Exhibit 99.7

                                                     [Shoreham and Wading River]

                                                                 EXECUTION COPY


                  SECOND OPTION AND PURCHASE AND SALE AGREEMENT



                                 by and between



                       KEYSPAN GENERATION LLC, AS SELLER,



                                       AND



               LONG ISLAND LIGHTING COMPANY d/b/a LIPA, AS BUYER,



                           Dated as of March 22, 2007










                                TABLE OF CONTENTS

                                                                                             Page


                                    ARTICLE I
                      DEFINITIONS AND RULES OF CONSTRUCTION
                                                                                        
         Section 1.1.      Definitions..........................................................1
         Section 1.2.      Rules of Construction................................................8

                                   ARTICLE II
                                 PURCHASE OPTION

         Section 2.1.      Purchase Option......................................................9
         Section 2.2.      Excluded Assets......................................................9
         Section 2.3.      Exercisability.......................................................9
         Section 2.4.      Method of Exercise...................................................9
         Section 2.5.      Exercise Date.......................................................10
         Section 2.6.      Effect of Option Notice.............................................10
         Section 2.7.      Closing Date........................................................10
         Section 2.8.      Payment and Delivery of the Purchased Assets........................10
         Section 2.9.      Assignment and Assumption...........................................10
         Section 2.10.     Provision of Corporate Records......................................11
         Section 2.11.     Non-Recourse........................................................11
         Section 2.12.     Risk of Loss........................................................11

                                   ARTICLE III
                               THE PURCHASE PRICE

         Section 3.1.      Net Book Value; Preliminary Purchase Price..........................12
         Section 3.2.      Post-Closing Purchase Price Adjustments.............................13
         Section 3.3.      Purchase Price Allocation...........................................14

                                   ARTICLE IV
                         REPRESENTATIONS AND WARRANTIES

         Section 4.1.      Representations and Warranties of Seller............................15
         Section 4.2.      Provision of Additional Schedules upon Exercise.....................18
         Section 4.3.      Representations and Warranties of Buyer.............................19
         Section 4.4.      Survival............................................................20

                                    ARTICLE V
                                    COVENANTS

         Section 5.1.      Covenants of Seller.................................................20
         Section 5.2.      Additional Agreements...............................................22


                                       i




                                   ARTICLE VI

         Section 6.1.      Closing Conditions..................................................26
         Section 6.2.      Other Agreements....................................................29

                                   ARTICLE VII
                               GENERAL PROVISIONS

         Section 7.1.      Notices.............................................................29
         Section 7.2.      Headings............................................................30
         Section 7.3.      Miscellaneous.......................................................30
         Section 7.4.      Governing Law.......................................................30
         Section 7.5.      Assignment..........................................................31
         Section 7.6.      Schedules...........................................................31
         Section 7.7.      Waiver; Amendment...................................................31
         Section 7.8.      Indemnification.....................................................31
         Section 7.9.      Issue Taxes.........................................................34
         Section 7.10.     Fees and Expenses...................................................34
         Section 7.11.     Effective Date......................................................34
         Section 7.12.     Termination.........................................................35




       ----------------------------------------- -----------------------------------------------------
        SCHEDULES
                                             
       ----------------------------------------- -----------------------------------------------------
       Schedule I                                Additional Assets
       ----------------------------------------- -----------------------------------------------------
       Schedule II                               Excluded Assets
       ----------------------------------------- -----------------------------------------------------
       Schedule III                              Description and Survey of Shoreham Plant
       ----------------------------------------- -----------------------------------------------------
       Schedule IV                               Description and Survey of Wading River Plant
       ----------------------------------------- -----------------------------------------------------
       Schedule V                                Disclosure Schedule
       ----------------------------------------- -----------------------------------------------------
       ----------------------------------------- -----------------------------------------------------
       ----------------------------------------- -----------------------------------------------------
       EXHIBITS

       ----------------------------------------- -----------------------------------------------------
       Exhibit A                                 Form of Assignment and Assumption Agreement
       ----------------------------------------- -----------------------------------------------------
       Exhibit B                                 Form of Easement Agreement
       ----------------------------------------- -----------------------------------------------------
       Exhibit C                                 Form of Operation and Maintenance Agreement
       ----------------------------------------- -----------------------------------------------------
       Exhibit D                                 Form of Power Supply Agreement Amendment
       ----------------------------------------- -----------------------------------------------------
       Exhibit E                                 Form of Energy Management Agreement Amendment
       ----------------------------------------- -----------------------------------------------------
       Exhibit F                                 Form of Deed
       ----------------------------------------- -----------------------------------------------------



                                       ii




                  SECOND OPTION AND PURCHASE AND SALE AGREEMENT


     This SECOND OPTION AND PURCHASE AND SALE AGREEMENT  (this  "Agreement")  is
made and entered into as of March 22, 2007,  by and between  KEYSPAN  GENERATION
LLC, a limited  liability  company  organized and existing under the laws of the
State of New York ("Seller",  and also referred to herein as "Genco"),  and LONG
ISLAND  LIGHTING  COMPANY d/b/a LIPA, a  wholly-owned  subsidiary of Long Island
Power Authority, a corporate municipal instrumentality and political subdivision
of the State of New York ("Buyer", and also referred to herein as "LIPA").

                                    RECITALS

     WHEREAS,  Seller is the owner of the Shoreham Plant (as defined herein) and
the  Wading  River  Plant  (as  defined  herein)   (together,   the  "Generating
Facilities");

     WHEREAS,  Seller is willing to grant LIPA an option to purchase one or both
of the  Generating  Facilities,  on the terms and subject to the  conditions set
forth herein; and

     WHEREAS,  concurrently  with  the  execution  of  this  Agreement  and as a
condition  to the  effectiveness  of this  Agreement,  Seller and Buyer and,  as
applicable,  certain  of  their  respective  Affiliates,  are  entering  into an
Amendment to the Amended and Restated Management Services Agreement, dated as of
the date hereof ( the "MSA Amendment"), an Agreement and Waiver, dated as of the
date  hereof (the  "Agreement  and  Waiver"),  a First  Amendment  to Option and
Purchase  and  Sale  Agreement,  dated  as  of  the  date  hereof  (the  "Option
Amendment") and certain other related agreements referred to therein.

     NOW, THEREFORE,  in consideration of the foregoing and the mutual covenants
and  agreements   hereinafter   set  forth  and  for  other  good  and  valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto agree as follows:

                                    ARTICLE I
                      DEFINITIONS AND RULES OF CONSTRUCTION

     Section 1.1. Definitions.  All capitalized terms used in this Agreement and
not  otherwise  defined  shall have the  meanings  assigned to them in the Power
Supply Agreement. The following terms, as used herein, shall have the respective
meanings set forth in this Section 1.1:

          "Actual  Knowledge"  means  the  actual  knowledge  of  the  corporate
     officers or managerial representatives of the specified Person charged with
     responsibility  for  the  particular  function  as  of  the  date  of  this
     Agreement,  or, with respect to any certificate  delivered pursuant to this
     Agreement, the date of delivery of the certificate after reasonable inquiry
     by them of selected  employees  of such Person whom they  believe,  in good
     faith, to be the persons responsible for the subject matter of the inquiry.


                                       1



          "Additional  Assets" means all assets used  principally  in connection
     with  the  operation  of  the  Generating  Facilities,  including,  without
     limitation,  the assets set forth on Schedule I hereto,  but  excluding any
     Excluded Assets.

          "Adverse  Consequences"  means  any and all  claims,  demands,  suits,
     losses,  liabilities,  damages,  obligations,  payments, costs and expenses
     (including,  without  limitation,  the  costs and  expenses  of any and all
     actions,  suits,  proceedings,   assessments,  judgments,  settlements  and
     compromises relating thereto and reasonable  attorneys' fees and reasonable
     disbursements in connection therewith).

          "Affiliate" means any Person,  corporation or other entity directly or
     indirectly  controlling  or controlled by another  Person,  corporation  or
     other entity or under direct or indirect  common  control with such Person,
     corporation or other entity.

          "Agreement"  means this Second Option and Purchase and Sale  Agreement
     and all Exhibits and Schedules  annexed hereto, as the same may be amended,
     supplemented or otherwise modified from time to time.

          "Agreement and Waiver" has the meaning  assigned to it in the recitals
     hereto.

          "Amended and Restated Management Services Agreement" means the Amended
     and Restated  Management  Services  Agreement  dated as of January 1, 2006,
     between LIPA and KeySpan Electric Services LLC.

          "Ancillary  Agreements"  means,   collectively,   the  Assignment  and
     Assumption Agreement,  the Deed, the Easement Agreement,  the Operation and
     Maintenance Agreement,  the Power Supply Agreement Amendment and the Energy
     Management Agreement Amendment.

          "Assignment  and  Assumption   Agreement"   means  an  Assignment  and
     Assumption  Agreement to be entered  into  between  Seller and Buyer on the
     Closing Date, substantially in the form attached hereto as Exhibit A.

          "Assessments" has the meaning assigned to it in Section 5.2(e).

          "Assumed  Liabilities"  has  the  meaning  assigned  to it in  Section
     2.9(a).

          "Business"  means,  with  respect  to one or  both  of the  Generating
     Facilities that are part of the Purchased Assets, the business of operating
     such Generating Facilities as they are operated on the date hereof.

          "Business Day" means any day other than  Saturday,  Sunday and any day
     on which banking  institutions  in the State of New York are  authorized by
     law or other governmental action to close.

          "Buyer Indemnified  Parties" has the meaning assigned to it in Section
     7.8(a).


                                       2



          "Buyer Required  Governmental  Approvals" means the approvals required
     by Buyer from the New York State Comptroller, the New York Attorney General
     (as to form) and the PACB to purchase the Purchased Assets.

          "Cap" means 33% of the Purchase Price.

          "Closing Date" has the meaning assigned to it in Section 2.7.

          "Closing  Date Net  Book  Value"  has the  meaning  assigned  to it in
     Section 3.2(a).

          "Closing Objection" has the meaning assigned to it in Section 3.1(b).

          "Closing  Payment  Amount" means the amount payable by Buyer to Seller
     on the Closing Date as an estimate of the  Purchase  Price,  as  determined
     pursuant to Section 3.1.

          "Code" means the Internal Revenue Code of 1986, as amended.

          "Commercially  Reasonable  Efforts" means efforts which are reasonably
     within  the  contemplation  of the  parties at the time of  executing  this
     Agreement and which do not require the performing party to expend any funds
     other than expenditures  which are customary and reasonable in transactions
     of the kind and  nature  contemplated  by this  Agreement  in order for the
     performing party to satisfy its obligations hereunder.

          "Contract"  means any  contract,  agreement,  purchase  order,  lease,
     indenture,   mortgage,   loan  agreement,   note,  guarantee,   commitment,
     undertaking or arrangement of any kind.

          "Deed" means the bargain and sale deed with covenant against grantor's
     acts to be granted  and  delivered  by Genco to LIPA on the  Closing  Date,
     substantially in the form attached hereto as Exhibit F.

          "Direct Claim" has the meaning assigned to it in Section 7.8(c)(iv).

          "Disclosure Schedule" has the meaning assigned to it in Section 4.1.

          "Easement  Agreement" means the Easement Agreements to be entered into
     between  Genco  and its  Affiliates  and  LIPA on the  Closing  Date,  each
     substantially in the form attached hereto as Exhibit B.

          "Effective Date" has the meaning assigned to it in Section 7.11.

          "Emission   Credits"  means  the  allowances  and  credits  issued  or
     certified pursuant to the Federal Clean Air Act or analogous  provisions of
     the  Laws of the  State  of New  York  or  other  regional  or  local  laws
     authorizing  the emission of fixed  quantities of SO2, NOX or CO2 and other
     emission  compounds,  to the extent attributable to the Purchased Assets as
     of the Closing Date.


                                       3



          "Energy Management Agreement" the Energy Management Agreement dated as
     of June 26,  1997,  between  KETS and LIPA,  as  amended,  supplemented  or
     otherwise modified from time to time.

          "Energy  Management  Agreement  Amendment"  means an  amendment to the
     Energy Management Agreement to be entered into between KETS and LIPA within
     five  (5) days  following  the  Exercise  Date,  substantially  in the form
     attached hereto as Exhibit E.

          "Environmental  Claim"  has  the  meaning  assigned  to it in  Section
     4.1(g)(vii)(A).

          "Environmental  Laws"  has  the  meaning  assigned  to it  in  Section
     4.1(g)(vii)(B).

          "Environmental  Permits"  has the  meaning  assigned  to it in Section
     4.1(g)(iii).

          "Estimated  Net Book Value" has the meaning  assigned to it in Section
     3.1(b).

          "Excluded Assets" has the meaning assigned to it in Section 2.2.

          "Excluded  Liabilities"  has the  meaning  assigned  to it in  Section
     2.9(b).

          "Exercise Date" has the meaning assigned to it in Section 2.5.

          "Expiration Date" has the meaning assigned to it in Section 2.3.

          "FERC"  means  the  Federal  Energy  Regulatory  Commission,  and  any
     successor thereto and any analogous Governmental Authority.

          "Final  Closing  Payment  Amount"  has the  meaning  assigned to it in
     Section 3.2(d).

          "Final  Net Book  Value"  has the  meaning  assigned  to it in Section
     3.2(d).

          "GAAP" means United States generally accepted  accounting  principles,
     consistently applied.

          "Generating Facilities" has the meaning assigned to it in the recitals
     hereto.

          "Good Utility  Practices" mean any of the practices,  methods and acts
     engaged in or approved by a  significant  portion of the  electric  utility
     industry during the relevant time period, or any of the practices,  methods
     or acts which, in the exercise of reasonable judgment in light of the facts
     known at the time the  decision  was  made,  could  have been  expected  to
     accomplish the desired  result at a reasonable  cost  consistent  with good
     business  practices,  reliability,  safety  and  expedition.  Good  Utility
     Practices  are  not  intended  to be  limited  to the  optimum  or  minimum
     practices, methods or acts to the exclusion of all others, but rather to be
     acceptable practices, methods or acts generally accepted in the industry.


                                       4



          "Governmental  Authority"  means any  federal,  state,  local or other
     governmental,  regulatory or administrative agency, commission, department,
     board, or other governmental subdivision, court, tribunal, arbitrating body
     or other  governmental  authority  excluding,  however,  Buyer and the Long
     Island Power Authority.

          "Hazardous  Materials"  has  the  meaning  assigned  to it in  Section
     4.1(g)(vii)(C).

          "HSR Act" means the Hart Scott Rodino  Antitrust  Improvements  Act of
     1976, as amended,  including the Premerger  Notification  Rules promulgated
     thereunder.

          "Indemnifiable Loss" has the meaning assigned to it in Section 7.8(a).

          "Indemnifying  Party"  has  the  meaning  assigned  to it  in  Section
     7.8(c)(i).   "Indemnitee"  has  the  meaning  assigned  to  it  in  Section
     7.8(c)(i).

          "Independent Expert" has the meaning assigned to it in Section 3.2(c).

          "Inspection"  means all  tests,  reviews,  examinations,  inspections,
     investigations,  verifications,  samplings and similar activities conducted
     by Buyer or its representatives  with respect to the Purchased Assets prior
     to the Closing Date.

          "Inventories"  means  fuel oil,  materials,  spare  parts  (stock  and
     non-stock),  consumable supplies and chemical and gas inventories  relating
     to the operation of a Generating  Facility  located at, or in transit to, a
     Generating Facility.

          "KETS" means KeySpan Energy Trading Services LLC.

          "Laws" means, with respect to any Person,  any foreign,  United States
     federal,  state or local laws, statutes,  ordinances,  rules or regulations
     applicable to such Person.

          "Liens"  means,  with  respect to any asset,  property or right of any
     Person,  any  mortgage,   lien,  pledge,   charge,   security  interest  or
     encumbrance of any kind in respect of such asset, property or right.

          "Material Adverse Effect" means, with respect to a Generating Facility
     or other asset or property,  events or circumstances which, individually or
     in the  aggregate,  have  had or would  reasonably  be  expected  to have a
     material adverse effect on the business, operations,  properties, financial
     condition or results of operations or the value of such Generating Facility
     or other  asset or  property,  except  for any such  event or  circumstance
     caused by or resulting from (i) an event, change, condition or circumstance
     affecting the generating business in which Seller operates generally;  (ii)
     a change  in  economic  (including  financial,  banking  and/or  securities
     markets),  regulatory or political conditions generally,  including without
     limitation changes in interest rates and changes in demand for electricity;
     or (iii) the announcement or performance of the  transactions  contemplated
     by this Agreement or the use of proceeds thereof.


                                       5



          "Merger" means the business  combination  transaction  provided for in
     the Merger Agreement.

          "Merger Agreement" means the Agreement and Plan of Merger, dated as of
     June 26, 1997,  among  Buyer,  affiliates  of Seller and the other  parties
     named therein, as amended,  supplemented or otherwise modified from time to
     time.

          "MSA Amendment" has the meaning assigned to it in the recitals hereto.

          "National Grid Agreements" means the MSA Amendment,  the Agreement and
     Waiver, this Agreement and the Option Amendment.

          "National  Grid/KeySpan  Closing  Date"  means  the date on which  the
     Certificate  of Merger is filed with the Secretary of State of the State of
     New  York in  connection  with  the  closing  of the  business  combination
     transaction  provided for in the Agreement and Plan of Merger,  dated as of
     February 25, 2006,  between  National Grid plc,  National Grid US8 Inc. and
     KeySpan   Corporation,   pursuant  to  which  National  Grid  US8  Inc.,  a
     wholly-owned  subsidiary  of  National  Grid plc,  will merge with and into
     KeySpan Corporation, with KeySpan Corporation as the surviving entity.

          "Net Book  Value"  means the net book value as  reflected  in Seller's
     books,  determined  in  accordance  with GAAP and  subject  to the  dispute
     provisions of Section 3.2.

          "Notice of  Disagreement"  has the  meaning  assigned to it in Section
     3.2(b).

          "Operation  and  Maintenance   Agreement"   means  the  Operation  and
     Maintenance Agreement to be entered into between Genco and LIPA within five
     (5) days  following the Exercise Date,  substantially  in the form attached
     hereto as Exhibit C.

          "Option" has the meaning assigned to it in Section 2.1.

          "Option Notice" has the meaning assigned to it in Section 2.4.

          "PACB" means the New York Public  Authorities  Control Board,  and any
     successor thereto and any analogous Governmental Authority.

          "Permit"  means  any  permit,  license,  approval,  consent,  order or
     authorization of any Governmental Authority.

          "Permitted  Liens"  means  (i)  statutory  Liens  for  Taxes  or other
     governmental  charges  or  assessments  not  yet due or  delinquent  or the
     validity  of  which  is  being  contested  in  good  faith  by  appropriate
     proceedings  provided that the aggregate amount being so contested does not
     exceed $50,000; (ii) mechanics',  carriers', workers', repairers' and other
     similar  Liens  arising or  incurred  in the  ordinary  course of  business
     relating  to  obligations  as to which  there is no  default on the part of
     Seller or the  validity of which are being  contested  in good  faith,  and


                                       6



     which do not,  individually  or in the  aggregate,  exceed  $50,000;  (iii)
     zoning,  entitlement,  conservation  restriction  and  other  land  use and
     environmental  regulations  by any  Governmental  Authority;  and (iv) such
     other  imperfections  in  or  failure  of  title,  charges,  easements  and
     restrictions  which do not  materially,  individually  or in the aggregate,
     detract  from the  value  of the  Purchased  Assets  as  currently  used or
     materially  interfere  with the present use of the Purchased  Assets and do
     not secure indebtedness.

          "Person"  means,  unless  otherwise   specified,   a  natural  person,
     corporation,   society,  limited  liability  company,  partnership,   joint
     venture,   unincorporated   association   or  other  entity,   including  a
     Governmental Authority.

          "PILOT  Agreement"  means an  agreement  entered  into by Seller or an
     Affiliate of Seller and a local municipality providing for payments in lieu
     of real estate or similar Taxes.

          "Power Supply Agreement" means the Power Supply Agreement, dated as of
     June 26,  1997,  between  Genco  and  LIPA,  as  amended,  supplemented  or
     otherwise modified from time to time.

          "Power  Supply  Agreement  Amendment"  means an amendment to the Power
     Supply  Agreement to be entered into between Genco and LIPA within five (5)
     days following the Exercise Date, substantially in the form attached hereto
     as Exhibit D.

          "Prime Rate" means the rate  announced by Citibank,  N.A. from time to
     time at its  principal  office  as its  prime  lending  rate  for  domestic
     commercial  loans,  such rate to change when and as such prime lending rate
     changes.

          "Proprietary  Information" of a party means all information  about the
     party  or  its  Affiliates,   including  their  respective   properties  or
     operations,  furnished  to the other  party or its  representatives  by the
     party or its  representatives,  after the date  hereof,  regardless  of the
     manner or medium in which it is furnished. Proprietary Information does not
     include  information  that:  (a) is or becomes  generally  available to the
     public,  other than as a result of a  disclosure  by the other party or its
     representatives;  (b) was known by or  available  to the  other  party on a
     nonconfidential  basis  prior  to  its  disclosure  by  the  party  or  its
     representatives;   (c)   becomes   available   to  the  other  party  on  a
     nonconfidential   basis  from  a  person,  other  than  the  party  or  its
     representatives,  who is not otherwise bound by a confidentiality agreement
     with the  party  or its  representatives,  or is not  otherwise  under  any
     obligation to the party or any of its  representatives  not to transmit the
     information  to  the  other  party  or  its  representatives;   or  (d)  is
     independently developed by the other party.

          "Purchase Price" has the meaning assigned to it in Section 3.1(b).

          "Purchased Assets" means either or both of the Generating  Facilities,
     as specified in the Option Notice  delivered by Buyer  hereunder,  together
     with the Additional Assets and the Related Assets related to such specified
     Generating Facilities.


                                       7



          "Reference  Net Book Value" has the meaning  assigned to it in Section
     3.1(a).

          "Related  Assets"  means the  construction  work in progress  balances
     related to a Generating  Facility  together with the materials and supplies
     related to such facility held by Seller.

          "Release" has the meaning assigned to it in Section 4.1(g)(vii)(D).

          "SEC" means the Securities and Exchange Commission,  and any successor
     thereto and any analogous Governmental Authority.

          "Seller Indemnified Parties" has the meaning assigned to it in Section
     7.8(b).

          "Shoreham  Plant" means the Shoreham  combustion  turbine Units Nos. 1
     and 2, consisting of a 50 MW GE Frame 7 turbine and a 20 MW Pratt & Whitney
     turbine, respectively,  together with the related plant site, as delineated
     on the survey attached hereto as Schedule III.

          "Taxes" means all taxes, assessments and charges imposed by any United
     States  federal,  state or local  taxing  authority  or any foreign  taxing
     authority, including, without limitation, interest, penalties and additions
     thereto.

          "Third  Party  Claim"  has  the  meaning  assigned  to it  in  Section
     7.8(c)(i).

          "Threshold"  means  (i) if  both  of  the  Generating  Facilities  are
     purchased  by  Buyer,  $500,000  or  (ii)  if  only  one of the  Generating
     Facilities is purchased by Buyer, $250,000.

          "Treasury  Regulations"  means the regulations  promulgated  under the
     Code from time to time, as amended.

          "2006 Agreements" means the Amended and Restated  Management  Services
     Agreement (as defined herein), the Settlement Agreement and Release,  dated
     as of January 1, 2006, among KeySpan  Corporation,  Genco, KeySpan Electric
     Services LLC and KETS and LIPA and the Long Island Power  Authority and the
     Option  and  Purchase  and Sale  Agreement,  dated as of  January  1, 2006,
     between Genco and LIPA.

          "Wading River Plant" means the Wading River  combustion  turbine Units
     Nos.  1, 2,  and 3,  each  consisting  of an 80 MW GE  Frame  7EA  turbine,
     together with the related plant site, as delineated on the survey  attached
     hereto as Schedule IV.


     Section 1.2. Rules of Construction. Unless the context otherwise requires:

     (a) Words in the  singular  include  the  plural,  and words in the  plural
include the singular;

     (b) Provisions apply to successive events and transactions;


                                       8



     (c) An accounting term not otherwise defined has the meaning assigned to it
in accordance with GAAP;

     (d)  "Herein",  "hereof"  and other words of similar  import  refer to this
Agreement  as a whole  and  not to any  particular  Article,  Section  or  other
subdivision of this Agreement;

     (e) Words in the masculine  gender include the feminine gender and words in
feminine gender include the masculine gender; and

     (f) The Article and Section  headings  used or contained in this  Agreement
are for  convenience of reference only and shall not affect the  construction of
this Agreement.

                                   ARTICLE II

                                 PURCHASE OPTION

     Section 2.1.  Purchase Option.  Subject to the terms and conditions of this
Agreement,  Seller hereby grants to Buyer an irrevocable  option to purchase the
Generating  Facilities,  or either of them, together with the related Additional
Assets and the Assumed Liabilities (the "Option").

     Section 2.2. Excluded Assets.  Notwithstanding  anything to the contrary in
this  Agreement,  nothing in this Agreement  will  constitute or be construed as
conferring  on Buyer,  and Buyer is not being granted an option to acquire or is
not  otherwise  acquiring,  any  right,  title or  interest  in or to any of the
specific  assets,  Contracts and real  property  described on Schedule II hereto
(the "Excluded Assets"), which are hereby excluded from the Purchased Assets.

     Section  2.3.  Exercisability.   Subject  to  the  further  terms  of  this
Agreement,  the Option shall become  exercisable  at any time after the National
Grid/KeySpan  Closing Date.  The Option shall expire and cease to be exercisable
at 3:00 p.m.  on May 31, 2008 (the "Expiration Date").

     Section 2.4.  Method of Exercise.  The Option may be exercised  only by the
giving of a written notice by Buyer (the "Option  Notice") to the Seller in such
form and in such manner as is  prescribed  in Section 7.1 herein,  setting forth
which of the  Generating  Facilities,  or both of them,  Buyer  has  elected  to
purchase.  If  Buyer  delivers  an  Option  Notice  with  respect  to one of the
Generating  Facilities prior to the Expiration  Date, it may subsequently  amend
the Option Notice to include the other Generating  Facility by the delivery of a
notice to the Seller at any time prior to the Expiration Date;  provided,  that,
in  such  event,  (i)  the  sale of both  Generating  Facilities  and the  other
Purchased  Assets  must occur  simultaneously  on a single  Closing  Date,  (ii)
notwithstanding such amendment,  the Exercise Date shall remain unchanged as the
date that the original  Option  Notice was  delivered as provided in Section 2.5
and (iii) the parties  shall  prior to the Closing  Date enter into a new Energy
Management  Agreement  Amendment  (substantially  in the form attached hereto as
Exhibit E) and a new Power Supply Agreement Amendment (substantially in the form
attached hereto as Exhibit D) to replace any already signed, in order to reflect
such  amended  Option  Notice,  and  enter  into an  Operation  and  Maintenance


                                       9



Agreement  (substantially in the form attached hereto as Exhibit C) with respect
to such Generating  Facility that is the subject of such  amendment.  The Option
Notice (and any amendment  thereof  referred to above) must be  accompanied by a
certification  by an authorized  officer of LIPA that the exercise of the Option
has been affirmatively approved by the vote of the LIPA Board of Trustees.

     Section 2.5. Exercise Date. The date of exercise of the Option shall be the
date on which the  Option  Notice is  delivered  to  Seller  at its  address  as
provided in Section 7.1 of this Agreement (the "Exercise Date").

     Section 2.6. Effect of Option Notice.  Upon receipt of the Option Notice by
Seller,  Buyer and Seller shall be legally bound to consummate the  transactions
contemplated  hereby  subject to (i) the  satisfaction  or waiver of each of the
conditions  precedent  set  forth  in  Article  VI  hereof,  including,  without
limitation,  receipt of all Buyer Required Governmental Approvals,  and (ii) all
of the other terms and conditions hereof.

     Section  2.7.  Closing  Date.  The  closing  date of the sale,  conveyance,
assignment and transfer by Seller,  and the purchase by Buyer,  of the Purchased
Assets pursuant to this Agreement and the other transactions contemplated hereby
will be a date, as mutually agreed by the parties,  following  satisfaction  (or
waiver) of all  conditions  precedent  to  closing  set forth in Article VI (the
"Closing  Date"),  which date shall not be later than  one-hundred  twenty (120)
days following such satisfaction (or waiver), at a location to be agreed upon by
the parties hereto following the Exercise Date. The Closing Date may be extended
by the written agreement of the parties hereto.

