File No. 70-9793

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                     POS AMC

                                 Amendment No. 4
                        (Post-Effective Amendment No. 1)
                                       to
                                    FORM U-l
                             APPLICATION/DECLARATION
                                      UNDER

                THE PUBLIC UTILITY HOLDING COMPANY ACT OF 1935
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                              FIRSTENERGY CORP.
                   OHIO EDISON COMPANY AND ITS SUBSIDIARIES
       THE CLEVELAND ELECTRIC ILLUMINATING COMPANY AND ITS SUBSIDIARIES
                THE TOLEDO EDISON COMPANY AND ITS SUBSIDIARIES
                          PENNSYLVANIA POWER COMPANY
                 AMERICAN TRANSMISSION SYSTEMS, INCORPORATED
                       NORTHEAST OHIO NATURAL GAS CORP.
                  FE ACQUISITION CORP. AND ITS SUBSIDIARIES
              FIRSTENERGY PROPERTIES, INC. AND ITS SUBSIDIARIES
       FIRSTENERGY FACILITIES SERVICES GROUP, LLC AND ITS SUBSIDIARIES
                                FE HOLDINGS, LLC
                                 FELHC, INC.
                   FIRSTENERGY SECURITIES TRANSFER COMPANY
                    FIRSTENERGY NUCLEAR OPERATING COMPANY
               FIRSTENERGY SOLUTIONS CORP. AND ITS SUBSIDIARIES
                         FIRSTENERGY GENERATION CORP.
               FIRSTENERGY VENTURES CORP. AND ITS SUBSIDIARIES
                MARBEL ENERGY CORPORATION AND ITS SUBSIDIARIES
                            CENTERIOR INDEMNITY TRUST
                            CENTERIOR SERVICE COMPANY
                         FIRSTENERGY SERVICE COMPANY
          JERSEY CENTRAL POWER & LIGHT COMPANY AND ITS SUBSIDIARIES
              PENNSYLVANIA ELECTRIC COMPANY AND ITS SUBSIDIARIES
               METROPOLITAN EDISON COMPANY AND ITS SUBSIDIARIES
                            YORK HAVEN POWER COMPANY



                    WAVERLY ELECTRIC POWER & LIGHT COMPANY
                    GPU CAPITAL, INC. AND ITS SUBSIDIARIES
                   GPU ELECTRIC, INC. AND ITS SUBSIDIARIES
              GPU DIVERSIFIED HOLDINGS, LLC AND ITS SUBSIDIARIES
                         GPU ENERTECH HOLDINGS, INC.
                      GPU POWER, INC. AND ITS SUBSIDIARIES
                         GPU ADVANCED RESOURCES, INC.
                              GPU SERVICE, INC.
                GPU TELCOM SERVICES, INC. AND ITS SUBSIDIARIES
                              GPU NUCLEAR, INC.
                      MYR GROUP, INC. AND ITS SUBSIDIARIES
                              76 SOUTH MAIN STREET
                                AKRON, OHIO 44308

     (Names of companies filing this statement and addresses of principal
                              executive offices)
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                                FirstEnergy corp.

        (Name of top registered holding company parent of applicants)
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         Leila L. Vespoli,                       Douglas E. Davidson,
         Senior Vice President and General       Esq.
         Counsel                                 Thelen Reid & Priest LLP
         FirstEnergy Corp.                       40 West 57th Street
         76 South Main Street                    New York, New York 10019
         Akron, Ohio 44308
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                 (Names and addresses of agents for service)

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ITEM 1.     DESCRIPTION OF PROPOSED TRANSACTIONS.
            ------------------------------------

