --------
                                                                    112,704
                                                                   --------

INVESTMENTS:
    Nonutility property, net                                         24,314
    Other                                                               746
                                                                   --------
                                                                     25,060
                                                                   --------

DEFERRED CHARGES:
    Goodwill                                                         36,471
    Accumulated deferred income tax benefits                         28,800
    Other                                                                 4
                                                                   --------
                                                                     65,275
                                                                   --------

         TOTAL ASSETS                                             $ 203,039
                                                                   ========

LIABILITIES & CAPITALIZATION

CURRENT LIABILITIES:

    Currently payable long-term debt                              $     497
    Short-term borrowings                                                 -
    Notes payable to associated companies                             4,408
    Notes payable other                                               2,911
    Accounts payable
      Other                                                          41,266
      Associated companies                                              549
    Accrued taxes                                                     3,496
    Other                                                            15,523
                                                                   --------
                                                                     68,650
                                                                   --------

CAPITALIZATION:
    Common stockholder's equity                                     127,130
    Long-term debt                                                    7,259
                                                                   --------
                                                                    134,389
                                                                   --------


         TOTAL LIABILITIES & CAPITALIZATION                       $ 203,039
                                                                   ========


Exhibit 1-2

FIRSTENERGY FACILITIES SERVICES GROUP, LLC
Consolidated Statement of Operations (Unaudited)

(In Thousands)

                                               Three Months      Six Months
                                                  Ended             Ended
                                               June 30, 2004    June 30, 2004
                                               -------------    -------------


Revenues                                          $ 97,036         $182,008

Cost of revenues                                    85,486          162,033
                                                   -------          -------

Gross margin                                        11,550           19,975

Selling, general and administrative
    expenses                                         7,276           17,616
Depreciation                                         1,146            2,333
                                                   -------          -------
                                                     3,128               26

Goodwill impairment                                      -                -
Purchase agreement incentive plans                      34               67
                                                   -------          -------

Operating income/(loss)                              3,094              (41)

Interest income                                         30              125
Interest expense                                      (260)            (450)
Gain on sale of fixed assets                           501              523
Other income/(expense), net                         (1,323)              88
                                                   -------          -------
Total other income/(expense)                        (1,052)             286
                                                   -------          -------

Income before income taxes                           2,042              245

Income tax/(benefit)                                   585             (141)
                                                   -------          -------

Net income                                        $  1,457         $    386
                                                   =======          =======


Exhibit A

FirstEnergy Corp.
76 South Main Street, Akron, Ohio 44308

Certificate

Pursuant to the requirements of Rule 24 of the Public Utility Holding Company Act of 1935, the undersigned certifies that:

A copy of certificate pursuant to Rule 24 related to FirstEnergy Corp.'s Nonutility Holding Company activities, for the period ended March 31, 2004, was filed with the New Jersey and Pennsylvania state commissions having jurisdiction over the electric retail rates of the company's public utility subsidiary companies. As requested by the Ohio state commission, letter was sent to notify the commission having jurisdiction over the electric retail rates of the company's public utility subsidiary companies of the URL address where the filing could be accessed on the SEC Web site.

The names and addresses of these state commissions are as follows:

New Jersey Division of Energy Board of Public Utilities Two Gateway Center
Newark, NJ 07102

Commonwealth of Pennsylvania* Public Utility Commission P.O. Box 3265 Harrisburg, PA 17105-3265

The Public Utilities Commission of Ohio 180 E. Broad Street
Columbus, Ohio 43215-3793

* A conformed copy of the publicly available report was filed with the Pennsylvania Public Utility Commission.

FirstEnergy Corp.

August 24, 2004

By:          /s/ Harvey L. Wagner
      ---------------------------------------
                 Harvey L. Wagner
           Vice President, Controller
          and Chief Accounting Officer
          (Principal Accounting Officer)

Note: Pennsylvania Electric Company (Penelec) is also subject to retail rate ---- regulation by the New York Public Service Commission with respect to retail service to approximately 3,700 customers in Waverly, New York served by Waverly Electric Power & Light Company, a Penelec subsidiary. Waverly Electric's revenues are immaterial, accounting for less than 1% of Penelec's total operating revenues.