     Section 2.8. Payment and Delivery of the Purchased  Assets.  On the Closing
Date, Seller shall deliver to Buyer the Assignment and Assumption Agreement, the
Deed and any other documents which, together, are sufficient to cause the entire
right,  title and interest in the Purchased  Assets to be  transferred to Buyer,
beneficially and of record, and in consideration  thereof (i) Buyer shall pay to
Seller an amount in cash equal to the Closing  Payment Amount and (ii) Genco and
LIPA shall enter into the Ancillary Agreements. All such payments and deliveries
shall be  deemed to occur  simultaneously  as a single  transaction  and no such
payment or delivery  shall be effective  unless all such payments and deliveries
have been made.

     Section 2.9. Assignment and Assumption.

          (a) Assumed  Liabilities.  Pursuant to the  Assignment  and Assumption
     Agreement,  Buyer shall assume all liabilities and obligations with respect
     to the Purchased  Assets  arising on or after the Closing Date and those it
     currently  has under the Merger  Agreement  and the Power Supply  Agreement
     during its term, including, without limitation,  asbestos and certain other
     environmental  liabilities (all such liabilities and obligations assumed by
     Buyer being collectively, the "Assumed Liabilities").

          (b) Excluded  Liabilities.  Pursuant to the  Assignment and Assumption
     Agreement,  Seller shall retain (i) all liabilities and obligations related
     to the Purchased  Assets which relate to periods prior to the Closing Date,


                                       10



     other than the Assumed Liabilities,  [(ii) all liabilities and obligations,
     including environmental liabilities,  relating to the Excluded Assets], and
     (iii) all  liabilities  and  obligations  it has  assumed  under the Merger
     Agreement  and the Power Supply  Agreement  with  respect to the  Purchased
     Assets, including,  without limitation,  liabilities regarding manufactured
     gas plant sites (all such  liabilities and  obligations  retained by Seller
     being collectively, the "Excluded Liabilities").

          (c) Liabilities and Undertaking Agreement. The parties acknowledge and
     agree that the Liabilities and Undertaking Agreement as clarified by letter
     dated May 28,  1998  shall  remain in effect  and shall not be deemed to be
     modified by anything to the contrary in Sections 2.9(a) and (b) above.

     Section 2.10.  Provision of Corporate Records.  On the Closing Date, Seller
shall transfer to Buyer,  at Seller's  cost, the records in Seller's  possession
relating to the Purchased Assets, including,  without limitation, all Contracts,
litigation  files and filings with any  Governmental  Authority  relating to the
Purchased Assets,  except to the extent such items are already in the possession
of Buyer,  provided that, during normal business hours and on reasonable notice,
Buyer will  provide  Seller  access to all such books and  records  that  Seller
reasonably deems necessary to comply with Section 3.2.

     Section 2.11.  Non-Recourse.  The sale and purchase of the Purchased Assets
shall be made on an  "as-is"  basis  without  recourse  to Seller,  and  without
representation,  covenant or warranty by Seller,  express or implied,  except in
each case as expressly set forth in this Agreement.

     Section 2.12. Risk of Loss.

          (a)  Borne by  Seller.  Except  to the  extent  set forth in the Power
     Supply  Agreement,  from the date hereof through the Closing Date, all risk
     of loss or damage to the property included in the Purchased Assets shall be
     borne by Seller, other than loss or damage caused by the acts or negligence
     of Buyer, which loss or damage shall be the responsibility of Buyer.

          (b) Casualty;  Condemnation.  If before the Closing  Date,  all or any
     portion of the  Purchased  Assets is (i) taken by eminent  domain or is the
     subject of a pending or (to the Actual  Knowledge  of Seller)  contemplated
     taking which has not been consummated, or (ii) damaged or destroyed by fire
     or other  casualty,  Seller shall notify Buyer  promptly in writing of such
     fact, then if the parties consummate the transactions  contemplated  hereby
     (including   payment  of  the  Purchase  Price),  (x)  in  the  case  of  a
     condemnation,  Seller shall assign or pay, as the case may be, any proceeds
     thereof to Buyer on the Closing Date (to the extent  received  prior to the
     Closing Date or promptly  upon receipt if received  thereafter)  and (y) in
     the case of a casualty,  Seller shall  either  restore the damage or assign
     the  insurance  proceeds  therefor  (and pay the  amount of any  deductible
     and/or  self-insured  amount in respect of such  casualty)  to Buyer on the
     Closing Date (to the extent  received prior to the Closing Date or promptly
     upon receipt if received  thereafter).  Notwithstanding  the above, if such
     casualty or loss results in a Material  Adverse Effect prior to the Closing


                                       11



     Date and the parties  elect to  consummate  the  transactions  contemplated
     hereby,  Buyer and Seller shall negotiate to settle the loss resulting from
     such taking (and such negotiation shall include,  without  limitation,  the
     negotiation  of a fair and  equitable  adjustment  to the  Closing  Payment
     Amount and Final Closing Payment Amount).  If no such settlement is reached
     within sixty (60) days after Seller has notified  Buyer of such casualty or
     loss, then Buyer or Seller may terminate this Agreement pursuant to Section
     7.12(e).  In the event of  damage or  destruction  which  Seller  elects to
     restore,  Seller will have the right to postpone the Closing Date for up to
     four (4)  months.  Buyer will have the right to  inspect  and  observe  all
     repairs necessitated by any such damage or destruction.

                                  ARTICLE III
                               THE PURCHASE PRICE

     Section 3.1. Net Book Value; Preliminary Purchase Price.

          (a) Not later than April 30,  2007,  Seller shall  provide  Buyer with
     Seller's  determination of the Net Book Value of each Generating  Facility,
     the Related Assets and the Additional  Assets as of December 31, 2006 based
     on Seller's  audited  financial  statements as of such date (the "Reference
     Net Book Value"),  together with the working  papers of Seller and Seller's
     independent  public  accountants  relating to the Reference Net Book Value.
     Seller  will  also  make  its   representatives   and  independent   public
     accountants  reasonably  available from time to time during normal business
     hours to address questions with respect thereto raised by Buyer and Buyer's
     representatives.

          (b) The purchase  price for the Purchased  Assets  ("Purchase  Price")
     shall be 1.25 times the Net Book Value of the Purchased  Assets (other than
     the Related Assets for which the Purchase Price shall equal to the Net Book
     Value of thereof) on the Closing  Date.  Not less than thirty (30) Business
     Days prior to the Closing Date,  Seller will cause to be delivered to Buyer
     a good faith estimate of the Net Book Value of the Purchased  Assets on the
     Closing Date determined in accordance with GAAP and in a manner  consistent
     with the  determination of the Reference Net Book Value (the "Estimated Net
     Book Value") and a statement  showing the determination  thereof,  together
     with the working papers of Seller (and of Seller's independent accountants,
     if  any  such  accountants  were  engaged  by  Seller  to  assist  in  such
     determination)  relating to the  Estimated  Net Book  Value.  Not less than
     fifteen  (15)  Business  Days prior to the Closing  Date,  Buyer may notify
     Seller in writing  (the  "Closing  Objection")  that it objects to Seller's
     determination of the Estimated Net Book Value. Any Closing  Objection shall
     specify in reasonable detail the basis for Buyer's objections.  If Buyer so
     notifies Seller of a Closing Objection,  Seller and Buyer shall, during the
     fifteen (15) Business Day period following  Seller's receipt of the Closing
     Objection,  attempt  in good  faith to  resolve  the items set forth in the
     Closing  Objection.  If the  parties  resolve  the  items  in  the  Closing
     Objection,  the Closing  Payment  Amount shall be 1.25 times such amount of
     the Estimated Net Book Value agreed upon by the parties with respect to the


                                       12



     Purchased  Assets (other than with respect to the Related  Assets for which
     the Closing  Payment Amount shall be equal to such amount).  If the parties
     are unable to resolve Buyer's objections,  the Closing Payment Amount shall
     be 1.20  times the  Reference  Net Book Value of all the  Purchased  Assets
     (other  than with  respect  to the  Related  Assets  for which the  Closing
     Payment Amount shall be .95 times the Reference Net Book Value).  If Seller
     does not receive a Closing  Objection  within the  applicable  fifteen (15)
     Business  Day period,  the Closing  Payment  Amount shall be 1.25 times the
     Estimated Net Book Value with respect to the  Purchased  Assets (other than
     with  respect to the Related  Assets for which the Closing  Payment  Amount
     shall be the Estimated Net Book Value).

     Section 3.2. Post-Closing Purchase Price Adjustments.

          (a) On or before sixty (60) days  following the Closing  Date,  Seller
     shall  prepare  and deliver to Buyer an updated  statement  of the Net Book
     Value of the Purchased  Assets adjusted to the extent  necessary to reflect
     the  Net  Book  Value  of the  Purchased  Assets  as of the  Closing  Date,
     determined  in  accordance  with GAAP and in a manner  consistent  with the
     determination  of the  Reference Net Book Value (the "Closing Date Net Book
     Value").

          (b) Unless Buyer  notifies  Seller in writing  within thirty (30) days
     after  Buyer's  receipt of the Closing Date Net Book Value of any objection
     to the determination of Net Book Value (the "Notice of Disagreement"),  the
     Closing  Date Net Book Value shall become final and binding for purposes of
     determining the Purchase Price.  During the 30-day period following Buyer's
     receipt  of  the   Closing   Date  Net  Book   Value,   Buyer  and  Buyer's
     representatives  will be permitted  to review the working  papers of Seller
     and Seller's  independent public accountants,  if any such accountants were
     engaged by Seller to assist in such determination,  relating to the Closing
     Date Net Book Value and any financial  records  relevant to the preparation
     of the Closing  Date Net Book  Value,  provided  that such access  shall be
     during  normal  business  hours.  Seller and  Seller's  independent  public
     accountants  will also be  reasonably  available  from time to time  during
     normal  business  hours to address  related  questions  raised by Buyer and
     Buyer's representatives.

          (c) Any Notice of Disagreement  shall specify in reasonable detail the
     basis for the objections set forth therein. The objections contained in the
     Notice of Disagreement may relate to any aspect of the determination of the
     Closing Date Net Book Value, including,  without limitation,  the proper or
     consistent  application of GAAP,  capital additions,  capital  retirements,
     cost  of  removal,   annual   depreciation   allocations   and   arithmetic
     calculations.   Notwithstanding  any  Option  exercise  by  Buyer,  Buyer's
     acquisition  of the Purchased  Assets based on the Reference Net Book Value
     or the  Estimated  Net Book Value,  or the net book value of the  Purchased
     Assets as may be reflected on Seller's books,  the parties  acknowledge and
     agree that all rights Buyer has hereunder to raise objections in the Notice
     of  Disagreement  shall  not be  prejudiced  or  waived  and are  expressly
     reserved.  If Buyer gives a Notice of  Disagreement  to Seller  within such
     30-day period,  Seller and Buyer shall,  during the 30-day period following
     Seller's  receipt of the Notice of  Disagreement,  attempt in good faith to


                                       13



     resolve Buyer's objections.  During such 30-day period, Seller and Seller's
     representatives  shall be permitted  to review the working  papers of Buyer
     and Buyer's representatives  relating to the Notice of Disagreement and the
     basis therefor.  Buyer and Buyer's  representatives will also be reasonably
     available from time to time during normal business hours to address related
     questions raised by Seller and Seller's independent public accountants.  If
     Seller and Buyer are  unable to resolve  all such  objections  within  such
     30-day period,  the matters  remaining in dispute shall be submitted to the
     New York,  New York office of Grant  Thornton LLP or such other  accounting
     firm as the parties may agree (the "Independent Expert"). Each of Buyer and
     Seller represent and warrant that it neither has nor has had, and covenants
     that it will  not  engage  in, a  relationship  that  could  be  reasonably
     interpreted  to  compromise  the  Independent  Expert's  independence.  The
     parties shall instruct the Independent  Expert to render a reasoned written
     decision  addressing  the issues raised in the Notice of  Disagreement  and
     determining  whether  the  Closing  Date Net Book Value was  determined  in
     accordance with GAAP, consistently applied beginning from May 28, 1998, and
     the  provisions  of this  agreement,  which  decision  shall be rendered as
     promptly as  practicable  but in no event later than thirty (30) days after
     its selection.  If the Independent  Expert determines that the Closing Date
     Net Book Value as  prepared  by Seller  and  submitted  to the  Independent
     Expert was not  determined  in accordance  with GAAP and the  provisions of
     this  Agreement,  it shall  determine the Closing Date Net Book Value.  The
     resolution of disputed items and  determination  by the Independent  Expert
     shall be final and binding. The fees and expenses of the Independent Expert
     shall be shared equally by Seller and Buyer.

          (d) The  Purchase  Price shall be an amount  equal to the Closing Date
     Net Book Value determined pursuant to this Section 3.2 (the "Final Net Book
     Value") multiplied by 1.25 for the Purchased Assets (other than the Related
     Assets for which the  Purchase  Price shall be an amount equal to the Final
     Net Book Value) (the "Final Closing Payment Amount").  If the Final Closing
     Payment Amount is less than the Closing Payment Amount, Seller shall pay or
     cause to be paid to Buyer, an amount equal to the amount by which the Final
     Closing  Payment Amount is less than the Closing  Payment Amount  (together
     with  interest  thereon from the Closing Date to the date paid at the Prime
     Rate).  If the Final  Closing  Payment  Amount is greater  than the Closing
     Payment  Amount,  Buyer shall pay or cause to be paid to Seller,  an amount
     equal to the amount by which  Final  Closing  Payment  Amount  exceeds  the
     Closing  Payment Amount  (together  with interest  thereon from the Closing
     Date to the date paid at the Prime  Rate).  All  payments  pursuant to this
     Section  3.2(d),  if any,  shall be made by wire  transfer  of  immediately
     available funds within three (3) Business Days after final determination of
     the amounts to be so paid.

     Section 3.3. Purchase Price Allocation. The parties agree that the Purchase
Price shall be allocated in accordance  with the rules under Section 1060 of the
Code and the Treasury Regulations promulgated  thereunder.  Seller shall prepare
such  allocation  subject to review by the Buyer.  The  Parties  agree to act in
accordance with the computations and allocations as determined  pursuant to this
Section  3.3 in any  relevant  Tax returns or  filings,  including  any forms or


                                       14



reports  required to be filed pursuant to Section 1060 of the Code, the Treasury
Regulations promulgated thereunder or any provisions of local, state and foreign
law,  and to  cooperate  in the  preparation  of any such forms and to file such
forms in the manner  required by applicable  law. Any issues with respect to the
allocation which have not been finally resolved within sixty (60) days following
the closing of the  transactions  contemplated  hereby  shall be referred to the
Independent  Expert  whose  determination  shall be final and  binding  upon the
parties.

                                   ARTICLE IV

                         REPRESENTATIONS AND WARRANTIES

     Section 4.1.  Representations  and Warranties of Seller.  Seller represents
and warrants to Buyer on the date hereof and on the Closing Date that, except as
set  forth on  Schedule  V and as  provided  in  Section  4.2  (the  "Disclosure
Schedule"):

          (a) Ownership of Purchased  Assets.  On the Closing Date,  Seller will
     own and hold,  beneficially  and of  record,  the entire  right,  title and
     interest in and to all of the Purchased Assets free and clear of all Liens,
     other than Permitted Liens.

          (b) Execution and  Enforceability.  Seller has all requisite power and
     authority  to  execute  and  deliver  this   Agreement  and  the  Ancillary
     Agreements and to perform each of its obligations hereunder and thereunder.
     Seller has duly authorized the execution,  delivery and performance of this
     Agreement and, as appropriate, the Ancillary Agreements. This Agreement is,
     upon receipt of Buyer Required Governmental  Approvals,  and, when executed
     and  delivered,  the  Ancillary  Agreements  will be, the legal,  valid and
     binding  obligations  of  Seller,  and  (assuming  the  due  authorization,
     execution and delivery by Buyer) is and will be, enforceable against Seller
     in accordance with their respective terms.

          (c)  Organization  and  Qualification  of Seller.  Seller is a limited
     liability  company duly  organized,  validly  existing and in good standing
     under  the laws of the  State of New York and has all  requisite  power and
     authority  to conduct its business as then  conducted  and to own and lease
     its properties  and assets.  Seller is qualified to do business and in good
     standing in each jurisdiction in which the ownership of its property or the
     conduct of its business then requires such qualification.

          (d) No Violations or Conflicts.  Neither the execution and delivery of
     this Agreement by Seller nor the consummation by Seller of the transactions
     contemplated  by this  Agreement  on the  Closing  Date  (i)  violates  the
     articles of  organization,  the  operating  agreement or other  constituent
     instruments  of  Seller,  (ii)  results  in a  violation  or breach  of, or
     constitutes  a  default  or an event of  default  under,  any bond or other
     material Contract,  Permit,  instrument or other obligation to which Seller
     is a party, or (iii) violates any Laws, writ, judgment, injunction or court
     decree.


                                       15



          (e)  Consents  and  Approvals.  Except  for the  approval  of the FERC
     pursuant  to Section 203 of the  Federal  Power Act of the  transfer of the
     Purchased  Assets on the  Closing  Date or as  otherwise  provided  in this
     Agreement or as set forth on the Disclosure Schedule, no consent,  approval
     or  authorization  of, or  declaration,  filing or  registration  with, any
     Governmental  Authority  is  required  to be made or  obtained by Seller in
     connection  with the execution,  delivery and performance of this Agreement
     by Seller.  Except as set forth on the  Disclosure  Schedule,  no  consent,
     approval or authorization by, or notice to, any other Person is required to
     be made or obtained by Seller in connection  with the  execution,  delivery
     and  performance  of this  Agreement by Seller.  On the Closing  Date,  all
     notices or other actions required to be made or taken, if any,  pursuant to
     any applicable Laws to permit the closing of the transactions  contemplated
     by this Agreement will have been made and taken.

          (f) Compliance  with Laws;  Permits.  The Business is in compliance in
     all material respects with all Laws and Seller has not received any written
     notice to the  contrary  from any  Governmental  Authority.  Seller has all
     material  Permits  required  for it to conduct the Business and no material
     violations  have been  recorded in respect of any Permits and no proceeding
     is pending or, to the Actual  Knowledge of Seller,  threatened with respect
     to the limitation or revocation of any Permit.

          (g)  Environmental  Protection.  Except as set forth in the Disclosure
     Schedule,  or except as would not  reasonably  be  expected  to result in a
     Material Adverse Effect on the Purchased Assets, to the Actual Knowledge of
     the Seller:

               (i)  Compliance.  Seller  is  in  material  compliance  with  all
          Environmental   Laws  (as  defined  below  in  this  Section   4.1(g))
          applicable to the Generating  Facilities;  and Seller has not received
          any  communication  (written or oral) from any Person  (including  any
          Governmental  Authority)  that  alleges  that  Seller  is not in  such
          compliance with applicable Environmental Laws.

               (ii) Environmental  Claims.  Seller has no notice of any material
          Environmental  Claim (as defined below in this Section 4.1(g)) pending
          against Seller with respect to the Generating Facilities.

               (iii) Environmental  Permits.  Seller has obtained or has applied
          for all material environmental health and safety permits and all other
          governmental licenses, permits and authorizations  (collectively,  the
          "Environmental   Permits")  necessary  for  the  construction  of  the
          facilities  constituting  part  of the  Generating  Facilities  or the
          ownership  or  operation  of  such   facilities   or  the   Generating
          Facilities,  and all such  Environmental  Permits are in good standing
          or, where applicable,  a renewal application has been timely filed and
          is pending agency approval,  and Seller is in material compliance with
          all terms and conditions of the Environmental Permits.

               (iv)  Releases.  There has been no Release (as  defined  below in
          this Section  4.1.(g)) of any Hazardous  Material (as defined below in
          this Section 4.1(g)) at either of the Generating Facilities that would
          be reasonably  likely to form the basis of any material  Environmental
          Claim against Seller.


                                       16



               (v)  Predecessors.  Seller has no knowledge,  with respect to any
          predecessor  of  Seller,  of any  material  Environmental  Claim  with
          respect to the Generating Facilities pending or threatened,  or of any
          Release of Hazardous Materials that would be reasonably likely to form
          the basis of any material Environmental Claim.

               (vi) Disclosure. Seller has disclosed to Buyer all material facts
          which it reasonably believes,  based on applicable Law as in effect on
          the date hereof and on the Closing Date,  form the basis of a material
          Environmental  Claim  arising from (A) the cost of  pollution  control
          equipment  currently  required  or known to be  required in the future
          with respect to the  Generating  Facilities;  (B) current  remediation
          costs or remediation and site monitoring costs known to be required in
          the future with respect to the Generating Facilities; or (C) any other
          environmental matter affecting the Generating Facilities.

               (vii) As used in this Agreement:

                    (A) "Environmental  Claim" means any and all administrative,
               regulatory or judicial actions,  suits, demands,  demand letters,
               directives, claims, liens, investigations, proceedings or notices
               of  noncompliance  or  violation  (written or oral) by any Person
               (including  any  Governmental   Authority)   alleging   potential
               liability    (including,     without    limitation,     potential
               responsibility  for or liability for  enforcement,  investigatory
               costs, cleanup costs, governmental response costs, removal costs,
               remedial costs,  natural  resources  damages,  property  damages,
               personal  injuries  or  penalties)  arising  out of,  based on or
               resulting from (a) the presence, or Release or threatened Release
               into the environment,  of any Hazardous Materials at any location
               constituting  a  portion  of the  Generating  Facilities;  or (b)
               circumstances  forming  the basis of any  violation,  or  alleged
               violation,   of  any   Environmental  Law  with  respect  to  the
               Generating  Facilities;  or (c) any and all  claims  by any third
               party  seeking  damages,  contribution,   indemnification,   cost
               recovery,  compensation or injunctive  relief  resulting from the
               presence or Release of any  Hazardous  Materials  with respect to
               the Generating Facilities.

                    (B)  "Environmental  Laws" means all federal,  state,  local
               Laws,  ordinances,  rules and regulations  relating to health and
               safety,   pollution,   the   environment   (including,    without
               limitation, ambient air, surface water, groundwater, land surface
               or subsurface strata) or protection of human health as it relates
               to  the  environment  including,  without  limitation,  laws  and
               regulations  relating  to  Releases  or  threatened  Releases  of
               Hazardous  Materials,  or otherwise  relating to the manufacture,
               processing,  distribution,  use,  treatment,  storage,  disposal,
               transport or handling of Hazardous Materials.


                                       17



                    (C)  "Hazardous   Materials"  means  (A)  any  petroleum  or
               petroleum products,  radioactive materials,  asbestos in any form
               that  is  or  could  become  friable,   urea   formaldehyde  foam
               insulation,  and  transformers  or other  equipment  that contain
               dielectric fluid containing  polychlorinated  biphenyls;  and (B)
               any chemicals,  materials or substances  which are now defined as
               or  included  in  the   definition  of  "hazardous   substances",
               "hazardous wastes",  "hazardous materials",  "extremely hazardous
               wastes",   "restricted  hazardous  wastes",  "toxic  substances",
               "toxic  pollutants",  or  words  of  similar  import,  under  any
               Environmental   Law;  and  (C)  any  other  chemical,   material,
               substance or waste, exposure to which is now prohibited,  limited
               or regulated  under any  Environmental  Law in a jurisdiction  in
               which the Generating Facilities are operated.

                    (D) "Release" means any release,  spill, emission,  leaking,
               injection, deposit, disposal,  discharge,  dispersal, leaching or
               migration  into  the  atmosphere,  surface  or  subsurface  soil,
               surface water,  saltwater shoreline or floor bottom,  groundwater
               or  property   from  or  affecting   either  of  the   Generating
               Facilities.

          (h) Litigation. There is no claim, suit, litigation,  investigation or
     proceeding  pending,  or to the  Actual  Knowledge  of  Seller  threatened,
     against Seller in any court,  by any  Governmental  Authority or before any
     arbitrator or other tribunal relating to this Agreement or the transactions
     contemplated  hereby that would  reasonably  be expected to have a Material
     Adverse Effect on Seller's  ability to perform its  obligations  hereunder.
     Seller is not subject to any outstanding  action,  order,  writ,  judgment,
     injunction  or decree of any court or  Governmental  Authority  relating to
     this  Agreement  or  the  transactions   contemplated   hereby  that  would
     reasonably  be  expected  to have a  Material  Adverse  Effect on  Seller's
     ability to perform its obligations hereunder.

     Section  4.2.  Provision  of  Additional   Schedules  upon  Exercise.   The
Disclosure Schedule provided on the date hereof pursuant to Section 4.1 is valid
as of the date  hereof.  Seller may at any time up to twenty  (20) days prior to
the Closing Date provide Buyer with an updated Disclosure Schedule,  the last of
which  will be valid as of the  Closing  Date.  Unless  Buyer  has the  right to
terminate  this  Agreement   pursuant  to  Section  7.12(d)  by  reason  of  the
developments  reflected on one or more updated Disclosure Schedules  (considered
individually or in the aggregate with any such prior developments) and exercises
the right within ten (10) days after such right accrues,  but in any event prior
to the Closing Date, the provision of the updated  Disclosure  Schedule pursuant
to this Section 4.2 will be deemed to have amended this Agreement, including the
Disclosure  Schedule,  to have  qualified  the  representations  and  warranties
contained in Section 4.1, and to have cured any  misrepresentation  or breach of
warranty  that  otherwise  might  have  existed   hereunder  by  reason  of  the
developments.


                                       18



     Section 4.3.  Representations  and Warranties of Buyer. Except as otherwise
disclosed to Seller in writing,  Buyer  represents and warrants to Seller on the
date hereof and on the Closing Date as follows:

          (a) Power and Authority.  Buyer has all requisite  power and authority
     to execute and deliver this  Agreement  and the Ancillary  Agreements  and,
     upon receipt of Buyer Required Governmental  Approvals,  to perform each of
     its  obligations  hereunder and  thereunder.  Buyer has duly authorized the
     execution,  delivery and performance of this Agreement and, as appropriate,
     the Ancillary Agreements. This Agreement is, upon receipt of Buyer Required
     Governmental  Approvals,  and, when executed and  delivered,  the Ancillary
     Agreements  will be, the legal,  valid and binding  obligation of Buyer and
     (assuming the due authorization,  execution and delivery by Seller) is and,
     in the case of the Ancillary Agreements, will be, enforceable against Buyer
     in accordance with their respective terms.

          (b)  Applicability  of HSR Act. Buyer is an agency of the State of New
     York and is not a "corporation  engaged in commerce"  within the meaning of
     the HSR Act as of either the date hereof,  the Exercise Date or the Closing
     Date.

          (c) No Violations or Conflicts.  Neither the execution and delivery of
     this  Agreement  by  Buyer  nor  the   consummation  of  the   transactions
     contemplated  by this  Agreement  on the  Closing  Date  (i)  violates  the
     articles of incorporation or by-laws of Buyer,  (ii) results in a violation
     or breach of, or  constitutes a default or an event of default  under,  any
     bond or other material Contract,  Permit, instrument or other obligation to
     which  Buyer is a party,  or  (iii)  violates  any  Laws,  writ,  judgment,
     injunction or court decree.

          (d)  Consents  and  Approvals.  Except as  otherwise  provided in this
     Agreement,  upon  receipt  of Buyer  Required  Governmental  Approvals,  no
     consent,   approval  or  authorization   of,  or  declaration,   filing  or
     registration  with,  any  Governmental  Authority is required to be made or
     obtained  by  Buyer  in  connection   with  the  execution,   delivery  and
     performance   of  this  Agreement  by  Buyer.   No  consent,   approval  or
     authorization  by, or notice to, any other Person is required to be made or
     obtained  by  Buyer  in  connection   with  the  execution,   delivery  and
     performance of this Agreement by Buyer. On the Closing Date, all notices or
     other  actions  required  to be made or  taken,  if  any,  pursuant  to any
     applicable Laws to permit the closing of the  transactions  contemplated by
     this Agreement will have been made and taken.

