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                  SECURITIES AND EXCHANGE COMMISSION
                        WASHINGTON, D. C. 20549
                               FORM 10-K/A

                             AMENDMENT NO. 1

(Mark One)

          [X]  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
                 OF THE SECURITIES EXCHANGE ACT OF 1934
               For the fiscal year ended December 31, 1999
                                  OR
        [ ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                 OF THE SECURITIES EXCHANGE ACT OF 1934

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




Commission      Registrant; State of Incorporation;    I.R.S. Employer
File Number       Address; and Telephone Number        Identification No.
-----------     -----------------------------------   ------------------

333-21011       FIRSTENERGY CORP.                        34-1843785
                (An Ohio Corporation)
                76 South Main Street
                Akron, OH  44308
                Telephone (800)736-3402


1-2578          OHIO EDISON COMPANY                      34-0437786
                (An Ohio Corporation)
                76 South Main Street
                Akron, OH  44308
                Telephone (800)736-3402


1-2323          THE CLEVELAND ELECTRIC ILLUMINATING      34-0150020
                COMPANY
                (An Ohio Corporation)
                c/o FirstEnergy Corp.
                76 South Main Street
                Akron, OH  44308
                Telephone (800)736-3402


1-3583          THE TOLEDO EDISON COMPANY                34-4375005
                (An Ohio Corporation)
                c/o FirstEnergy Corp.
                76 South Main Street
                Akron, OH  44308
                Telephone (800)736-3402


1-3491          PENNSYLVANIA POWER COMPANY               25-0718810
                (A Pennsylvania Corporation)
                1 East Washington Street
                P. O. Box 891
                New Castle, PA 16103
                Telephone (412)652-5531


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       SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT:

                                   None


          Indicate by check mark if disclosure of delinquent filers pursuant to
Item 405 of Regulation S-K is not contained herein, and will not be contained,
to the best of registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K.   (X)
                                        ---

          Indicate by check mark whether the registrant (1) has filed all
reports required to be filed by Section 13 or 15(d) of the Securities Exchange
Act of 1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days:
  Yes (X) No ( )
      ---    ---

          State the aggregate market value of the voting stock held by non-
affiliates of the registrant:  $4,238,859,520 as of March 10, 2000. Indicate
the number of shares outstanding of each of the registrant's classes of common
stock, as of the latest practicable date:

                                                          OUTSTANDING
                  CLASS                                AT MARCH 24, 2000
                  -----                                -----------------

     FirstEnergy Corp., $.10 par value                    231,119,841
     Ohio Edison Company, $9 par value                            100
     The Cleveland Electric Illuminating Company,
      no par value                                         79,590,689
     The Toledo Edison Company, $5 par value               39,133,887
     Pennsylvania Power Company, $30 par value              6,290,000

FirstEnergy Corp. is the sole holder of Ohio Edison Company, The Cleveland
Electric Illuminating Company and The Toledo Edison Company common stock; Ohio
Edison Company is the sole holder of Pennsylvania Power Company common stock.


Documents incorporated by reference (to the extent indicated herein):

                                               PART OF FORM 10-K INTO WHICH
                DOCUMENT                          DOCUMENT IS INCORPORTED
                --------                       ----------------------------

FirstEnergy Corp. Annual Report to
Stockholders for the fiscal year ended
December 31, 1999 (Pages 16-47)                           Part II

Proxy Statement for 2000 Annual Meeting
of Stockholders to be held April 27, 2000                 Part III

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        SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:

                                                       Name of Each Exchange
     Registrant          Title of Each Class            on Which Registered
     ----------    --------------------------------   -----------------------

FirstEnergy Corp.  Common Stock, $.10 par value       New York Stock
                                                      Exchange

Ohio Edison
 Company           Cumulative Preferred Stock,
                   $100 par value
                          3.90% Series                All series registered
                          4.40% Series                on New York Stock
                          4.44% Series                Exchange and Chicago
                          4.56% Series                Stock Exchange


                   Cumulative Preferred Stock,
                   $25 par value
                          7.75% Series                Registered on New York
                                                      Stock Exchange and
                                                      Chicago Stock Exchange

