March 31, 1999





Mr. Charles Bayless
Chairman
Illinois Power Company
500 South 27th Street
Decatur, Illinois 62521

     Re: Interim Agreement Relative to the Clinton Nuclear Power Station

Dear Mr. Bayless:

         Reference is hereby made to that  certain  Agreement  between  Illinois
Power Company  ("IP") and PECO Energy  Company  ("PECO") dated as of January 15,
1998, as amended by that certain Incentive  Compensation  Agreement to Amend the
Management  Services  Agreement  dated  as of May 19,  1998  (collectively,  the
"Management Agreement"),  whereby PECO has been providing management services to
IP in connection  with the restart of IP's 930 MWE Clinton Nuclear Power Station
("Clinton").  PECO and IP have been in discussions concerning the possibility of
a sale or abandonment (hereinafter,  "sale") by IP of Clinton to PECO or AmerGen
Energy Company ("Buyer"),  a nuclear operating company owned by PECO and British
Energy.  The parties intend  promptly to negotiate a Definitive  Agreement which
will contain the definitive terms and conditions relative to the sale of Clinton
and additionally to negotiate  certain Ancillary  Agreements,  including a Power
Purchase Agreement ("PPA") and Interconnection  Agreement, which will be entered
into in connection  with the sale.  The purpose of this Interim  Agreement is to
(i) set forth certain  rights,  obligations and agreements of the parties during
the term of this Interim  Agreement,  (ii) provide for certain amendments to the
Management  Agreement  which are set forth in an Amendment No. 2 effective April
1, 1999, to be executed by IP and PECO in the form attached hereto as Exhibit A,
(iii)  provide for the  execution by IP. PECO and the  designated  Chief Nuclear
Officer  of  Clinton  of a Leased  Employee  Agreement  of even date in the form
attached  hereto as Exhibit B, (iv) provide for the  modification by the parties
of the Confidentiality Agreement dated March 12, 1999 attached hereto as Exhibit
C, to  provide  for an  extension  of the  Exclusivity  Period as  described  in
Paragraph 4 hereof,  and (v) to  establish  certain  business  points which will
guide the parties in their negotiation of the Definitive Agreement.

         1.    Negotiation of Definitive Agreement and Ancillary Agreements

            This  Interim  Agreement  shall  become  effective  on the date (the
"Effective  Date") that this  Interim  Agreement is ratified and approved by the
Board  of  Directors  of  IP.  Following  the  Effective  Date  and  during  the
Exclusivity  Period, IP and the Buyer shall use their respective best efforts to
negotiate the  Definitive  Agreement and all Ancillary  Agreements  necessary or
desirable to complete and provide for the sale of Clinton by IP to Buyer.  Buyer
is completing due diligence of Clinton, and IP is making available to Buyer such


information, including confidential information, as Buyer has to date reasonably
requested.  The  parties  will  endeavor  to  complete  the  negotiation  of the
Definitive  Agreement and Ancillary Agreements during the Exclusivity Period but
the  parties  will have no  obligations  to each  other  except as  specifically
provided for in this  Interim  Agreement,  the  Confidentiality  Agreement,  the
Management  Agreement  as  amended  by  Amendment  No. 2 thereto  and the Leased
Employee  Agreement,  and as  may  hereinafter  be  provided  by the  Definitive
Agreement and the Ancillary  Agreements.  Without in any way binding the parties
hereto (the parties being bound with respect to these matters only to the extent
and as provided for in the Definitive  Agreement as may hereafter be executed by
the  parties),  it is intended that the  Definitive  Agreement and the Ancillary
Agreements  thereto  will  reflect the  following  business  points  between the
parties  as such  business  points  may be  amplified  or  supplemented  through
negotiation  of the  parties  and set  forth  in the  Definitive  Agreement  and
Ancillary Agreements:

            (a)   Purchase Price

            At the closing of the sale of Clinton under the Definitive Agreement
(the "Closing"),  which Closing shall be within ten (10) days after satisfaction
or  waiver  of all  conditions  precedent  to the  Closing,  Buyer  will  pay IP
$20,000,000  for  all of  IP's  right,  title  and  interest  in and to  Clinton
including all IP equipment, spare parts, fixtures,  inventory,  nuclear fuel and
other  property of any kind  necessary  for the  operation  and  maintenance  of
Clinton. IP has indicated that it desires to exclude from the sale certain lands
and  facilities  which are not  necessary  for the safe,  efficient and economic
operation of Clinton.  The  Definitive  Agreement  shall identify the particular
portions of the  Clinton  site and  facilities  which IP and Buyer agree will be
excluded from the sale,  subject to  appropriate  conditions to meet  regulatory
requirements.  Buyer  shall  have  the  right  to  contract  for  any  necessary
transmission  service under IP's Open Access Transmission Tariff and for back-up
power to the site consistent with NRC requirements and current arrangements.

            (b)   PPA

            Ancillary to the  Definitive  Agreement  will be a PPA providing for
IP's  purchase  of energy  from  Clinton  for the period  from  Closing  through
December  31,  2004.   In  addition  to  such  other   terms,   conditions   and
amplifications  the parties may  negotiate,  the PPA will reflect the  following
basic understandings:

          IP will  purchase and the Buyer will deliver to IP on an  as-available
(or Unit  output)  hourly  basis the  following  percentages  of the  actual net
electric output of Clinton:

             Year      1999      2000      2001      2002      2003      2004
          % output      80        xx        xx        xx        xx        xx

          IP will pay for such output  (with  pricing  reflecting  all  charges,
including energy and capacity) at the following general price levels,  provided,
however,  that such  prices  will be  modified  by mutual  agreement  to reflect
seasonality  (canted to strongly  incentivize  the Buyer to  maximize  output at
Clinton  during the summer  months) and "on" and "off" peak periods on an hourly
basis:

              Year     1999      2000      2001      2002      2003      2004
     Price per MWH     $xx       $xx       $xx       $xx       $xx       $xx


          (c)   Decommissioning Liability

          At the Closing,  IP will make or cause to be made such additional cash
deposits  as  are   necessary  to  the  Clinton   Qualified   and   Nonqualified
Decommissioning  Trusts  (together  with any other trusts into which the current
trusts may be  liquidated  or the current  trust funds may be  transferred,  the
"Decommissioning  Trusts") in order to ensure that the  liquidated  value of the
aggregate  trust  corpus  of  the  Decommissioning   Trusts  is  not  less  than
$95,000,000.  On each of the next six (6) anniversary  dates of the Closing,  IP
wil  deposit  or  cause  to be  deposited  an  additional  $30,000,000  in  such
Decommissioning  Trusts  subject  to the  NRC  approval  of such  funding  as an
acceptable  method of  demonstrating  reasonable  assurance  of such  funding in
accordance  with  10 CFR  ss.50.75  (e)(v)  and  IP  providing  such  additional
assurance  of payment as may be mutually  agreed to by IP and Buyer.  IP and the
Buyer shall  cooperate in obtaining  federal and state approvals to permit these
additional  contributions  to be made to the  Qualified  Trust  contained in the
Decommissioning  Trusts to the maximum  extent  practicable.  The parties intend
that  to  the  extent   practicable   the  Buyer   will  take   control  of  the
decommissioning  funds,  but in any event the parties  agree that neither IP nor
any of its affiliates will have any liability following the Closing with respect
to the  decommissioning  of Clinton  except to the extent of the  aforementioned
funding  of the  Decommissioning  Trusts  at the  time of the  Closing  and IP's
liability to make the six (6) anniversary payments following the Closing. Except
as set forth in the immediately preceding sentence, at Closing Buyer will assume
and be responsible for all other  liability with respect to the  decommissioning
of Clinton.  It will be a  condition  to the  Closing  that  either  through the
receipt of  favorable  rulings  from the Internal  Revenue  Service,  changes in
existing tax law and/or the regulations  thereunder or other circumstances,  the
Buyer  is  satisfied  that  the  transfer  of  the  assets  represented  by  the
Decommissioning  Trusts on a tax-free or tax-efficient basis can be accomplished
and that the maintenance of the Qualified and Nonqualified Decommissioning Trust
funds post-Closing can be accomplished without negative tax implications for the
assets of the  Decommissioning  Trusts  or the  Buyer.  Similarly,  it will be a
condition to Closing that IP must be satisfied  that any chosen  structure  will
neither result in adverse tax  consequences  to IP (such as, but not limited to,
inability  to deduct its payments  into the  Decommissioning  Trusts,  increased
amounts realized on the sale or other income recognition which are not offset by
deductions or losses, its inability to collect its  decommissioning  tariff from
the Illinois taxpayers on a tax effective basis, or a recapture of the Qualified
or Nonqualified Decommissioning Trusts) nor jeopardize IP's legal entitlement to
continue to collect such  decommissioning  tariff in no less than the  aggregate
amounts now envisioned under such tariff.

          (d)   Spent Fuel Fees

          IP will  continue  to pay or cause to be paid all spent fuel  disposal
fees now in effect or  subsequently  imposed for nuclear  fuel burned at Clinton
prior to Closing. On and after the Closing,  Buyer will assume the liability for
payment of all spent fuel  disposal  fees for fuel  burned on or  subsequent  to
Closing.  Fuel burned shall be determined by electricity generated in accordance
with Department of Energy Regulations.

          (e)   Decommissioning and Decontamination Fee


          IP will  continue  to pay or  cause  to be paid to the  Department  of
Energy the annual  decontamination  and  decommissioning  fees  associated  with
Clinton fuel enriched and burned prior to the Closing.

          (f)   Insurance

          IP will  maintain in effect until the Closing  substantially  the same
level of property damage and liability  insurance for Clinton as is currently in
effect. As of the date of Closing,  IP shall retain all rights to (i) its member
insurance accounts in Nuclear Electric Insurance Limited ("NEIL"),  and (ii) its
future nuclear  insurance  distributions and credits from both NEIL and American
Nuclear Insurers ("ANI") including,  but not limited to, shutdown credits earned
by IP through the date of Closing.  Alternatively,  upon mutual agreement of the
parties,  IP shall transfer its rights referenced in clauses (i) and (ii) of the
immediately preceding sentence to Buyer at the Closing,  subject to the approval
of NEIL and/or ANI, if required,  in return for a lump sum payment from Buyer to
IP in an amount to be mutually agreed upon by the parties.