          (e) Litigation. There is no claim, suit, litigation,  investigation or
     proceeding pending, or to the Actual Knowledge of Buyer threatened, against
     Buyer in any court, by any Governmental  Authority or before any arbitrator
     or  other  tribunal   relating  to  this  Agreement  or  the   transactions
     contemplated  hereby that would  reasonably  be expected to have a Material
     Adverse  Effect on Buyer's  ability to perform its  obligations  hereunder.
     Buyer is not subject to any  outstanding  action,  order,  writ,  judgment,
     injunction  or decree of any court or  Governmental  Authority  relating to
     this  Agreement  or  the  transactions   contemplated   hereby  that  would
     reasonably be expected to have a Material Adverse Effect on Buyer's ability
     to perform its obligations hereunder.


                                       19



     Section 4.4.  Survival.  The  representations  and warranties of Seller and
Buyer set forth in this Article IV shall  survive for a period of eighteen  (18)
months following the Closing Date except for the  representations and warranties
of the Seller set forth in Section  4.1(g),  which shall survive for a period of
nine (9) months following the Closing Date.

                                    ARTICLE V

                                    COVENANTS

     Section 5.1.  Covenants  of Seller.  After the date hereof and prior to the
Closing Date or earlier termination of this Agreement, Seller agrees as follows,
except as expressly contemplated or permitted in this Agreement or to the extent
Buyer shall otherwise consent in writing:

          (a) Conduct of Business Relating to the Purchased  Assets.  Seller (1)
     shall  operate  the  Purchased  Assets in the  ordinary  course of business
     consistent  with the past  practices  of Seller  and  consistent  with Good
     Utility  Practices,  (2) shall use all Commercially  Reasonable  Efforts to
     preserve  intact such Purchased  Assets,  and use  Commercially  Reasonable
     Efforts to preserve  the  goodwill and  relationships  with its  customers,
     suppliers and others having  business  dealings with it with respect to the
     Purchased Assets,  (3) shall maintain the insurance  coverage  described in
     Article 17 of the Power Supply Agreement, consistent with past practices of
     Seller  and with Good  Utility  Practices,  (4) shall  maintain  all books,
     records,  files,  working  papers,  correspondence,   memoranda  and  other
     documentation  relating  to  the  Purchased  Assets  consistent  with  past
     practices of Seller and with Good Utility  Practices,  and (5) shall comply
     with all  applicable  Laws  relating to the  Purchased  Assets,  including,
     without limitation,  all Environmental Laws, except where the failure to so
     comply  would not be  reasonably  expected to result in a Material  Adverse
     Effect  with  respect  to  the  Purchased  Assets.   Without  limiting  the
     generality  of the  foregoing,  and,  except  as (x)  contemplated  in this
     Agreement,  or (y) required  under  applicable  Law or by any  Governmental
     Authority,  prior to the Closing Date, without the prior written consent of
     Buyer, Seller shall not with respect to the Purchased Assets:

               (i)  Make  any  material  change  in the  levels  of  Inventories
          customarily maintained by Seller with respect to the Purchased Assets,
          other than changes which are consistent with Good Utility Practices;

               (ii) Sell,  lease (as  lessor),  encumber,  pledge,  transfer  or
          otherwise dispose of, any material Purchased Assets individually or in
          the aggregate (except for Purchased Assets used,  consumed or replaced
          in the ordinary  course of business  consistent with past practices of
          Seller  or  with  Good  Utility  Practices)  other  than  to  encumber
          Purchased Assets with Permitted Liens;


                                       20



               (iii)  Modify,  amend  or  voluntarily  terminate  prior  to  the
          expiration  date  any  Contracts  or  Permits   associated  with  such
          Purchased  Assets  in any  material  respect,  other  than  (x) in the
          ordinary  course of business,  to the extent  consistent with the past
          practices of Seller and with Good Utility  Practices,  (y) with cause,
          to  the  extent  consistent  with  past  practices  of  Seller  or its
          Affiliates and with Good Utility Practices,  or (z) as may be required
          in  connection  with  transferring   Seller's  rights  or  obligations
          thereunder to Buyer pursuant to this Agreement;

               (iv) Except as otherwise provided herein, enter into any Contract
          relating to the  Purchased  Assets that  requires  annual  payments by
          Seller  that  exceed  $1,000,000  individually  or  $3,000,000  in the
          aggregate  unless it is  terminable  by Seller (or,  after the Closing
          Date,  by Buyer)  without  penalty or premium  upon no more than sixty
          (60) days notice;

               (v) Operate and maintain the Purchased  Assets  otherwise than in
          accordance   with  the  terms  and  conditions  of  the  Power  Supply
          Agreement,  the Amended and Restated Management Services Agreement, as
          amended by the MSA Amendment, and the Energy Management Agreement; and

               (vi) Except as otherwise provided herein,  enter into any written
          or oral  Contract with respect to any of the  proscribed  transactions
          set forth in the foregoing paragraphs (i) through (v).

          (b) Access to Information.  Seller will, at reasonable  times and upon
     reasonable  notice:  (i)  give  Buyer  and its  representatives  reasonable
     access,  during  normal  business  hours  and upon  reasonable  notice,  to
     Seller's managerial personnel and to all books, records,  plans, equipment,
     offices and other facilities and properties constituting the assets subject
     to the Option in order to permit Buyer to make such reasonable  Inspections
     thereof as Buyer may request;  (ii) furnish  Buyer with such  financial and
     operating data and other  information with respect to the assets subject to
     the Option as Buyer may from time to time  reasonably  request,  and permit
     Buyer to make such  reasonable  Inspections  thereof as Buyer may  request;
     (iii)  furnish  Buyer a copy of each  material  report,  schedule  or other
     document  filed by  Seller or any of its  Affiliates  with  respect  to the
     assets  subject  to  the  Option,   this  Agreement  and  the  transactions
     contemplated hereby with any state or federal court, administrative agency,
     commission or other Governmental Authority,  including, without limitation,
     the SEC, FERC, New York Public Service  Commission or New York  Independent
     System Operator;  and (iv) furnish Buyer with all such other information as
     shall be reasonably necessary to enable Buyer to verify the accuracy of the
     representations  and  warranties  of Seller  contained  in this  Agreement;
     provided,  however,  that (x) any such Inspections and investigations shall
     be conducted in such a manner consistent with Seller's safety  requirements
     and so as not to interfere  unreasonably  with the operation of the subject
     assets,  (y) Seller  shall not be required  to take any action  which would
     constitute a waiver of the attorney-client  privilege,  and (z) Seller need
     not supply  Buyer  with any  information  which  Seller is under a legal or
     contractual obligation not to supply.


                                       21



          (c) Cooperation;  Notification.  Seller shall: (i) confer on a regular
     and frequent  basis with one or more  representatives  of Buyer to discuss,
     subject to applicable  law,  material  operational  matters and the general
     status of its  ongoing  operations  relating  to the assets  subject to the
     Option;  (ii)  promptly  notify  Buyer of any  significant  changes  in its
     business,  properties,  assets,  condition (financial or other), results of
     operations or prospects  relating to the assets subject to the Option;  and
     (iii)  advise Buyer of any change or event  which,  individually  or in the
     aggregate, has had or, insofar as reasonably can be foreseen, is reasonably
     likely to result in a Material  Adverse Effect on the assets subject to the
     Option.

     Section 5.2. Additional Agreements

          (a)  Notification  of Certain  Matters.  Each party  hereto shall give
     prompt notice to the other party of (i) the  occurrence or failure to occur
     of any event,  which  occurrence or failure  would be reasonably  likely to
     cause any  representation  or warranty of such party contained herein to be
     untrue or inaccurate in any material respect at any time, (ii) any material
     failure of such party to comply with or satisfy any covenant,  condition or
     agreement to be complied with or satisfied by it  hereunder,  and (iii) any
     newly discovered fact or circumstance  that might reasonably be expected to
     have a material effect on the accuracy of any representation or warranty of
     such party contained herein.

          (b) Easements.  On the Closing Date,  pursuant to one or more Easement
     Agreements, as appropriate,  Buyer shall grant to Seller and its Affiliates
     irrevocable  and  perpetual  easements  on each of the  sites  and  related
     parcels of each  Generating  Facility  within the  Purchased  Assets to the
     extent necessary for the continued operation and maintenance of, and access
     to, the extent necessary, the Excluded Assets.

          (c) Subdivision.

               (i) The parties  shall  jointly  cooperate  and use  Commercially
          Reasonable Efforts to obtain the requisite  subdivision of the parcels
          of land on which the  Purchased  Assets are located to  subdivide  the
          property  to enable the Seller to own the real  property  on which any
          Excluded Asset is located.

               (ii) If  notwithstanding  the  parties'  Commercially  Reasonable
          Efforts  they are unable to obtain  required  subdivision  approval as
          contemplated  above on or prior to the Closing Date, the parties agree
          that:  (a) Seller shall  transfer to Buyer the real estate  underlying
          the Excluded  Assets,  to the extent such real estate is not among the
          real estate parcels included within the Purchased  Assets,  at no cost
          to Buyer,  and (b) the parties shall negotiate in good faith and enter
          into  with each  other  appropriate  lease,  easement  and/or  license
          agreements  in order to provide each other with adequate and necessary
          rights  (including  rights of ingress and egress) to own,  operate and
          maintain the Purchased Assets and the Excluded Assets, as the case may
          be, such  agreements to contain  customary  terms and  conditions  for
          agreements of this type including, without limitation, indemnification


                                       22



          for acts and omissions and environmental  claims and liabilities,  but
          not to require  any rental or  similar  payments  to be made by either
          party,  except for real  estate  taxes,  insurance  and other  similar
          charges and assessments, and nominal payments, if any, attributable to
          such real estate.

          (d) Emission Credits.

               (i) To the extent  Emission  Credits are not  required to satisfy
          the  compliance  obligations of the Purchased  Assets,  such Emissions
          Credits shall be pooled with those  attributable to Seller's remaining
          generating  stations under the Power Supply Agreement (for the term of
          the Power Supply  Agreement)  and such pooled credits shall be applied
          pro rata to all such  generating  stations  to meet  their  compliance
          obligations under applicable Law, provided that if Buyer exercises the
          Option  with  respect  to both of the  Generating  Facilities,  excess
          Emission Credits from one of the Generating  Facilities shall first be
          applied to the other  Generating  Facility to the extent  necessary to
          meet its compliance obligations under applicable Law. If any Emissions
          Credits  attributable  to the  Purchased  Assets  are sold  after  the
          Closing Date, Buyer shall be entitled to 100% of the net sale proceeds
          therefrom.

               (ii) In the event Buyer sells or transfers  either or both of the
          Generating  Facilities that constitute  Purchased Assets, the Emission
          Credits related to such Generating  Facilities shall remain subject to
          the  provisions  of this  Agreement  with  respect  to the use of such
          Emission Credits for Seller's remaining generating stations, and Buyer
          hereby  covenants to provide  therefor in any  agreement  for any such
          sale or transfer to the satisfaction of Seller.

          (e)  Assessments.  Real estate  Taxes/PILOT  Agreements,  sewer rents,
     water charges,  and other similar  assessments  ("Assessments")  associated
     with the  sites of the  Generating  Facilities  that  constitute  Purchased
     Assets or Assumed  Liabilities  and  assessed  during the fiscal  period in
     which the Closing Date occurs shall be treated in accordance  with terms of
     the Power Supply Agreement.

          (f)  Proprietary  Information.  Between the date of this Agreement and
     the Closing Date, each party shall, and shall use its best efforts to cause
     its representatives  to, (i) keep all Proprietary  Information of the other
     party  confidential  and not to  disclose  or reveal  any such  Proprietary
     Information to any person other than such party's  representatives and (ii)
     not use such  Proprietary  Information  other than in  connection  with the
     consummation of the transactions  contemplated  hereby.  The obligations of
     the parties  under this  Section  5.2(f)  shall be in full force and effect
     (and shall survive the  termination of this  Agreement)  until the later of
     three  (3)  years  from  the  date  hereof,  the  discharge  of  all  other
     obligations  owed by the  parties  to each  other  and the  closing  of the
     transactions contemplated by this Agreement.

          (g)  Post-Closing  Access.  For a period of seven (7) years  after the
     Closing Date (or such longer period as may be required by applicable Law or
     Section 5.2(h)),  each party and its representatives  shall have reasonable


                                       23



     access to all of the books and records  relating to the Purchased Assets to
     the extent  that such  access may  reasonably  be required by such party in
     connection with the Assumed Liabilities[ or the Excluded  Liabilities],  or
     other  matters  relating to or affected by the  operation of the  Purchased
     Assets or the Excluded  Assets.  Such access shall be afforded by the party
     in  possession  of any such books and records  upon  reasonable  notice and
     during normal  business  hours.  The party  exercising this right of access
     shall be solely responsible for any costs or expenses incurred by it or the
     other party with respect to such access pursuant to this Section 5.2(g). If
     the party in  possession  of such books and records shall desire to dispose
     of any books and records upon or prior to the expiration of such seven-year
     period  (or any  such  longer  period),  such  party  shall,  prior to such
     disposition,  give the other party a reasonable  opportunity  at such other
     party's reasonable  expense, to segregate and remove such books and records
     as such other party may select.

          (h) Permitted  Disclosure of Proprietary  Information.  Upon the other
     party's prior written approval (which will not be unreasonably  withheld or
     delayed),  either party may provide  Proprietary  Information  of the other
     party  to  any  Governmental  Authority  with  jurisdiction  or  any  stock
     exchange,  as may be necessary to obtain requisite  Governmental  Authority
     consents or to comply  generally with any relevant law or  regulation.  The
     disclosing  party  will seek  confidential  treatment  for the  Proprietary
     Information provided to any Governmental Authority and the disclosing party
     will  notify the other  party as far in advance  as is  practicable  of its
     intention  to  release  to  any  Governmental   Authority  any  Proprietary
     Information.

          (i) Further Assurances.

               (i) Subject to the terms and conditions of this  Agreement,  each
          of the parties hereto shall use its Commercially Reasonably Efforts to
          take,  or cause to be taken,  all  actions,  and to do, or cause to be
          done, all things necessary,  proper or advisable under applicable laws
          and regulations to consummate and make effective the purchase and sale
          of the Purchased  Assets pursuant to this Agreement and the assumption
          of the Assumed Liabilities,  including,  without limitation, using its
          Commercially   Reasonably  Efforts  to  ensure   satisfaction  of  the
          conditions precedent to each party's obligations hereunder,  including
          obtaining all necessary  consents,  approvals  and  authorizations  of
          third parties and Governmental  Authorities required to be obtained in
          order to consummate the  transactions  contemplated  in this Agreement
          (including  FERC  approval).  Neither  of the  parties  hereto  shall,
          without prior written consent of the other party, take or fail to take
          any  action,   which  might  reasonably  be  expected  to  prevent  or
          materially   impede,   interfere   with  or  delay  the   transactions
          contemplated  by this  Agreement.  From time to time after the Closing
          Date, without further consideration,  Seller will, at Buyer's expense,
          execute and deliver such  documents  to Buyer as Buyer may  reasonably
          request in order to more  effectively  vest in Buyer Seller's title to
          the Purchased Assets subject to Permitted Liens.


                                       24



               (ii) In the event that any  Purchased  Asset  shall not have been
          conveyed  to Buyer on the  Closing  Date,  Seller  shall,  subject  to
          Section  5.2(i)(iii),  use Commercially  Reasonable  Efforts to convey
          such asset to Buyer as  promptly as is  practicable  after the Closing
          Date.

               (iii) To the  extent  that  Seller's  rights  under any  Contract
          relating  to the  Purchased  Assets may not be  assigned  without  the
          consent of another  Person which  consent has not been obtained by the
          Closing  Date,  this  Agreement  shall not  constitute an agreement to
          assign or deliver the same,  if an  attempted  assignment  or delivery
          would  constitute a breach  thereof or be  unlawful.  Seller and Buyer
          agree that if any consent to an assignment or delivery of any material
          such  Contract  shall not be obtained or if any  attempted  assignment
          would be ineffective  or would impair  Buyer's rights and  obligations
          under the material  Contract in  question,  so that Buyer would not in
          effect acquire the benefit of all such rights and obligations, Seller,
          at Buyer's option and to the maximum extent  permitted by law and such
          material Contract,  shall, after the Closing Date, appoint Buyer to be
          Seller's  agent with  respect to such  material  Contract,  or, to the
          maximum extent permitted by law and such material Contract, enter into
          such reasonable  arrangements with Buyer or take such other actions as
          are necessary to provide Buyer with the same or substantially  similar
          rights  and  obligations  of  such  material  Contract  as  Buyer  may
          reasonably  request;  provided that Buyer shall assume all of Seller's
          obligations  under such  Contract  and  indemnify  Seller  against any
          claims with  respect to such  Contract  and such  arrangement  arising
          after the Closing  Date.  Seller and Buyer shall  cooperate  and shall
          each  use  Commercially  Reasonable  Efforts  prior to and  after  the
          Closing  Date to obtain an  assignment  of such  material  Contract to
          Buyer.

               (iv) To the extent that  Seller's  rights  under any  warranty or
          guaranty constituting part of the Purchased Assets may not be assigned
          without  the  consent of another  Person,  which  consent has not been
          obtained by the Closing Date,  this Agreement  shall not constitute an
          agreement to assign same, if an attempted  assignment would constitute
          a breach thereof,  or be unlawful.  Seller and Buyer agree that if any
          consent to an assignment of any such warranty or guaranty shall not be
          obtained, or if any attempted assignment would be ineffective or would
          impair Buyer's rights and  obligations  under the warranty or guaranty
          in question,  so that Buyer would not in effect acquire the benefit of
          all such rights and obligations, Seller, at Buyer's expense, shall use
          Commercially  Reasonable  Efforts,  to the extent permitted by law and
          such  warranty or guaranty,  to enforce such  warranty or guaranty for
          the  benefit of Buyer so as to  provide  Buyer to the  maximum  extent
          possible  with  the  benefits  and  obligations  of such  warranty  or
          guaranty.


                                       25



                                   ARTICLE VI

                               CLOSING CONDITIONS

     Section  6.1.  Closing  Conditions.  The  obligations  of  the  parties  to
consummate  the sale and  purchase  of the  Purchased  Assets is  subject to the
satisfaction of the following conditions,  provided,  however, that the party or
parties  to whose  benefit  a  condition  runs may  waive  compliance  with such
condition:

          (a) No  Injunctions,  etc. No preliminary  or permanent  injunction or
     other  order  or  decree  by any  federal  or state  court or  Governmental
     Authority  which prevents the  consummation of the sale and purchase of the
     Purchased Assets  contemplated  herein shall have been issued and remain in
     effect (each party agreeing to use its Commercially  Reasonable  Efforts to
     have any such injunction,  order or decree lifted) and no statute,  rule or
     regulation  shall have been enacted by any state or federal  government  or
     Governmental  Authority  which  prohibits the  consummation of the sale and
     purchase of the Purchased Assets.

          (b) Consents.  All Governmental  Authority  consents and approvals and
     Permits  required to  consummate  the sale and  purchase  of the  Purchased
     Assets  shall  have been  obtained  (and  copies of which  shall  have been
     provided to the other  party) and be in full force and  effect,  including,
     without  limitation,  the  approval  of the PACB  and FERC and  subdivision
     approvals  under  Section  5.2(c),  reasonably  satisfactory  to Seller and
     Buyer. All consents and approvals of third persons shall have been obtained
     (and copies of which shall have been provided to the other party) and shall
     be in full  force and  effect,  except to the  extent  that the  failure to
     obtain such a consent or approval would not be reasonably  expected to have
     a Material Adverse Effect with respect to the Purchased Assets.

          (c)  Representations  and Warranties.  Each of the representations and
     warranties  set forth in Article  IV that is  qualified  as to  materiality
     shall be true and correct,  and each of such representations and warranties
     that  is not so  qualified  shall  be  true  and  correct  in all  material
     respects,  on  and  as of the  Closing  Date  except  to  the  extent  such
     representations  and  warranties  are stated to be effective  only as of an
     earlier date, in which case such  representations  and warranties  shall be
     true  and  correct  or  true  and  correct  in all  material  respects,  as
     applicable, as of such earlier date.

          (d) Compliance with  Agreements.  The parties shall have complied with
     or performed in all material  respects all of their  respective  agreements
     and covenants in this Agreement to be complied with or performed by them at
     or prior to the Closing Date.

          (e) Ancillary Agreements.  Each of the Ancillary Agreements shall have
     been executed and be in full force and effect.

          (f) No Material  Adverse  Effect.  There shall be no Material  Adverse
     Effect with respect to the Purchased Assets since the Exercise Date.


                                       26



          (g)  Contracts.  To the extent  available,  originals of all Contracts
     relating to the Purchased  Assets and, if not  available,  true and correct
     copies thereof, shall have been provided to Buyer.

          (h) Seller  Opinion of Counsel.  Buyer shall have  received an opinion
     from Seller's  counsel (who may be in-house  counsel to Seller)  reasonably
     acceptable to Buyer, dated the Closing Date and reasonably  satisfactory in
     form and  substance to Buyer and its counsel,  substantially  to the effect
     that:

               (i) Seller is a limited  liability  company duly formed,  validly
          existing and in good standing  under the laws of State of New York and
          has the power and  authority  to own,  lease and operate its  material
          assets  and  properties  and  to  carry  on  its  Business  as is  now
          conducted,  and  to  execute  and  deliver  this  Agreement  and  each
          Ancillary Agreement and to consummate the transactions contemplated by
          it  hereby  and  thereby;  and  the  execution  and  delivery  of this
          Agreement and the Ancillary  Agreements by Seller and the consummation
          of the transactions contemplated hereby and thereby have been duly and
          validly  authorized  by all necessary  action  required on the part of
          Seller;

               (ii) This Agreement and each  Ancillary  Agreement have been duly
          and validly  executed and  delivered by Seller and  constitute  legal,
          valid and binding agreements of Seller  enforceable  against Seller in
          accordance   with   their   respective   terms,   except   that   such
          enforceability may be limited, by applicable  bankruptcy,  insolvency,
          fraudulent  conveyance,  reorganization,  moratorium  or other similar
          laws  affecting  or  relating  to  enforcement  of  creditors'  rights
          generally  and general  principles  of equity  (regardless  of whether
          enforcement is considered in a proceeding at law or in equity);

               (iii) The execution,  delivery and  performance of this Agreement
          and each  Ancillary  Agreement by Seller do not (A) conflict  with the
          articles of  organization,  operating  agreement or other  constituent
          instruments  of  Seller  or (B)  to the  knowledge  of  such  counsel,
          constitute  a  violation  of or  default  under  those  agreements  or
          instruments which are material to the business or financial  condition
          of Seller of which such counsel is aware; and

               (iv) No consent or approval of,  filing  with,  or notice to, any
          Governmental  Authority is necessary for the execution and delivery of
          this  Agreement  and  the  Ancillary   Agreements  by  Seller  or  the
          consummation  by Seller of the  transactions  contemplated  hereby and
          thereby, other than such consents, approvals filings or notices which,
          if not obtained or made,  will not prevent Seller from  performing its
          material obligations hereunder and thereunder.

          (i) Buyer  Opinion of Counsel.  Seller shall have  received an opinion
     from  Buyer's  counsel  (who may be in-house  counsel to Buyer)  reasonably
     acceptable to Seller, dated the Closing Date and reasonably satisfactory in
     form and substance to Seller and its counsel,  substantially  to the effect
     that:


                                       27



               (i) Buyer is a corporation,  duly organized, validly existing and
          in good  standing  under the laws of the State of New York and has the
          corporate  power and authority to own,  lease and operate its material
          assets  and  properties  and  to  carry  on  its  business  as is  now
          conducted,  and  to  execute  and  deliver  this  Agreement  and  each
          Ancillary Agreement and to consummate the transactions contemplated by
          it  hereby  and  thereby;  and  the  execution  and  delivery  of this
          Agreement and the Ancillary  Agreements by Buyer and the  consummation
          of the  transactions  contemplated  hereby and thereby  have been duly
          authorized by all necessary  corporate  action required on the part of
          Buyer;

               (ii) This Agreement and the Ancillary  Agreements  have been duly
          and validly  executed  and  delivered  by Buyer,  as  applicable,  and
          constitute legal, valid and binding  agreements of Buyer,  enforceable
          against Buyer in accordance with their respective  terms,  except that
          such   enforceability   may  be  limited  by  applicable   bankruptcy,
          insolvency, fraudulent conveyance, reorganization, moratorium or other
          similar laws affecting or relating to enforcement of creditors' rights
          generally  and general  principles  of equity  (regardless  of whether
          enforcement is considered in a proceeding at law or in equity);

               (iii) The execution,  delivery and  performance of this Agreement
          and each  Ancillary  Agreement by Buyer do not (A)  conflict  with the
          articles of  incorporation or by-laws of Buyer or (B) to the knowledge
          of such  counsel,  constitute  a violation  of or default  under those
          agreements  or  instruments  which are  material  to the  business  or
          financial condition of Buyer of which such counsel is aware; and

               (iv) No consent or approval of,  filing  with,  or notice to, any
          Governmental  Authority is necessary for the execution and delivery of
          this   Agreement  and  the  Ancillary   Agreements  by  Buyer  or  the
          consummation  by Buyer of the  transactions  contemplated  hereby  and
          thereby,  other  than such  consents,  approvals,  filings  or notices
          which, if not obtained or made, will not prevent Buyer from performing
          its material obligations hereunder or thereunder.

          (j)  Officers'  Certificates.  Each party shall have  delivered to the
     other party (i) a  certificate,  executed by an  executive  officer of such
     party,  dated the Closing Date, to the effect that the conditions set forth
     in Sections  6.1(c) and (d) have been satisfied with respect to such party,
     and (ii) a  certificate,  executed by an  executive  officer of such party,
     dated the Closing Date,  certifying  the incumbency of each officer of such
     party executing  instruments,  agreements and  certificates  required to be
     delivered to the other party hereunder.

          (k) Good Standing Certificates. Each party shall have delivered to the
     other party a copy of the articles of organization or other  organizational
     documents of such party certified by the Secretary of State of New York, in
     each case, dated within ten days of the Closing Date.


                                       28



          (l) Transfer Tax Returns. The parties shall have executed all New York
     State real property transfer tax returns required by law.

          (m) FIRPTA.  Seller shall have delivered an appropriate  certification
     and affidavit  with respect to the Foreign  Investment in Real Property Tax
     Act.

          (n) Other Instruments of Transfer.  Buyer shall have received all such
     other  instruments of assignment,  transfer or conveyance as shall,  in the
     reasonable  opinion of Buyer and its  counsel,  be necessary to transfer to
     Buyer the  Purchased  Assets in  accordance  with this  Agreement and where
     necessary in recordable form.

          (o) Other  Instruments.  Each  party  shall have  received  such other
     agreements,  documents,  instruments  and  writings  as are  required to be
     delivered  by the other party at or prior to the Closing  Date  pursuant to
     this Agreement or otherwise reasonably required in connection herewith.

     Section 6.2.  Other  Agreements.  The parties  agree that the Operation and
Maintenance  Agreement,  the Power  Supply  Agreement  Amendment  and the Energy
Management  Agreement Amendment shall be executed by the parties within five (5)
days  following the Exercise  Date;  provided that such agreement and amendments
shall  not  become  effective  until,  among  other  things as set forth in such
agreement and amendments, (i) all required Permits are obtained (and the parties
hereby agree to begin the process of seeking  such Permits  within ten (10) days
after the  Effective  Date)  and (ii) the  conditions  set  forth  above in this
Article VI have been satisfied. The parties acknowledge and agree that the Power
Supply Agreement and the Energy Management  Agreement shall remain in full force
and effect with respect to the Generating  Facilities until the Closing Date and
otherwise in accordance with their  respective  terms if Buyer does not exercise
the Option.

                                  ARTICLE VII

                               GENERAL PROVISIONS

     Section 7.1. Notices.  All notices and other  communications  given or made
pursuant to this Agreement  shall be in writing and shall be deemed to have been
duly given or made if (i) sent by registered or certified  mail,  return receipt
requested,  or (ii) hand delivered,  or (iii) sent by prepaid overnight carrier,
with a record of receipt,  to the parties at the following addresses (or at such
other addresses as shall be specified by the parties by like notice):

         (a) if to Buyer:      Long Island Power Authority
                               333 Earle Ovington Blvd, Suite 403
                               Uniondale, NY 11553
                               Attn: General Counsel

         and to:               Thelen, Reid Brown Raysman & Steiner LLP
                               875 Third Avenue
                               New York, NY 10022
                               Attn: Douglas E. Davidson


                                       29



         (b)                  if to Seller: KeySpan
                              Generation LLC c/o
                              KeySpan Corporation One
                              Metrotech Center
                              Brooklyn, New York 11201
                              Attn: John J. Bishar, Jr.

         with copies to:      National Grid
                              25 Research Drive
                              Westborough, MA 01582
                              Attn: Lawrence J. Reilly

Each  notice or  communication  shall be  deemed to have been  given on the date
received.