            By Order dated October 29, 2001 in this proceeding  (Holding Co. Act
Release No. 27459) (the "Merger Order"), as supplemented by a supplemental order
dated November 8, 2001 (Holding  Company Act Release No. 27483),  the Commission
authorized  the  merger  between  FirstEnergy  Corp.  ("FirstEnergy"),  an  Ohio
corporation,  and GPU, Inc. ("GPU"), a Pennsylvania corporation. The merger (the
"Merger")  became  effective  on  November  7,  2001,  with  FirstEnergy  as the
surviving entity, and FirstEnergy  registered under the Act as a holding company
on the same day. As a result of the merger,  FirstEnergy  directly or indirectly
owns all of the outstanding  common stock of ten electric utility  subsidiaries,
Ohio Edison Company ("Ohio Edison"), The Cleveland Electric Illuminating Company
("Cleveland  Electric"),  The Toledo Edison Company ("Toledo Edison"),  American
Transmission  Systems,  Incorporated  ("ATSI"),  Jersey  Central  Power  & Light
Company  ("JCP&L"),  Pennsylvania  Electric  Company  ("Penelec"),  Metropolitan
Edison Company ("Met-Ed"), Pennsylvania Power Company ("Penn Power"), York Haven
Power  Company,  and Waverly  Electric  Power & Light  Company,  which  together
provide  service  to  approximately  4,300,000  retail  and  wholesale  electric
customers in a 37,200 square-mile area in Ohio, New Jersey and Pennsylvania; and
one gas utility subsidiary,  Northeast Ohio Natural Gas Corp.  ("NONGC"),  which
provides gas distribution and  transportation  service to approximately  [5,000]
customers in central and northeast  Ohio (these  subsidiaries  are  collectively
referred  to as the  "Utility  Subsidiaries").  FirstEnergy's  electric  and gas
utility  subsidiaries  are  referred  to  herein  collectively  as the  "Utility
Subsidiaries." Ohio Edison, Cleveland Electric,  Toledo Edison, Penn Power, ATSI
and NONGC are  referred to herein  collectively  as the "FE  Pre-Merger  Utility
Subsidiaries."1

            The  Merger  Order also  authorized  certain  FirstEnergy  associate
companies  to provide  services to the FE  Pre-Merger  Utility  Subsidiaries  at
prices not restricted to cost.  Specifically,  FirstEnergy  Facilities  Services
Group, LLC ("FE  Facilities")  was authorized to provide  maintenance and repair
services to FirstEnergy,  Ohio Edison and Toledo Edison. These arrangements,  as
well as extensions,  additions and  replacements  of these  arrangements  in the
ordinary  course of business (the "At Market  Service  Arrangements")  have been
authorized  to remain in place for a period  ending not later than  December 31,
2002.  The Merger Order  authorized  the exemption or waiver for these At Market
Services  under Section 13 of the Act from the cost standards of Rules 90 and 91
thereunder, as applicable.

            FE Facilities now requests that the Commission  issue a supplemental
order  extending  the  interim  exemption  granted  under the Merger  Order from
December 31, 2002 until June 30, 2003.  FE Facilities  requests  this  extension
because it needs additional time to implement internal cost accounting  systems.
FirstEnergy and its  subsidiaries  are currently  establishing a cost accounting
structure  and  supporting  computer  systems for  FirstEnergy  Service  Company
("Service  Company"),  which  will  function  as the  service  company  for  the

--------------------
1  FirstEnergy  also  directly  or  indirectly  holds  investments  in  numerous
non-utility  subsidiaries  that are  engaged  in a  variety  of  energy-related,
exempt, or otherwise functionally related non-utility  businesses.  Reference is
made to Appendix A to the Merger Order for a  description  of these  non-utility
subsidiaries.

                                       3



FirstEnergy system. FirstEnergy expects that the Service Company cost accounting
arrangement and the supporting computer system will be fully functional by April
1, 2003. FE Facilities  anticipates that cost accounting systems for the current
At Market  Service  Arrangements  will be established by June 30, 2003, and thus
make this extension request to provide for additional time.

            In  addition,  FE  Facilities  may seek a permanent  exemption  from
Section  13(b) of the Act and the at cost  rules  thereunder  for the At  Market
Service  Arrangements.  FirstEnergy  has been  following the  proceedings in the
pending Exelon Corp.  ("Exelon") docket,  file number 70-9645,  in which certain
non-utility  subsidiaries  of Exelon  are  seeking  a  permanent  Section  13(b)
exemption  based on facts and  circumstances  similar  to those of the At Market
Service  Arrangements.  If the Commission grants a permanent  exemption to those
subsidiaries  of Exelon,  FE  Facilities  may seek to rely on that  precedent in
seeking a permanent  exemption for the At Market  Service  Arrangements  in this
docket.