          (g)   Employees

          As of the  Closing,  Buyer will employ  consistent  with its  business
needs the IP  employees  then  working at Clinton and those fully  dedicated  to
Clinton  who are on  Clinton's  budget and  payroll  and Buyer will be given the
opportunity,  subject  to  agreement  by  IP  and  Buyer  as to  the  particular
individuals  involved,  to offer  positions to IP  headquarters  staff whose job
responsibility  is to provide  support for  Clinton.  Buyer will  recognize  the
unions which currently represent employees at Clinton and will adopt pension and
other employee benefit plans and  arrangements for Clinton  employees which will
provide  substantially  similar benefits to such employees  retained by Buyer as
such  employees  would receive under IP's plans and programs in effect as of the
date of Closing. IP and Buyer shall agree in the Definitive Agreement to develop
a transition  plan in  accordance  with Sections  16-128 of the Illinois  Public
Utilities  Act to be offered to  employees  of  Clinton  prior to and  following
Closing. IP will be responsible for implementing and funding the transition plan
for employees at Clinton who are not  transferred to (employed by) Buyer and for
applicable  severance  obligations owing to any transferred  employees  lawfully
terminated  (except for cause) by Buyer during the twenty-four (24) month period
following Closing.  Following its employment of the employees  referenced above,
the Buyer will  comply with the  provisions  of Section  16-128 of the  Illinois
Public  Utilities  Act. As soon as  practicable  following the Closing,  IP will
transfer or cause to be transferred to defined  contribution  plans  established
and/or already maintained by the Buyer an amount equal to the assets (including,
but not limited to,  promissory notes  evidencing loans from IP's  corresponding
defined  contribution plans to transferred  employees that are outstanding as of
the  transfer  date)  representing  the  account  balances  of  all  transferred
employees. This transfer will be done in the most practical and effective method
in order to ensure  compliance  with the Internal  Revenue Code and the Employee
Retirement Income Security Act. As soon as practicable after the Closing, Seller
shall cause to be transferred from Seller's pension and welfare benefit plans to
Buyer or its affiliates an amount (the "Benefit Assets  Transfer  Amount") equal
to the total of (i) an amount to be mutually  agreed  upon by the parties  based
upon the projected costs to cover pension benefit  obligations owing to Seller's
transferred employees,  (ii) an amount to be mutually agreed upon by the parties
equal to the value of  retiree  medical  and life  insurance  benefits  for each
transferred  employee  accrued through the date immediately  preceding  Closing,
less (iii) any payment  made to or in respect of any  transferred  employee  who


retires or otherwise  terminates  employment with Buyer after Closing and before
the date of the transfer of such assets. With respect to the preceding sentence,
a dollar for dollar  adjustment to the purchase price shall be made in the event
that compliance with applicable law results in the actual assets  transferred to
Buyer being  different  than the assets that would have been  transferred if the
asset  calculation were undertaken using mutually approved  long-term  actuarial
assumptions, including, but not limited to, long-term trust earnings.

          (h)   Approvals

          The  Definitive  Agreement  will  contain  provisions  which  make the
Closing subject,  among other things, to receipt of all necessary federal, state
and local regulatory  approvals as well as the expiration of applicable  waiting
periods under the Hart-Scott-Rodino  Antitrust Improvements Act. These approvals
must contain no terms or conditions  which would cause a material adverse effect
on the value of  Clinton  or on the cost of the  transaction  to IP and shall be
otherwise  reasonably  satisfactory  to the parties.  The parties will cooperate
with each other and use their  respective  best efforts to obtain the  necessary
regulatory  approvals as promptly as practicable  following the execution of the
Definitive Agreement.

          (i)   Closing Conditions

          The Definitive Agreement shall contain provisions which condition each
party's  obligation to proceed with the Closing on all Closing conditions having
been satisfied or waived by the appropriate party within eighteen (18) months of
the execution of the Definitive  Agreement.  A further condition to Closing will
be the  requirement  that Clinton has at any instant in time subsequent to March
15, 1999 and on or before December 31, 1999 actually  generated  electric energy
and been  synchronized  to the grid.  In  addition  to such  Closing  conditions
described  herein,  the Definitive  Agreement will contain such further  Closing
conditions as are negotiated by the parties.

          (j)   Environmental Matters

          To the extent that IP has not  already  conducted  or had  conducted a
Phase I environmental  site assessment  reasonably  satisfactory to Buyer of the
Clinton land and facilities to be transferred, Buyer may, at its expense, have a
Phase I and/or Phase II environmental site assessment conducted by environmental
consultants  mutually  agreeable  to IP and  Buyer to  identify  any  recognized
environmental condition for which a release notification would be required to be
made to any state or federal agency having  jurisdiction  or which would pose an
imminent or substantial  endangerment to human health or the  environment  under
applicable  environmental laws. IP and Buyer shall mutually agree on (i) whether
any remediation is necessary with respect to any such  recognized  environmental
conditions, (ii) what type of remediation should be performed, if any, and (iii)
who will  conduct  such  remediation.  IP shall cause any  mutually  agreed upon
remediation  to be  performed  prior to  Closing,  or IP shall  pay to Buyer the
estimated  cost for any  uncompleted  mutually  agreed upon  remediation or make
appropriate  arrangements  to  indemnify  Buyer  therefor.  From and  after  the
Closing,  Buyer  shall  assume,  and shall  indemnify  IP with  respect  to, all
environmental liabilities and obligations at the site; provided however, that IP
shall indemnify Buyer for environmental  liabilities arising from waste disposal
or treatment of waste at the site or other waste disposal activities of IP which
occurred off-site prior to Closing.


          (k)   Property Tax

          The  Definitive  Agreement  will  provide  for (i) the  allocation  of
property taxes on the basis of the percent of the tax year that Clinton is owned
by IP and the Buyer,  and (ii) the allocation of transfer taxes on a 50-50 basis
between IP and Buyer.

          2.    Publicity

         The parties must mutually agree on any news release, press statement or
other public  announcement  relating to this  Interim  Agreement or the proposed
sale of  Clinton  to the  Buyer,  which  agreement  in either  case shall not be
unreasonably  withheld  or  delayed,   except  either  party  may  disclose  the
transaction  to the  extent it is advised by  counsel  that such  disclosure  is
required under applicable regulatory provisions, securities laws or the rules of
the New York  Stock  Exchange.  Notwithstanding  the  foregoing,  no party  will
disclose the existence of this Agreement prior to the Effective Date,  except as
otherwise provided in Paragraph 6 herein.

          3.    Transaction Costs

         Each party shall bear its own costs  related to this  Agreement and the
agreements   exhibited  herein,  the  Definitive  Agreement  and  the  Ancillary
Agreements,  to  the  provision,   receipt  and  examination  of  due  diligence
materials,  and to any other  transaction  costs,  including  the cost of legal,
technical and financial consultants and the cost of any necessary or appropriate
regulatory  filings  and/or  prosecuting  applications  for required  regulatory
approvals, except as may otherwise be provided in the Definitive Agreement.

          4.    Exclusivity

         Buyer shall have the exclusive  right to negotiate with IP for the sale
of  Clinton  during  the  Exclusivity  Period to the  extent  and in the  manner
provided  for  in  paragraph  10 of  the  Confidentiality  Agreement;  provided,
however, that the Exclusivity Period shall continue in effect from the execution
of this Agreement until the execution of a Definitive Agreement or 5:00 p.m.
Decatur, Illinois time June 15, 1999, whichever first occurs.

          5.    Other Agreements

         Concurrently  with  the  execution  of  this  Interim  Agreement,   the
appropriate  parties will execute and deliver to each other  Amendment  No. 2 to
the Management  Agreement and the Leased Employee  Agreement  (together with the
Confidentiality Agreement, as modified hereby, the "Other Agreements").

          6.    Regulatory Filings: Cooperation

         At the time of the  execution  of this Interim  Agreement,  the parties
hereto  will  confer as to  whether  this  Interim  Agreement,  any of the Other
Agreements or the  transactions  to be implemented  under any of them require or
make  advisable  (i)  the  filing  of  any  documents,   notices,   requests  or


applications  for  approval  with any  state,  local or  federal  government  or
regulatory  agency,  and/or (ii) the appearance  before or personal contact with
the appropriate personnel at any such governmental body or agency. To the extent
that any of the  foregoing  is  determined  by the  parties to be  necessary  or
advisable,  the parties will cooperate with one another and use their respective
best efforts to initiate and complete such  necessary or  appropriate  action in
the most effective and prompt fashion practicable.

          7.    Term

         If the  Definitive  Agreement is executed by the parties  prior to June
15, 1999, this Interim Agreement will terminate upon the earlier to occur of the
date of the Closing or the effective  date of the  termination of the Definitive
Agreement,  unless the Definitive Agreement otherwise provides.  Otherwise, this
Interim Agreement will terminate at midnight on December 31, 1999.

          8.    Governing Law

         This Interim Agreement shall be governed by, and construed, interpreted
and  enforced in  accordance  with,  the laws of the State of  Illinois  without
regard to the conflict of law provisions thereof.

          9.    No Waiver: Amendment

         No failure  or delay by any of the  parties  in  exercising  any right,
power or privilege  hereunder shall operate as a waiver  thereof,  nor shall any
single or  partial  exercise  thereof  preclude  any other or  further  exercise
thereof or the exercise of any other right, power or privilege  hereunder.  This
Interim  Agreement  shall not be modified,  supplemented  or amended except by a
writing signed by all parties hereto.






                                                   Sincerely,

                                                   PECO Energy Company



                                                   By:_________________________
                                                      Paul E. Haviland
                                                      Vice President


                                                   AmerGen Energy Compay



                                                   By:_________________________
                                                      Name:____________________
                                                      Title:___________________



Agreed to and accepted:

ILLINOIS POWER COMPANY



By: /s/David W. Butts
  --------------------------
   Name:  David W. Butts
   Title: Sr. Vice President







                                                                       Exhibit A


                                 AMENDMENT NO. 2


         THIS AMENDMENT AGREMENT (the "Amendment") is made and entered into this
31st  day of  March,  1999,  to be  effective  as of the  "Effective  Date"  (as
hereinafter  defined),  by  and  between  PECO  ENERGY  COMPANY, a  Pennsylvania
corporation  ("PECO"),  and  ILLINOIS  POWER  COMPANY,  an Illinois  corporation
("IP").

         WHEREAS,  PECO and IP entered into that certain  Agreement  dated as of
January 15, 1998, as amended by that certain Incentive Compensation Agreement to
Amend the Management Services Agreement dated as of May 19, 1998 (the "Incentive
Compensation  Amendment"),  the terms of which  are  incorporated  by  reference
herein  (such  Agreement  as so amended  being  hereinafter  referred  to as the
"Management Agreement");

         WHEREAS, the Management Agreement provides for the provision of certain
management  services  by PECO to IP in support of outage  recovery  efforts  and
operation of IP's Clinton Power Station ("CPS");

         WHEREAS,  IP, PECO and AmerGen Energy Company  ("AmerGen") have entered
into an Interim Agreement of even date herewith (the "Interim Agreement") (which
Interim  Agreement  shall  become  effective on the date that it is ratified and
approved  by  the  Board  of  Directors  of  IP  (the  "Effective   Date")),  in
anticipation  among  other  things of (i) PECO's or  AmerGen's  purchase  of CPS
(pursuant  to the  terms  and  conditions  of a  to-be-negotiated  and  executed
definitive  asset purchase  agreement (the  "Definitive  Agreement")) and (ii) a
revised fee  arrangement  under the  Management  Agreement and the assumption of
certain O&M and capital costs relative to CPS by PECO; and

         WHEREAS,  the parties hereto desire to amend the Management  Agreement,
effective as of the  Effective  Date, in the manner set forth herein to provide,
among other things, for changes in the compensation for PECO's management of CPS
during the period  that the  Interim  Agreement  is in effect,  or as  otherwise
provided for in the Definitive Agreement;


         NOW,  THEREFORE, FOR AND IN  CONSIDERATION  OF the mutual  promises and
covenants hereinafter set forth, and other good and valuable consideration,  the
receipt and  sufficiency  of which are hereby  acknowledged,  the parties hereto
agree as follows:

1. The Management  Agreement is hereby amended by deleting the seventh  sentence
of Article  3.1.1 in its  entirety and  inserting in lieu thereof the  following
sentence:

         The Parties recognize and agree that notwithstanding any duties the CNO
         will  have  by  virtue  of  his  position  in IP,  the  CNO  may  share
         information  regarding  Clinton  Power  Station  with PECO  management,
         including information regarding plant status, plant condition, budgets,
         future needs for repairs, replacements,  modifications and costs, plant
         staff  performance,  labor  relations,  regulatory  issues,  and  local
         conditions and issues; provided,  however, that in no event may the CNO
         disclose  information to PECO  management (i) which is privileged to IP
         (including  but  not  limited  to  the  attorney  client  communication
         privilege and work product  doctrine),  or (ii) the disclosure of which
         would  constitute  a  breach  of  a  confidentiality  or  nondisclosure
         agreement  to which IP is bound with  another  party or a violation  of
         law;  provided  further  that any  information  shared by CNO with PECO
         management shall be subject to the non-disclosure provisions of Article
         15 of this Agreement and to the terms of the Confidentiality  Agreement
         among IP, PECO and AmerGen  Energy  Company  dated March 12,  1999,  as
         amended from time to time, which is incorporated by reference herein.