     Section 7.2.  Headings.  The headings  contained in this  Agreement are for
reference  purposes  only  and  shall  not  affect  in any  way the  meaning  or
interpretation of this Agreement.

     Section 7.3. Miscellaneous.  This Agreement, together with the Exhibits and
Schedules annexed hereto:  (i) constitute the entire agreement and supersede all
other prior  agreements  and  understandings,  both written and oral,  among the
parties,  or any of them, with respect to the subject matter hereof and thereof;
(ii) shall be binding  upon and inure to the benefit of the  parties  hereto and
thereto  and their  respective  successors  and  permitted  assigns  and are not
intended to confer upon any other  Person,  any rights or remedies  hereunder or
thereunder; and (iii) may be executed in two or more counterparts which together
shall constitute a single agreement.

     Section  7.4.  Governing  Law.  This  Agreement  shall be  governed  by and
construed in accordance  with the law of the State of New York  (without  giving
effect to conflict  of law  principles)  as to all  matters,  including  but not
limited to matters of validity, construction,  effect, performance and remedies.
THE  PARTIES  HERETO  AGREE THAT VENUE IN ANY AND ALL  ACTIONS  AND  PROCEEDINGS
RELATED TO THE SUBJECT MATTER OF THIS AGREEMENT  SHALL BE IN THE STATE COURTS IN
AND FOR NASSAU  COUNTY,  NEW YORK OR THE  FEDERAL  COURTS IN AND FOR THE EASTERN
DISTRICT OF NEW YORK,  WHICH COURTS SHALL HAVE EXCLUSIVE  JURISDICTION  FOR SUCH
PURPOSE, AND THE PARTIES HERETO IRREVOCABLY SUBMIT TO THE EXCLUSIVE JURISDICTION
OF SUCH COURTS AND IRREVOCABLY WAIVE THE DEFENSE OF AN INCONVENIENT FORUM TO THE
MAINTENANCE OF ANY SUCH ACTION OR PROCEEDING.  SERVICE OF PROCESS MAY BE MADE IN
ANY MANNER  RECOGNIZED BY SUCH COURTS.  EACH OF THE PARTIES  HERETO  IRREVOCABLY
WAIVES ITS RIGHT TO A JURY TRIAL WITH RESPECT TO ANY ACTION OR CLAIM ARISING OUT
OF  ANY  DISPUTE  IN  CONNECTION   WITH  THIS  AGREEMENT  OR  THE   TRANSACTIONS
CONTEMPLATED HEREBY.


                                       30



     Section  7.5.  Assignment.  Neither this  Agreement  nor any of the rights,
interests or  obligations  hereunder  shall be assigned by either of the parties
hereto without the prior written  consent of the other party.  No party shall be
relieved  of any  liability  arising  hereunder  in  respect  of any  assignment
pursuant to this Section,  unless such  assignor has received a written  release
expressly excepting such assignor from any liability that may arise hereunder.

     Section 7.6. Schedules.  Any information set forth on any Schedules annexed
hereto shall, to the extent  applicable,  be deemed to be included on each other
appropriate Schedule annexed to this Agreement.

     Section 7.7. Waiver;  Amendment. No waiver by any party hereto of any term,
condition or obligation of this  Agreement  shall be valid unless in writing and
signed by the waiving  party.  No failure or delay by either party hereto at any
time to require the other party hereto to perform  strictly in  accordance  with
the terms hereof shall  preclude such party from  requiring  performance by such
other  party  hereto at any later  time.  No waiver of any one or several of the
terms,  conditions  or  obligations  of this  Agreement,  and no partial  waiver
thereof, shall be construed as a waiver of any of the other terms, conditions or
obligations of this  Agreement.  This  Agreement may not be amended,  changed or
modified  in any  fashion  except by  written  instrument  signed by each of the
parties hereto.

     Section 7.8. Indemnification.

          (a)  Indemnification  Provisions  for Buyer's  Benefit.  Seller  shall
     indemnify Buyer, its Affiliates and their respective  trustees,  directors,
     officers and employees ("Buyer  Indemnified  Parties") from and against any
     and all Adverse  Consequences that Buyer  Indemnified  Parties may incur or
     suffer (each, an "Indemnifiable Loss") as a result of (i) any inaccuracy or
     breach of a  representation  or warranty made by Seller in this  Agreement,
     provided  that  Buyer  makes a written  claim for  indemnification  against
     Seller  pursuant  to Section  7.1 within the  survival  period set forth in
     Section 4.4;  (ii) the breach of, or default in the  performance  by Seller
     of,  any  covenant,  agreement  or  obligation  to be  performed  by Seller
     pursuant to this Agreement;  and (iii) the Excluded  Liabilities  provided,
     however  that (a)  Seller  shall  have no  obligation  to  indemnify  Buyer
     Indemnified  Parties from and against any Indemnifiable  Losses until Buyer
     Indemnified  Parties have  suffered  Indemnifiable  Losses in excess of the
     Threshold  (in which  event  Buyer  Indemnified  Parties  may  recover  all
     Indemnifiable  Losses  in  excess of the  Threshold),  and (b) the  maximum
     liability of Seller for  Indemnifiable  Losses  under this  Section  7.8(a)
     shall not  exceed the Cap.  The  limitations  on  Seller's  obligations  to
     indemnify  set  forth in this  Section  7.8(a)  shall  not apply to (x) any
     willful  breach of any covenant  which survives the Closing Date under this
     Agreement,  (y) any Indemnifiable Losses arising from Seller's fraud or (z)
     the Excluded Liabilities.

          (b)  Indemnification  Provisions  for  Seller's  Benefit.  Buyer shall
     indemnify Seller, its Affiliates and their respective  directors,  officers
     and employees ("Seller  Indemnified  Parties") from and against any and all
     Indemnifiable Losses that Seller Indemnified Parties may incur or suffer as
     a result of (i) any  inaccuracy or breach of a  representation  or warranty


                                       31



     made by Buyer in this Agreement, provided that Seller makes a written claim
     for  indemnification  against  Buyer  pursuant  to  Section  7.1 within the
     survival period set forth in Section 4.4; (ii) the breach of, or default in
     the  performance  by Buyer of, any covenant,  agreement or obligation to be
     performed by the Buyer  pursuant to this  Agreement;  and (iii) the Assumed
     Liabilities;  provided,  however that (a) Buyer shall have no obligation to
     indemnify  Seller  Indemnified  Parties from and against any  Indemnifiable
     Losses until Seller Indemnified Parties have suffered  Indemnifiable Losses
     in excess of the Threshold (in which event Seller  Indemnified  Parties may
     recover all Indemnifiable  Losses in excess of the Threshold),  and (b) the
     maximum  liability  of Buyer for  Indemnifiable  Losses  under this Section
     7.8(b) shall not exceed the Cap. The limitations on Buyer's  obligations to
     indemnify  set  forth in this  Section  7.8(b)  shall  not apply to (x) any
     willful  breach of any covenant  which survives the Closing Date under this
     Agreement,  (y) any Indemnifiable  Losses arising from Buyer's fraud or (z)
     the Assumed Liabilities.

     (c) Defense of Claims.

          (i) If any  Person  entitled  to  receive  indemnification  under this
     Agreement (an  "Indemnitee")  receives notice of the assertion of any claim
     or of the commencement of any claim,  action, or proceeding made or brought
     by any Person who is not a party to this  Agreement  or an  Affiliate  of a
     party to this  Agreement  (a "Third  Party  Claim")  with  respect to which
     indemnification  is  to  be  sought  from  a  Person  required  to  provide
     indemnification  under  this  Agreement  (an  "Indemnifying   Party"),  the
     Indemnitee shall give such  Indemnifying  Party  reasonably  prompt written
     notice thereof,  but in any event such notice shall not be given later than
     ten (10) days after the Indemnitee's  receipt of notice of such Third Party
     Claim.  Such notice  shall  describe the nature of the Third Party Claim in
     reasonable  detail and shall indicate the estimated amount, if practicable,
     of the  Indemnifiable  Loss  that  has  been  or may  be  sustained  by the
     Indemnitee.  The  Indemnifying  Party will have the right to participate in
     or, by giving  written  notice to the  Indemnitee,  to elect to assume  the
     defense of any Third Party Claim at such  Indemnifying  Party's expense and
     by such Indemnifying Party's own counsel, provided that the counsel for the
     Indemnifying  Party who shall conduct the defense of such Third Party Claim
     shall be reasonably  satisfactory to the Indemnitee.  The Indemnitee  shall
     cooperate in good faith in such defense.  If an  Indemnifying  Party elects
     not to assume the defense of any Third Party Claim,  the Indemnitee may not
     compromise  or settle  such Third Party  Claim  without  the prior  written
     consent of the Indemnifying  Party, which consent shall not be unreasonably
     withheld.

          (ii) If,  within ten (10) days after an  Indemnitee  provides  written
     notice to the  Indemnifying  Party of any Third Party Claim, the Indemnitee
     receives written notice from the Indemnifying  Party that such Indemnifying
     Party has  elected to assume  the  defense  of such  Third  Party  Claim as
     provided in Section  7.8(c)(i),  the Indemnifying  Party will not be liable


                                       32



     for  any  legal  expenses   subsequently  incurred  by  the  Indemnitee  in
     connection  with  the  defense  thereof;  provided,  however,  that  if the
     Indemnifying  Party shall fail to take reasonable steps necessary to defend
     or settle  diligently  such Third Party Claim within twenty (20) days after
     receiving  notice from the  Indemnitee  that the  Indemnitee  believes  the
     Indemnifying Party has failed to take such steps, the Indemnitee may assume
     its  own  defense  and the  Indemnifying  Party  shall  be  liable  for all
     reasonable  expenses  thereof  for which the  Indemnifying  Party is liable
     pursuant to Section 7.8(a) or (b), as applicable.

          (iii)  Without  the  prior  written  consent  of the  Indemnitee,  the
     Indemnifying  Party shall not enter into any  settlement of any Third Party
     Claim  which  would  lead to  liability  or create any  financial  or other
     obligation on the part of the  Indemnitee  for which the  Indemnitee is not
     entitled to indemnification  hereunder. If a firm offer is made to settle a
     Third  Party  Claim  without  leading to  liability  or the  creation  of a
     financial or other  obligation on the part of the  Indemnitee for which the
     Indemnitee   is  not  entitled  to   indemnification   hereunder   and  the
     Indemnifying  Party  desires  to  accept  and  agree  to  such  offer,  the
     Indemnifying  Party shall give  written  notice to the  Indemnitee  to that
     effect.  If the  Indemnitee  fails to consent to such firm offer within ten
     (10) days after its receipt of such notice, the Indemnifying Party shall be
     relieved  of its  obligations  to defend  such  Third  Party  Claim and the
     Indemnitee may contest or defend such Third Party Claim. In such event, the
     maximum  liability of the  Indemnifying  Party as to such Third Party Claim
     will be the  amount of such  settlement  offer  plus  reasonable  costs and
     expenses paid or incurred by Indemnitee up to the date of said notice.  The
     Indemnitee  will have the right to reject any  settlement  approved  by the
     Indemnifying  Party if the  Indemnitee  is not  fully  and  unconditionally
     released from any liability resulting from that claim or is required to pay
     any costs,  expenses or damages to any person as a result of the claim that
     are not covered by the indemnity provided herein.

          (iv) Any claim by an  Indemnitee on account of an  Indemnifiable  Loss
     which does not result from a Third Party Claim (a "Direct  Claim") shall be
     asserted by giving the Indemnifying  Party reasonably prompt written notice
     thereof,  stating  the  nature  of such  claim  in  reasonable  detail  and
     indicating  the estimated  amount,  if  practicable,  but in any event such
     notice  shall not be given  later than ten (10) days  after the  Indemnitee
     becomes aware of such Direct Claim, and the Indemnifying Party shall have a
     period of thirty (30) days within which to respond to such Direct Claim. If
     the  Indemnifying  Party does not respond  within such 30-day  period,  the
     Indemnifying  Party shall be deemed to have  accepted  such  claim.  If the
     Indemnifying  Party rejects such claim, the Indemnitee will be free to seek
     enforcement of its right to indemnification under this Agreement (if any).


                                       33



          (v) If the amount of any Indemnifiable Loss, at any time subsequent to
     the  making of an  indemnity  payment  in  respect  thereof,  is reduced by
     recovery,  settlement  or  otherwise  under or  pursuant  to any  insurance
     coverage,  or pursuant to any claim,  recovery,  settlement  or payment by,
     from or against any other entity,  the amount of such  reduction,  less any
     costs, expenses or premiums incurred in connection therewith (together with
     interest  thereon from the date of payment thereof at the Prime Rate) shall
     promptly be repaid by the Indemnitee to the Indemnifying Party.

          (vi) A failure  to give  timely  notice as  provided  in this  Section
     7.8(c) shall not affect the rights or  obligations  of any party  hereunder
     except if, and only to the extent that,  as a result of such  failure,  the
     party which was entitled to receive such notice was actually  prejudiced as
     a result of such failure.

          (d) The parties agree that any  indemnification  payment made pursuant
     to this Agreement shall be treated for Tax purposes as an adjustment to the
     Purchase Price, unless otherwise required by applicable law.

          (e)  Notwithstanding  anything to the contrary  contained herein,  the
     indemnification  provided for herein shall not cover, and in no event shall
     any party hereto be liable for, any  indirect,  consequential,  incidental,
     exemplary,  special damages or punitive damages or damages for lost profits
     (except,  in each case, to the extent  necessary to reimburse an Indemnitee
     for judgments actually awarded to third parties in respect of such types of
     damages).

          (f) After the Closing  Date,  other than as  provided in Section  3.2,
     this Section 7.8 will  constitute the parties  exclusive  remedy for any of
     the matters  addressed  herein or other claim arising out of or relating to
     this Agreement.

     Section 7.9. Issue Taxes.  Buyer alone shall bear all  documentary,  stamp,
transfer,  and  similar  taxes  levied  under the laws of the  United  States of
America or any State or local taxing authority  thereof or therein in connection
with the sale of the Purchased Assets.

     Section 7.10. Fees and Expenses. Except as expressly set forth herein, each
party shall bear its own costs and  expenses  (including  those of such  party's
legal,   financial  and  other   advisors)   incurred  in  connection  with  the
transactions contemplated by this Agreement.

     Section 7.11.  Effective  Date. This Agreement shall become legally binding
and  effective  only  upon  satisfaction  of  each of the  following  conditions
precedent (the date upon which all such conditions are satisfied, the "Effective
Date"):

          (a) Approvals reasonably satisfactory to Buyer and Seller from the New
     York State Comptroller and the New York State Attorney General (as to form)
     of this Agreement and each of the other National Grid Agreements shall have
     been obtained and be in full force and effect;

          (b) Each of the 2006 Agreements shall have become  effective  pursuant
     to their respective terms and be in full force and effect; and


                                       34



          (c) The Merger shall have been consummated.

     Section  7.12.  Termination.  This  Agreement may be terminated as provided
below:

          (a) by mutual consent;

          (b) by either party,  by not less than three (3) Business Days' notice
     to the  other  party,  if (i) any  federal  or  state  court  of  competent
     jurisdiction  shall have issued an order,  judgment  or decree  permanently
     restraining,  enjoining or  otherwise  prohibiting  the  closing,  and such
     order,  judgment or decree shall have become final and  nonappeallable;  or
     (ii) any  statute,  rule,  order or  regulation  shall have been enacted or
     issued  by  any  Governmental  Authority  which,  directly  or  indirectly,
     prohibits the consummation of the closing;

          (c) by either party,  by not less than three (3) Business Days' notice
     to the other party, if any required  third-party or Governmental  Authority
     consents, approvals and Permits, the receipt of which is a condition to the
     obligation  to  consummate  the sale and purchase of the  Purchased  Assets
     under  Article VI,  shall have been  denied or shall have been  granted but
     contains terms or conditions  which are not reasonably  satisfactory to the
     designated party or parties under Article VI; provided that the terminating
     party has used  Commercially  Reasonable  Efforts to obtain such  consents,
     approvals and Permits;

          (d) by the  non-breaching  party,  by not less than three (3) Business
     Days' notice to the other party,  in the event of the other party's  breach
     or default in the  performance  by the other  party of any  representation,
     warranty, covenant or agreement of such other party hereunder, which breach
     or  default  (i) would,  individually  or in the  aggregate  with all other
     uncured breaches and defaults of such other party,  constitute  grounds for
     the  conditions  set forth in Article VI not to be satisfied at the Closing
     Date and (ii) has not been,  or cannot be,  cured  within  thirty (30) days
     after  written  notice,  describing  such  breach or default in  reasonable
     detail,  is given by the  terminating  party to the breaching or defaulting
     party;

          (e) by either  party in  accordance  with the  provisions  of  Section
     2.12(b); or

          (f) by either party,  in the event of a failure of the Closing Date to
     occur on or prior to the date that is nine (9)  months  after the  Exercise
     Date, provided, that if the sole closing condition that has not been met at
     the  expiration of such  nine-month  period is the failure to have obtained
     any one or more third-party or Governmental  Authority  approval(s) despite
     such party's Commercially  Reasonable Efforts,  then such nine-month period
     shall be  extended  for up to an  additional  three  months to obtain  such
     third-party or Governmental  Authority  approval(s),  so long as such party
     shall continue to diligently pursue obtaining such approval(s)  during such
     extended period.


                                       35




          IN WITNESS WHEREOF, each party hereto has duly executed this Agreement
     as of the date first above written.

                                            KEYSPAN GENERATION LLC,
                                            as Seller



                                            By: /s/John J. Bishar Jr.
                                                ---------------------
                                                Name:  John J. Bishar Jr.
                                                Title: Executive Vice President











                                       36








                              LONG ISLAND LIGHTING COMPANY d/b/a LIPA,
                              as Buyer



                                  By: /s/Richard M. Kessel
                                      --------------------
                                      Name:  Richard M. Kessel
                                      Title: CEO & President














                                       37




                                   Schedule I
                                   ----------

                                Additional Assets
                                -----------------

1.   All furniture,  office supplies,  tools and other equipment  located at the
     Generating   Facilities,   other  than  facilities,   tools  and  equipment
     identified as Excluded Assets.

2.   All  telecommunications  facilities  located at the  Generating  Facilities
     relating primarily to the operation of the Generating Facilities.

3.   All agreements and purchase  orders  relating to the Related Assets held by
     Seller as of the Closing Date.

4.   All motor  vehicles  owned,  purchased  or  leased by Seller  that are used
     primarily in connection with the Generating Facilities.

5.   All  franchises,  permits and other  governmental  authorizations  relating
     primarily to the Generating Facilities.

6.   The Wading River Plant spare parts.








                                      I-1





                                   Schedule II
                                   -----------

                                 Excluded Assets
                                 ---------------

1.   For the Wading  River Plant,  the C3  Warehouse  (as depicted on the survey
     attached as Schedule IV).

2.   All materials,  inventory, tools, supplies, property rights, agreements and
     purchase orders,  at the Generating  Facilities that are not held primarily
     in  connection  with the  Generating  Facilities,  excluding all such items
     owned by the Buyer as of the Closing Date.

3.   All motor vehicles  owned,  purchased or leased by Seller that are not used
     primarily in connection with the Generating Facilities.

4.   All patents, copyrights,  trade secrets, proprietary information,  licensed
     software,  manuals  and  other  intellectual  property  that  are not  held
     primarily in  connection  with the  Generating  Facilities,  excluding  all
     intellectual property owned by Buyer as of the Closing Date.

5.   All  franchises,  permits and other  governmental  authorizations  relating
     primarily to any Excluded Asset.






                                      II-1





                                  Schedule III
                                  ------------

                    Description and Survey of Shoreham Plant
                    ----------------------------------------











                                     III-1




                                   Schedule IV
                                   -----------

                  Description and Survey of Wading River Plant
                  --------------------------------------------

















                                      IV-1






                                   Schedule V
                                   ----------

                               Disclosure Schedule
                               -------------------

A.   Consents and Approvals
     ----------------------

                   Both Shoreham Plant and Wading River Plant

1.   Approval of the FERC  pursuant to Section 203 of the Federal  Power Act for
     the transfer of the Purchased Assets.

2.   Subdivision approvals as contemplated under Section 5.2(c).

3.   Consents from  third-parties as may be required for the transfer of leases,
     easements and other Contracts that are part of the Purchased Assets.

4.   Filings with and consents, approvals and other actions by the NYSDEC as may
     be required  for the  transfer of the New York State Title IV Acid Rain and
     Title V Air permits and the designation thereunder of Buyer as the owner of
     the Generating Facilities.

5.   Filings with and consents,  approvals and other actions of NYSDEC as may be
     required  for the transfer of the  Memorandum  of  Understanding  Regarding
     Voluntarily  Restricting  SO2 Allowance  Sales to Certain Upwind States and
     the  designation  thereunder  of  Buyer  as the  owner  of  the  Generating
     Facilities.

6.   Filings with and consents, approvals and other actions by the NYSDEC as may
     be  required  for the  issuance  by the  NYSDEC of New York  Chemical  Bulk
     Storage permits in the name of Buyer.

7.   Filings with and consents, approvals and other actions by the NYSDEC as may
     be required for the transfer of the State Pollutant  Discharge  Elimination
     System  ("SPDES")  permits and the  designation  thereunder of Buyer as the
     owner of the Generating Facilities.

8.   Filings with and consents, approvals and other actions by the NYSDEC as may
     be  required  for the  issuance by the NYSDEC of Major  Petroleum  Facility
     licenses in the name of Buyer.

9.   Filings with and  consents,  approvals and other actions as may be required
     for the transfer of the Suffolk County Article XII Fuel Storage permits and
     the  designation  thereunder  of  Buyer  as the  owner  of  the  Generating
     Facilities.


                                      V-1





B.   Environmental
     -------------

                                 Shoreham Plant


1.   The Shoreham  Plant is not capable of meeting  existing  required daily NOx
     Reasonably  Achievable Control Technology ("RACT") emission  limitations on
     an  individual  unit  basis.   Compliance   currently  relies  on  a  daily
     system-wide  NOx averaging  program in which  compliance  shortfall at such
     units is  compensated  for by an excess margin of compliance at other Genco
     units as provided for in the Seller's  NYSDEC  approved NOx RACT compliance
     plan. Consequently,  future compliant operation of the Shoreham Plant under
     ownership by Buyer or subsequent acquirer under existing NOx RACT emissions
     limits  is  subject  to  approval  by the  NYSDEC  (and  possibly  the U.S.
     Environmental  Protection Agency  ("USEPA")) to continued  inclusion of the
     Purchased  Assets  within  the  Seller's  NOx  RACT  system-wide  averaging
     compliance  plan  or,  alternatively,   the  implementation  of  other  NOx
     reduction measures on the Purchased Assets.

2.   Spill of 550 gallons of No. 2 fuel oil during  replacement  of a 550 gallon
     underground  storage  tank. A corrective  action plan is being  implemented
     under a Stipulation  Agreement  between the NYSDEC and Seller. A soil vapor
     extraction  system was  installed in July 2005 and is  currently  operating
     (NYSDEC Spill 03-06681).

3.   Underground pipe failed resulting in the release of 5 gallons of product to
     surrounding soil (NYSDEC Spill 02-06045).

                               Wading River Plant

None.


                   Both Shoreham Plant and Wading River Plant

1.   The Shoreham Plant and Wading River Plant contain thermal system components
     and other  systems that utilize  insulation or other  materials  containing
     asbestos fibers  (including,  but not limited to, boiler  insulation,  pipe
     insulation and coverings,  duct  insulation and coverings and other thermal
     system  insulations),  and such  circumstances  could  form the basis of an
     Environmental  Claim.  The extent of this asbestos and the  components  and
     other  systems  affected,  and the  amount  of the  remediation  costs,  if
     required, with respect thereto, are unknown.

2.   The Shoreham Plant and Wading River Plant contain  facility  components and
     other systems  covered with paint or other  coating that contain lead,  and
     such  circumstances  could form the basis of an  Environmental  Claim.  The


                                      V-2


                                       38



     extent of this lead and the components and other systems affected,  and the
     amount of the remediation  costs, if required,  with respect  thereto,  are
     unknown.

3.   The Shoreham Plant and Wading River Plant may contain  deposits which could
     form the basis of an Environmental  Claim. The extent of deposited material
     and the amount of the remediation costs, if required, are unknown.

4.   Throughout  the life of each of the Shoreham  Plant and Wading River Plant,
     various  routine  and  other  repairs  and  maintenance   tasks  have  been
     performed,  including various component replacements.  The US EPA and other
     parties  have  made  claims  against a number of  operators  and  owners of
     electric  power  plants that  routine and other  maintenance  tasks cause a
     plant to be  "modified"  for  purposes  of the Clean Air Act and subject to
     "New Source Review" requirements,  resulting in violations of the Clean Air
     Act.  While there have been no New Source  Review  claims made  against the
     Shoreham  Plant and  Wading  River  Plant as of the date of the  Agreement,
     future  claims could be made by the US EPA or other  parties  alleging that
     previous  repairs  and  maintenance  tasks have  resulted  in Clean Air Act
     violations. The effect of such a claim, if successfully made, is not known,
     including,  but not limited to, the type and cost of the pollution  control
     equipment that would to required to meet "New Source Review" requirements.

5.   From time to time, the Shoreham Plant and Wading River Plant exceed opacity
     limits  specified  in  their  New  York  State  Title  V air  permits.  All
     exceedences are reported to the NYSDEC in accordance with the applicable NY
     DEC consent order.

6.   From time to time,  the Shoreham Plant and Wading River Plant exceed limits
     specified  in their SPDES  permits.  All  exceedences  are  reported to the
     NYSDEC in accordance with the applicable SPDES permits.







                                      V-3





                                    Exhibit A
                                    ---------

                   Form of Assignment and Assumption Agreement
                   -------------------------------------------

                       ASSIGNMENT AND ASSUMPTION AGREEMENT


AGREEMENT,  dated as of ______  __,  200_,  between  KEYSPAN  GENERATION  LLC, a
limited  liability company organized and existing under the laws of the State of
New York ("Seller"), and LONG ISLAND LIGHTING COMPANY d/b/a LIPA, a wholly-owned
subsidiary of Long Island Power Authority, a corporate municipal instrumentality
and political subdivision of the State of New York ("Buyer").

WITNESSETH:


WHEREAS,  Seller and Buyer are parties to that  certain  Option and Purchase and
Sale Agreement, dated as of ______ __, 200_ (the "Purchase and Sale Agreement");
and


WHEREAS, pursuant to the Purchase and Sale Agreement,  Seller has agreed to sell
all of its right,  title and interest in and to the Purchased  Assets other than
the Excluded Assets to Buyer, and Buyer has agreed to purchase such right, title
and interest in and to the Purchased  Assets other than the Excluded  Assets and
to assume the Assumed Liabilities other than the Excluded Liabilities;


NOW THEREFORE, for good and valuable consideration,  the receipt and sufficiency
of which are hereby  acknowledged,  in  consideration  of the  foregoing and the
mutual covenants and agreements  hereinafter set forth, subject to the terms and
conditions  of the  Purchase  and Sale  Agreement,  Seller  and  Buyer  agree as
follows:

     1.  Assignment  of Assets.  Effective  as of the date  hereof,  Seller does
hereby  sell,  convey and assign to Buyer,  free and clear of all Liens,  except
Permitted  Liens,  all of its right,  title and interest in and to the Purchased
Assets other than the Excluded  Assets and Buyer  hereby  accepts the  foregoing
assignment  of the  Purchased  Assets other than the Excluded  Assets,  upon the
terms and conditions set forth in the Purchase and Sale Agreement.

     2. Assumption of Liabilities.  Effective as of the date hereof,  Buyer does
hereby assume the Assumed Liabilities other than the Excluded Liabilities,  upon
the terms and conditions set forth in the Purchase and Sale Agreement.