The Cleveland      Cumulative Serial Preferred
Electric           Stock, without par value:
Illuminating              $7.40 Series A              All series registered
Company                   $7.56 Series B              on New York Stock
                          Adjustable Rate, Series L   Exchange


                          Depository Shares:
                            1993 Series A, each       New York Stock
                                                      Exchange
                            share representing
                            1/20 of a share of
                            Serial Preferred Stock,
                            $42.40 Series T (without
                            par value)

The Toledo Edison  Cumulative Preferred Stock, par
Company            value $100 per share:
                          4-1/4% Series               All series registered
                          8.32%  Series               on American Stock
                          7.76%  Series               Exchange
                            10%  Series

                   Cumulative Preferred Stock, par
                   value  $25 per share:
                          8.84%  Series               All series registered
                         $2.365  Series               on New York Stock
                         Adjustable Rate, Series A    Exchange
                         Adjustable Rate, Series B

                   First Mortgage Bonds:
                          8% Series due 2003          All series registered
                                                      on New York Stock
                                                      Exchange

Pennsylvania       Cumulative Preferred Stock,
Power              $100 par value:
Company                   4.24% Series                All series registered
                          4.25% Series                on Philadelphia Stock
                          4.64% Series                Exchange, Inc.

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    SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT: (Cont'd)


          This combined Form 10-K is separately filed by FirstEnergy Corp.,
Ohio Edison Company, Pennsylvania Power Company, The Cleveland Electric
Illuminating Company and The Toledo Edison Company. Information contained
herein relating to any individual registrant is filed by such registrant on its
own behalf. No registrant makes any representation as to information relating
to any other registrant, except that information relating to any of the four
FirstEnergy subsidiaries is also attributed to FirstEnergy.

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AMENDMENT NO. 1



          The following item has been amended to update the Executive Officers
section on pages 11-13 of Item 1 to include an officer not listed in the
original filing:

ITEM 1.  BUSINESS

Executive Officers

          The executive officers are elected at the annual organization meeting
of the Board of Directors, held immediately after the annual meeting of
stockholders, and hold office until the next such organization meeting, unless
the Board of Directors shall otherwise determine, or unless a resignation is
submitted.

                               Position Held During
    Name         Age              Past Five Years                   Dates
    ----         ---   -------------------------------------     -----------
H. P. Burg       53    Chairman of the Board and Chief
                        Executive Officer                        2000-present
                       President and Chief Executive Officer     1999-2000
                       President and Chief Operating Officer     1998-1999
                       President and Chief Financial Officer     1997-1998
                       President, Chief Operating Officer and
                        Chief Financial Officer-OE               1996-1997
                       Senior Vice President and Chief
                        Financial Officer-OE                     *-1996

A. J. Alexander  48    President                                 2000-present
                       Executive Vice President and
                        General Counsel                          1997-2000
                       Senior Vice President and General
                        Counsel-OE                               *-1997

E. T. Carey      57    Vice President - Distribution             1997-present
                       Vice President - Regional Operations
                        and Customer Service-OE                  1995-1997
                       Vice President - Marketing and
                        Customer Service Support-OE              *-1995

M. B. Carroll    48    Vice President - Corporate Affairs        1997-present
                       Manager - Sandusky Area-OE                *-1997

K. W. Dindo      50    Vice President - Energy Services          1998-present
                       Vice President and Controller -
                        Caliber System, Inc.                     *-1998

D. S. Elliott    45    Vice President - Sales and Marketing      1997-present
                       Manager - FirstEnergy Services - OE       1997
                       Manager - Eastern Division - OE           1996-1997
                       Manager - Youngstown Division - OE        *-1996

A. R. Garfield   61    Senior Vice President                     2000-present
                       Vice President - Business Development     1997-2000
                       Vice President - System Operations - OE   *-1997

J. A. Gill       63    Senior Vice President - Administrative
                        Services                                 1998-present
                       Vice President - Administrative Services  1997-1998
                       Vice President - Administration - OE      *-1997

K. J. Keough     40    Vice President - Business Planning &
                        Ventures                                 1999-present
                       Partner - McKinsey & Company              1995-1999
                       Associate - McKinsey & Company            *-1995

R. H. Marsh      49    Vice President and Chief Financial
                        Officer                                  1998-present
                       Vice President - Finance                  1997-1998
                       Treasurer - OE                            *-1997