2. The  Management  Agreement is hereby  amended by deleting  Articles 5.1, 5.2,
5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 5.10,  5.11,  5.12,  Attachments A and B, and
Article  3 of  the  Incentive  Compensation  Amendment  in  their  entirety  and
inserting in lieu thereof the  following  Articles 5.1, 5.2, 5.3, 5.4, 5.5, 5.6,
5.7, 5.8, 5.9, 5.10 and 5.11 which read in their entirety as follows:

         5.1   Direct Operating and Maintenance and Capital Costs Reimbursement

         Commencing  as of April 1,  1999,  PECO  shall be  responsible  for the
         payment of all  direct  operating  and  maintenance  ("O&M")  costs and
         direct  capital costs  incurred by IP and allocable to the operation of
         CPS. The specific  categories  of such O&M and capital  costs for which
         PECO shall be  responsible  are set forth on  Attachments  A.1, A.2 and
         A.3,  respectively,   which  Attachments  are  incorporated  herein  by
         reference.  The Parties  will confer with each other to ensure that the
         categories  of  costs  set  forth  on  Attachments  A.1,  A.2  and  A.3
         constitute reimbursable direct O&M and capital costs of IP allocable to
         the  operation  of CPS.  Notwithstanding  the  foregoing  prior  to the
         scheduled November,  1999 purchase of fuel, IP will confer with PECO as
         to the timing of such  purchase and the  treatment of such  purchase if
         the Closing under the  Definitive  Agreement  does not occur.  IP shall


         remain responsible for all other costs attributable to the operation of
         CPS,  including,  for  example:   pension,  benefits  and  payroll  tax
         payments; real property taxes; DOE spent fuel fees; DOE decommissioning
         and  decontamination  fees,  if  any;  and  contributions  to  the  CPS
         decommissioning trust funds.

         IP shall submit to PECO invoices for each calendar month  detailing all
         O&M and capital  costs  incurred or accrued by IP with  respect to such
         month  and  reimbursable  or  payable,  as the  case  may  be,  by PECO
         hereunder.  Within  fifteen (15) days of receipt of such invoice,  PECO
         shall by wire transfer pay the invoiced amount, subject to PECO's right
         to dispute the invoice pursuant to Article 5.7. Other than as expressly
         provided in such Article 5.7, such payments are non-refundable.

         Invoices to PECO will be submitted to:

                  Charles P. Lewis
                  PECO Nuclear
                  965 Chesterbrook Boulevard
                  Wayne, Pennsylvania 19087
                  Fax No.:

and may,  at IP's  election,  be  submitted  by first  class or  priority  mail,
courier, fax or hand delivery.

         5.2   PECO Management Fee

         Commencing  as of April 1, 1999,  in  consideration  for all  services,
         payments  and  reimbursements  provided  by PECO under this  Agreement,
         including  without  limitation  the  On-Site  Management  Services  and
         Additional  Services,  and in  lieu  of any  and  all  other  fees  and
         incentive  payments accrued as of, or otherwise payable after, April 1,
         1999,  IP shall,  in addition to the  provision  of electric  energy as
         provided in Article 5.3, pay as provided in the next  paragraph to PECO
         a management fee  ("Management  Fee") of $xx.xx for each  megawatt-hour
         ("Fee Hour") of electric energy contained during the period  commencing
         April 1, 1999 and ending  December 31, 1999 in the Net Electric  Output
         of CPS after subtracting therefrom the Electric Output Entitlement,  as
         such terms are  defined in Article  5.3.  For months  commencing  after
         December 31, 1999, the  Management  Fee shall be calculated  consistent
         with the pricing  provided  for in the Power  Purchase  Agreement to be
         negotiated  in  connection  with (and  attached  as an Exhibit  to) the
         Definitive Agreement.

         Commencing  with the month  immediately  following  the first  calendar
         month after March 1999 that CPS generates Net Electric  Output which is
         measurable,  IP will by the last day of each  month  provide  to PECO a
         statement  setting  forth  the  Net  Electric  Output  of CPS  for  the
         preceding  month along with a calculation  of the  Management Fee based
         thereon and shall  concurrently  make payment of such  indicated fee to
         PECO by wire transfer. PECO shall be entitled to dispute such statement
         in accordance Article 5.7 hereof.

         5.3   PECO Entitlement to Electric Output


         As  additional   consideration  for  On-Site  Management  Services  and
         Additional  Services provided by PECO, IP shall be obligated to deliver
         to PECO 20% of the Net Electric Output of the CPS (the "Electric Output
         Entitlement"),  if any,  generated  after March 31, 1999 during term of
         this Agreement.  For purposes of determining the amount of the Electric
         Output  Entitlement  to be delivered  to PECO  pursuant to this Article
         5.3, the Net Electric Output of CPS shall be defined as follows:

                  [Within  fifteen (15) business days following the execution of
                  this  Amendment,  the Parties shall  negotiate a supplement to
                  this  Amendment  pursuant to which the Parties  shall agree on
                  procedures  for  calculating  the Net  Electric  Output of CPS
                  prior  to and  following  installation  of  the  revenue-grade
                  metering discussed in the following paragraph,  as well as the
                  metering points necessary to calculate the Net Electric Output
                  and Station Service Energy.]

         The Parties recognize and agree that the current metering equipment and
         system  at  the  CPS  (the  "Metering   System")  is  not  optimal  and
         modifications  to improve the Metering  System are needed.  The Parties
         shall mutually agree upon the  modifications  and upgrades  required to
         convert the Metering System to the level of  revenue-grade  metering as
         well as how the  costs  of such  modifications  and  upgrades  shall be
         allocated between the Parties.

         PECO  shall  be  notified  of  and  shall  have  the  right  to  have a
         representative   present   at   any   test,   inspection,   adjustment,
         maintenance,  installation  or  replacement of any part of the Metering
         System performed by IP or its agents.  IP will test the Metering System
         for accuracy at least once each year. In addition, IP will also conduct
         a test, at any time within thirty (30) business days after a request by
         PECO,  if  PECO  reasonably   believes  that  the  Metering  System  is
         inaccurate   by  more  than  two   percent   (2%).   PECO  may  have  a
         representative  present  during  all  testing.  The costs of such tests
         requested  by PECO shall be borne  one-half  by PECO an one-half by IP;
         provided,  however, that if a test requested by PECO indicates that the
         Metering System is accurate to within two percent (2%), PECO shall bear
         the full costs of such test.

         IP shall be responsible for delivery of the Electric Output Entitlement
         to the Delivery Point and shall have no obligation,  responsibility  or
         liability for making arrangements for or the costs for the transmission
         of the Electric Output Entitlement beyond the Delivery Point, including
         but not  limited  to,  transmission  and  ancillary  service  costs and
         congestion  costs.  IP  shall  provide  for  transmission   service  in
         accordance with IP's Open Access  Transmission  Tariff on file with the
         FERC.

         The Electric  Output  Entitlement  shall be unit  specific from the CPS
         and,  except as expressly set forth above,  IP shall have no minimum or
         maximum  delivery   obligations  over  any  time  period.   If  CPS  is
         unavailable  in whole or in part, IP shall have no obligation to supply
         back-up energy to PECO.

         The  transaction  contemplated  by IP and PECO in this Section 5.3 is a
         wholesale  power sale for resale  pursuant to IP's Power  Sales  Tariff
         (the  "PS  Tariff")  on  file  with  the  Federal   Energy   Regulatory
         Commission.  IP and PECO have previously  executed a "Form of Agreement


         for Electric Service" pursuant to the PS Tariff, dated as of October 3,
         1996. IP and PECO desire for this transaction to occur pursuant to this
         Form of Agreement for Electric Service.

         Other than as provided for in this Article 5.3 and in Article 5.2, PECO
         shall not be  entitled  to receive  from IP any other  compensation  or
         payment  for, or in respect of, any  services or  performance  rendered
         under this Agreement.

         5.4   Billing Estimates and Adjustments

         If either Party renders an invoice or statement on an estimated  basis,
         any  adjustment  to such  invoice  or  statement  shall  be made in the
         subsequent month's invoice or statement,  as appropriate.  Each invoice
         or statement  shall be subject to adjustment  for errors in arithmetic,
         computation, meter readings, or other errors, until twelve months after
         the date each respective invoice or statement was rendered.

         5.5   Record Retention and Audit Rights

         IP and PECO shall both keep complete and accurate records and all other
         data   required   by  either  of  them  for  the   purpose   of  proper
         administration  of the  Agreement,  including  such  records  as may be
         required by state or federal regulatory  authorities.  All such records
         shall be maintained  for a minimum of five (5) years after the creation
         of the record or data and for any additional length of time required by
         state or federal  regulatory  agencies  with  jurisdiction  over IP and
         PECO. IP and PECO, on a  confidential  basis as provided for in Article
         15 of this Agreement,  will provide  reasonable  access to the relevant
         and  appropriate  financial and operating  records and data kept by the
         other  relating to this  Agreement  necessary  for such Party to comply
         with its  obligations to federal and/or state  regulatory  authorities,
         through  the use of a mutually  agreed upon third  party  auditor.  The
         Party  seeking  access to such records in this manner shall pay 100% of
         the fees and expenses associated with use of the third party auditor.

         5.6  Late Payment

         If either IP or PECO fails to pay any  amount due under this  Agreement
         in full, when due, then such Party shall be required to pay interest on
         the unpaid or late amount, which shall accrue from the date payment was
         due through the date payment is made at a daily rate equal to the lower
         of (a) the highest  daily prime  interest  rate  published  in the Wall
         Street Journal on the date of, or the next business day following,  the
         invoice  due  date,  or  (b)  the  highest  daily  rate  allowed  under
         applicable law. Any over-payments or under-payments shall bear interest
         as provided  above and shall be  assessed  from the time of the over or
         under payment to the date of the refund or payment thereof.

         5.7   Disputed Invoices or Statements

         Management  Fees and O&M/capital  costs payable  hereunder shall not be
         subject  abatement  or setoff  and  shall be paid in full when due.  If
         either Party  disputes an invoice or statement or any part thereof,  it
         nevertheless  shall make the  payment  due in full but may  dispute the
         invoice or statement in the manner  prescribed  in Article 12, but only


         if Notice of such  dispute is provided  to the other  Party  within one
         year of the date of the invoice or statement.

         5.8   Proration

         If this Agreement is terminated  effective on a day other than the last
         day of a calendar  month,  the  Management  Fee,  O&M costs and capital
         costs due for that month hereunder shall be prorated based on the ratio
         of the number of days of such month that this Agreement is in effect to
         the total number of days in such month.

         5.9   Payment by Wire

         Unless  otherwise  specified  in writing by the  receiving  Party,  all
         payments  made  under  this  Agreement  shall  be by wire  transfer  of
         immediately  available funds to a bank account  specified in writing by
         PECO or IP,  respectively,  and in  accordance  with  the  instructions
         provided by each Party.

         5.10  Taxes

         Any and all taxes, fees and assessments based on the payment or receipt
         of Management Fees or the Electric Output Entitlement,  whether paid in
         cash or power,  shall be borne by PECO. PECO, at its own expense,  will
         file  any  documentation  required  by  governmental  authorities  with
         respect to such payment or receipt of  Management  Fees or the Electric
         Output Entitlement.