     3. No Third Party Beneficiaries. Subject to the terms and conditions of the
Purchase  and Sale  Agreement,  this  Agreement  shall be binding upon and inure
solely to the  benefit  of Seller  and Buyer  and their  permitted  assigns  and
nothing  herein,  express or implied,  is  intended to or shall  confer upon any
other  Person,  any legal or  equitable  right,  benefit or remedy of any nature
whatsoever, under or by reason of this Agreement.

     4. Further Assurances. Each party hereto agrees to execute and deliver such
further documents and instruments as may be necessary or reasonably requested by
either party to further confirm and perfect the assignment and transfer to Buyer
of the rights and obligations under the Purchase and Sale Agreement with respect
to the Purchased Assets.


                                      A-1






     5. Conflict. In the event that any provision of this Agreement is construed
to conflict with a provision of the Purchase and Sale  Agreement,  the provision
in the Purchase and Sale Agreement shall be deemed controlling.

     6. Binding Nature. This Agreement shall bind and shall inure to the benefit
of the parties and their respective assigns, transferees and successors.

     7. Amendments and Waivers. This Agreement may be amended, and any provision
hereof  waived,  but only in  writing  signed  by the  party  against  whom such
amendment or waiver is sought to be enforced.

     8.  Governing  Law.  This  Agreement  shall be governed by and construed in
accordance  with the law of the  State of New York  (without  giving  effect  to
conflict of law  principles)  as to all  matters,  including  but not limited to
matters of validity, construction, effect, performance and remedies.

     9. Counterparts. This Agreement may be executed in counterparts,  which may
be delivered  by facsimile  transmission.  Each  counterpart  shall be deemed an
original,  and all counterparts taken together shall constitute one and the same
instrument.

     10. Defined Terms. Capitalized terms used herein but not defined shall have
the meanings set forth in the Purchase and Sale Agreement.




                  [Remainder of Page Intentionally Left Blank]



                                      A-2







IN WITNESS  WHEREOF,  this  Agreement  has been  signed on behalf of each of the
parties hereto as of the day and year first above written.



                                       KEYSPAN GENERATION LLC,
                                       as Seller



                                       By: _______________________________
                                              Name:
                                              Title:



                                       LONG ISLAND LIGHTING COMPANY d/b/a LIPA,
                                       as Buyer



                                       By: _________________________________
                                              Name:
                                              Title:



                                      A-3






                                    Exhibit B
                                    ---------

                           Form of Easement Agreement
                           --------------------------

                               EASEMENT AGREEMENT

     This EASEMENT  AGREEMENT  ("Agreement") made as of this ___ day of _______,
2006 between LONG ISLAND LIGHTING  COMPANY d/b/a/ LIPA, a New York  corporation,
having its principal office at 333 Earle Ovington Boulevard, Uniondale, New York
11553 (the "Grantor") and [KEYSPAN CORPORATION SUBSIDIARY],  a ________________,
having its principal office at _________________________ ("Grantee"; Grantor and
Grantee  are  sometimes  individually  referred  to  herein as the  "Party"  and
collectively referred to herein as the "Parties");

WITNESSETH:

WHEREAS,  Grantor and [Grantee] [KeySpan Generation LLC, an affiliate of Grantee
("Genco")]  are parties to that  certain  Second  Option and  Purchase  and Sale
Agreement,  dated  as  of  [  ]  (the  "Second  Purchase  and  Sale  Agreement";
capitalized  terms used herein  (including  on the exhibits  hereto) not defined
herein shall have the  meanings  given  thereto in the Second  Purchase and Sale
Agreement); and

WHEREAS,  pursuant  to the  terms of the  Second  Purchase  and Sale  Agreement,
[Grantee] [Genco] has agreed to sell all of its right, title and interest in and
to the Purchased  Assets other than the Excluded Assets to Grantor,  and Grantor
has agreed to purchase  such right,  title and interest in and to the  Purchased
Assets  other than the  Excluded  Assets and to assume the  Assumed  Liabilities
other than the Excluded Liabilities;

WHEREAS,  pursuant  to the  terms of the  Second  Purchase  and Sale  Agreement,
certain premises were conveyed by [Grantee]  [Genco] to Grantor,  which premises
are located in [Suffolk] County, New York and are more particularly described in
Exhibit "A" attached hereto (the "Grantor Premises");

WHEREAS,  Grantee owns and operates certain facilities which constitute Excluded
Assets  which are located on the Grantor  Premises,  and  Grantee  desires  that
Grantor grant to Grantee the easements described herein in order to give Grantee
the right to continue to operate,  maintain, repair, construct, and replace such
Excluded Assets.

NOW THEREFORE, for good and valuable consideration,  the receipt and sufficiency
of which are hereby  acknowledged,  in  consideration  of the  foregoing and the
mutual covenants and agreements hereinafter set forth, Grantor and Grantee agree
as follows:

WITNESSETH,  that in  consideration  of the sum of one dollar  ($1.00) and other
good and valuable  consideration,  the receipt of which is hereby  acknowledged,
Grantor does hereby grant and convey to Grantee and its  successors  and assigns
forever,  a permanent and perpetual non exclusive  easement on, over,  under and
above that  portion of the Grantor  Premises,  more  particularly  described  in
Exhibit  "B"  attached  hereto  (the  "Easement  Area")  for the  purpose of the


                                      B-1





operation,   maintenance,   repair,  construction  and  replacement  of  certain
facilities,  pipes,  pipelines  and other  facilities  described  on Exhibit "C"
attached hereto (collectively the "Facilities"). The contractors and invitees of
the Grantee and its  successors  and assigns  shall have the right to enter upon
and use the Easement Area for the foregoing purpose.

Grantee,  its successors,  assigns,  contractors and agents are also granted the
right of reasonable  access to and from the Easement Area over the driveways and
roadways  located on  Grantor's  Premises by their  vehicles and  equipment  for
purposes  of  accessing  the  Facilities  and  for  purposes  of the  operation,
maintenance, repair, construction and replacement of the Facilities.

The easement  rights and privileges  herein granted and conveyed  (collectively,
the "Easement Rights"), shall at all times be a continuing covenant running with
the land,  and shall be binding  upon,  and inure to the benefit of, the Parties
and their respective successors and assigns.

TO HAVE AND TO HOLD the Easement  Rights,  and the rights and privileges  herein
described and granted and conveyed,  unto Grantee and its successors and assigns
forever.


This Agreement is made and accepted upon the following terms and conditions:

1.   Grantee  agrees that the exercise of its  Easement  Rights on, in, under or
     above  the  Easement  Area and the  adjoining  Grantor's  Premises  and the
     operation, maintenance, repair, installation,  construction and replacement
     of any  structures or  facilities  in, on, over or under said Easement Area
     shall be  performed  in such  manner,  location  and  condition as to avoid
     damage to, or material interference with, Grantor's overhead or underground
     electric generation or other fixtures,  lines, conduits, pipes, pipe lines,
     equipment and  facilities  now or hereafter  located on, in, under or above
     Grantor's Premises.

2.   Grantor, including its agents, contractors and subcontractors, reserves and
     retains  the right and  privilege  to  utilize  the  Easement  Area for the
     conduct of  Grantor's  business and any purpose  related  thereto or to the
     ownership,  operation,  maintenance,  repair, replacement,  installation or
     construction of any facilities, lines, pipes, pipelines, conduits, fixtures
     or equipment now or hereafter  located in, on, under or above such Easement
     Area provided the exercise of such rights by Grantor shall not unreasonably
     interfere with Grantee's Easement Rights hereunder.

3.   Subject to Grantee's obligations under Section 6 below and Grantor's rights
     under  Section 23 below,  Grantor  agrees to maintain the Easement  Area in
     substantially the same condition as exists on the date hereof (exclusive of
     the Facilities or any additions thereto or substitutions thereof).  Subject
     to Grantor's  rights  under  Section 23 below,  no above  ground  permanent
     building, structure or physical obstruction, including trees and shrubbery,
     shall be installed after the date hereof by Grantor on the Easement Area to
     the  extent  that  such   building,   structure  or  physical   obstruction
     unreasonably  interferes  with Grantee's  rights to enter upon,  occupy and
     utilize the Easement  Area as set forth in this  Agreement.  Grantee  shall
     have the right, in connection with the exercise of its Easement Rights,  at


                                      B-2




     Grantee's  sole cost and  expense,  to remove  any roots,  trees,  brush or
     similar nature-related  obstructions which necessarily must be removed from
     the Easement Area in  connection  with  Grantee's  exercise of its Easement
     Rights;  provided,  however, Grantee shall be responsible for restoring the
     balance of the Easement  Area to  substantially  the same  condition  which
     existed immediately prior to Grantee's exercise of its Easement Rights.

4.   The  Facilities  shall at all times be and remain the  property of Grantee,
     its successors and assigns.

5.   Subject  to the  conditions  set forth in Section 3 above,  Grantee  agrees
     that,   in  connection   with  any   installation,   repair,   replacement,
     construction,  maintenance  or other  work  performed  by or on  behalf  of
     Grantee in the Easement  Area,  Grantee  shall at its sole cost and expense
     promptly  repair  and  restore  the  Easement  Area  to  substantially  the
     condition which existed  immediately  prior to such  installation,  repair,
     replacement,  construction,  maintenance or other work, any portions of the
     Grantor's  Premises which are damaged or disturbed by such  installation or
     work, except for trees, roots, brush or similar nature-related obstructions
     required to be removed from the Easement Area.

6.   Each Party (the "Indemnifying Party") shall indemnify and hold harmless the
     other  (the  "Indemnified   Party"),  the  Indemnified  Party's  respective
     directors,    trustees,   officers,    employees,    parents,   affiliates,
     subsidiaries, agents, assigns, successors,  representatives and contractors
     from and  against  all  liabilities,  penalties,  losses,  costs,  damages,
     claims, proceedings,  suits, judgments, liens, encumbrances, or expenses of
     whatever form or nature,  including  reasonable  attorneys'  fees and other
     costs of legal defense and of  investigating  any  proceeding  commenced or
     threatened,  whether direct or indirect,  as a result of, arising out of or
     in any way connected with the Indemnifying Party's use and occupation of or
     activities  upon the  Easement  Area or the  exercise of such  Indemnifying
     Party's rights and breach of such Party's obligations under this Agreement,
     whenever made or incurred.  The  Indemnified  Party shall have the right to
     demand that the  Indemnifying  Party  undertake to defend any and all suits
     and to investigate  and defend any and all claims,  against the Indemnified
     Party or the Indemnified Party's respective directors,  trustees, officers,
     employees, parents, affiliates,  subsidiaries, agents, assigns, successors,
     representatives   or  contractors   related  to  or  arising  out  of  such
     Indemnifying  Party's use or occupation of or activities  upon the Easement
     Area or the  Indemnifying  Party's  exercise of its rights and  obligations
     hereunder.  Notwithstanding the foregoing, Grantor shall have no obligation
     to indemnify  or defend  against any loss,  judgment,  claim or suit to the
     extent such loss, judgment,  claim or suit which relates to any liabilities
     (i) which were expressly  assumed by Grantor under the Second  Purchase and
     Sale  Agreement,  or (ii) which are otherwise  included  within the Assumed
     Liabilities.


                                      B-3



7.   The Parties and their  respective  successors  and assigns agree to procure
     and keep in force during the term of this  Agreement the following  minimum
     insurance coverages (which may be through self-insurance),  and each of the
     Parties and their respective mortgagees and ground lessees, if any, must be
     added to and named as additional  insureds on the other  Party's  insurance
     policies:

          (i) New York State  Worker's  Compensation  Insurance  and  Employer's
     Liability Insurance;

          (ii) Commercial General Liability Insurance including Personal Injury,
     Death, Contractual, Contingent,  Products/Completed Operations, Independent
     Contractors,  Broad Form Property Damage, and coverage for damage caused by
     explosion,   collapse  or  structural   injury  or  damage  to  underground
     utilities, and such policy must not contain any "x, c and u" exclusions;

          (iii)  Commercial   Automobile   Liability   Insurance   covering  all
     automobile,  trucks and other  vehicles  utilized  at the Site,  including,
     without limitation, all hired and non-owned vehicles;

     Each of (ii) and (iii) above shall  afford  protection  in an amount of not
     less than Two Million Dollars  ($2,000,000)  combined single limit coverage
     arising out of any one occurrence and Ten Million Dollars  ($10,000,000) in
     the aggregate; and

          (iv) Pollution or  Environmental  Legal Liability in the amount of Ten
     Million  Dollars  ($10,000,000)  per  occurrence  and Ten  Million  Dollars
     ($10,000,000)  in the  aggregate  as an  extension  of (ii)  above  or in a
     separate  policy  providing at the minimum sudden and accidental  pollution
     liability.

     In addition,  prior to performing  any work in the Easement  Area,  Grantee
     shall  cause  its  contractors  to carry a  policy  of  commercial  general
     liability  insurance,  naming  the  Grantor  and its  mortgagee  and ground
     lessee, if any, as additional  insureds in the amounts set forth in clauses
     (ii) and (iii) above,  and cause its  contractors  to carry a policy of New
     York State Workers Compensation Insurance.

     The  Parties  shall  provide  each other  with  Certificates  of  Insurance
     indicating  the  coverages  noted  above.  Such  policies  shall  contain a
     provision  whereby  either  Party shall  receive at least  thirty (30) days
     written notice prior to the  cancellation or material  modification of such
     policies.  In  the  event  that  such  insurance  is  available  only  on a
     claims-made  basis,  then the dates of coverage,  including the retroactive
     date and the time  period  within  which any  claim can be filed,  shall be
     stated in the  Certificate  of Insurance,  and the insuring  Party shall be
     obligated to ensure that no gaps in coverage occur.


                                      B-4




     Such  insurance  shall not relieve or release the  Parties  from,  or limit
     their  respective  liability as to, any and all  obligations  arising under
     this Agreement.

     Each of the Parties may provide any insurance  required  hereunder  under a
     blanket policy or policies.

8.   Each Party shall provide the other with at least 5 days prior notice of any
     intended construction activity within the Easement Area.

9.   This  Agreement  shall  commence and become  effective  upon the  execution
     thereof  by  both  of  the  Parties,   and  shall  continue  thereafter  in
     perpetuity.

10.  This  Agreement  shall be  binding  upon and  inure to the  benefit  of the
     successors and assigns of the respective Parties hereto.

11.  Grantee agrees, in exercising its Easement Rights, that it will comply with
     all laws, orders,  ordinances,  rules,  regulations and requirements of all
     governmental authorities having jurisdiction.

12.  There  shall be no  liability  on the  Grantor  and  persons  occupying  or
     lawfully present on the ground surface of the Easement Area for damage,  if
     any, which may be caused to any facilities  located  beneath the surface of
     such  Easement  Area by  normal  and  reasonable  use of, or  vehicular  or
     pedestrian traffic over such Easement Area (including,  without limitation,
     landscaping),  except to the extent caused by Grantor's gross negligence or
     willful misconduct.

13.  The Grantee shall take any easement as to which it is the grantee hereunder
     without  warranty  of  title  and  subject  and  subordinate  to all  valid
     easements, encumbrances, covenants and restrictions affecting the Grantor's
     Premises  as of the date  hereof,  and in its then  "as is"  condition  and
     without any representation or warranty whatsoever.

14.  In the event of any actual or threatened  violation hereof by either Party,
     damages  will not afford an adequate  remedy  hereunder to the other Party,
     and the other Party shall be deemed to suffer irreparable harm and shall be
     entitled to  injunctive  relief and  specific  performance  from a court of
     competent jurisdiction.

15.  If the Grantor or the Grantee (in any case a "Defaulting  Owner")  violates
     any  covenant,   condition  or  restriction,  if  any,  contained  in  this
     Agreement,  then in  addition  to any  other  remedy  provided  for in this
     Agreement,  the Grantor or the Grantee (the "Creditor Owner") may demand by
     written notice (the "Default  Notice") that the violation be cured.  If the
     Defaulting  Owner does not cure the violation within twenty (20) days after
     receipt of the Default Notice, or if such default is of a kind which cannot
     reasonably be cured within twenty (20) days, and the Defaulting  Owner does
     not within such twenty  (20) day period  commence to cure such  default and
     diligently thereafter prosecute such cure to completion,  then the Creditor
     Owner (and its agents,  contractors and employees)  shall have the right to
     (i) enter upon the property of the  Defaulting  Owner and summarily  abate,
     remove or  otherwise  remedy  any  improvement,  thing or  condition  which
     violates the terms of this  Agreement,  and (ii) enter upon the property of


                                      B-5




     the Defaulting  Owner and perform any obligation of the Defaulting Owner to
     be performed  thereon.  Notwithstanding  anything to the contrary set forth
     above, in the event such violation relates to an emergency  condition which
     presents an immediate  danger to life or property,  within two (2) business
     days after  receipt of a Default  Notice (or such shorter  period as may be
     reasonably  practicable under the circumstances),  the Creditor Owner shall
     have  the  right to  exercise  the  remedies  set  forth  in the  preceding
     sentence.  The  Defaulting  Owner  shall,  within  ten (10) days of written
     demand  by  the  Creditor  Owner,   accompanied  by  reasonable  supporting
     documentation,  reimburse  the  Creditor  Owner for all costs and  expenses
     reasonably incurred by the Creditor Owner in undertaking any of the actions
     permitted  by clauses (i) and (ii) of this  paragraph,  including,  without
     limitation,  wages, benefits and overhead allocable to the time expended by
     any employee of the Creditor  Owner in taking such  actions,  together with
     interest  thereon at the Prime Rate,  from the date such costs and expenses
     were  advanced or incurred by the Creditor  Owner until the date such costs
     and expenses were paid by the Defaulting Owner.

16.  No breach of this  Agreement or default by either  Party shall  entitle the
     other Party to terminate or cancel this Agreement.

17.  All  rights,  privileges  and  remedies  afforded  to the  Parties  by this
     Agreement shall be deemed to be cumulative,  and the exercise of any one of
     such remedies shall not be deemed to be a waiver of any other right, remedy
     or privilege provided for herein.

18.  Nothing  contained in this Agreement shall be construed to make the Parties
     hereto  partners or joint  venturers,  or to render  either of said Parties
     liable for the debts or obligations of the other Party.

19.  Whenever it is provided in this Agreement that a notice,  demand,  request,
     consent, approval or other communication shall or may be given to or served
     upon either of the Parties by the other, and whenever either of the Parties
     shall desire to give or serve upon the other any notice,  demand,  request,
     consent,  approval or other  communication  with  respect  hereto or to the
     subject matter hereof, each such notice, demand, request, consent, approval
     or other  communication  shall be in writing and, any law or statute to the
     contrary  notwithstanding,  shall be effective  for any purpose if given or
     served as follows:

                    (a)  Notice  to  Grantor.  By  hand or  reputable  overnight
                    courier delivery,  against a receipt, or by mailing the same
                    by registered or certified  mail,  postage  prepaid,  return
                    receipt requested, addressed to:



                                      B-6







                    with a copy simultaneously to:







                    and to such other  address(es)  as the Grantor may from time
                    to time  designate by notice  given to the other  parties as
                    aforesaid.


                    (b)  Notice  to  Grantee.  By  hand or  reputable  overnight
                    courier delivery,  against a receipt, or by mailing the same
                    by registered or certified  mail,  postage  prepaid,  return
                    receipt requested, addressed to:







                    with a copy simultaneously to:







                    and to such other  address(es)  as the Grantee may from time
                    to time  designate by notice  given to the other  parties as
                    aforesaid.


20.  Every notice, demand,  request,  consent,  approval, or other communication
     hereunder  shall be deemed to have been given or served upon the earlier to
     occur of receipt or refusal to receipt.

21.  All construction,  repairs,  maintenance,  installations,  replacements and
     additions  being  performed  on the  Easement  Area by the  Grantee  or its
     contractors, agents, employees, laborers and materialmen shall be performed
     in such a manner so as to minimize interference and avoid any conflict with
     other   contractors,   mechanics,   laborers  or   materialmen   performing
     construction,   repairs,   maintenance,   installations,   replacements  or
     additions on Grantor's Premises.  All construction,  repairs,  maintenance,
     installations,  replacements  and additions  being performed on the Grantor
     Premises by the Grantor or its contractors, agents, employees, laborers and
     materialmen  shall  be  performed  in  such  a  manner  so as  to  minimize


                                      B-7




     interference  and avoid any  conflict  with other  contractors,  mechanics,
     laborers or  materialmen  performing  construction,  repairs,  maintenance,
     installations, replacements or additions for Grantee in the Easement Area.

22.  The Grantor and the Grantee  shall each,  within  fifteen  (15) days of the
     written  request  of the  other,  issue to the  requesting  party or to any
     mortgagee,  purchaser  or ground  lessee of the  Grantor's  Premises or any
     portion thereof,  an estoppel  certificate stating (i) whether the party to
     whom the request has been directed knows of any default under the Agreement
     and if there are known  defaults  specifying  the nature thereof or whether
     any events have occurred  which but for the giving of notice or the passage
     of time,  or both,  would  constitute  such a default;  (ii)  whether  this
     Agreement has been  assigned,  modified or amended in any way by such party
     (and if it has,  then  stating  the nature  thereof);  (iii)  whether  this
     Agreement  as of that date is in full force and  effect;  and (iv) that the
     estoppel  certificate  may be relied upon by the  requesting  party or such
     mortgagee, ground lessee, or purchaser, as the case may be.

23.  Grantor shall have the right to direct  Grantee to relocate the  Facilities
     or any portion thereof to another  location on the Grantor's  Premises when
     necessary for the conduct of Grantor's business on the Grantor's  Premises.
     In the event that Grantor  shall have given such a  direction,  Grantor and
     Grantee  shall meet and  cooperate  in good faith and use all  commercially
     reasonable  efforts to agree upon a new location on the Grantor's  Premises
     to which  such  Facilities  can be  relocated  and the  relocation  process
     therefor  (including the timing of the  relocation).  Any such new location
     and relocation  process  (including the timing thereof) shall be subject to
     the mutual  agreement  of Grantor and Grantee and shall be  determined  and
     agreed  upon so  that  the  relocation  will  not  result  in any  material
     interference with the operation of any of the Facilities.  In the event the
     parties are unable to agree upon a new location and process therefor within
     90 days of Grantee's  receipt of  Grantor's  direction,  the parties  shall
     refer the matter to arbitration for binding  resolution under the expedited
     dispute  resolution  provisions  of Section 7.8 of the Amended and Restated
     MSA, dated as of January 1, 2006, as amended,  between  Grantor and KeySpan
     Electric  Services,  LLC. The Grantor and the Grantee shall,  in connection
     with any relocation  pursuant to this Section 23, cooperate with each other
     to execute and deliver, and record with the appropriate  recording offices,
     such amendments to this agreement and other  instruments as may be required
     to grant to Grantee an easement for such  Facilities in the relocation area
     and otherwise to reflect such relocation,  including,  without  limitation,
     amending  the  legal  description  of the  Easement  Area  to  reflect  the
     relocation  area.  All  costs,  fees and  expenses  incurred  by Grantee to
     relocate any  Facilities  pursuant to this Section 23 shall be borne by the
     Grantor  (except if such costs,  fees and expenses are  obligations  of any
     third  party other than an  affiliate  of the  Grantee,  in which case such
     costs, fees and expenses shall be borne by such third party).

                      (Signatures appear on following page)


                                      B-8





     IN WITNESS WHEREOF,  the Parties have executed this Agreement as of the day
and year first above written.

                                            LONG ISLAND LIGHTING COMPANY d/b/a/
                                            LIPA


                                            By:
                                                -------------------------------
                                                Name:
                                                Title:


                                            [KEYSPAN CORPORATION SUBSIDIARY]


                                            By:
                                                -------------------------------
                                                Name:
                                                Title:









                                      B-9




                                    Exhibit C
                                    ---------

                   Form of Operation and Maintenance Agreement
                   -------------------------------------------












                                      C-1





           Exhibit C to Second Option and Purchase and Sale Agreement

                                                                     FINAL COPY




                       OPERATION AND MAINTENANCE AGREEMENT


                                     between


                    LONG ISLAND LIGHTING COMPANY (d/b/a LIPA)


                                       and


                        [KEYSPAN CORPORATION SUBSIDIARY]


                           Dated as of [_____________]







                                TABLE OF CONTENTS
                                -----------------



                                                                                                               Page
                                                                                                               ----

                                                                                                             
ARTICLE 1 DEFINITIONS.............................................................................................1


ARTICLE 2 OPERATOR'S SERVICES.....................................................................................7

         2.1.     Scope of Services...............................................................................7
                  2.1.1.   Services to be Provided by Operator....................................................7
                  2.1.2.   General Service Requirements...........................................................8
         2.2.     Minimum Loadings Ramp Rate, Start-Up Times and Minimum Scheduled Shut Down......................9
         2.3.     Plant Document Preparation......................................................................9
                  2.3.1.   O&M Procedures.........................................................................9
                  2.3.2.   Preventive Maintenance Program.........................................................9
                  2.3.3.   Administrative Procedures Manual.......................................................9
         2.4.     Plant Staffing..................................................................................9

ARTICLE 3 OWNER RESPONSIBILITIES.................................................................................10

         3.1.     General........................................................................................10
         3.2.     Information....................................................................................10
         3.3.     Site Access and Facilities.....................................................................10
         3.4.     Permits........................................................................................10
         3.5.     Other Services.................................................................................10

ARTICLE 4 BUDGET PREPARATION, REVIEW AND ADOPTION................................................................10

         4.1.     Annual Capital Budget Preparation..............................................................10
         4.2.     Annual Capital Budget Review...................................................................10

ARTICLE 5 BILLING DATA AND OTHER OPERATING REPORTS...............................................................11

         5.1.     Reports........................................................................................11
                  5.1.1.   Monthly Reports.......................................................................11
                  5.1.2.   Quarterly Reports.....................................................................11
         5.2.     Notice from Judicial/Governmental Authorities..................................................11
         5.3.     Government Reports.............................................................................11
         5.4.     Other Information..............................................................................12

ARTICLE 6 DISPUTE RESOLUTION.....................................................................................12

         6.1.     General........................................................................................12
         6.2.     Negotiation....................................................................................12
         6.3.     Dispute Resolution Following Negotiation.......................................................12
         6.4.     Mediation......................................................................................12
         6.5.     Arbitration....................................................................................13


                                       i



         6.6.     Provisional Relief.............................................................................13
         6.7.     Information Exchange...........................................................................13
         6.8.     Site of Arbitration............................................................................13
         6.9.     Awards.........................................................................................14
         6.10.    Grounds for Judicial Review....................................................................14
         6.11.    No Interruption................................................................................14

ARTICLE 7 COMPENSATION AND PAYMENT...............................................................................14

         7.1.     Monthly Invoices...............................................................................14
         7.2.     Fuel Management Fee............................................................................14
         7.3.     Audit..........................................................................................14
         7.4.     Maximum Variable Charge Payment................................................................15

ARTICLE 8 TERM AND TERMINATION...................................................................................15

         8.1.     Effective Date.................................................................................15
         8.2.     Term...........................................................................................15
         8.3.     Termination by Operator........................................................................16
                  8.3.1.   Termination Rights....................................................................16
                  8.3.2.   Payment...............................................................................16
         8.4.     Termination by Owner...........................................................................16
                  8.4.1.   Termination for Cause.................................................................16
                  8.4.2.   Termination for Convenience...........................................................17
         8.5.     Plant Condition at End of Term.................................................................17

ARTICLE 9 INSURANCE..............................................................................................18

         9.1.     Operator Insurance Coverage....................................................................18
                  9.1.1.   Plant Liability Insurance.............................................................18
                  9.1.2.   Workers Compensation and Employers Liability Insurance................................19
                  9.1.3.   General Insurance Provisions..........................................................19
                  9.1.4.   Operator Disclosure and Cooperation...................................................20
         9.2.     Owner Insurance Coverage.......................................................................20
         9.3.     Self-Insurance, etc............................................................................20

ARTICLE 10 INDEMNIFICATION.......................................................................................21

         10.1.    Indemnification of Owner.......................................................................21
         10.2.    Indemnification of Operator....................................................................22
         10.3.    Notice.........................................................................................23
         10.4.    Deferral of Dispute Resolution.................................................................23

ARTICLE 11 GENERAL LIMITATIONS OF LIABILITY......................................................................23

         11.1.    Total Liability................................................................................23
         11.2.    Consequential Damages..........................................................................24
         11.3.    Owner Actions..................................................................................24


                                       ii




         11.4.    Survival and Application.......................................................................24

ARTICLE 12 ENVIRONMENTAL MATTERS.................................................................................24

         12.1.    Site Conditions................................................................................24
                  12.1.1.  Disclosure............................................................................24
         12.2.    Insurance/Indemnification......................................................................24
         12.3.    Compliance.....................................................................................25
         12.4.    New Source Review Requirements.................................................................25

ARTICLE 13 NONDISCLOSURE.........................................................................................25

         13.1.    General........................................................................................25
         13.2.    Exceptions.....................................................................................25
         13.3.    Required Disclosure............................................................................26

ARTICLE 14 DOCUMENTS AND MATERIALS...............................................................................26

         14.1.    Documents and Materials........................................................................26
         14.2.    Review by Owner................................................................................26

ARTICLE 15 MISCELLANEOUS PROVISIONS..............................................................................26

         15.1.    Agreement......................................................................................26
         15.2.    Relationship of the Parties....................................................................26
         15.3.    KeySpan Guaranty...............................................................................26
         15.4.    Assignment.....................................................................................27
         15.5.    Access.........................................................................................27
                  15.5.1.  Owner.................................................................................27
                  15.5.2.  Cooperation...........................................................................27
         15.6.    Not for Benefit of Third Parties...............................................................27
         15.7.    Force Majeure..................................................................................27
                  15.7.1.  Events Constituting Force Majeure.....................................................27
                  15.7.2.  Event of Force Majeure................................................................28
                  15.7.3.  Scope.................................................................................28
         15.8.    Strikes........................................................................................28
         15.9.    Amendments.....................................................................................29
         15.10.   Survival.......................................................................................29
         15.11.   No Waiver......................................................................................29
         15.12.   Notices........................................................................................29
         15.13.   Representations and Warranties.................................................................29
                  15.13.1. Owner Representations and Warranties..................................................30
                  15.13.2. Operator Representations and Warranties...............................................30
         15.14.   Counterparts...................................................................................31
         15.15.   Governing Law..................................................................................31
         15.16.   Captions; Appendices...........................................................................31
         15.17.   Non-Recourse...................................................................................31
         15.18.   Severability...................................................................................31


                                      iii




         15.19.   Rules of Interpretation........................................................................31
         15.20.   Private Use Rules..............................................................................32
         15.21.   State Law Requirements.........................................................................32



                                   APPENDICES
                                   ----------

Appendix A - Excluded Services
Appendix B - Allocated Fixed O&M Cost Payment
Appendix C - KeySpan Guaranty
Appendix D - Fuel Management Services
Appendix E - Provisions Required by State Law












                                       iv





                       OPERATION AND MAINTENANCE AGREEMENT
                       -----------------------------------

     This OPERATION AND MAINTENANCE  AGREEMENT (the "Agreement") is entered into
as of  [___________],  by and between LONG ISLAND  LIGHTING  COMPANY  d/b/a LIPA
("Owner",  and also referred to herein as "LIPA"), a wholly-owned  subsidiary of
the Long Island  Power  Authority,  a corporate  municipal  instrumentality  and
political  subdivision  of the  State  of New  York,  and  [KEYSPAN  CORPORATION
SUBSIDIARY] ("Operator"), a corporation organized and existing under the laws of
the State of New York.