ITEM 2.     FEES, COMMISSIONS AND EXPENSES.
            ------------------------------

            FirstEnergy  estimates that the  additional  fees,  commissions  and
expenses incurred or to be incurred in connection with the proposed  transaction
will not exceed $2,500.

ITEM 3.     APPLICABLE STATUTORY PROVISIONS.
            -------------------------------

            Applicants  believe that  Section  13(b) of the Act and Rules 87, 90
and 91 thereunder may be applicable to the authorizations requester herein.

            The   authorization   requested   herein  is  also  subject  to  the
requirements of Rule 54. Rule 54 provides that in determining whether to approve
an  application  by a registered  holding  company  which does not relate to any
exempt wholesale  generator ("EWG") or "foreign utility company"  ("FUCO"),  the
Commission  shall not consider the effect of the  capitalization  or earnings of
any subsidiary which is an EWG or a FUCO upon the registered  holding company if
paragraphs (a), (b) and (c) of Rule 53 are satisfied.

            FirstEnergy  currently  meets all of the  conditions  of Rule 53(a),
except for clause (1). In the Merger Order, the Commission,  among other things,
authorized  FirstEnergy  to  invest  in EWGs  and  FUCOs  so that  FirstEnergy's
"aggregate  investment," as defined in Rule 53(a)(1), in EWGs and FUCOs does not
exceed $5 billion,  which  amount is above the level which would be permitted by
clause (1) of Rule 53(a) if such amount  were to be  currently  calculated.  The
Merger  Order also  specifies  that this $5 billion  amount may include  amounts
invested  in EWGs and  FUCOs by  FirstEnergy  and GPU at the time of the  Merger
Order ("Current Investments") and amounts relating to possible transfers to EWGs
of certain  generating  facilities owned by certain of  FirstEnergy's  operating
utilities  ("GenCo  Investments").  FirstEnergy  has  made the  commitment  that
through June 30, 2003, its aggregate investment in EWGs and FUCOs other than the
Current Investments and GenCo Investments ("Other  Investments") will not exceed
$1.5 billion.  The Commission has reserved  jurisdiction  over  investments that
exceed such amount.

                                       4



            As of June  30,  2002,  and on the same  basis  as set  forth in the
Merger  Order,   FirstEnergy's  aggregate  investment  in  EWGs  and  FUCOs  was
approximately $1.2 billion,2 an amount significantly below the $5 billion amount
authorized in the Merger Order.

            In any event,  even taking into  account the  capitalization  of and
earnings  from EWGs and FUCOs in which  FirstEnergy  currently  has an interest,
there  would  be no  basis  for  the  Commission  to  withhold  approval  of the
transactions proposed herein. With respect to capitalization,  since the date of
the Merger Order,  there has been no material  adverse  impact on  FirstEnergy's
consolidated capitalization resulting from FirstEnergy's investments in EWGs and
FUCOs. Additionally, the proposed transactions will not have any material impact
on FirstEnergy's  capitalization.  Further,  since the date of the Merger Order,
and,  after  taking into  account  the effects of the Merger,  there has been no
material change in FirstEnergy's level of earnings from EWGs and FUCOs.

            FirstEnergy  satisfies all of the other conditions of paragraphs (a)
and (b) of Rule 53. With respect to Rule 53(a)(2),  FirstEnergy  maintains books
and records in  conformity  with,  and  otherwise  adheres to, the  requirements
thereof.  With  respect to Rule  53(a)(3),  no more than 2% of the  employees of
FirstEnergy's  domestic public utility  companies  render  services,  at any one
time, directly or indirectly,  to EWGs or FUCOs in which FirstEnergy directly or
indirectly  holds an interest.  With respect to Rule 53(a)(4),  FirstEnergy will
continue to provide a copy of each application and certificate  relating to EWGs
and FUCOs and relevant  portions of its Form U5S to each  regulator  referred to
therein,  and will otherwise comply with the requirements thereof concerning the
furnishing of information. With respect to Rule 53(b), none of the circumstances
enumerated in subparagraphs (1), (2) and (3) thereunder have occurred.  Finally,
Rule 53(c) by its terms is inapplicable since the proposed  transaction does not
involve the issue or sale of a security to finance the  acquisition of an EWG or
FUCO.