         5.11  Separation Costs

         Except  as may be  otherwise  provided  in  the  Definitive  Agreement,
         separation  agreements  with  any IP  employee,  or any  PECO  employee
         providing services pursuant to this Agreement,  who is outplaced during
         the term of this Agreement  shall be the sole financial  responsibility
         of the  employing  Party,  either IP or PECO, as the case may be, or as
         specified in any Leased  Employee  Agreement  among the Parties and any
         employee.

3. The  Management  Agreement  is hereby amended by deleting  Article 7.2 in its
entirety and inserting in lieu thereof the following Article 7.2, which reads in
its entirety as follows:

         7.2   Limit on PECO Liability

         PECO's  aggregate   liability  to  IP,  exclusive  of   indemnification
         obligations,  arising out of this Agreement or the performance  thereof
         in any calendar year,  whether  arising in contract,  tort or otherwise
         (including  strict  liability),  shall not  exceed  the  greater of (a)
         $20,000,000.00, or (b) the aggregate fees paid to PECO by IP under this
         Agreement  for all  periods  prior to April 1, 1999 plus the product of
         $10.00 multiplied by the aggregate number of Fee Hours against which IP
         has paid Management Fees to PECO.


4. The Management  Agreement is hereby  amended by deleting  Article 11.1 in its
entirety and inserting in lieu thereof the following  Article 11.1,  which reads
in its entirety as follows:

         11.1  Termination Without Cause

               This  Agreement  shall  terminate  on the  date  of  the  Closing
         pursuant to the Definitive  Agreement  contemplated  by the Parties for
         the sale of CPS to PECO. In the event of the termination of the Interim
         Agreement  without  the  Parties  having  entered  into and  executed a
         Definitive  Agreement,  this  Agreement  will terminate on December 31,
         1999.  In the event that a  Definitive  Agreement  is entered  into and
         executed by the Parties,  but is  terminated  without a Closing for the
         sale of CPS, then this  Agreement  will terminate on the later to occur
         of (i) December 31, 1999, or (ii) the effective  date of termination of
         the  Definitive  Agreement.  At  any  time  after  termination  of  the
         Exclusivity  Period as  described in the Interim  Agreement  and unless
         otherwise  provided  in  the  Definitive  Agreement,  if  any,  IP  may
         terminate  this  Agreement  by  providing  180 days  written  Notice of
         termination to PECO, such termination to be effective as of the date of
         the Notice or, upon mutual  agreement of the  Parties,  as of any other
         date.  Except as provided in Article  20.10,  termination in accordance
         with  this  Article  11.1  shall   discharge   both  Parties  from  all
         obligations  and  duties  under  this  Agreement  that have not  become
         payable as of the effective date of termination.  Upon the provision of
         a Notice of  termination  pursuant to this Article  11.1,  or beginning
         September  1, 1999,  in the event that a Definitive  Agreement  has not
         been executed,  the Parties shall work in good faith to provide for the
         expeditious   replacement   of  PECO   personnel   and   transition  of
         responsibility and work in progress in a safe and orderly manner,  with
         the actual length of transition  to be  established  by IP. The Term of
         this Agreement shall extend until the effective time of any termination
         thereof pursuant to this Article 11.

5. The Management Agreement is amended by deleting Article 18 in its entirety.

6. The Management  Agreement is hereby amended by deleting  Article 20.15 in its
entirety and inserting in lieu thereof the following Article 20.15,  which reads
in its entirety as follows:

         20.15  Employee Status

         Except as otherwise  provided in the Definitive  Agreement,  during the
         term of this Agreement and for a period of eighteen months  thereafter,
         PECO shall not,  directly or indirectly,  initiate offers of employment
         or hire any IP employees,  without IP's prior written  consent.  During
         the  term of  this  Agreement  and  for a  period  of  eighteen  months
         thereafter,  IP shall not,  directly or indirectly,  initiate offers of
         employment  or hire any  personnel  employed  by PECO who has  provided
         On-Site  Management  Services or Additional  Services,  without  PECO's
         prior written consent.


7.    Except as provided in paragraphs 1, 2, 3, 4, 5 and 6 above, the Management
      Agreement shall remain in full force and effect.

8.    Miscellaneous

     (a) This Amendment Agreement and the Management Agreement as amended hereby
constitutes  the  complete  understanding  of the  Parties  with  respect to the
subject matter set forth herein, and shall supersede any prior  understanding or
agreement to the contrary,  written or oral, and may not be amended,  altered or
discharged unless in a writing signed by the Parties hereto.

     (b) This  Amendment  shall be governed by and construed in accordance  with
the laws and decisions of the State of Illinois.






     IN WITNESS WHEREOF,  the parties have caused this Amendment to be executed
by their duly authorized officers.

                                                   ILLINOIS POWER COMPANY
                                                   "IP"



                                                   By:/s/David W. Butts

Witness:
/s/Kay M. Trummel



                                                   PECO ENERGY COMPANY
                                                   "PECO"



                                                   By:_________________________

Witness:

- ---------------------





                                    Exhibit B

                            LEASED EMPLOYEE AGREEMENT

         THIS LEASED  EMPLOYEE  AGREEMENT (the  "Agreement") is made and entered
into  this  31st day of  March,  1999,  by and  among  PECO  ENERGY  COMPANY,  a
Pennsylvania   corporation   ("PECO"),   ILLINOIS  POWER  COMPANY,  an  Illinois
corporation ("IP"), and John P. McElwain ("Employee").

         WHEREAS, PECO and IP have entered into that certain Agreement effective
as of January 15, 1998,  as the same has been amended by that certain  Inventive
Compensation  Agreement to Amend the Management  Services  Agreement dated as of
May 19, 1998,  and Amendment  No. 2, dated of even date herewith  (collectively,
the "Management  Agreement"),  the terms of which are  incorporated by reference
herein;

         WHEREAS, the Management Agreement provides for the provision of certain
management  services  by PECO to IP in support of outage  recovery  efforts  and
future operations of IP's Clinton Power Station ("CPS");

          WHEREAS,  PECO  employs  Employee  who has the  experience  and skills
necessary to perform such management services;

         WHEREAS,  PECO has  selected  Employee  to serve as the full time Chief
Nuclear Officer ("CNO") of CPS;

         WHEREAS, in reliance upon PECO's  representations  regarding Employee's
experience and skills,  IP has approved  PECO's  selection of Employee as CNO of
CPS; and





         WHEREAS,  the parties  hereto desire to permit IP to lease the services
of Employee from PECO subject to the conditions set forth herein;

         NOW,  THEREFORE,  FOR AND IN  CONSIDERATION  OF the mutual promises and
covenants hereinafter set forth, and other good and valuable consideration,  the
receipt and  sufficiency  of which are hereby  acknowledged,  the parties hereto
agree as follows:

         1.  Furnishing  of  Employee.  PECO  agrees  to  furnish,  for the time
specified in Section 2 hereof,  Employee to provide full time services under the
Management Agreement (the "Work").

         2. Term. This Agreement and PECO's provision of Employee shall continue
for the term of the  Management  Agreement or until the earlier  termination  of
this Agreement by written notice of either IP, PECO or Employee,  at the will of
the terminating party, subject,  however, to the terms and conditions of Section
3.1 and Article 11 of the Management Agreement.

         3.  Status of  Employee.  Employee  shall serve as the CNO of IP and in
such capacity shall be an officer of IP subject to the direction of the IP Chief
Executive  Officer ("CEO") or other officer as designated by the CEO and subject
to IP's standard rules of conduct (a copy of which is attached to the Management
Agreement as Attachment "C"). For operational and functional purposes related to
the  operation  of the CPS,  Employee  shall be treated as an employee of IP and
shall be entitled to those rights of  indemnification  and other protection from
claims brought by third parties as afforded by IP to its officers and employees.
Except as  expressly  provided  by the  foregoing,  neither  PECO nor any of its
employees or agents,  including Employee,  shall maintain,  hold out, represent,
state or imply to any  other  individual  or  entity  that an  employer/employee
relationship exists between IP and PECO or between IP and Employee.






              Notwithstanding  the  foregoing,  PECO,  IP  and  Employee  hereby
acknowledge and agree that Employee shall remain an employee of PECO, and except
for actions  taken in his position and under his authority as CNO, IP shall have
no liability of any kind or nature  whatsoever  to Employee,  PECO, or any other
individual or entity, as a result of the actions of Employee as a consequence of
Employee's status as a leased employee.  PECO and Employee  recognize,  covenant
and agree that neither PECO nor Employee  shall be entitled to any  compensation
or other benefits given to any employees of IP, including  (without  limitation)
pension,  welfare  benefits,  incentive  bonuses,   compensation  insurance  and
unemployment insurance.

         4. Duties of Employee.  As an officer of IP,  Employee agrees to devote
his time,  attention and energies in the performance of the duties designated by
IP,  that  with  respect  to such  duties  Employee  shall  be  under  the  sole
supervision,  direction and control of IP, and that Employee is subject to those
duties of loyalty  and  honesty to IP as an officer as  established  by Illinois
law.  As an  officer  of IP,  Employee  shall  report  to, and be subject to the
supervision  of, the CEO of IP or such  other  officer of IP as may from time to
time be designated by the CEO.

          Notwithstanding  the  foregoing,  IP, PECO and Employee  recognize and
agree that Employee may share  information  regarding CPS with PECO  management,
including information regarding plant status, plant condition,  budgets , future
needs  for  repairs,   replacements,   modifications  and  costs,   plant  staff
performance,  labor  relations,  regulatory  issues,  and local  conditions  and
issues, provided, however, that in no event may Employee disclose information to
PECO  management (i) which is privileged to IP  (including,  but not limited to,
the attorney client communication  privilege and work product doctrine), or (ii)
the  disclosure  of which  would  constitute  a breach of a  confidentiality  or
nondisclosure  agreement to which IP is bound with another party or constitute a
violation of law; provided further that any information  shared by Employee with
PECO management shall be subject to the non-disclosure provisions of Paragraph 6
of this Agreement.






          PECO shall not take any action  either  pursuant to this  Agreement or
the Management Agreement that diminishes the final decision-making  authority of
IP with respect to licensed activities, including, but not limited to, shut-down
and start-up, reporting, operability determinations,  deferral or prioritization
of  repairs,  implementation  of quality  assurance  programs,  continuation  of
operations or cessation of operations  (either  short-term or  permanently),  or
organizational or design changes to the CPS.

         5.   Responsibility   for  Compensation   and  Expenses.   PECO  hereby
recognizes,  covenants and agrees that, as the employer of Employee and pursuant
to Section 20.4 of the Management Agreement,  it shall be solely and exclusively
responsible  and liable for Employee's  compensation,  and all expenses,  costs,
liabilities, assessments, taxes, insurance and other obligations incident to the
employment of Employee in performance of the Work hereunder,  including (without
limitation) all wages and salary,  benefits,  withholding taxes, social security
taxes, unemployment taxes and workers' compensation insurance premiums.

         6.  Confidentiality.  As an  employee  of  PECO  and  pursuant  to this
Agreement,  Employee  shall be bound by the  provisions  of the  Confidentiality
Agreement  between  IP and  PECO,  dated  December  29,  1997,  attached  to the
Management  Agreement,  and incorporated by reference herein and by the terms of
the Confidentiality  Agreement among IP, PECO and AmerGen Energy Company,  dated
March 12, 1999, which is incorporated by reference herein.

         7.   Miscellaneous.

         (a) The parties may not assign this  Agreement or any of their  rights,
duties or  obligations  hereunder  without  the  prior  written  consent  of the
remaining  parties,  and any  attempted  assignment  without such prior  written
consent shall be null and void.



         (b)  This  Agreement  constitutes  the  complete  understanding  of the
parties with respect to the subject matter set forth herein, and shall supersede
any prior  understanding or agreement to the contrary,  written or oral, and may
not be amended,  altered or discharged unless in a writing signed by all parties
hereto.