                                    RECITALS

     WHEREAS,  LIPA and an affiliate of Operator,  KeySpan Generation,  LLC, are
parties to a Second Option and Purchase and Sale Agreement dated as of March 22,
2007 ( the "Second Option  Agreement")  pursuant to which,  subject to the terms
and conditions  thereof,  LIPA has exercised an option to purchase the Plant (as
defined below); and

     WHEREAS,  Owner and Operator are entering into this  Agreement  pursuant to
Section  6.1 of the Second  Option  Agreement,  in order for the Owner to retain
Operator to operate and  maintain  the Plant upon the terms and  conditions  set
forth in this Agreement.

     NOW,  THEREFORE,  in consideration of the mutual promises set forth herein,
the parties agree as follows:

                                    ARTICLE 1

                                   DEFINITIONS

     Unless otherwise required by the context in which any defined term appears,
the following capitalized terms have the meanings specified in this Article 1:

          "Administrative  Procedures  Manual" has the meaning  ascribed to that
     term in Section 2.3.3.

          "Affiliate"  means, with respect to any Person,  any other Person that
     directly or  indirectly  controls,  is  controlled  by, or is under  common
     control  with  such  Person.  For  purposes  of the  foregoing  definition,
     "control" means (i) the direct or indirect ownership of fifty percent (50%)
     or more of the  outstanding  capital  stock or other  securities  or equity
     interests  having  ordinary  voting power to elect the board of  directors,
     managing general partner or similar managing authority or (ii) the power to
     direct the management of such Person.

          "Agreement" means this Operation and Maintenance Agreement,  including
     all Appendices  annexed hereto and any terms  specifically  incorporated by
     reference,  and any  amendments  hereto  agreed in writing  by the  parties
     hereto.

          "Allocated  Fixed O&M Cost  Payment"  means a monthly  payment made by
     Owner to Operator determined in accordance with Appendix B.





          "Annual Capital Budget" has the meaning set forth in Section 4.2.

          "Applicable  Law"  means  any  Permit  or  any  law,   statute,   act,
     regulation,  code,  ordinance,  rule, judgment,  order, decree,  directive,
     requirement,  guideline or any similar  decision or  determination,  or any
     Governmental  Authority's official  interpretation or administration of any
     of the foregoing, which governs or affects the Plant, as now or hereinafter
     in effect.

          "Arbitrators" has the meaning set forth in Section 6.5.

          "Availability"  means the availability of the Plant as measured by the
     North   American   Electric   Reliability   Council   (NERC)  -  Generating
     Availability Data System (GADS)  Availability  Factor Formula, as set forth
     in Section II of Appendix F to the Power Supply Agreement.

          "Bankrupt"  means  with  respect  to a party,  such  party (a) files a
     petition  or  otherwise   commences  a  proceeding  under  any  bankruptcy,
     insolvency,  reorganization  or similar law, or has any such petition filed
     or commenced against it, (b) makes an assignment or any general arrangement
     (other than an assignment  undertaken in connection  with a financing)  for
     the benefit of  creditors,  (c)  otherwise  becomes  bankrupt or  insolvent
     (however  evidenced),  (d)  has  a  liquidator,  administrator,   receiver,
     bankruptcy trustee,  conservator or similar official appointed with respect
     to it or any substantial  portion of its property or assets,  provided that
     if such action is taken without such party's  consent,  such party shall be
     allowed 60 days to dismiss such appointment,  or (e) is generally unable to
     pay its debts as they come due.

          "Business  Day" means any day other than a  Saturday,  Sunday or legal
     holiday.  Legal  holidays  are  those  holidays  set  forth  in  Operator's
     collective bargaining agreements.

          "Calendar  Year" means (i)  initially,  the period from the  Effective
     Date to the last day of next succeeding December and (ii) thereafter,  each
     12-month period beginning on the first day of each January.

          "Chair" has the meaning set forth in Section 6.5.

          "Computerized  Maintenance  Management System" means a computer system
     to manage maintenance activities, such as work order creation and tracking,
     maintenance  scheduling,  equipment history,  parts information,  inventory
     tracking, manhours required for maintenance, and the Preventive Maintenance
     Program.

          "Confidential  Information"  has the meaning  ascribed to that term in
     Section 13.1.

          "City Gate" means a receipt  point of natural gas at any point located
     at the New York  Facilities at which KeySpan may now have rights to receive
     natural gas.

          "CPR" means the  International  Institute  for  Conflict  Prevention &
     Resolution.


                                       2



          "CPR Mediation  Procedures" mean the procedures published from time to
     time by the CPR for the conduct of mediations.

          "CPR Rules" has the meaning set forth in Section 6.5.

          "Default  Interest Rate" means the rate  established from time to time
     as the "overpayment rate" pursuant to Subsection (e) of Section 1096 of the
     New York State Tax Law by the New York State  Commission  of  Taxation  and
     Finance,  as applicable  to Owner under Section  2880(7)(c) of the New York
     State Public Authorities Law.

          "Dispute"  means  any  dispute  arising  out  of or  relating  to  the
     Agreement.

          "Effective Date" has the meaning ascribed to that term in Section 8.1.

          "Emergency"  means an event  occurring at the Plant which poses actual
     or  imminent  risk  of  serious   personal   injury,   physical  damage  or
     environmental  contamination  requiring immediate  preventative or remedial
     action by Operator.

          "Energy Management  Agreement" means the Energy Management  Agreement,
     by and between LIPA and KETS,  dated as of June 26, 1997, as amended by the
     first  amendment  thereto,  dated  March 29,  2002,  the  second  amendment
     thereto,  dated  December  30, 2005,  the third  amendment  thereto,  dated
     _______, and the fourth amendment thereto, dated __________..

          "Environmental Claim" means any and all administrative,  regulatory or
     judicial  actions,  suits,  or  proceedings  alleging  potential  liability
     arising  out of (a) the  Release  into  the  environment  of any  Hazardous
     Materials at the Plant; or (b) any violation of any  Environmental Law with
     respect to the Plant.

          "Environmental  Law" means all applicable  federal,  state,  and local
     statutes,  ordinances,  and  regulations  relating  to  pollution  and  the
     protection of the environment.

          "Excluded  Services"  means  those  services  set forth in  Appendix A
     annexed hereto.

          "FAA" has the meaning set forth in Section 6.9.

          "Fees-And-Costs"  means  reasonable  fees and  expenses of  employees,
     attorneys,   architects,    engineers,   accountants,   expert   witnesses,
     contractors,  consultants  and other  persons,  and  costs of  transcripts,
     printing  of briefs and  records on appeal,  copying  and other  reimbursed
     expenses, and expenses of any Legal Proceeding.

          "FERC" means the Federal Energy Regulatory Commission.

          "Firm Gas  Supply"  means a type of natural  gas supply  delivered  or
     transported  to a City Gate that may not be  interrupted  except  for Force
     Majeure events.  Such gas may be interrupted on the gas distribution system
     serving KeySpan's existing gas service area whenever its continued delivery
     would  adversely  affect the  reliability  of the gas  distribution  system
     serving KeySpan's existing gas service area.


                                       3



          "Force  Majeure"  has the  meaning  ascribed  to that term in  Section
     15.7.1.

          "Fuel" means natural gas, oil,  kerosene or other fossil fuel used for
     operating the Plant.

          "Fuel Management Fee" has the meaning ascribed to that term in Section
     7.2.

          "Gas  Balancing"  means  the type of  service  currently  provided  by
     KeySpan  whenever the aggregate daily gas taken for use by the Plant varies
     from the daily nominated  quantity.  When this occurs,  Operator will cause
     certain assets  currently  owned or contracted for by KeySpan to be used to
     either provide  additional  quantities of gas required by the Plant or take
     back any excess quantities not required by the Plant.

          "Guarantor" means KeySpan.

          "Governmental  Authority"  means any  Federal,  state,  local or other
     governmental,  regulatory or administrative agency, commission, department,
     board, or other governmental subdivision, court, tribunal, arbitral body of
     other  governmental  authority,  but  excluding  any owner of the Plant (if
     otherwise a Governmental  Authority under this  definition)  when acting in
     its ownership capacity.

          "Hazardous  Materials"  means (A) any petroleum,  asbestos in any form
     that is friable,  and  polychlorinated  biphenyls;  and (B) any  chemicals,
     materials  or  substances  which  are now  defined  as or  included  in the
     definition  of  "hazardous   substances,"  "hazardous  wastes,"  "hazardous
     materials,"  "extremely hazardous wastes,"  "restricted  hazardous wastes,"
     "toxic substances," or "toxic pollutants" under any Environmental Law.

          "Indemnified  Party" has the meaning  ascribed to that term in Section
     10.3.

          "Indemnifying  Party" has the meaning ascribed to that term in Section
     10.3.

          "Interruptible  Gas Supplies"  means natural gas supplies that will be
     interrupted whenever the supplier recalls supplies pursuant to a negotiated
     supply   contract   and/or   the   interstate   pipeline   interrupts   the
     transportation  of such gas supply  pursuant to its FERC  approved  tariff.
     Such gas supplies may also be interrupted for force majeure events.

          "KETS" means KeySpan Energy Trading Services LLC.

          "KeySpan" means KeySpan Corporation, a New York corporation.

          "KeySpan  Guaranty"  has the meaning  ascribed to that term in Section
     15.3.


                                       4



          "Loss-and-Expense" means any and all losses, liabilities, obligations,
     damages,  delays, fines,  penalties,  judgments,  deposits,  costs, claims,
     demands,   charges,   assessments,   taxes,  or  expenses,   including  all
     Fees-And-Costs.

          "New York Facilities" or "NYF" means the system of gas mains severally
     owned  and  operated  by  KeySpan,  The  Brooklyn  Union  Gas  Company  and
     Consolidated Edison Co. of New York, Inc. pursuant to the NYF Agreement.

          "NYF Agreement" means the New York Facilities  Agreement  entered into
     as of January  1,  1994,  by an between  The  Brooklyn  Union Gas  Company,
     Consolidated  Edison Co. of New York,  Inc.,  and KeySpan,  as successor to
     Long Island Lighting Company, as the same may be amended in accordance with
     its terms.

          "O&M Manual" means all equipment manuals, system descriptions,  system
     operating  instructions,  equipment maintenance  instructions and pertinent
     design documentation  (including vendor and manufacturer manuals,  as-built
     drawings  and all final  specifications)  for the Plant  provided by Owner,
     Operator, manufacturers, suppliers or vendors.

          "O&M Procedures" means the procedures developed by Operator as defined
     in Section 2.3.1.

          "Operator  Indemnified  Parties" has the meaning ascribed to that term
     in Section 10.2.

          "Owner  Indemnified  Parties" has the meaning ascribed to that term in
     Section 10.1.

          "Party Appointed Arbitrators" has the meaning ascribed to that term in
     Section 6.5.

          "Permits" means collectively all authorizations,  approvals, licenses,
     rulings, permits, waivers, certifications,  exemptions,  variances, filings
     or  registrations by or with any  Governmental  Authority  required for the
     operation,  maintenance,  repair,  subsequent  improvement,   modification,
     replacement and ownership of the Plant.

          "Person"  means,  unless  otherwise   specified,   a  natural  person,
     corporation,   limited  liability  company,  partnership,   joint  venture,
     unincorporated   association,   society  or  other   entity,   including  a
     Governmental Authority.

          "Plant" means the [insert  definition from Option  Agreement of either
     Shoreham Plant or Wading River Plant].

          "Plant  Documents"  means  the O&M  Manual,  the O&M  Procedures,  the
     Administrative Procedures Manual, the Annual Capital Budget, administrative
     and general procedures, Emergency response procedures and other manuals and
     procedures for the Plant developed by Operator from time to time.


                                       5



          "Plant  Liability  Insurance" has the meaning ascribed to that term in
     Section 9.1.1.

          "Power  Supply  Agreement"  means the Power Supply  Agreement,  by and
     between  LIPA and  GENCO,  dated as of June 26,  1997,  as  amended  by the
     amendments thereto, dated [___________].

          "Preventive Maintenance Program" has the meaning ascribed to that term
     in Section 2.3.2.

          "Prudent  Electric  Production  Practices" means any of the practices,
     methods and acts,  as revised  from time to time,  that are then  generally
     accepted by the electric  generation  industry and commonly used in prudent
     electric  generation  engineering  and  operations  to operate and maintain
     equipment lawfully, safely, dependably and economically,  and as would have
     been expected, in the exercise of reasonable judgment in light of the facts
     and  characteristics  of the Plant known, or should have been known, at the
     time the decision is made, to accomplish  the desired  result at the lowest
     reasonable cost in a manner  consistent with  Applicable  Laws,  applicable
     Permits,  reliability,   safety,  environmental  protection,   economy  and
     expediency,  including,  without limitation, those established by the North
     American Electric  Reliability  Council, as applicable to units of the size
     and  type of the  Plant.  Prudent  Electric  Production  Practices  are not
     intended  to be limited to the  optimum  practices,  methods or acts to the
     exclusion  of others,  but rather to the  spectrum of  possible  practices,
     methods  and  acts  generally  accepted  by a  significant  portion  of the
     electric  generation  industry in the relevant region,  during the relevant
     time period, as described in the preceding sentence.

          "Quarterly  Report"  means the report  prepared on a monthly  basis by
     Operator as further described in Section 5.1.2.

          "Release"  means  any  release,  spill,  emission,  leaking,  pumping,
     pouring,  injection,  escaping,  deposit, disposal,  discharge,  dispersal,
     leaching,  or migration into the indoor or outdoor environment  (including,
     without limitation, the abandonment or disposal of any barrels,  containers
     or other closed receptacles containing any hazardous materials), as well as
     the  movement of any  hazardous  material  through the air,  soil,  surface
     water, groundwater or property.

          "Second Option Agreement" has the meaning ascribed to in the recitals.

          "Services" has the meaning ascribed to that term in Section 2.1.

          "System  Interruptible  Gas Supply" means a type of natural gas supply
     that will be interrupted  whenever its continued  delivery would  adversely
     impact the delivery of gas to the gas customers served by the KeySpan's gas
     transmission or distribution system; furthermore, if Operator is using non-
     KeySpan assets to provide  natural gas to the Plant,  such gas will only be
     interrupted  on KeySpan's gas  distribution  system  whenever its continued
     delivery would adversely  impact the  reliability of such gas  distribution
     system.  If the Plant is using gas provided from KeySpan assets,  the Plant
     will be interrupted before KeySpan's interruptible gas customers consistent
     with current practices. Such gas supplies may also be interrupted for force
     majeure events.


                                       6



          "Term" has the meaning ascribed to that term in Section 8.2.

          "Termination for Convenience" has the meaning ascribed to that term in
     Section 8.4.2.

          "Transitional Labor Costs" mean the annualized labor costs, based upon
     actual  head  count  (and  including,  without  limitation,  all  salaries,
     pensions  and  welfare  benefits  and all other  direct  labor  costs),  of
     personnel  assigned full time to the Plant on the date of a Termination for
     Convenience  pursuant to Section 8.4.2,  who are no longer required for the
     operation  and  maintenance  of the  Plant  due to a  termination  of  this
     Agreement,  either with respect to the Plant or a discrete generating unit,
     under Section 8.4.2.

          "Transitional  Labor Cost  Payments" has the meaning  ascribed to that
     term in Section 8.4.2.

          "Utility Services" means electric, telephone, potable water, municipal
     water,  sewage and other  utility  services  required by  Operator  for the
     provision of Services.

          "Variable  Charge"  means (i) for the period from the  Effective  Date
     through December 31, 2008,  90(cent) per net MWh produced by the Plant, and
     (ii) for any period beginning after December 31, 2008, an amount per MWh to
     be agreed by the parties based upon  Operator's  variable  costs to provide
     the Services.  If the parties do not agree on a new Variable Charge for the
     periods  after  December 31, 2008,  then such dispute  shall be resolved in
     accordance with Article 6.

          "Variable Charge Cap" has the meaning ascribed to that term in Section
     7.4.

          "Variable  Charge  Excess"  has the  meaning  ascribed to that term in
     Section 7.4.

          "Variable  Charge  Payment  " means an  amount  equal to the  Variable
     Charge multiplied by the net MWh produced by the Plant.

                                    ARTICLE 2

                               OPERATOR'S SERVICES

     2.1.  Scope of Services.  Except as provided in Article 3,  Operator  shall
provide, or cause to be provided, all services necessary to operate and maintain
the Plant in  accordance  with the services  described in this Article 2 and the
other  requirements  set  forth  in this  Agreement  (the  "Services").  Without
limiting the generality of the foregoing,  and subject to the  requirements  set
forth in Section 2.1.2,  Operator shall perform,  or cause to be performed,  the
following Services for the Owner:

          2.1.1. Services to be Provided by Operator.  During the Term, Operator
     shall have the responsibility to:


                                       7




          (a)  provide Fuel management services as set forth in Appendix D;

          (b)  develop,   implement  and  update  as  necessary   site  specific
               Operations   and   Maintenance   Procedures   and  a   Preventive
               Maintenance Program;

          (c)  implement a Computerized Maintenance Management System;

          (d)  perform routine repairs on any failed or malfunctioning equipment
               comprising part of the Plant;

          (e)  schedule,  procure and manage major maintenance  services for the
               Plant;

          (f)  identify the need for goods and services  providers (which may be
               affiliates  of the  Operator)  with respect to the  operation and
               maintenance of the Plant and schedule,  arrange for, procure, and
               coordinate the receipt of such goods and services;

          (g)  purchase,   receive  and  expedite,   as  necessary,   chemicals,
               lubricants,  consumables,  operating  and  maintenance  supplies,
               vehicles,  spare  parts,  safety  supplies,  tools and  equipment
               required to operate and maintain the Plant;

          (h)  maintain an  inventory of spare  parts,  materials,  supplies and
               tools  necessary to operate and maintain the Plant,  and purchase
               replacement inventory as required;

          (i)  provide periodic technical,  administrative and financial reports
               to Owner as required  with respect to the Plant,  including  such
               reports as required by regulatory agencies;

          (j)  maintain  required  technical  and  administrative  records  with
               respect to the Plant;

          (k)  establish  and  maintain a technical  library with respect to the
               Plant;

          (l)  make  recommendations  to  Owner  for  capital  improvements  and
               changes  to the  Plant as part of the  Annual  Capital  Budget as
               provided in Article 4 (it being  acknowledged and agreed, for the
               avoidance  of doubt,  that the  Services  shall not  include  the
               making of any  capital  improvements  or  changes  to the  Plant,
               except as Owner and  Operator  may  mutually  agree  from time to
               time); and

          (m)  provide  assistance to Owner in the  preparation of insurance and
               warranty  claims,  preparation of reports required to comply with
               Environmental  Laws,  regulations  or  Permits,  and  such  other
               matters relating to the operation and maintenance of the Plant as
               Owner may reasonably require.

          2.1.2.  General  Service  Requirements.  In  providing  the  Services,
     Operator shall:


                                       8



          (a)  comply with,  to the extent  applicable  and necessary to provide
               the Services,  (i) all  Applicable  Laws,  (ii) Prudent  Electric
               Production Practices, (iii) all insurance requirements applicable
               to the Plant,  (iv) any warranty  obligations  applicable  to the
               Plant,   (v)  vendor   manuals  and   manufacturer's   guidelines
               applicable  to the  Plant or, in  Operator's  opinion  and to the
               extent they comply with Prudent  Electric  Production  Practices,
               Operator's current practice,  (vi) O&M Manuals approved by Owner,
               and (vii)  NYISO  dispatch  directions;  provided,  however  that
               Operator shall be excused from such  compliance with the previous
               clauses (i) through (vii) if the reason for non-compliance arises
               from (A) any act or omission by Operator to the extent  necessary
               to respond to any  Emergency;  or (B) any  budgetary  limitations
               imposed  by Owner  pursuant  to  Article  4; or (C) as  otherwise
               expressly set forth in this Agreement.

          (b)  administer all matters  pertaining to labor relations,  salaries,
               wages,  working  conditions,   hours  of  work,   termination  of
               employment,  employee  benefits,  safety, and all other personnel
               matters; and

          (c)  provide accounting,  bookkeeping,  and administrative services in
               connection with costs under the Annual Capital Budget;

     2.2. Minimum Loadings Ramp Rate,  Start-Up Times and Minimum Scheduled Shut
Down. In providing the Services,  the Operator  shall not be required to operate
the Plant outside of the specifications for the Plant set forth in Appendix E of
the Power Supply Agreement  (which Appendix is hereby  incorporated by reference
herein) with respect to Minimum Loadings,  Ramp Rate, Start-Up Times and Minimum
Scheduled Shut Down.

     2.3. Plant Document Preparation.

          2.3.1. O&M Procedures. Operator shall develop, implement and update as
     necessary  Plant-specific  procedures as Operator  deems to be necessary or
     appropriate  for the safe and  efficient  operation of the Plant during the
     Term (the "O&M  Procedures"),  which O&M  Procedures  shall be  subject  to
     Owner's  review and  approval,  which  approval  shall not be  unreasonably
     withheld or delayed.

          2.3.2.   Preventive  Maintenance  Program.   Operator  shall  develop,
     implement and update as necessary a Plant-specific program for preventative
     maintenance (the "Preventive Maintenance Program"),  which program shall be
     subject  to  Owner's  review  and  approval,  which  approval  shall not be
     unreasonably withheld or delayed.

          2.3.3.  Administrative  Procedures  Manual.  Operator  shall  develop,
     implement  and update as necessary a manual for  administrative  procedures
     with  respect to the  Plant's  operation  (the  "Administrative  Procedures
     Manual"),  which  Administrative  Procedures  Manual  shall be  subject  to
     Owner's  review and  approval,  which  approval  shall not be  unreasonably
     withheld or delayed.

     2.4. Plant Staffing.  Operator shall provide  adequate  numbers of properly
qualified,  trained and, where required,  licensed personnel for the performance
of the Services.


                                       9



                                    ARTICLE 3

                             OWNER RESPONSIBILITIES

     3.1.  General.  At Owner's  sole cost and expense,  Owner shall  furnish to
Operator the information,  data, reports, services, materials and other items as
provided in this Article 3. Owner shall make such items  available at such times
and in such a manner as may be reasonably required by Operator.

     3.2. Information.  Owner shall provide to Operator copies of all agreements
related to the Plant and any amendments thereto or replacements thereof, as well
as technical,  operational and other information, all as reasonably available to
Owner  or in  Owner's  possession  and  necessary  for  the  performance  of the
Services.  Subject to the standards of  performance  set forth in Section 2.1.2,
and unless Owner  obtained such  documents and  information  from Operator or an
Affiliate of Operator,  Operator shall be entitled to rely upon such information
in its performance of the Services.

     3.3. Site Access and Facilities.  Owner shall arrange for Operator to have:
(i) continuous road access to the Plant,  (ii) adequate  parking  facilities for
all Operator  personnel,  including its  contractors and  subcontractors;  (iii)
access  to  the  Plant  and  all  systems,   interconnections,   equipment   and
appurtenances of the Plant;  and (iv) suitable office,  warehouse and laboratory
space, and maintenance shop facilities.  Operator hereby  acknowledges  that the
facilities at the Plant site as of the Effective  Date satisfy the  requirements
of the preceding sentence.

     3.4.  Permits.  Except for Permits that must be obtained by Operator  under
Applicable Law, Operator on behalf of Owner shall obtain or cause to be obtained
all Permits, including the renewal, revision or modification of such Permits, as
may be necessary  to  authorize  Operator to engage in the business of operating
and maintaining electric generation  facilities.  Operator shall comply with all
terms and conditions of such Permits.

     3.5. Other Services.  Owner shall be responsible for the Excluded  Services
as set forth in Appendix A.

                                    ARTICLE 4

                     BUDGET PREPARATION, REVIEW AND ADOPTION

     4.1. Annual Capital Budget  Preparation.  No later than September 1 of each
Calendar  Year,  Operator  will submit for Owner's  approval a written  proposed
budget for capital  expenditures with respect to the Plant for the next Calendar
Year and each of the four (4) succeeding Calendar Years.

     4.2. Annual Capital Budget Review.  Within 30 days of receipt of Operator's
proposed capital expenditure budget,  Owner shall review the proposed budget and
return it to Operator  with such changes,  additions,  deletions or revisions as
Owner  shall  require.  The budget as returned to Operator by Owner shall be the
"Annual Capital Budget" for the applicable Calendar Years.


                                       10





                                    ARTICLE 5

                    BILLING DATA AND OTHER OPERATING REPORTS

     5.1. Reports.

          5.1.1.  Monthly  Reports.  On the 15th  Business Day of each  calendar
     month following the Effective Date, Operator shall submit to Owner a report
     summarizing,  for  the  prior  calendar  month,  the  electric  generation,
     availability,  heat  rate  and Fuel  consumption  (each  on a  monthly  and
     year-to-date  basis),  major  equipment  trips  or  failures,  procurement,
     capital improvements,  labor relations, training activities, safety issues,
     significant   interactions  with  governmental   authorities,   significant
     environmental  and  permit  issues  including  any  notices  of  violation,
     significant operating problems along with remedial actions planned, a brief
     summary of major activities  planned for the next two reporting periods and
     other  material data in connection  with the Plant  operation for the prior
     calendar month. Such reports shall be in a format reasonably  acceptable to
     Owner.