ITEM 4.     REGULATORY APPROVALS.
            --------------------

            No state commission has  jurisdiction  with respect to any aspect of
the  requested  authorization,  and  no  Federal  commission,  other  than  your
Commission, has jurisdiction with any aspect thereof.

ITEM 5.     PROCEDURE.
            ---------

            FirstEnergy  requests that the Commission issue a supplemental order
approving the proposed  transaction at the earliest practicable date, but in any
event not later than December 31, 2002. It is further  requested that: (i) there
not  be  a  recommended  decision  by  an  Administrative  Law  Judge  or  other
responsible  officer  of  the  Commission,   (ii)  the  Division  of  Investment
Management  be  permitted  to  assist  in the  preparation  of the  Commission's
decision  and (iii)  there be no waiting  period  between  the  issuance  of the
Commission's order and the date on which it is to become effective.

--------------------
2     This $1.2 billion  amount  represents  Current  Investments  only. As of
June 30, 2002, FirstEnergy had no Genco Investments.

                                       5



ITEM 6.     EXHIBITS AND FINANCIAL STATEMENTS.
            ---------------------------------

            (a)   Exhibits:

                  (None)

            (b)   Financial Statements:

                  Omitted as not relevant to the proposed transaction.

ITEM 7.     INFORMATION AS TO ENVIRONMENTAL EFFECTS.
            ---------------------------------------

            (a) The  authorization  proposed  herein  does not  involve  a major
Federal action significantly affecting the quality of the human environment.

            (b) No federal agency has prepared or is preparing an  environmental
impact statement with respect to the authorization proposed herein.


                                   SIGNATURES
                                   ----------

            Pursuant to the  requirements  of the Public Utility Holding Company
Act of 1935,  as  amended,  the  undersigned  companies  have duly  caused  this
statement  to be signed on their  behalves  by the  undersigned  thereunto  duly
authorized.

         FIRSTENERGY CORP.
         OHIO EDISON COMPANY*
         THE CLEVELAND ELECTRIC ILLUMINATING COMPANY* THE TOLEDO EDISON COMPANY*
         PENNSYLVANIA POWER COMPANY AMERICAN
         TRANSMISSION SYSTEMS, INCORPORATED NORTHEAST OHIO NATURAL GAS CORP.
         FE ACQUISITION CORP.*
         FIRSTENERGY PROPERTIES, INC.*
         FIRSTENERGY FACILITIES SERVICES GROUP, LLC*
         FE HOLDINGS, LLC
         FELHC, INC.
         FIRSTENERGY SECURITIES TRANSFER COMPANY
         FIRSTENERGY NUCLEAR OPERATING COMPANY
         FIRSTENERGY SOLUTIONS CORP.*
         FIRSTENERGY GENERATION CORP.
         FIRSTENERGY VENTURES CORP.*
         MARBEL ENERGY CORPORATION*

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         CENTERIOR INDEMNITY TRUST
         CENTERIOR SERVICE COMPANY
         FIRSTENERGY SERVICE COMPANY
         JERSEY CENTRAL POWER & LIGHT COMPANY*
         PENNSYLVANIA ELECTRIC COMPANY*
         METROPOLITAN EDISON COMPANY*
         YORK HAVEN POWER COMPANY
         WAVERLY ELECTRIC POWER & LIGHT COMPANY
         GPU CAPITAL, INC.*
         GPU ELECTRIC, INC.*
         GPU DIVERSIFIED HOLDINGS, LLC*
         GPU ENERTECH HOLDINGS, INC.
         GPU POWER, INC.*
         GPU ADVANCED RESOURCES, INC.
         GPU SERVICE, INC.
         GPU TELCOM SERVICES, INC.*
         GPU NUCLEAR, INC.
         MYR GROUP, INC.*


                      By: ________________________________
                          Harvey L. Wagner
                          Vice President and Controller

Date: October 7, 2002

* including one or more subsidiaries

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