         (c) This  Agreement  shall be governed by and  construed in  accordance
with the laws and decisions of the State of Illinois.

         (d) Failure by either party  hereto,  any time or from time to time, to
enforce  and  require  the  strict  keeping  and  performance  of any  terms and
conditions of this Agreement shall not constitute a waiver of any such terms and
conditions at any future time and shall not prevent such party from insisting on
the strict keeping and performance of such terms and conditions at any time.

         (e)  The  rights  and  responsibilities  of the  parties  hereto  under
Sections 4 and 6 hereof shall  survive any  termination  or  expiration  of this
Agreement.

         (f)  The  unenforceability  or  invalidity  of any  provision  of  this
Agreement  shall not affect the  validity  or  enforceability  of the  remaining
provisions hereof.



         IN WITNESS  WHEREOF,  the  parties  have caused  this  Agreement  to be
executed by their duly authorized officers.

                                                   PECO ENERGY COMPANY
                                                   "PECO"



Witness:                                           By:_________________________


_____________________                              Its:________________________




                                                   ILLINOIS POWER COMPANY
                                                   "IP"


Witness:                                           By:/s/David W. Butts

/s/Kay M. Trummel                                  Its:  Sr. Vice President




                                                   "EMPLOYEE"


Witness:                                           /s/John P. McElwain
                                                   John P. McElwain
/s/Dale L. Holtzscher




                                    Exhibit C

                            CONFIDENTIALITY AGREEMENT

                  THIS  CONFIDENTIALITY  AGREEMENT (the "Agreement") is made and
         entered into this 12th day of March,  1999, by and among ILLINOIS POWER
         COMPANY, an Illinois  corporation  ("Illinois Power"),   AMERGEN ENERGY
         COMPANY L.L.C., a Delaware limited liability company  ("AmerGen").  And
         PECO ENERGY  COMPANY,  a Pennsylvania  corporation  and  shareholder of
         AmerGen ("PECO") (PECO and AmerGen are sometimes  collectively referred
         to herein as the "Buyer Parties").

                               W I T N E S S E T H

                  WHEREAS,  Illinois  Power and the Buyer Parties are discussing
         the  possibility of a transaction  involving the sale or abandonment of
         the Clinton  Nuclear  Power Station (the  "Clinton  Plant")  located in
         Clinton, Illinois (the "Transaction"); and

                  WHEREAS,  in order to permit each party to evaluate  fully the
         potential merits of the Transaction,  each party will furnish, or cause
         to be furnished,  "Evaluation Material" (as defined below) to the other
         parties and their Representatives (as defined below);

                  NOW, THEREFORE,  for and in consideration of the premises, the
         mutual promises,  covenants and agreements  contained herein, and other
         good and valuable  consideration,  the receipt and sufficiency of which
         are  hereby  acknowledged,   the  parties  hereto  (collectively,   the
         "Parties" and individually, a "Party") hereby agree as follows:

                  1.       Definitions

                           (a)  "Affiliate"  shall have the meaning set forth in
         Rule 12b-2 of the  Securities  Exchange  Act of 1934,  as amended  (the
         "Exchange Act").

                           (b)  "Evaluation   Material"  shall  mean  all  data,
         information,  reports,  interpretations  ions,  forecasts  and  records
         (whether in oral or written form,  electronically  stored or otherwise)
         containing  or  otherwise   reflecting   information   concerning   the
         Transaction,  the Supplying  Party (as defined below) or its Affiliates
         or  subsidiaries  which is (or has  been  heretofore)  provided  by the
         Supplying  Party  or its  Representatives  (as  defined  below)  to the
         Recipient (as defined  below) or its  Representatives  pursuant to this
         Agreement or any of the Other  Agreements (as defined  below),  and all
         notes, analyses,  compilations,  studies or other documents in tangible
         form (whether in written form, electronically stored or otherwise) that
         contain or otherwise  reflect such information  whether prepared by the
         Supplying Party, the Recipient or their respective  Representatives  or
         others.   Notwithstanding   the  foregoing,   the  following  will  not
         constitute "Evaluation Material" for purposes of this Agreement:

                                    (i)  Information  that  was  already  in the
                           possession  of the  Recipient or its  Representatives
                           prior to the date hereof and that was not acquired or
                           obtained from the Supplying  Party or its  Affiliates
                           or Representatives;




                                    (ii)  Information  that is  obtained  by the
                           Recipient or its Representatives  from a source other
                           than  the  Supplying   Party  or  its  Affiliates  or
                           Representatives  who,  insofar  as is  known  to  the
                           Recipient after reasonable inquiry, is not prohibited
                           by a  contractual,  legal or fiduciary  obligation to
                           the Supplying Party from transmitting the information
                           to the Recipient or its Representatives; or

                                    (iii)   Information   that  is  or   becomes
                           generally  available  to the  public  other than as a
                           result  of a  disclosure  by  the  Recipient  or  its
                           Representatives  in  violation of the  provisions  of
                           this Agreement.

         Provided,  however that the  exceptions  set forth in  subsections  (i)
         through (iii) above shall not extend to any data, information, reports,
         interpretations,  forecasts  or records  obtained  or  developed  by or
         disclosed to the Buyer Parties,  or either of them, in connection  with
         PECO's   operation  and   maintenance  of  the  Clinton  Plant  or  its
         performance  under the  Agreement  dated as of  January  15,  1998 with
         Illinois  Power or any other  agreement  between the Buyer  Parties (or
         either of them or any of their  Affiliates)  and Illinois Power (or any
         of its Affiliates)  (such Agreement and all such other agreements being
         herein  referred  to as the "Other  Agreements"),   all of which  data,
         information, reports,  interpretations,  forecasts and records shall be
         deemed Evaluation Material for purposes of this Agreement.

                           (c)  "Representatives"  of any Party  shall  mean the
                  subsidiaries  and  Affiliates of such Party and the respective
                  directors, officers, employees,  representatives and agents of
                  such Party and such Party's subsidiaries and Affiliates.

                  2.  Nondisclosure.  Except as otherwise  expressly provided in
         this  Agreement,  without  the  prior  written  consent  of  the  Party
         delivering or providing the  information or as to which the information
         relates (the "Supplying  Party"),  Evaluation  Material will be held in
         confidence and not disclosed  by the Party  receiving or developing the
         information  following receipt (the "Recipient") or its Representatives
         or used by the Recipient or its Representatives  other than directly or
         indirectly in connection with the  consideration  and evaluation of the
         Transaction or in strict  compliance with such of the Other  Agreements
         as may be relevant.  Except as otherwise expressly provided herein, the
         Recipient further agrees that it will only disclose Evaluation Material
         received from a Supplying Party to its Representatives who need to know
         the  Evaluation  Material to evaluate  the possible  Transaction  or in
         strict  compliance with such of the Other Agreements as may be relevant
         and who are informed of its  confidential  nature and agree to be bound
         by the  terms of this  Agreement.  Each  Recipient  agrees  to be fully
         responsible   for  any  breach  of  this   Agreement   by  any  of  its
         Representatives.

                  3.   Confidentiality  of  Transaction.   Except  as  expressly
         provided  herein,  without the prior  written  consent of the Supplying
         Party,  the Recipient agrees that it and its  Representatives  will not
         disclose  to any  person  (i) that any  investigation,  discussions  or
         negotiations  are  taking or have  taken  place  concerning  a possible
         Transaction,  or (ii) that  either  Party  has  requested  or  received
         Evaluation Material, or any terms or other facts regarding the possible
         Transaction,  including  the status  thereof;  provided,  however  that
         nothing in this  Agreement  shall prohibit a Party from making any such
         disclosure  to the extent it has  received  an opinion of counsel  that
         such  disclosure  is  required  to be  made  by it in  order  to  avoid
         violating the federal securities laws or  stock  exchange  regulations.
         The term  "persons"  as used in  this agreement  shall  be  interpreted
         broadly to include any  corporation,  company,  governmental  agency or
         body, entity,  partnership,  group or individual.

                   4.      Convenants of  the Buyer Parties.

                           (a) Without limiting the generality of the foregoing,
         the Buyer  Parties  agree that unless  otherwise  required by law, they
         will not permit any person to have access to  Restricted  Data, as such
         term is defined in 42 U.S.C ss.  2014(y),  until and unless the Federal
         Office of Personnel  Management  shall have made an  investigation  and
         report  to  the  Nuclear  Regulatory  Commission  (the  "NRC")  on  the
         character,  associations  and  loyalty of such person and the NRC shall
         have   determined  that  permitting  such  person  to  have  access  to
         Restricted Data will not endanger the common defense and security.

                           (b)  Notwithstanding  anything  to the  contrary  set
         forth in of this Agreement,  any access to Safeguards  Information,  as
         such term is defined  in 10 C.F.R.  ss.  73.2,  shall be subject to the
         limitations and conditions of 10 C.F.R.  ss. 73.21, the safeguards plan
         for the Clinton Plant, and any other applicable legal requirements.

                           (c) The  Buyer  Parties  shall use and  maintain  all
         documents  prepared  by the  Institute  for  Nuclear  Power  Operations
         ("INPO")  about the Clinton  Plant,  as may be made  available to them,
         consistent  with  agreements  between INPO and  Illinois  Power and the
         policies of INPO and  Illinois  Power,  as the same may be amended from
         time to time.  As a  general  matter  the  Buyer  Parties  shall  treat
         information,  reports,  draft  reports,  field  notes,  draft  notes or
         documents,  and technical  documents prepared by INPO about the Clinton
         Plant as if they are Evaluation  Material  belonging to Illinois Power.
         However,  if an INPO document is classified for "General  Distribution"
         and marked "GENERAL" by INPO, the use and distribution of such document
         will not be limited by this Agreement.

                  5. Return and Retention of Evaluation Material. All Evaluation
         Material in tangible  form  (whether  in written  form,  electronically
         stored  or  otherwise)   provided  by  the   Supplying   Party  or  its
         Representatives  will be returned  by the  Recipient  to the  Supplying
         Party  immediately  upon  request,  without  retention  of  any  copies
         thereof.  All other  Evaluation  Material in tangible  form,  including
         analyses,  compilations,  studies,  personal  notes, or other documents
         (whether in written form,  electronically stored or otherwise) prepared
         by the  Recipient  or any of its  Representatives,  and any  Evaluation
         Material  not so  requested  to be  returned,  will be  retained by the
         Recipient and kept subject to the terms of this Agreement or destroyed;
         provided,  however that all such Evaluation Material shall be destroyed
         upon  the  Supplying  Party's  request  with  such  destruction  to  be
         confirmed in writing.  Except as otherwise  provided in this Agreement,
         all   retained   Evaluation   Material   (whether   in  written   form,
         electronically stored or otherwise) will continue to be subject to this
         Agreement.

                  6.   Legal   Process.   If  the   Recipient   or  any  of  its
         Representatives  are  requested or required to disclose any  Evaluation
         Material  (or  to  disclose  that  any  investigation,  discussions  or
         negotiations  are taking or have taken place  concerning  the  possible
         Transaction)  pursuant to a subpoena,  court order, civil investigative
         demand or similar judicial process or other oral or


         written  request  issued by a court of competent  jurisdiction  or by a
         federal,  state or local governmental or regulatory body, the Recipient
         will provide the  Supplying  Party with prompt  written  notice of such
         request or  requirement  so that the Supplying  Party and/or any of its
         Representatives  may  seek an  appropriate  protective  order  or other
         appropriate  remedy or waive  pursuant to paragraph 13 compliance  with
         the provisions of this Agreement.  If such order or other remedy is not
         obtained  or the  Supplying Party waives compliance with the provisions
         of this Agreement,  the Recipient or its  Representatives,  as the case
         may be, will disclose only that portion of the Evaluation  Material (or
         information   relating  to  any  such  investigation,   discussions  or
         negotiations) that it is advised by counsel that it is legally required
         to so disclose and will exercise  reasonable efforts to obtain reliable
         assurance that  confidential  treatment will be accorded the Evaluation
         Material or information so disclosed.