          5.1.2.  Quarterly  Reports.  On the 20th Business Day  following  each
     quarter  following the  Effective  Date,  Operator  shall submit to Owner a
     report  summarizing  for such  prior  quarter  (i)  Annual  Capital  Budget
     performance,  and various  explanations  thereof, and other material Annual
     Capital Budget data in connection with the Plant and (ii) the progress with
     respect to scheduled  maintenance under the Preventive  Maintenance Program
     (the "Quarterly Report").

     5.2. Notice from Judicial/Governmental Authorities. Promptly upon obtaining
knowledge thereof,  each party shall submit to the other party written notice of
and  copies of any  relevant  documents  in the  submitting  party's  possession
relating to: (i) any litigation,  claims, disputes or actions actually filed, or
any  material  litigation,  claims,  disputes or actions  which are  threatened,
concerning in each case Owner,  Operator,  the Plant, or the Services;  (ii) any
actual  refusal to grant,  renew or extend,  or any action pending or any action
filed with respect to, the  granting,  renewal or extension of any Permit or any
material  threatened  action  regarding  the same;  (iii) any  dispute  with any
Governmental  Authority which may have a material adverse effect on the business
or affairs of Owner or Operator,  or Plant  operation or  maintenance;  and (iv)
without  regard to their  materiality,  all  penalties  or notices of  violation
issued by any Governmental Authority.

     5.3.  Government  Reports.  Any material reports relating to the Plant that
are prepared by Operator for submittal to any Governmental Authority shall first
be furnished to Owner for Owner's review and approval within a reasonable period
of time prior to such submission;  provided,  that if necessary to comply with a
prompt  filing  deadline,  Operator  shall  give  Owner  only  such  notice  and
opportunity to review as is reasonably practicable under the circumstances.  Any
Owner approval  shall not be  unreasonably  withheld or delayed.  Operator shall
provide to Owner a copy of all reports  relating to the Plant prepared by it for
submittal to any Governmental Authority concurrently with such submittal.


                                       11



     5.4.  Other  Information.  Upon Owner's  reasonable (as to time and format)
request,   Operator  shall  submit  to  Owner  any  other  material  information
reasonably  available to Operator concerning the Plant or the Services performed
by Operator.

                                    ARTICLE 6

                               DISPUTE RESOLUTION

     6.1.  General.  Any  Dispute  shall  be  resolved  in  accordance  with the
procedures  specified  below,  which  shall  constitute  the sole and  exclusive
procedures for the resolution of any Disputes.

     6.2.  Negotiation.  The parties may attempt to resolve any Dispute promptly
by appointing a senior executive of each party to attempt to mutually agree upon
a resolution.  Any party may give the other party written  notice of any Dispute
not resolved in the normal course of business.  Within 5 days after  delivery of
the notice,  the receiving  party shall submit to the other a written  response.
The notice and response  shall include (a) a statement of that party's  position
and a summary of arguments supporting that position,  and (b) the name and title
of the executive who will  represent that party and of any other person who will
accompany the executive.  Within 10 days after  delivery of the initial  notice,
the persons  representing  the parties shall meet at a mutually  acceptable time
and place, and thereafter as often as they reasonably deem necessary, to attempt
to resolve the Dispute.  The parties shall endeavor to complete the  negotiation
process  within 20 days  after  the  delivery  of the  negotiation  notice.  All
negotiations  pursuant to this clause shall be confidential and shall be treated
as compromise settlement negotiations which shall not be used by either party as
evidence in any mediation,  arbitration or court proceeding. The parties are not
required to undertake  negotiation of any Dispute prior to commencing  mediation
or  arbitration  pursuant  to Section 6.4 or Section  6.5  respectively  and may
commence  mediation or arbitration at any time during the course of negotiation.
If a party commences mediation or arbitration pursuant to Section 6.4 or Section
6.5  respectively,  any previously  commenced  negotiation  shall be immediately
terminated,   without  any  penalty  or  prejudice   to  the  party   commencing
negotiation.

     6.3. Dispute Resolution Following Negotiation.  If the Dispute has not been
resolved by negotiation as provided herein,  either party may commence mediation
or arbitration pursuant to Sections 6.4 or Section 6.5 respectively. The parties
are not  required to  undertake  mediation  of any Dispute  prior to  commencing
arbitration  pursuant to Section 6.5 and a party may commence arbitration at any
time during the course of mediation.  If a party commences  arbitration pursuant
to  Section  6.5,  any  previously  commenced  mediation  shall  be  immediately
terminated,   without  any  penalty  or  prejudice   to  the  party   commencing
arbitration.

     6.4. Mediation.  Either party may refer for mediation, by written notice to
mediate,  any Dispute not resolved by the  negotiations  provided for in Section
6.2.  The  mediation  shall be conducted in  accordance  with the CPR  Mediation
Procedures  then  currently  in  effect,  to  the  extent  such  procedures  are
consistent with the Agreement. The parties shall mutually agree on the selection


                                       12



of a  mediator,  who  may,  but is not  required  to,  be on a list  of  neutral
mediators  published by the CPR. If the parties are unable to reach agreement on
the  selection  of a  mediator  within 5 days  after  delivery  of the notice to
mediate,  the parties shall follow the CPR  procedures for selecting a mediator.
The parties  shall  endeavor to complete the  mediation  process  within 20 days
after the delivery of the mediation notice.

     6.5. Arbitration. Any Dispute which has not been resolved by negotiation as
provided  in Section  6.2 or by  mediation  as  provided in Section 6.4 shall be
settled  by  binding   arbitration   in  accordance   with  the  CPR  Rules  for
Non-Administered  Arbitrations ("CPR Rules") then currently in effect, except to
the extent such rules are inconsistent  with any provision of the Agreement,  in
which case the  provisions of the Agreement  shall be followed.  An  arbitration
shall be commenced by written notice to the other party  containing  information
regarding  the Dispute as set forth in Section  6.2.  The  arbitration  shall be
conducted by three arbitrators (the "Arbitrators").  The Owner designates [name]
as its  arbitrator  or,  in the  event  [name]  is  unavailable,  [name]  as its
alternate  arbitrator.  The Operator  designates [name] as its arbitrator or, in
the event [name] is  unavailable,  [name] as its  alternate  arbitrator.  In the
event that a party's  designee is no longer able or is  unwilling to serve as an
arbitrator  for a  Dispute,  a party may  appoint a  substitute  or  replacement
arbitrator  and shall  promptly  notify the other party  thereof.  The  parties'
designated  arbitrators  are  hereinafter  referred  to as the "Party  Appointed
Arbitrators."  The Party  Appointed  Arbitrators,  within two  business  days of
receiving a notice of arbitration  will select a third arbitrator (the "Chair"),
who will be one of the following  individuals:  [names].  The Chair shall be the
chairperson of the panel.  In the event that any one of these  individuals is no
longer  able or is  unwilling  to  continue  to serve as the  Chair,  the  Party
Appointed  Arbitrators will confer and agree on a replacement  arbitrator within
three  Business  Days. In the event no such  agreement  can be reached,  the CPR
procedures shall govern the appointment of the Chair.

     6.6.  Provisional  Relief.  Either  party  may,  without  prejudice  to any
negotiation, mediation, or arbitration procedures, proceed in the New York State
Supreme Court,  Nassau County, to obtain provisional  judicial relief if, in the
such  party's  sole  discretion,  such  action is  necessary  to avoid  imminent
irreparable harm, to provide uninterrupted  electrical and other services, or to
preserve  the  status quo  pending  the  conclusion  of the  Dispute  procedures
specified herein. For purposes of the foregoing,  Owner and Operator each hereby
agrees to submit to the  jurisdiction  of such court and, to the maximum  extent
permitted  by law,  waives any right to object to the  bringing  of an action in
such  court on  ground of lack of venue or that  such  court is an  inconvenient
forum.

     6.7.  Information  Exchange.  The Arbitrators  shall have the discretion to
order a prehearing  exchange of information by the parties,  including,  without
limitation,   production  of  requested  documents,   the  exchange  of  witness
statements of proposed witnesses,  and the examination by deposition of parties.
The parties  hereby agree timely to produce all such  information  as ordered by
the Arbitrators.

     6.8. Site of Arbitration.  The site of any Arbitration  brought pursuant to
the Agreement shall be either Mineola, New York or Hauppauge,  New York, or such
other site as the parties may agree.


                                       13



     6.9.  Awards.  The  Arbitrators  shall have no authority to award  punitive
damages or any other damages aside from the  prevailing  party's  direct damages
plus  interest  at the Default  Interest  Rate from the date such  damages  were
incurred.  The Arbitrators may award reasonable attorneys' fees and costs of the
arbitration. The arbitration shall be governed by the Federal Arbitration Act, 9
U.S.C.  ss.ss.1-16  (the  "FAA"),  and judgment  upon the award  rendered by the
Arbitrators may be entered by any court having jurisdiction thereof.

     6.10.  Grounds for Judicial Review.  Any award made by the Arbitrators with
respect to any Dispute  pursuant to these dispute  resolution  procedures may be
vacated,  modified or corrected by a court only on the grounds  permitted  under
the provisions of Sections 10 and 11 of the FAA.

     6.11. No Interruption.  The pendency of these Dispute resolution procedures
shall not in and of itself  relieve  either party from its duty to perform under
this  Agreement or serve to delay or suspend the operation of the Project or the
performance of the Services hereunder.

                                    ARTICLE 7

                            COMPENSATION AND PAYMENT

     Owner shall pay  Operator  for the  Services in the manner and at the times
specified in this Article 7.

     7.1. Monthly  Invoices.  Operator shall prepare and submit monthly invoices
to Owner no later than  fifteen  (15) days  following  the end of each  calendar
month for payments due hereunder, which will include charges for (i) the monthly
Allocated  Fixed O&M Cost  Payment  (ii)  subject to Section  7.4,  the  monthly
Variable  Charge  Payment,  and (iii) the monthly portion of the Fuel Management
Fee for such  month as  described  in Section  7.2.  Operator  shall  supply any
supporting  documentation  for the  invoice  as Owner  may  reasonably  request.
Subject to Owner's  right to conduct an audit  pursuant  to Section  7.3,  Owner
shall pay such invoices within ten (10) days following the receipt of Operator's
invoice.  Any amounts due but unpaid by Owner to Operator hereunder shall accrue
interest at the  Default  Interest  Rate from the date due until  paid.  Payment
shall  be made of all  amounts  owed by  Owner  to  Operator  hereunder  by wire
transfer,  or by other mutually agreeable  method(s) to an account designated by
Operator.

     7.2.  Fuel  Management  Fee. The Owner shall pay Operator a management  fee
(the "Fuel Management Fee") commencing in the first month of the Effective Date.
The  Fuel  Management  Fee  will  be  $25,000  per  year,   payable  in  monthly
installments  of $2,083.  [The Fuel  Management  Fee shall be  $25,000  per year
prorated  based upon the fuel BTU's  purchased in the year prior to the exercise
of the Second Option  Agreement  with respect to the Plant.] In addition,  Owner
shall pay Operator for the cost of Fuel and fuel related taxes, as well as third
party fuel related fees and costs  prudently  incurred  consistent with existing
practice under the Energy Management Agreement and Appendix D to this Agreement.

     7.3. Audit. Notwithstanding the payment of any amount under this Agreement,
Owner  shall  remain  entitled to conduct a  subsequent  audit and review of all
costs incurred and paid by Owner pursuant to this  Agreement,  together with any
supporting  documentation  requested  by Owner,  for a period of seven (7) years


                                       14



from and after the date of such payment.  If, pursuant to such audit and review,
it is determined  that any amount  previously paid by Owner did not constitute a
due and payable item pursuant to this  Agreement,  Owner may recover such amount
from  Operator  or deduct or cause to be  deducted  such amount from any payment
that may be due to Operator.

     7.4.  Maximum  Variable  Charge  Payment.  Notwithstanding  anything to the
contrary, the maximum aggregate Variable Charge Payments payable to Operator for
any Calendar Year shall not exceed an amount (the  "Variable  Charge Cap") equal
to twenty  percent  (20%) of the sum of the Allocated  Fixed O&M Cost  Payments,
Variable  Charge  Payments,  and Fuel  Management  Fee paid to Operator for such
Calendar Year. If the payment of the Variable Charge Payment for any month would
cause the sum of all Variable Charge  Payments for the applicable  Calendar Year
to exceed the  Variable  Charge  Cap,  then the  amount  (the  "Variable  Charge
Excess") by which such sum exceeds the Variable  Charge Cap shall not be payable
to  Operator.  Thereafter,  if the sum of all Variable  Charge  Payments for the
applicable  Calendar  Year  actually  paid to Operator is less than the Variable
Charge Cap, then there shall be paid to Operator  with the next monthly  payment
pursuant  to Section  7.1, an amount  equal to the lesser of (i) the  difference
between the sum of all Variable Charge Payments for the applicable Calendar Year
actually paid to Operator (taking into  consideration such month's payments) and
the Variable Charge Cap and (ii) the aggregate Variable Charge Excesses not paid
to Operator  for such  Calendar  Year and any  previous  Calendar  Years (plus a
carrying charge accruing at the Default Rate until such Variable Charge Excesses
are paid).

                                    ARTICLE 8

                              TERM AND TERMINATION

     8.1.  Effective  Date.  This  Agreement  shall become  legally  binding and
effective only upon satisfaction of the following conditions precedent (the date
upon which all such conditions are satisfied, the "Effective Date"):

          (a)  Approvals of this Agreement (reasonably satisfactory to Owner and
               Operator) from the Public  Authorities  Control  Board,  New York
               State Comptroller, and the New York Attorney General (as to form)
               shall have been obtained and be in full force and effect;

          (b)  The closing of the purchase of the Plant under the Second  Option
               Agreement shall have occurred; and

          (c)  Each of the  Power  Supply  Agreement  Amendment  and the  Energy
               Management  Agreement  Amendment  (each as  defined in the Second
               Option  Agreement) shall have become effective in accordance with
               their respective terms.

     8.2. Term. The term of this Agreement  shall commence on the Effective Date
and expire May 28, 2013 unless earlier terminated.


                                       15



     8.3. Termination by Operator.

          8.3.1.  Termination  Rights.  Operator has the right to terminate this
     Agreement without liability if:

          (a)  Owner fails to pay any  undisputed  sum due under this  Agreement
               within 30 days after Owner has  received  notice of such  default
               from Operator;

          (b)  Owner  fails to perform any of its other  obligations  under this
               Agreement  in any  material  respect and such  failure  continues
               after  notice is provided by  Operator  to Owner,  provided  that
               Owner  shall  have  up  to 60  Business  Days  to  cure  or  make
               substantial progress towards curing such default;

          (c)  any  Governmental  Authority  suspends or revokes  any  approvals
               issued  by such  Governmental  Authority  to permit  Operator  to
               perform  its  obligations  under  this  Agreement,  or  otherwise
               prohibits  Operator from  performing its  obligations  under this
               Agreement,   provided   that  such   suspension,   revocation  or
               prohibition, as the case may be, was not the result of Operator's
               negligence  or failure  to comply  with the  requirements  of any
               Applicable Law, Permit or approval; or

          (d)  Owner is Bankrupt;

          8.3.2.  Payment.  In the event of a termination by Operator under this
     Section  8.3,  Owner shall pay  Operator for all amounts due for the period
     prior to such termination.

     8.4. Termination by Owner.

          8.4.1.  Termination  for Cause.  Owner has the right to terminate this
     Agreement for cause without liability if:

          (a)  Operator  fails to  perform  any of its  obligations  under  this
               Agreement  in any  material  respect and such  failure  continues
               after  notice is provided  by Owner to  Operator,  provided  that
               Operator  shall  have  up to 60  Business  Days  to  cure or make
               substantial progress towards curing such default;

          (b)  Operator is Bankrupt;

          (c)  Operator's  total  liability  under  this  Agreement  during  two
               consecutive  Calendar  Years  shall  have  exceeded  its  maximum
               liability  hereunder  for each such  Calendar  Year  pursuant  to
               Section 11.1;

          (d)  the KeySpan  Guaranty  shall be held to be  unenforceable  or the
               Guarantor  shall disavow,  or default in the  performance of, its
               obligations under the KeySpan Guaranty; or


                                       16



          (e)  The  Availability  of the  Plant  in  any  two  consecutive  full
               Calendar  Years is less than ____ percent  (___%) other than as a
               result  of (i) any one or more  events  of  Force  Majeure,  (ii)
               Owner's acting  unreasonably  with respect to the approval of any
               Annual  Capital  Budget,  (iii) the  failure  of Owner to pay for
               expenses  included in any Annual  Capital  Budget or otherwise to
               cause or permit to be made any capital  improvement  or change to
               the Plant  included in any Annual  Capital Budget on the schedule
               provided  therein or (iv) any  negligent act or omission of Owner
               or any of Owner's contractors, subcontractors, agents or invitees
               (other than Operator and any of its contractors,  subcontractors,
               agents and invitees).  [Specify 85% for Shoreham  Plant;  85% for
               Wading River Plant]

          8.4.2.  Termination for Convenience.  Owner has the right, by not less
     than 30 days prior written notice to Operator,  to terminate this Agreement
     with  respect to the Plant (or with respect to a discrete  generating  unit
     thereof) for convenience (a "Termination for Convenience") in the event of:

          (a)  The Plant's or such unit's, as the case may be, retirement; or

          (b)  The  Plant's  or such  unit's,  as the case may be,  shutdown  in
               connection with a repowering.

               In the event of a  termination  pursuant to this  Section  8.4.2,
               Operator shall be entitled,  in addition to all other amounts due
               to it hereunder as of the date of termination,  monthly  payments
               (the "Transitional  Labor Cost Payments") equal to the product of
               (i) one twelfth (1/12) of the Transitional Labor Costs times (ii)
               the  applicable  percentage  set forth in table below.  Beginning
               with the next  succeeding  month  following a  termination  under
               Section 8.4.2,  Owner shall make Transitional Labor Cost Payments
               to  Operator  on the  fifteenth  (15th) of each  month  until the
               earlier to occur of (a)  Owner's  having  made  forty  eight (48)
               Transitional Labor Cost Payments or (b) May 28, 2013.

                     Transitional Labor Cost                      Percentage
                             Payment
                             (Month)

                             1 to 12                                  100%
                             13 to 24                                  75%
                             25 to 36                                  50%
                             37 to 48                                  25%


                                       17



     8.5.  Plant  Condition  at End of Term.  Upon  the  expiration  or  earlier
termination of this Agreement, Operator shall remove its personnel and equipment
from the Plant in an orderly fashion. All special tools, improvements, inventory
of supplies, spare parts, safety equipment, O&M Manuals, documentation,  whether
or not marked as  confidential  or  proprietary  in  accordance  with Article 13
hereof (in each case as provided to, obtained by or provided by, and as modified
by  Operator  pursuant  to this  Agreement  during the Term) and any other items
furnished  by or on behalf of Operator  and paid for by Owner will remain at the
Plant and will  remain or become the  property of Owner  without any  additional
charge.  Owner shall also have the right,  in its sole  discretion,  to directly
assume any  contracts  entered  into by or  obligations  of  Operator  solely in
connection  with the Services,  provided Owner also assumes sole liability under
such  contracts.  Operator  shall  execute  all  documents  and take  all  other
reasonable  steps  requested by Owner that are required to assign to and vest in
Owner  all  rights,  benefits,  interests  and  title in  connection  with  such
contracts or obligations and release Operator from same; provided, however, that
Owner shall  indemnify and hold  harmless  Operator from and against any and all
liabilities  arising  thereunder  after  the  date of any  such  assumption  and
release.  Prior to the effective date of such expiration or earlier termination,
Operator shall reasonably cooperate with Owner regarding the transition to a new
operator.  If Owner  requests  Operator to continue to provide  such  transition
cooperation after the effective date of such expiration or earlier  termination,
Operator shall provide such transition  cooperation  for a reasonable  period of
time and Owner  shall  reimburse  Operator  for all costs  incurred  during such
transition period.

                                    ARTICLE 9

                                    INSURANCE

     9.1. Operator Insurance Coverage.  Throughout the Term, except as otherwise
required  herein,  Operator  shall at its own cost,  procure and maintain,  with
insurers  having  an  A.M.  Best  policyholders'  rating  of "A" or  better,  or
self-insure in accordance with the requirements  made herein the following kinds
and amounts of insurance:

          9.1.1. Plant Liability  Insurance.  (A) Such insurance as will protect
     Operator  from  claims  which may arise out of or result  from  services of
     Operator as more fully described in this  Agreement,  whether such services
     be by the Operator or by a contractor  or by anyone  directly or indirectly
     employed  by any of them,  or by anyone  for whose  acts any of them may be
     liable,  claims for bodily  injury and property  damage of the kind usually
     and customarily  insured in a policy of: (i) commercial  general  liability
     insurance,  including  at a minimum,  coverage for  contractual  liability,
     products  and  completed  operations  liability,   and  (ii)  pollution  or
     environmental  legal liability insurance as an extension of (i) above or in
     a separate policy providing at the minimum sudden and accidental  pollution
     liability,  and (iii) automobile  liability insurance covering all vehicles
     owned,  operated,  used, or the responsibility of Operator and (B) All Risk
     Property  Insurance for the full replacement value of the Plant, with Owner
     named as the named  insured.  Operator shall cause Owner and its Affiliates
     with  the   employees,   agents,   officers,   directors,   trustees,   and
     representatives of each to be named as additional  insureds on the policies
     described  in (i),  (ii) and (iii) of clause  (A) above,  with each  policy
     having a combined  single  limit of not less than  $25,000,000.00  for each
     occurrence  (all  insurance  set forth in (i), (ii) and (iii) of clause (A)
     above  are  collectively  referred  to  as  "Plant  Liability  Insurance").
     Notwithstanding  anything to the  contrary in this Section 9.1 or any other
     provision  hereof,  Owner  shall  pay or  reimburse  Operator  for  Owner's


                                       18



     proportionate  share of all  incremental  costs  incurred by Operator  with
     respect  to the  Plant  Liability  Insurance,  or  the  All  Risk  Property
     Insurance  referred to above,  as a result of the  transfer to Owner of the
     Plant and its ownership thereof.

          9.1.2. Workers  Compensation and Employers Liability  Insurance.  Such
     insurance as will  protect  Operator  from claims by  employees  for bodily
     injury and occupational  disease:  (i) as required by the state of New York
     and any other applicable state or governmental authority and (ii) employers
     liability of not less than $25,000,000.00.

          9.1.3. General Insurance  Provisions.  The insurance  requirements set
     forth herein are to fully protect Owner and its Affiliates from any and all
     claims by  third-parties,  including  employees  of Operator or its agents,
     subcontractors or employees and shall provide the following:

          (a)  Operator  Insurance  is Primary.  The Plant  Liability  Insurance
               shall  apply as  primary  insurance  with  respect to any and all
               other  insurance  or   self-insurance   programs  carried  by  or
               maintained by Owner or its Affiliates.

          (b)  Evidence of Coverage. Operator shall, prior to the Effective Date
               of this Agreement, and within five (5) days after each request by
               Owner,  provide  certificates  of insurance to Owner's  insurance
               consultant evidencing all insurance policies, and if requested by
               Owner  or  Owner's  insurance  consultant,  a true,  correct  and
               complete copy of all such insurance  policies,  required pursuant
               to  this  Section  9.1.  If  the  Plant  Liability  Insurance  is
               available only on a claims-made basis, then the dates of coverage
               (including  the  retroactive  date)  will  be so  stated  on  the
               certificate of insurance.

          (c)  Waiver  of  Subrogation.  Owner and any  other  party  reasonably
               requested by Owner shall be granted waivers of subrogation by all
               insurers  providing  coverage  to  Operator  whether  or not such
               insurance policies are maintained pursuant to the requirements of
               this  Section  9.1 of the  Agreement,  including  any  amendments
               thereto, or otherwise.

          (d)  Severability of Insureds.  All policies  required in this Section
               9.1 shall  provide that (i)  inclusion of more that one person or
               organization as insured hereunder shall not in any way affect the
               rights of any such person or  organization as respects any claim,
               demand,  suit or judgment  made,  brought or recovered,  by or in
               favor of any other insured,  or by or in favor of any employee of
               such  other  insured,  and (ii) each  person or  organization  is
               protected  thereby in the same manner as though a separate policy
               had been issued to each,  but nothing  therein  shall  operate to
               increase the insurance company's liability as set forth elsewhere
               in the policy beyond the amount for which the  insurance  company
               would have been  liable if only one person or  interest  had been
               named as insured.


                                       19



          (e)  Notice of Cancellation. All policies required in this Section 9.1
               may not be  cancelled or  materially  altered  without  giving at
               least thirty (30) days (or ten (10) days if such  cancellation is
               due to a  failure  to  pay  premiums)  prior  written  notice  of
               cancellation to Owner.

          (f)  Deductibles.  Any and all  deductible or retention  amounts under
               policies  provided by Operator pursuant to this Section 9.1 shall
               be  assumed  by,  for the  account  of,  and at the sole  risk of
               Operator.

          (g)  Claims Made Policies. When the insurance policies required herein
               are issued on a "claims  made" or "claims  first made" form,  the
               retroactive date shall be on or before the Effective Date of this
               Agreement and such policies must be maintained for a period of at
               least five (5) years after Termination of this Agreement or shall
               be specifically endorsed to provide that claims made for at least
               five (5) years after the event or  occurrence  giving rise to the
               claim will be covered.

          9.1.4.   Operator  Disclosure  and  Cooperation.   Where  Operator  is
     providing  insurance coverage for benefit of Owner,  procuring insurance at
     request  of  Owner,  and/or  securing  coverage  at the  expense  of Owner,
     Operator  shall make complete and timely  disclosure of all  information as
     may be requested from time to time by Owner and provide full cooperation in
     securing such coverages as may be requested by Owner.  Such  disclosure and
     cooperation  shall include,  without limit, an exact copy of the applicable
     insurance policy wording, premium calculation, rating structure, disclosure
     of No Claims Bonuses and/or profit  sharing,  information  regarding  cargo
     shipments  and  related  surveys,  fees or  commissions  paid to brokers or
     consultants,  and/or other fees or expenses  which may be incurred by Owner
     in conjunction  with the procurement of said  insurance.  In the event that
     any Plant Liability Insurance policy or the coverage extended thereunder to
     Owner or  Owner's  Affiliates  is not  renewed  or is  canceled  and is not
     replaced by Operator or its Affiliates  with insurance  policies  providing
     comparable  coverage thereto, or if the Plant Liability Insurance policies,
     in Owner's or Owner's Affiliates' reasonable judgment, undergo any material
     change  such that the  coverage  afforded  thereunder  is not  commercially
     reasonable,  Owner and its Affiliates may secure separate general liability
     insurance   policies  and/or  pollution  legal  liability  policies  and/or
     automobile liability policies to provide comparable commercially reasonable
     insurance  coverage and Operator shall  reimburse Owner and its Affiliates,
     as the case may be, for the Operator's  proportionate share of the premiums
     paid by Owner and its Affiliates, as the case may be, for such insurance.

     9.2. Owner  Insurance  Coverage.  Throughout the Term,  Owner shall, at its
cost,  maintain  third party  liability  insurance  similar to that  required of
Operator and workers compensation insurance for its employees.

     9.3.  Self-Insurance,  etc.  Operator and Owner may carry such self insured
retentions,  deductibles,  or may  self-insure  any of the above Plant Liability
Insurance,  All Risk Property Insurance,  and Worker's Compensation insurance to
the extent that it is doing so on the Effective  Date or to such greater  extent
as may be approved in writing by Owner. Nothing in this Article 9 is intended to
nor shall it relieve  Owner or Operator of any of their  respective  obligations
and  liabilities  under  this  Agreement  including,  but not  limited  to,  the
indemnification obligations set forth in Article 10 below.