G. L. Pipitone   50    Vice President - Fossil Production        1997-present
                       Vice President - Generation and
                        Transmission - OE                        1996-1997
                       Manager - Akron Division - OE             *-1996

S. F. Szwed      47    Vice President - Transmission             1997-present
                       Vice President - Engineering & Planning
                        - Centerior Service Company              1995-1997
                       Director - System Planning & Operations
                        - Centerior Service Company              *-1995

L. L. Vespoli    40    Vice President and General Counsel        2000-present
                       Associate General Counsel                 1997-2000
                       Senior Attorney - OE                      1995-1997
                       Attorney - OE                             *-1995

N. C. Ashcom     52    Corporate Secretary                       1997-present
                       Secretary - OE                            *-1997


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T. C. Navin      42    Treasurer                                 1998-present
                       Assistant Treasurer                       1998-1998
                       Director, Treasury Services               1998-1998
                       Director, Asset Strategy                  1997-1998
                       Staff Business Analyst - OE               1997-1997
                       Senior Business Analyst - OE              1995-1997
                       Senior Planning Analyst - OE              *-1995

H. L. Wagner     47    Controller                                1997-present
                       Comptroller - OE                          *-1997

Except for H. P. Burg, A. J. Alexander, M. B. Carroll, K. W. Dindo, D. S.
Elliott and K. J. Keough, the officers above hold the same office for
FirstEnergy, OE, CEI and TE.
Except for R. Joseph Hrach holding the office of President and J. A. Gill and
A. R. Garfield holding the offices of Vice President, and except for H. P.
Burg, A. J. Alexander, M. B. Carroll, K. W. Dindo, D. S. Elliott and K. J.
Keough, the officers above hold the same offices for Penn.

* Indicates position held at least since January 1, 1995.

          At December 31, 1999, the Company's nonutility subsidiaries and the
Companies had a total of 13,461 employees consisting of the following: Company
- 1,942, OE - 1,839, CEI - 1,694, TE - 977, Penn - 895, FE Services - 409,
FENOC - 2,278, FE Facilities - 3,383 and MARBEL - 44 employees.

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                                SIGNATURES


          Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed
on its behalf by the undersigned, thereunto duly authorized.


                                      FIRSTENERGY CORP.


                                      BY /s/  H. Peter Burg
                                              -----------------------------
                                              H. Peter Burg
                                              Chairman of the Board
                                              and Chief Executive Officer

Date:  April 27, 2000


          Pursuant to the requirements of the Securities Exchange Act of 1934,
this report has been signed below by the following persons on behalf of the
registrant and in the capacities and on the date indicated:


/s/  H. Peter Burg                       /s/  Anthony J. Alexander
-------------------------------------    ----------------------------------
     H. Peter Burg                            Anthony J. Alexander
     Chairman of the Board                    President and Director
     and Chief Executive Officer
     and Director (Principal
     Executive Officer)

/s/  Richard H. Marsh                    /s/  Harvey L. Wagner
-------------------------------------    ----------------------------------
     Richard H. Marsh                         Harvey L. Wagner
     Vice President and                       Controller
     Chief Financial Officer                  (Principal Accounting Officer)
    (Principal Financial Officer)

/s/  Carol A. Carwright                  /s/  Glenn H. Meadows
-------------------------------------    ----------------------------------
     Carol A. Cartwright                      Glenn H. Meadows
     Director                                 Director

/s/  William F. Conway                   /s/  Paul J. Powers
-------------------------------------    ----------------------------------
     William F. Conway                        Paul J. Powers
     Director                                 Director


/s/  Robert B. Heisler, Jr.              /s/  Robert C. Savage
-------------------------------------    ----------------------------------
     Robert B. Heisler, Jr.                   Robert C. Savage
     Director                                 Director

/s/  Robert L. Loughhead                 /s/  George M. Smart
-------------------------------------    ----------------------------------
     Robert L. Loughhead                      George M. Smart
     Director                                 Director

/s/  Russell W. Maier                    /s/  Jesse T. Williams, Sr.
-------------------------------------    ----------------------------------
     Russell W. Maier                         Jesse T. Williams, Sr.
     Director                                 Director


Date:  April 27, 2000

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