                  7. No  Obligation  to  Provide:  No  Warranty  of  Accuracy or
         Completeness. This Agreement defines the rights, duties and obligations
         of the Parties with respect to  Evaluation  Material  disclosed or made
         available  hereunder.   Under  no  circumstances  shall  any  Party  be
         obligated  to  disclose  or make  available  to the other  Parties  any
         information  including,  without limitation,  any Evaluation  Material,
         that such  Party in its sole  discretion  determines  not to  disclose,
         provided,  however,  that to the extent that any Party,  acting through
         one  of its  authorized  officers  makes  such  a  determination  as to
         information  requested by the other Party,  it will so advise the other
         Party of that fact. The Parties (i) acknowledge  that no Party, nor any
         Representative  of any Party,  makes any  representation  or  warranty,
         either express or implied,  as to the accuracy or  completeness  of any
         Evaluation Material, and (ii) agree, to the fullest extent permitted by
         law,  that  except as may be  provided in a  Definitive  Agreement  (as
         defined below), no Party, nor any  Representative  of any Party,  shall
         have any  liability to the other  Parties or any of the other  Parties'
         Representatives  on  any  basis  (including,   without  limitation,  in
         contract, tort, under federal or state securities laws or otherwise) as
         a  result  of the  Parties'  participation  in  evaluating  a  possible
         Transaction, the review by any Party of the other Parties'.  Evaluation
         Material,  or the use of the  Evaluation  Material  by any Party or its
         Representatives  in accordance  with the provisions of this  Agreement.
         Each Party  agrees that it is not  entitled to rely on the  accuracy or
         completeness  of the Evaluation  Material.  Each Party  understands and
         agrees  that  there  is  no  definitive   agreement   providing  for  a
         Transaction  currently existing among the Parties and to no contract or
         agreement  providing  for a  Transaction  shall be  deemed  to exist by
         virtue of this Agreement with respect to such  Transaction  except,  in
         the case of this  Agreement,  for the  matters  specifically  agreed to
         herein.

                  8. Securities Laws. The Parties acknowledge that they are, and
         that  their  respective  Representatives  who  are  informed  as to the
         matters that are the subject of this  Agreement will be made, (i) aware
         that the United States  securities  laws would  prohibit any person who
         has material non-public  information about a company from purchasing or
         selling  securities  of  such  company,   or  from  communicating  such
         information  to any other  person  under  circumstances  in which it is
         reasonably  foreseeable  that such person is likely to purchase or sell
         such securities,  and (ii) familiar with the Exchange Act and the rules
         and regulations promulgated thereunder to the extent they relate to the
         matters referred to in this Section 8. The Parties agree that they will
         not use or permit any third  party to use,  and that they will each use
         reasonable   efforts   to  ensure   that   none  of  their   respective
         Representatives  will  use or  permit  any  third  party  to  use,  any
         Evaluation


         Material  in  contravention  of  the  United  States   securities  laws
         including,  without  limitation,  the  Exchange  Act or any  rules  and
         regulations promulgated thereunder.

                   9.   Non-Solicitation.   Except  as  may  be  provided  in  a
         Definitive  Agreement,  for a period of eighteen (18) months  following
         the  execution  of  this   Agreement,   no  Party  or  its   respective
         Representatives or Affiliates will, directly or indirectly,  solicit or
         direct any other person to solicit any current  officer or key employee
         or contractor of another Party (i) terminate or adversely  alter his or
         her employment or other  relationship  with that Party; or (ii) to seek
         or accept employment or other affiliation with such Party.

                  10.  Exclusivity.  Illinois Power hereby agrees immediately to
         cease any existing  discussions or negotiations  with any third parties
         with  respect  to a sale or other  transfer  of Plant  Clinton (a "Sale
         Transaction")  other than a Transaction with the Buyer Parties or their
         Affiliates.  Illinois  Power shall not and Illinois Power shall use its
         commercially   reasonable   efforts   to   ensure   that  none  of  its
         Representatives or Affiliates shall solicit any person, entity or group
         concerning  any Sale  Transaction,  nor shall  Illinois  Power  furnish
         information or enter into negotiations  regarding, or an agreement for,
         a Sale Transaction,  other than a Transaction with the Buyer Parties or
         their  Affiliates.  The  provisions  and  covenants  contained  in this
         Section 10 shall  expire at 5:00 p.m.  C.S.T.  on April 15, 1999 unless
         extended in a writing signed by all the Parties.

                  11. Indemnification:  Remedies. Each Party will be responsible
         for and will  idemnify  and hold  harmless  the other  Parties from any
         damage,  loss,  cost  or  liability  (including,   without  limitation,
         reasonable  attorney's fees and the costs of enforcing such obligations
         under this  indemnity)  arising out of or resulting  from any breach by
         such Party or its  Representatives of its obligations  hereunder.  Each
         Party  acknowledges  that  remedies  at law are  inadequate  to protect
         against breach of this Agreement and hereby in advance agrees,  without
         prejudice to any rights to judicial or other relief, to the granting of
         equitable relief,  including,  without limitation,  injunction,  in the
         other Parties' favor without proof of actual damages. Each Party agrees
         not to seek and agrees to waive any  requirement  for the  securing  or
         posting of, a bond in connection with a Party seeking or obtaining such
         equitable relief.

                  12. Severability.  If any term or provision of this Agreement,
         or any application  thereof to any circumstances,  shall, to any extent
         and  for  any  reason,  be held to be  invalid  or  unenforceable,  the
         remainder  of  this  Agreement,  or the  application  of  such  term or
         provision to circumstances other than those to which it is held invalid
         or enforceable, shall not be affected thereby and shall be construed as
         if such invalid or  unenforceable  provision  had never been  contained
         herein,  and each term and provision of this  Agreement  shall be valid
         and enforceable to the fullest extent permitted by law.

                  13.  Term.  Except as  provided  in  Sections 9 and 10 of this
         Agreement,  this Agreement  shall be effective for a period of five (5)
         years from the date hereof.

                  14. Miscellaneous.  This Agreement shall constitute the entire
         agreement  among the Parties with respect to the subject matter hereof.
         The  provisions  of this  Agreement  shall  control in the event of any
         inconsistency with the provisions of any Other Agreement and such Other
         Agreement shall be deemed modified hereby.  No modification,  amendment
         or waiver of this

         Agreement  shall be binding  without the written consent of the Parties
         hereto.  This  Agreement  shall  inure to the benefit of and be binding
         upon each of the Parties and their respective  successors and permitted
         assigns;  provided,  however that neither this Agreement nor any of the
         rights, interests or obligations hereunder may be assigned by any Party
         without  the  prior  written  consent  of  the  other  Parties,  and no
         assignment of any right,  interest or obligation shall release any such
         assigning Party therefrom unless the other Parties shall have consented
         to  such  release  in  writing  specifically  referring  to the  right,
         interest  or  obligation  from  which  such  assigning  Party  is to be
         released.  It is further understood and agreed that no failure or delay
         in exercising any right, power or privilege  hereunder shall operate as
         a waiver  thereof,  nor shall any  single or partial  exercise  thereof
         preclude (nor any waivers  thereof,  unless so expressly stated in such
         written waiver) any other or further  exercise  thereof or the exercise
         of any other right, power or privilege hereunder.

                  15.  Governing  Law. This  Agreement  shall be governed by and
         construed in accordance with the laws of the State of Illinois, without
         regard to the conflict of laws principles thereof.

                  16. Representatives. Any person who at any time after the date
         hereof becomes a  Representative  of either Party shall be deemed to be
         such Party's Representative for purposes of this Agreement,  regardless
         of whether such person was a  Representative  of such Party on the date
         hereof. All references to Affiliates or subsidiaries  contained in this
         Agreement  shall  apply  with  equal  force  and  effect to any and all
         Representatives of such referenced Affiliates or subsidiaries.

                  17.      Notices.

                           (a)  All  notices,   consents,   requests  and  other
         communications  hereunder shall be in writing and shall be sent by hand
         delivery,  by certified or registered mail (return-receipt  requested),
         by facsimile,  or by  recognized  national overnight courier service as
         set forth below:

              If to Illinois Power:  Illinois Power Company
                                     500 South 27th Street
                                     Decatur, Illinois 62521
                                     Attention: Dave Butts
                                     Facsimile: (217) 362-7417

              With a copy to:        Troutman Sanders LLP
                                     5200 NationsBank Plaza
                                     600 Peachtree Street, NE
                                     Atlanta, Georgia 30308
                                     Attention: Terry C. Bridges,
                                     Facsimile: (404) 962-6731

              If to AmerGen:         AmerGen Energy Company L.L.C.
                                     2301 Market Street
                                     Philadelphia, Pennsylvania 19101
                                     Attention: Paul E. Haviland, Vice President
                                     Facsimile: (215) 841-3508

              With a copy to:        Edward J. Cullen, Jr.
                                     2301 Market Street
                                     Philadelphia, Pennsylvania 19101
                                     Facsimile: (215) 841-4474

              If to PECO:            PECO Energy Company
                                     2301 Market Street
                                     Philadelphia, Pennsylvania 19101
                                     Attention: Paul E. Haviland, Vice President
                                     Facsimile: (215) 841-3508

              With a copy to:        Edward J. Cullen, Jr.
                                     2301 Market Street
                                     Philadelphia, Pennsylvania 19101
                                     Facsimile: (215) 841-4474

         IN WITNESS  WHEREOF,  the  Parties  have caused  this  Agreement  to be
executed by their duly authorized  representatives as of the date and year first
above written.




                                                   ILLINOIS POWER COMPANY




                                                   By:__________________________


                                                 Title:_________________________


                                                   AMERGEN ENERGY COMPANY L.L.C.



                                                   By:__________________________


                                                 Title:_________________________



                                                   PECO ENERGY COMPANY


                                                   By:__________________________


                                                 Title:_________________________


                                                                  ATTACHMENT A-1

                                 AmerGen Billing
                              Clinton Power Station
                                   April 1999

A.  Direct Charges
      Capital                                     $       -
      Storeroom Expense                                   -
      Preliminary Survey and Investigation                -
      Paid Absence                                        -
      USE Taxes                                           -
      Operation and Maintenance Expenses                  -
      Direct Nuclear Expenses                             -
      Plant Electric use:
         _____ kwh @_____ rate                            -
                                                   --------
                                                                     $        -

B.  Material Inventory Balance
      Balance-Beginning of Month                  $       -
      Balance-End of Month                                -
                                                   --------
                                                                     $        -

C.  Diesel Fuel Balance
      Balance-Beginning of Month                  $       -
      Balance-End of Month                                -
                                                                     $        -

D.  Nuclear Fuel Purchases                                           $        -
      (excludes amortizations)                                       ----------

Total Billing                                                        $        -

Adjustments                                                          $        -

      Previous Billings                           $       -
      Previous Payments                           $       -
                                                                     $        -
                                                                     -----------

Total Billing                                                        $        -
                                                                     ==========

 *  Note:  this  billing  structure  is  designed  to  include  direct  expenses
associated  with the operation of the plant and reflecting  Programs and Project
Functions that are known at this time. Additional programs and project functions
may be added at a later time to tract other  expenses that are a direct cost for
the operation of the Clinton Power Station.

** Note: IP shall be  responsible  for the costs of Plant  Electric Use prior to
Restart.  Restart  shall be defined as the  commencement  of  generation  of Net
Electric Output from CPS.




                                                                  ATTACHMENT A-2
                                   AmerGen Billing
                                 Clinton Power Station
                                      April 1999

            Project             Contractors/
FERC       Function     Labor    Consultants    Materials  Miscellaneous   Total

Capital
107         107200      $           $             $            $           $
            107222
            107227
            107232
            107233
            107235
            1073M8
            1073N8
            1073P8
            1073R8
            1073S8
            1073T8
            1073V8
            1073W9
            107302
            107304
            107305
            107306
            107307
            107376
            1075N8
            1075P8
            1075R8
            1075U8
            107512
            107534
108         108200
            1083M8
            1083S8
            1083T8
            108302
            108305
            108306
            108307
                        --------------------------------------------------------

  Total Capital         $           $             $            $           $
                        ========================================================

*    Note:  this  listing only  includes  FERC  accounts  for current  expenses.
     Additional  project  functions  may be added at a later time to track other
     expenses  that are a direct  expense of the safe  operation  of the Clinton
     Power Station.


                                   AmerGen Billing
                                 Clinton Power Station
                                       April 1999

            Project             Contractors/
FERC       Function     Labor    Consultants    Materials  Miscellaneous   Total
Storeroom
163         163301      $           $             $            $           $
            163303
            163304
            163305
                        --------------------------------------------------------
  Total Storeroom       $           $             $            $           $
                        ========================================================

Preliminary Survey & Investigation
183         183001      $           $             $            $           $
                        ========================================================

Paid Absence:
184         184101      $           $             $            $           $
            184102
            184103
            184108
            184109
            184110
            184111
            184112
            184113
            184114
            184115
            184116
            184201
            184205
            184209
            184411
            184412
            184450
            184501
            184502
            184801
            184803
            184901
            184903
            184913
            184914
            184996
                        --------------------------------------------------------
  Total Paid Absence    $           $             $            $           $
                        ========================================================
USE Taxes:
408         408111      $           $             $            $           $
            408113

                        --------------------------------------------------------
  Total USE Taxes:      $           $             $            $           $
                        ========================================================





                                   AmerGen Billing
                                 Clinton Power Station
                                     April 1999

            Project             Contractors/
FERC       Function     Labor    Consultants    Materials  Miscellaneous   Total
Operations & Maintenance
500         500001   $           $             $            $           $
502         502001
505         505001
506         506001
510         510001
511         511001
512         512001
513         513001
514         514001
517         517001
519         519001
520         520001
            520002
            520003
            520004
            520005
523         523001
524         524001
            524002
            524003
            524004
            524216
525         525001
528         528001
529         529001
            529002
530         530001
            530002
            530003
531         531001
531         531002
532         532001
            532002
            532003
            532006
562         562001
            562002
570         570001
            570002
            570003
582         582001
583         583004
586         586001


                                   AmerGen Billing
                                 Clinton Power Station
                                      April 1999

            Project             Contractors/
FERC       Function     Labor    Consultants    Materials  Miscellaneous   Total
593         593002
            593003
735         735002
836         836001
863         863001
878         878001
892         892001
902         902003
903         903001
            903003
912         912015
915         915001
920         920001
            920002
            920003
            920004
921         921001
            921002
            921003
            921004
923         923001
            923003
            923004
924         924004
925         925003
            925004
            925008
            925012
926         926002
            926003
            926008
            926010
            926011
930         930205
            930208
            930209
            930212
931         931003
                        --------------------------------------------------------
 Total O&M              $           $             $            $           $
                        ========================================================
Direct Nuclear Expenses
524         524216      $           $             $            $           $
                        ========================================================

Includes costs incurred in other  Responsibility Areas that are directly related
to CPS

e.g. Name and Accounting Distribution
     EPRI Membership -                    8700-12980-524216-430
     BWR Owners Group -                   8700-13646-524216-430
     Reactor Internals Project at EPRI -  8700-23839-524216-430



                                                                 ATTACHMENT A-3

                              Clinton Power Station
                      Direct Programs and Project Functions

                                      Project
Program     Program Title             Function       Project Function Title
002030  RF6 - SIXTH REFUELING OUTAGE   163301     CPS STOREROOM OPERATING EXP
                                       163305     CPS COMMERCIAL GRADE DED PROG
                                       184411     PURCHASE SMALL TOOLS
                                       184412     MAINTENANCE OF TOOLS & EQUIP
                                       408113     USE TAX-CPS
                                       417140     FAB SHOP-NON REG ACTIVITY
                                       510001     MAINT SUPV & ENG-STEAM GEN
                                       514001     MAINT OF MISC  STEAM  PLANT
                                       517001     OPER SUPV & ENG-NUCLEAR
                                       519001     OPER OF COOLANT & WATER EQUIP
                                       520001     OPERATING  REACTOR & AUX
                                       520002     OPER-RADIOLOGICAL  CONTROLS
                                       520003     DECONTAMINATION ACTIVITIES
                                       520004     RADIOACTIVE  WASTE DISPOSAL
                                       520005     NUCLEAR FUEL LOAD & UNLOAD
                                       523001     OP TURBS/GENRS/ELEC PLT EQUIP
                                       524001     BLDG SERV & MISC NUC OPER EXP
                                       524002     PLANT SECURITY-NUC
                                       524003     RESEARCH &  DEVELOPMENT-NUC
                                       524004     REGULATORY  FEES - NUCLEAR
                                       525001     RENTS-NUCLEAR OPERATION
                                       528001     MAINT SUPV & ENG-NUCLEAR
                                       529001     MAINT OF LAKES & CANALS
                                       529002     MAINT NUC BLDGS, GROUNDS, IMP
                                       530001     MAINT REACTOR PLANT EQUIPMENT
                                       530002     MAINT CONTROL ROD DRIVE SYSTEM
                                       531001     MAINT ELECTRIC PLANT EQUIP-NUC
                                       531002     MAINT DIESEL DRIVEN  GENER-NUC
                                       532001     MAINT STATION SECURITY SYS-NUC
                                       532002     MAINT MISC EQUIP, SMALL TOOLS
                                       562001     OPER OF NON-CPS TRANS SUBS
                                       562002     OPERATION OF CPS TRANS SUB
                                       570003     MAINT OF CPS TRANS SUB EQUIP
                                       920001     ADMIN & GENERAL SALARIES-ELEC
                                       920003     ADMIN & GENERAL SALARIES-JT
                                       920004     ADMIN & GENERAL SALARIES-NUC
                                       921003     NON-LABOR A&G EXPENSES-JOINT
                                       923004     PROFESSIONAL SERVICES-NUC

All expenses charged to construction
(FERC 107 & 108) will also be billed

                                         Page 1





                              Clinton Power Station
                      Direct Programs and Project Functions

                                      Project
Program    Program Title              Function       Project Function Title
002068  PAID ABSENCE - NUCLEAR         184101     VACATION
                                       184102     SICKNESS ALLOWANCE
                                       184103     OTHER PAID ABSENCE
                                       184108     VACATION - CPS EMPLOYEES
                                       184109     SICKNESS ALLOWANCE - CPS
                                       184110     OTHER PD ABSENCE - CPS

002087  RF7 -7TH NUCL REFUELING OUTAGE 517001     OPER SUPV & ENG-NUCLEAR
                                       520001     OPERATING REACTOR & AUX
                                       520002     OPER-RADIOLOGICAL CONTROLS
                                       520003     DECONTAMINATION ACTIVITIES
                                       520004     RADIOACTIVE WASTE DISPOSAL
                                       520005     NUCLEAR FUEL LOAD & UNLOAD
                                       524001     BLDG SERV & MISC NUC OPER EXP
                                       524002     PLANT SECURITY-NUC
                                       528001     MAINT SUPV & ENG-NUCLEAR
                                       530001     MAINT REACTOR PLANT EQUIPMENT
                                       531001     MAINT ELECTRIC PLANT EQUIP-NUC
                                       570001     MAINT ELEC LOAD DISPATCH EQUIP
                                       920001     ADMIN & GENERAL SALARIES-ELEC

002147   CPS MODIFICATIONS - NUCLEAR   184450     TRAINING - ELECTRIC
                                       184501     SUPERVISION
                                       184502     BUILDING SERVICE & CLERICAL
                                       184801     A & G TO CONSTRUCTION-ELECTRIC
                                       184996     EMPLOYEE BEN CLEAR-NUCLEAR O&M
                                       408113     USE TAX-CPS
                                       417101     EXPENSE NON-UTILITY OPERATIONS
                                       417120     EXPENSES BILLABLE TO ILN GENER
                                       417500     EXP TO BILL ILLINOVA
                                       502001     OPER OF BOILER & ASSOC EQUIP
                                       505001     OPER TURBO GENERS & ELEC EQUIP
                                       506001     MISC OPERATING EXPENSES-STEAM
                                       512001     MAINT OF BOILER & ASSOC EQUIP
                                       513001     MAINT-TURBN GEN & ASSOC EQUIP
                                       514001     MAINT OF MISC STEAM PLANT
                                       517001     OPER SUPV & ENG-NUCLEAR
                                       519001     OPER OF COOLANT & WATER EQUIP
                                       520001     OPERATING REACTOR & AUX
                                       520002     OPER-RADIOLOGICAL CONTROLS
                                       520003     DECONTAMINATION ACTIVITIES
                                       523001     OP TURBS/GENRS/ELEC PLT EQUIP


All expenses charged to construction
(FERC 107 & 108) will also be billed

                                         Page 2

                              Clinton Power Station
                      Direct Programs and Project Functions

                                      Project
Program    Program Title              Function       Project Function Title
002147  CPS MODIFICATIONS - NUCLEAR    524001     BLDG SERV & MISC NUC OPER EXP
                                       528001     MAINT SUPV & ENG-NUCLEAR
                                       529002     MAINT NUC BLDGS, GROUNDS, IMP
                                       530001     MAINT REACTOR PLANT EQUIPMENT
                                       530002     MAINT CONTROL ROD DRIVE SYSTEM
                                       531001     MAINT ELECTRIC PLANT EQUIP-NUC
                                       570002     MAINT OF TRANS SUB EQUIP
                                       583004     OPER OH DIST LINES-UNDER 34.5
                                       586001     TURN ON/OFF CHANGE ELEC METERS
                                       593003     MAINT LESS THAN 34.5 OH LINES
                                                  & OH SERV
                                       878001     REMOVE/CHANGE GAS METERS &REGS
                                       920001     ADMIN & GENERAL SALARIES-ELEC
                                       920002     ADMIN & GENERAL SALARIES-GAS
                                       921003     NON-LABOR A&G EXPENSES-JOINT
                                       926002     ADMINISTRATION OF PENSION PLAN
                                       926003     GROUP INSURANCE CONTRIBUTIONS
                                       930209     COMM WELF CONT-ELEC-FERC 426.1

002174  EMPLOYEE SERVICES ADMIN        184111     VACATION-CSBG EMPLOYEES
                                       184112     SICKNESS ALLOWANCE - CSBG
                                       184113     OTHER PAID ABSENCE - CSBG
                                       184114     VACATION - SSBG/FBG
                                       184115     SICKNESS ALLOWANCE - SSBG/FBG
                                       184116     OTHER PAID ABSENCE - SSBG/FBG
                                       920003     ADMIN & GENERAL SALARIES-JT
                                       921003     NON-LABOR A&G EXPENSES - JOINT
                                       923003     PROFESSIONAL SERVICES-JOINT

002203   MAINTAIN PLANT - NUCLEAR      163301     CPS STOREROOM OPERATING EXP
                                       408113     USE TAX-CPS
                                       510001     MAINT SUPV & ENG-STEAM GEN
                                       513001     MAINT-TURBN GEN & ASSOC EQUIP
                                       517001     OPER SUPV & ENG-NUCLEAR
                                       519001     OPER OF COOLANT & WATER EQUIP
                                       520001     OPERATING REACTOR & AUX
                                       520002     OPER-RADIOLOGICAL CONTROLS
                                       520003     DECONTAMINATION ACTIVITIES
                                       520004     RADIOACTIVE WASTE DISPOSAL
                                       520005     NUCLEAR FUEL LOAD & UNLOAD
                                       523001     OP TURBS/GENRS/ELEC PLT EQUIP
                                       524001     BLDG SERV & MISC NUC OPER EXP
                                       524002     PLANT SECURITY-NUC
                                       528001     MAINT SUPV & ENG-NUCLEAR
                                       529001     MAINT OF LAKES & CANALS


All expenses charged to construction
(FERC 107 & 108) will also be billed

                                          Page 3

                              Clinton Power Station
                      Direct Programs and Project Functions

                                      Project
Program    Program Title              Function       Project Function Title
002203  MAINTAIN PLANT - NUCLEAR       529002     MAINT NUC BLDGS, GROUNDS, IMP
                                       530001     MAINT REACTOR PLANT EQUIPMENT
                                       530002     MAINT CONTROL ROD DRIVE SYSTEM
                                       530003     MAINT REACTOR PLANT PIPING
                                       531001     MAINT ELECTRIC PLANT EQUIP-NUC
                                       531002     MAINT DIESEL DRIVEN GENER-NUC
                                       532001     MAINT STATION SECURITY SYS-NUC
                                       532002     MAINT MISC EQUIP, SMALL TOOLS
                                       532003     MISC MAINT MATERIALS & EXP-NUC
                                       562002     OPERATION OF CPS TRANS SUB
                                       570002     MAINT OF TRANS SUB EQUIP
                                       570003     MAINT OF CPS TRANS SUB EQUIP
                                       582001     DIST SUB PCB DISPOSAL COSTS
                                       583004     OPER OH DIST LINES-UNDER 34.5
                                       593003     MAINT LESS THAN 34.5 OH LINES
                                                  & OH SERV
                                       892001     GAS DIST-MAINT OF SERVICES
                                       915001     COST JOBBING&CONTRACT WRK-ELEC
                                       921003     NON-LABOR A&G EXPENSES-JOINT
                                       926011     OTHER EMPL ACTIVITY EXP-NUC

002204  OPERATE PLANT - NUCLEAR        184501     SUPERVISION
                                       408113     USE TAX-CPS
                                       517001     OPER SUPV & ENG-NUCLEAR
                                       519001     OPER OF COOLANT & WATER EQUIP
                                       520001     OPERATING REACTOR & AUX
                                       520002     OPER-RADIOLOGICAL CONTROLS
                                       520003     DECONTAMINATION ACTIVITIES
                                       520004     RADIOACTIVE WASTE DISPOSAL
                                       523001     OP TURBS/GENRS/ELEC PLT EQUIP
                                       524001     BLDG SERV & MISC NUC OPER EXP
                                       524002     PLANT SECURITY-NUC
                                       524004     REGULATORY FEES - NUCLEAR
                                       528001     MAINT SUPV & ENG-NUCLEAR
                                       923004     PROFESSIONAL SERVICES-NUC

002205  COMPLY W/NUCLEAR REG.REQUIRE   408113     USE TAX-CPS
                                       514001     MAINT OF MISC STEAM PLANT
                                       517001     OPER SUPV & ENG-NUCLEAR
                                       519001     OPER OF COOLANT & WATER EQUIP
                                       520001     OPERATING REACTOR & AUX
                                       520002     OPER-RADIOLOGICAL CONTROLS
                                       523001     OP TURBS/GENRS/ELEC PLT EQUIP


All expenses charged to construction (FERC 107 & 108) will also be billed

                                          Page 4

                              Clinton Power Station
                      Direct Programs and Project Functions

                                      Project
Program    Program Title              Function       Project Function Title
002205  COMPLY W/ NUCLEAR REG. REQUIRE 524001     BLDG SERV & MISC NUC OPER EXP
                                       524002     PLANT  SECURITY-NUC
                                       524004     REGULATORY  FEES - NUCLEAR
                                       524216     MISC EXPENSES - R&D - NUCLEAR
                                       528001     MAINT SUPV & ENG-NUCLEAR
                                       529002     MAINT NUC BLDGS, GROUNDS, IMP
                                       530001     MAINT REACTOR PLANT EQUIPMENT
                                       532002     MAINT MISC EQUIP, SMALL TOOLS
                                       920001     ADMIN & GENERAL SALARIES-ELEC
                                       920003     ADMIN & GENERAL SALARIES-JT
                                       920004     ADMIN & GENERAL SALARIES-NUC
                                       921003     NON-LABOR A&G EXPENSES-JOINT
                                       921004     NON-LABOR A&G EXPENSES - NUC.
                                       924004     PROPERTY INS PREMIUMS-NUC
                                       925003     INJURIES & DAMAGES INS-JT
                                       925004     INJURIES & DAMAGES INS-NUC
                                       925008     EMPL INJ & DAMAGE CLAIMS-NUC
                                       925012     OTHER  INJ & DAMAGE CLAIMS-NUC
                                       926011     OTHER EMPL ACTIVITY EXP-NUC
                                       930208     CO TRADE ASSN DUES & CONT-NUC

002206  PROCURE & MANAGE NUCLEAR FUEL  517001     OPER SUPV & ENG-NUCLEAR

002207  PROCURE & CONTROL MAT'L - NUC. 163301     CPS STOREROOM OPERATING EXP
                                       163303     CLINTON FREIGHT ON MATERIALS
                                       163304     CLINTON MATERIAL INVENTORY ADJ
                                       163305     CPS COMMERCIAL GRADE DED PROG
                                       408113     USE TAX-CPS
                                       517001     OPER SUPV & ENG-NUCLEAR
                                       520001     OPERATING REACTOR & AUX
                                       524001     BLDG SERV & MISC NUC OPER EXP
                                       529002     MAINT NUC BLDGS, GROUNDS, IMP

002208  PROVIDE ADMIN. SUPPORT - NUC.  163301     CPS STOREROOM OPERATING EXP
                                       184209     GARAGE EXPENSES NON-SPECIFIC
                                       184501     SUPERVISION
                                       408113     USE TAX-CPS
                                       517001     OPER SUPV & ENG-NUCLEAR




All expenses charged to construction (FERC 107 & 108) will also be billed

                                         Page 5

                              Clinton Power Station
                      Direct Programs and Project Functions

                                      Project
Program    Program Title              Function       Project Function Title
002208  PROVIDE ADMIN. SUPPORT - NUC.  520001     OPERATING REACTOR & AUX
                                       520002     OPER-RADIOLOGICAL CONTROLS
                                       520005     NUCLEAR FUEL LOAD & UNLOAD
                                       523001     OP TURBS/GENRS/ELEC PLT EQUIP
                                       524001     BLDG SERV & MISC NUC OPER EXP
                                       524002     PLANT SECURITY-NUC
                                       524216     MISC EXPENSES - R&D - NUCLEAR
                                       528001     MAINT SUPV & ENG-NUCLEAR
                                       529001     MAINT OF LAKES & CANALS
                                       529002     MAINT NUC BLDGS, GROUNDS, IMP
                                       530001     MAINT REACTOR PLANT EQUIPMENT
                                       531001     MAINT ELECTRIC PLANT EQUIP-NUC
                                       532002     MAINT MISC EQUIP, SMALL TOOLS
                                       836001     UG STOR-MAIN PURIFY EQUIP
                                       920003     ADMIN & GENERAL SALARIES-JT
                                       920004     ADMIN & GENERAL SALARIES-NUC
                                       921003     NON-LABOR A&G EXPENSES - JOINT
                                       921004     NON-LABOR A&G EXPENSES - NUC.
                                       923003     PROFESSIONAL SERVICES-JOINT
                                       923004     PROFESSIONAL SERVICES-NUC
                                       925004     INJURIES & DAMAGES INS-NUC
                                       925008     EMPL INJ & DAMAGE CLAIMS-NUC
                                       926011     OTHER EMPL ACTIVITY EXP-NUC

002209  MANAGE HUMAN RESOURCES - NUC.  163301     CPS STOREROOM OPERATING EXP
                                       408113     USE TAX-CPS
                                       506001     MISC OPERATING EXPENSES-STEAM
                                       510001     MAINT SUPV & ENG-STEAM GEN
                                       517001     OPER SUPV & ENG-NUCLEAR
                                       519001     OPER OF COOLANT & WATER EQUIP
                                       520001     OPERATING REACTOR & AUX
                                       520002     OPER-RADIOLOGICAL CONTROLS
                                       520004     RADIOACTIVE WASTE DISPOSAL
                                       524001     BLDG SERV & MISC NUC OPER EXP
                                       524002     PLANT SECURITY-NUC
                                       524216     MISC EXPENSES - R&D - NUCLEAR
                                       528001     MAINT SUPV & ENG-NUCLEAR
                                       529001     MAINT OF LAKES & CANALS
                                       529002     MAINT NUC BLDGS, GROUNDS, IMP
                                       531001     MAINT ELECTRIC PLANT EQUIP-NUC


All expenses charged to construction (FERC 107 & 108) will also be billed

                                         Page 6

                              Clinton Power Station
                      Direct Programs and Project Functions

                                      Project
Program    Program Title              Function       Project Function Title
002209  MANAGE HUMAN RESOURCES - NUC.  532002     MAINT MISC EQUIP, SMALL TOOLS
                                       532003     MISC MAINT MATERIALS & EXP-NUC
                                       532006     FABRIC'TN & MACH WRK-IP AREAS
                                       926011     OTHER EMPL ACTIVITY EXP-NUC

002233  JC SSBG & FBG TRANSFER CHARGES 517001     OPER SUPV & ENG-NUCLEAR
                                       520001     OPERATING REACTOR & AUX
                                       523001     OP TURBS/GENRS/ELEC PLT EQUIP
                                       524001     BLDG SERV & MISC NUC OPER EXP
                                       528001     MAINT SUPV & ENG-NUCLEAR
                                       532002     MAINT MISC EQUIP, SMALL TOOLS
                                       532003     MISC MAINT MATERIALS & EXP-NUC
                                       912015     PROMOTE/RETAIN SALES EXP-JT
                                       920001     ADMIN & GENERAL SALARIES-ELEC
                                       920003     ADMIN & GENERAL SALARIES-JT
                                       920004     ADMIN & GENERAL SALARIES-NUC
                                       921001     NON-LABOR A&G EXPENSES - ELEC
                                       921003     NON-LABOR A&G EXPENSES - JOINT
                                       921004     NON-LABOR A&G EXPENSES - NUC.
                                       923001     PROFESSIONAL SERVICES-ELEC
                                       923004     PROFESSIONAL SERVICES-NUC
                                       926008     OTHER EMPL ACTIVITY EXP-ELEC
                                       926010     OTHER EMPL ACTIVITY EXP-JT
                                       926011     OTHER EMPL ACTIVITY EXP-NUC
                                       930205     CO TRADE ASSN DUES & CONT ELEC

002253  YEAR 2000 - ESBG - NUCLEAR     523001     OP TURBS/GENRS/ELEC PLT EQUIP
                                       524001     BLDG SERV & MISC NUC OPER EXP
                                       920003     ADMIN & GENERAL SALARIES-JT
                                       920004     ADMIN & GENERAL SALARIES-NUC
                                       923004     PROFESSIONAL SERVICES-NUC

All expenses charged to construction (FERC 107 & 108) will also be billed

                                         Page 7