                                       20



                                   ARTICLE 10

                                 INDEMNIFICATION

     10.1.  Indemnification  of  Owner.  Operator  agrees  that  to  the  extent
permitted by law it will  protect,  indemnify  and hold  harmless  Owner and its
Affiliates and their respective representatives,  trustees, directors, officers,
employees and subcontractors (as applicable in the  circumstances),  (the "Owner
Indemnified  Parties")  from  and  against  (and  pay the  full  amount  of) any
Loss-and-Expense  and will  defend  the Owner  Indemnified  Parties in any suit,
including  appeals,  for personal injury to, or death of, any person, or loss or
damage  to  property  arising  out  of:  (a) the  gross  negligence  or  willful
misconduct of Operator;  (b) a violation of law by Operator which materially and
adversely  affects  (i) the  condition  or  operations  of the  Plant,  (ii) the
financial  condition of Owner,  (iii) the  performance or ability of Operator to
perform  its  obligations  under this  Agreement  or (iv) the cost of  providing
electric  service to the customers of the Plant (in each case other than for any
violation  of  environmental  Law for which  Owner or  Operator  may be strictly
liable  provided  Operator acted in a manner  consistent  with Prudent  Electric
Production Practices), or (c) a criminal violation of Law by Operator.  Operator
shall not, however,  be required to reimburse or indemnify any Owner Indemnified
Party for any Loss-and-Expense to the extent any such Loss-and-Expense is due to
(a) any matter for which Owner is  responsible  under Article 3 hereof,  (b) the
negligence or other wrongful  conduct of any Owner  Indemnified  Party,  (c) any
event of Force Majeure,  (d) any act or omission of any Owner  Indemnified Party
judicially   determined  to  be   responsible   for  or   contributing   to  the
Loss-and-Expense,  or (e) any  matter  for which the risk has been  specifically
allocated to the Owner  hereunder.  An Owner  Indemnified  Party shall  promptly
notify  Operator  of the  assertion  of any  claim  against  it for  which it is
entitled to be  indemnified  hereunder,  shall give Operator the  opportunity to
defend  such  claim,  and shall not settle the claim  without  the  approval  of
Operator.  Operator  shall be entitled to control the handling of any such claim
and to defend or settle any such claim, in its sole discretion,  with counsel of
its own choosing that is reasonably acceptable to the Owner Indemnified Parties;
provided,  however,  that, in the case of any such  settlement,  Operator  shall
obtain written  release of all liability of the Owner  Indemnified  Parties,  in
form and  substance  reasonably  acceptable  to the Owner  Indemnified  Parties.
Notwithstanding the foregoing, each Owner Indemnified Party shall have the right
to employ its own separate  counsel in connection  with,  and to  participate in
(but, except as provided below, not control) the defense of, such claim, but the
fees and  expenses  of such  counsel  incurred  after  notice to Operator of its
assumption  of the  defense  thereof  shall  be at the  expense  of  such  Owner
Indemnified Party unless:

          (i)  the  employment  of counsel by such Owner  Indemnified  Party has
               been authorized by the Operator;

          (ii) counsel to such Owner  Indemnified  Party  shall have  reasonably
               concluded that there may be a conflict on any  significant  issue
               between Operator and such Owner  Indemnified Party in the conduct
               of the defense of such claim; or


                                       21



          (iii) Operator  shall not in fact  have  employed  counsel  reasonably
               acceptable to the Owner  Indemnified  Party to assume the defense
               of such claim within  twenty (20) days  following  the receipt by
               Operator of the notice from the Owner Indemnified Party regarding
               the assertion of the applicable claim,

in each of  which  cases  the fees  and  expenses  of  counsel  for  such  Owner
Indemnified Party shall be at the expense of Operator;  provided, however, that,
with respect to clauses (ii) and (iii) of this  sentence,  Operator shall not be
obligated  to pay the fees and  expenses  of more than one law firm,  plus local
counsel  if  necessary  in  each  relevant  jurisdiction,  for  all  such  Owner
Indemnified Parties with respect to any claims arising out of the same events or
facts or the same series of events or facts. The Operator shall not be entitled,
without the consent of such Owner  Indemnified  Party,  to assume or control the
defense of any claim as to which counsel to such Owner  Indemnified  Party shall
have  reasonably  made  the  conclusion  that  there  may be a  conflict  on any
significant  issue  between  Operator  and such Owner  Indemnified  Party in the
conduct of the defense of such claim as set forth in clause (ii) above, provided
that the foregoing  limitation shall apply only with respect to those issues for
which there may be such a conflict. These indemnification provisions are for the
protection of the Owner  Indemnified  Parties only and shall not  establish,  of
themselves,  any liability to third parties. The provisions of this Section 10.1
shall survive termination of this Agreement.

     10.2.  Indemnification  of  Operator.  Owner  agrees  that  to  the  extent
permitted by law, it will protect,  indemnify and hold harmless Operator and its
Affiliates  and  their  respective  officers,   directors,   subcontractors  (as
applicable  in the  circumstances)  and  employees  (the  "Operator  Indemnified
Parties")  from and against  (and pay the full amount of) any  Loss-and-Expense,
and will defend the Operator Indemnified Parties in any suit, including appeals,
for personal  injury to, or death of, any person,  or loss or damage to property
arising out of any matter for which Owner is responsible under Article 3 hereof.
Owner shall not,  however,  be required to reimburse  or indemnify  any Operator
Indemnified   Party   for  any   Loss-and-Expense   to  the   extent   any  such
Loss-and-Expense  is due to (a) any matter  for which  Operator  is  responsible
under  Article 2 hereof or for which  Operator is required  to  indemnify  Owner
under Section 10.1, (b) the negligence or other wrongful conduct of any Operator
Indemnified  Party,  (c) any event of Force Majeure,  (d) any act or omission of
any Operator  Indemnified  Party judicially  determined to be responsible for or
contributing to the  Loss-and-Expense,  or (e) any matter for which the risk has
been specifically allocated to Operator hereunder. An Operator Indemnified Party
shall  promptly  notify Owner of the assertion of any claim against it for which
it is entitled to be indemnified hereunder,  shall give Owner the opportunity to
defend such claim, and shall not settle the claim without the approval of Owner.
Owner shall be entitled to control the  handling of any such claim and to defend
or settle  any such  claim,  in its sole  discretion,  with  counsel  of its own
choosing  that is  reasonably  acceptable  to the  Operator  Indemnified  Party;
provided, however, that, in the case of any such settlement,  Owner shall obtain
written release of all liability of the Operator  Indemnified Party, in form and
substance   reasonably   acceptable   to   the   Operator   Indemnified   Party.
Notwithstanding  the foregoing,  each Operator  Indemnified Party shall have the
right to employ its own separate  counsel in connection with, and to participate
in (but,  except as provided below, not control) the defense of, such claim, but
the fees and  expenses of such  counsel  incurred  after  notice to Owner of its
assumption  of the  defense  thereof  shall be at the  expense of such  Operator
Indemnified Party unless:


                                       22



          (i)  the employment of counsel by such Operator  Indemnified Party has
               been authorized by Owner;

          (ii) counsel to such Operator  Indemnified Party shall have reasonably
               concluded that there may be a conflict on any  significant  issue
               between Owner and such Operator  Indemnified Party in the conduct
               of the defense of such claim; or

          (iii) Owner  shall  not  in  fact  have  employed  counsel  reasonably
               acceptable to the Owner  Indemnified  Party to assume the defense
               of such claim within  twenty (20) days  following  the receipt by
               Owner of the notice from the Operator Indemnified Party regarding
               the assertion of the applicable claim,

in each of which  cases  the fees and  expenses  of  counsel  for such  Operator
Indemnified  Party shall be at the expense of Owner;  provided,  however,  that,
with respect to clause (ii) and clause (iii) of this  sentence,  Owner shall not
be obligated to pay the fees and expenses of more than one law firm,  plus local
counsel  if  necessary  in each  relevant  jurisdiction,  for all such  Operator
Indemnified Parties with respect to any claims arising out of the same events or
facts or the same  series  of  events or  facts.  Owner  shall not be  entitled,
without the consent of such Operator Indemnified Party, to assume or control the
defense of any claim as to which  counsel  to such  Operator  Indemnified  Party
shall have  reasonably  made the conclusion  that there may be a conflict on any
significant  issue  between  Owner and such  Operator  Indemnified  Party in the
conduct of the defense of such claim as set forth in clause (ii) above, provided
that the foregoing  limitation shall apply only with respect to those issues for
which there may be such a conflict. These indemnification provisions are for the
protection of the Operator Indemnified Parties only and shall not establish,  of
themselves,  any liability to third parties. The provisions of this Section 10.2
shall survive termination of this Agreement.

     10.3.  Notice. In the event that a party (the "Indemnified  Party") becomes
aware of any event or  circumstance  which might  entitle it to  indemnification
under this  Article  10, it shall  provide  the other  party (the  "Indemnifying
Party") with written  notification  within the earlier of thirty (30) days after
discovery of such event or  circumstance  or ten (10) Business Days prior to the
time any response is required by law regarding such event or circumstance.

     10.4. Deferral of Dispute Resolution. In the event that a party makes claim
for  indemnification  under this  Article  10 and such  claim is the  subject of
Dispute  Resolution  under  Article  6 of  this  Agreement,  then,  upon  mutual
agreement of the parties,  such Dispute  Resolution may be suspended pending the
resolution of the indemnification claim.

                                   ARTICLE 11

                        GENERAL LIMITATIONS OF LIABILITY

     11.1.  Total  Liability.  Operator's  total  liability  to Owner during any
Calendar  Year  during the Term for all claims of any kind,  whether  based upon
contract obligation, tort liability (including negligence) or otherwise, for any
loss or damage  arising out of,  connected with or resulting from this Agreement
during such each Calendar Year, or from the performance or breach thereof, shall
in no case exceed the Fuel  Management  Fee for such  Calendar  Year;  provided,


                                       23



however,  that the foregoing  limitation of liability shall not apply to damages
resulting  from  Operator's  gross  negligence  or  willful   misconduct  or  to
Operator's  obligation to indemnify Owner against third party claims pursuant to
Article 10.

     11.2.   Consequential  Damages.   Notwithstanding  any  provision  in  this
Agreement to the contrary,  neither party nor any of its respective  Affiliates,
shareholders,  principals,  directors,  trustees,  officers,  employees, agents,
subcontractors  or vendors shall be liable for  consequential or indirect losses
or damages, including loss of profit, cost of replacement for electricity,  cost
of capital, loss of goodwill,  increased operating costs or any other special or
incidental  damages or losses,  damages or  liabilities  under any agreements to
which Owner may be a party  irrespective  of whether  such claims are based upon
warranty, negligence, strict liability, contract, operation of law or otherwise.

     11.3. Owner Actions.  Operator shall not be liable for any claims,  losses,
damages,  costs, expenses,  fines, penalties and liabilities,  including but not
limited to Environmental Claims, arising out of (i) Owner's inability or refusal
to allocate  monies for  capital  expenditures  with  respect to the Plant after
Operator's specific, detailed, request for funds for specified projects pursuant
to  Section  4.1;  (ii)  failure  of Plant  equipment  that is not the result of
Operator's  or  its  agent's  gross  negligence  or  willful  misconduct  in the
operation  and  maintenance  of the Plant;  or (iii)  Operator's  or its agent's
compliance with any instructions or directives provided by Owner.

     11.4.  Survival and Application.  The waivers and disclaimers of liability,
indemnities,  releases from liability, and limitations on liability expressed in
this  Agreement  shall  survive the  expiration or earlier  termination  of this
Agreement  and shall apply at all times,  whether in contract,  equity,  tort or
otherwise,  regardless of the fault,  negligence  (in whole or in part),  strict
liability,  breach of contract  or breach of warranty of the party  indemnified,
released or whose  liabilities are limited,  and shall extend to the Affiliates,
shareholders,  principals, directors, officers and employees, agents and related
or  affiliated  entities  of  such  party,  and  their  Affiliates,  principals,
officers, directors and employees.

                                   ARTICLE 12

                              ENVIRONMENTAL MATTERS

     12.1. Site Conditions.

          12.1.1.  Disclosure.  Owner  agrees  that it will  fully  disclose  to
     Operator all  information,  both written and oral, that becomes known to or
     comes into the  possession of Owner after the  Effective  Date from time to
     time regarding the environmental conditions at the Plant, including any and
     all reports, audits or other correspondence from environmental  consultants
     and/or Governmental Authorities.

     12.2.  Insurance/Indemnification.   Owner  shall  cause  Operator  and  its
Affiliates to be designated as a named insured on any insurance  policy covering
Environmental Claims carried by Owner and its Affiliates.


                                       24



     12.3.  Compliance.  Without limiting the generality of Section 2.1.2 above,
Operator shall comply with all requirements of Environmental Laws, including the
terms and conditions of all Permits issued or obtained under Environmental Laws,
in  connection  with  Operator's  provision of the Services.  Operator  shall be
responsible  for  complying  with all  reporting  obligations  that arise  under
Environmental  Laws in connection with any Emergency or other event or condition
related to the Plant,  including  the  reporting of any release of any Hazardous
Materials.  Owner  shall  indemnify,  defend  and hold  harmless  Operator,  its
shareholders,   Affiliates,   officers,   directors,   employees,   agents   and
representatives  from and against any and all  Environmental  Claims directly or
indirectly  related  to or  arising  out of the  actual  or  alleged  existence,
generation,  use,  collection,  treatment,  storage,  transportation,  recovery,
removal,  discharge  or  disposal of  Hazardous  Materials  at the Plant  and/or
adjacent areas to the Plant,  except for  Environmental  Claims arising directly
out of the  gross  negligence  or  willful  misconduct  of the  Operator  or any
"Environmental  Loss" for  which  Operator  is liable  under  Section  D5,  Fuel
Indemnification  Provisions,  of  Appendix  D (as such term is  defined  in such
appendix).

     12.4.  New Source  Review  Requirements.  Notwithstanding  anything  to the
contrary in this Agreement,  Owner shall bear all  responsibility  and liability
for compliance with all requirements with respect to New Source Review under the
Clean Air Act and any similar provisions of any other Applicable Law, including,
without  limitation  (i)  all  responsibility  and  liability  with  respect  to
decisions  made by the Owner  (and the  consequences  thereof)  about  potential
regulatory   implications  of  routine   repairs,   upgrades,   maintenance  and
modifications  of the Plant and (ii) all  responsibility  and  liability for all
costs, penalties and other Losses and Expenses associated with New Source Review
relating  to the Plant  (whether  from  third-party  claims or  otherwise)  as a
consequence of such decisions (or the consequences thereof).

                                   ARTICLE 13

                                  NONDISCLOSURE

     13.1.  General.  Each party agrees,  to the extent  permitted by Applicable
Law, to hold in confidence any confidential  information  supplied to that party
and designated in writing as confidential by the supplier thereof ("Confidential
Information").  Each  party  further  agrees,  to the  extent  requested  by the
supplier of such information, to require its subcontractors,  vendors, suppliers
and employees to enter into  appropriate  nondisclosure  agreements  relative to
such Confidential  Information,  prior to the receipt thereof. The nondisclosure
obligations  set forth in this Article 13 shall survive for a period of five (5)
years following the expiration or earlier termination of this Agreement.

     13.2.  Exceptions.  The  provisions  of this  Article 13 shall not apply to
information  covered by any one of the following  exceptions or any  combination
thereof:  (i)  information  that was in the public domain prior to the receiving
party's  receipt  or that  subsequently  becomes  part of the  public  domain by
publication  or otherwise,  except by the receiving  party's  wrongful act; (ii)
information that the receiving party can demonstrate was in its possession prior
to receipt thereof from the disclosing party;  (iii)  information  received by a
party from a third party having no  obligation of  confidentiality  with respect
thereof; and (iv) information which was developed independently by the receiving
party without access to the disclosing party's Confidential Information.


                                       25



     13.3. Required Disclosure.  Notwithstanding  anything in this Article 13 to
the contrary,  if any party is required by Applicable  Laws, or in the course of
administrative or judicial proceedings,  to disclose  Confidential  Information,
such party may make such disclosure of such Confidential Information;  provided,
however,  that the party making such  disclosure  shall  immediately  notify the
other party of the requirement prior to disclosing the Confidential  Information
so that the disclosing  party may attempt to cause such third-party to treat the
Confidential   Information  in  a  confidential   manner  and  to  prevent  such
Confidential Information from becoming part of the public domain.

                                   ARTICLE 14

                             DOCUMENTS AND MATERIALS

     14.1. Documents and Materials. Operator shall maintain at the Plant current
as-built drawings, plans, specifications, descriptions, O&M Manuals, and related
materials  regarding  the Plant,  in each case to the extent such  documents and
materials  were  furnished to or prepared by Operator  during the Term. All such
materials and documents,  together with any materials and documents furnished to
Operator by Owner in connection with the Plant, shall be delivered to Owner upon
the expiration of the Term or earlier  termination of this Agreement;  provided,
however,  that  Operator  may retain and use  copies of all such  documents  and
materials in the course of its current and future business activities.

     14.2.  Review by Owner.  All materials and documents  referenced in Section
14.1 shall be  available  for review by Owner at all  reasonable  times and upon
reasonable notice during development and promptly upon completion thereof.

                                   ARTICLE 15

                            MISCELLANEOUS PROVISIONS

     15.1.  Agreement.  This Agreement  consists of the terms and conditions set
forth in the body hereof and the Appendices and other attachments hereto. In the
event of a conflict, variation or inconsistency between or among the Appendices,
other attachments and the terms and conditions set forth in the body hereof, the
terms  contained in the body hereof shall govern.  This  Agreement  contains the
entire agreement between the parties with respect to the subject matter hereof.

     15.2. Relationship of the Parties.  Operator is deemed to be an independent
contractor hereunder and shall not be deemed to be (i) a partner, joint venturer
or  affiliate of Owner,  (ii) an owner,  lessee,  or sublessee of the Plant,  or
(iii) an assignee or obligor under any  agreements  with respect to the Plant to
which it is not a party.


                                       26



     15.3. KeySpan Guaranty.  Operator shall provide to Owner upon the execution
and delivery of this Agreement a guaranty from KeySpan  Corporation,  Operator's
parent, of Operator's  obligations  hereunder in the form of an amendment to the
Guaranty  Agreement  dated May 28, 1998,  from KeySpan  Corporation  to the Long
Island Power  Authority,  which amendment shall be substantially in the form set
forth in Appendix C (the "KeySpan Guaranty").

     15.4.  Assignment.  This  Agreement  shall not be assigned by either  party
without the prior written consent of the other party hereto, which consent shall
not be unreasonably  withheld,  delayed or conditioned.  This Agreement shall be
binding upon and shall inure to the benefit of the parties and their  successors
and permitted assigns.

     15.5. Access.

          15.5.1.  Owner.  During the Term, Owner and its authorized  agents and
     representatives  shall  have  continuous  access at all times to the Plant.
     Owner shall comply with all Operator access and safety  requirements  while
     at the Plant.  Upon the  request  of Owner,  or its  authorized  agents and
     representatives,  Operator  shall  provide  such Persons with access to any
     Plant operating data and logs.

          15.5.2. Cooperation. During any such inspection or review of the Plant
     undertaken   during  the  Term,   Owner  and  its  authorized   agents  and
     representatives  must  strictly  comply with all of  Operator's  safety and
     security   procedures,   and   Owner   and  its   authorized   agents   and
     representatives  must conduct such  inspection and reviews in such a manner
     as to not unreasonably interfere with Operator's activities.  Operator also
     shall reasonably  cooperate with Owner in allowing other visitors access to
     the Plant under conditions mutually agreeable to the parties.

     15.6.  Not for  Benefit of Third  Parties.  Except as  otherwise  expressly
provided  herein,  this Agreement and each and every provision hereof is for the
exclusive  benefit of the parties hereto and is not for the benefit of any third
party.

     15.7. Force Majeure.

          15.7.1.  Events Constituting Force Majeure. As used in this Agreement,
     "Force  Majeure" means any act, event, or condition that causes delay in or
     failure of performance of obligations  under this  Agreement,  or otherwise
     materially and adversely affects a party's ability to perform, if such act,
     event or  condition  (i) is  beyond  the  reasonable  control  of the party
     relying  thereon,  (ii) is not the  result  of the  willful  misconduct  or
     negligent act or omission of such party,  and (iii) is not an act, event or
     condition,  the risk or consequence of which such party  expressly  assumed
     under this  Agreement,  and then only to the extent that such Force Majeure
     event cannot be cured, remedied,  avoided, offset, or otherwise overcome by
     the prompt  exercise  of  reasonable  due  diligence  of the party  relying
     thereon including, but not limited to:

          (a)  acts  of  God,  accident,   flood,  sabotage,   fire,  explosion,
               vehicular accident, epidemic,  earthquake,  lighting, drought, or
               similar occurrence,  acts of utilities,  transmission  outages or
               sudden or  disruptive  electrical  events or  disturbance  on the
               transmission  or  distribution  system,  disruption  of  Fuel  or
               materials supply,  acts of public or foreign enemy, war and other


                                       27



               hostilities,  invasion, blockade,  insurrection,  rebellion, riot
               and disorder,  strikes or labor  disturbances,  general arrest or
               restraint of government and people,  civil disturbance or similar
               occurrence;

          (b)  entry of an  injunctive or  restraining  order or judgment of any
               Governmental  Authority,  if such  order or  judgment  is not the
               result  of  the  act,  or  failure  to  act,  of a  party  or its
               subcontractors or suppliers; or

          (c)  suspension,  termination,  interruption  of, or failure to obtain
               any Permit required or necessary for the construction,  operation
               or   maintenance   of  the  Plant,   provided  such   suspension,
               termination,  interruption  or  failure  is not the result of the
               action  or   inaction   of  a  party   relying   thereon  or  its
               subcontractors or suppliers.

          Notwithstanding  the  foregoing,  events  of  Force  Majeure  excusing
     Operator's  obligations to operate and maintain the Plant shall not include
     (i) a strike or labor action by Operator's employees at the Plant; (ii) the
     failure of any subcontractor, supplier or vendor of Operator to perform its
     obligations  under any agreement or  undertaking  with Operator  unless the
     failure of such  subcontractor,  supplier or vendor to perform is caused by
     an event or condition  that would  qualify as an event of Force Majeure for
     Operator;  or (iii) any change in general  economic  conditions or costs of
     materials, supplies and labor.

          15.7.2.  Event of Force Majeure.  Except for the obligations of either
     party to make  payments  of  amounts  due to the  other  party,  the  party
     claiming Force Majeure shall be excused from  performance  and shall not be
     considered  to be in  default  in  respect  of any  obligation  under  this
     Agreement to the extent that a failure of  performance  of such  obligation
     shall be due to Force  Majeure.  If either  party's  ability to perform its
     obligations  under this Agreement is affected by Force  Majeure,  the party
     claiming such inability  shall: (i) promptly notify the other party of such
     Force Majeure and its cause and confirm the same in writing within five (5)
     Business Days of discovery of the event or circumstances  constituting such
     Force Majeure; (ii) immediately supply such available information about the
     event or circumstances constituting the Force Majeure and the cause thereof
     as is  reasonably  requested  by the other  party;  and  (iii)  immediately
     initiate removal of the cause of the Force Majeure or, if immediate removal
     is not possible, to mitigate the effect thereof.

          15.7.3.  Scope.  The  suspension of  performance  due to Force Majeure
     shall be of no  greater  scope and no longer  duration  than that  which is
     necessary.  The excused  party  shall use its  reasonable  best  efforts to
     remedy its inability to perform.

     15.8.  Strikes.  In the event that the Plant is unable to supply  capacity,
energy or  ancillary  services  to Owner due to a strike or other  form of labor
action  by  Operator's  employees,  or  the  employees  of  its  contractors  or
subcontractors,  Owner  shall have the right to operate  the Plant and to retain
such other  personnel or agents as Owner in its sole  discretion and at its sole
cost and expense deems necessary or advisable for such purposes.  For so long as
Owner  operates the Plant and/or  retains such other  personnel,  the  Allocated
Fixed O&M Costs Payment, Variable Charge Payment and the Fuel Management Fee, as


                                       28



applicable,  payable under this Agreement shall be reduced (but not less than to
zero) by an amount  equal to Owner's  costs to operate and  maintain  the Plant;
provided,  however  that  Operator  shall resume  operation  of the Plant,  upon
termination of such strike.

     15.9. Amendments. No amendments or modifications of this Agreement shall be
valid unless evidenced in writing and signed by duly authorized  representatives
of both parties.

     15.10. Survival. Notwithstanding any provisions herein to the contrary, the
provisions  set forth in Articles 6, 10,  11,12 and 13, and Sections  5.3,  7.3,
8.5, 15.1, 15.2, 15.6, 15.7, 15.10, 15.12, 15.15, 15.16, 15.17, 15.18, and 15.19
shall  survive  in full force the  expiration  or  earlier  termination  of this
Agreement.  In addition,  any and all rights and obligations accruing under this
Agreement  prior to the  termination  date or expiration date shall survive such
termination or expiration.

     15.11.  No Waiver.  It is understood  and agreed that any delay,  waiver or
omission by Owner or Operator to exercise  any right  arising from any breach or
default by Owner or Operator  with respect to any of the terms,  provisions,  or
covenants  of this  Agreement  shall not be construed to be a waiver by Owner or
Operator, as the case may be, of any subsequent breach or default of the same or
other terms, provisions or covenants on the part of the other party.

     15.12.  Notices.  Any  written  notice  required  or  permitted  under this
Agreement  shall be deemed to have been duly given on the date of  receipt,  and
shall be either  delivered  personally to the party to whom notice is given,  or
mailed to the party to whom notice is to be given,  by  facsimile or first class
registered or certified mail,  return receipt  requested,  postage prepaid,  and
addressed  to the  addressee  at the most recent  address  specified  by written
notice given to the other party in the manner  provided in this  Article  15.12.
The parties' addresses for such notices are as follows:

                  To Operator:

                  [KeySpan Corporation Subsidiary]
                  c/o KeySpan Corporation
                  175 E. Old Country Road
                  Hicksville, NY 11801
                  Attention: James Brennan
                  FAX No.: [____________]

                  To Owner:

                  Long Island Lighting Company (d/b/a LIPA)
                  333 Earle Ovington Blvd, Suite 403
                  Uniondale, New York 11553
                  Attention: Chief Operating Officer
                  w/copy to:General Counsel
                  FAX No.: [____________]


                                       29



     15.13. Representations and Warranties.

          15.13.1.  Owner Representations and Warranties.  Owner, as of the date
     of this Agreement,  makes the following  representations  and warranties as
     the basis for its undertakings contained herein:

          (a)  Owner  has all  requisite  power and  authority  to  execute  and
               deliver this  Agreement  and to perform  each of its  obligations
               hereunder. Owner has duly authorized the execution,  delivery and
               performance of this Agreement. This Agreement is the legal, valid
               and binding obligation of Owner and (assuming that this Agreement
               has been duly authorized,  executed and delivered by Operator) is
               enforceable against Owner in accordance with its terms.

          (b)  The execution and delivery of this Agreement, the consummation of
               the transactions  contemplated  herein and the fulfillment of and
               compliance   with  the   provisions  of  this  Agreement  do  not
               materially  conflict with or constitute a material breach of or a
               material default under any of the terms, conditions or provisions
               of any law, any order of any court or other agency of government,
               the   organizational   documents  of  Owner  or  any  contractual
               limitation,  restriction or outstanding trust indenture,  deed of
               trust, mortgage,  loan agreement,  other evidence of indebtedness
               or any other agreement or instrument to which Owner is a party or
               by  which it or any of its  property  is  bound  or  result  in a
               material  breach  of or a  material  default  under  any  of  the
               foregoing.

          (c)  All  organizational  consents and  authorizations,  and all other
               actions  required for Owner to execute and deliver this Agreement
               have been obtained or completed.

          (d)  Owner has obtained,  or will obtain as of the Effective Date, all
               Permits  required  to be  obtained  by Owner  for the  ownership,
               operation, maintenance, and repair of the Plant.

          15.13.2. Operator Representations and Warranties.  Operator, as of the
     date of this Agreement,  makes the following representations and warranties
     as the basis for its undertakings contained herein:

          (a)  Operator  has all  requisite  power and  authority to execute and
               deliver this  Agreement  and to perform  each of its  obligations
               hereunder.  Operator has duly authorized the execution,  delivery
               and performance of this  Agreement.  This Agreement is the legal,
               valid and binding  obligation of Operator and (assuming that this
               Agreement  has been duly  authorized,  executed and  delivered by
               Owner) is  enforceable  against  Operator in accordance  with its
               terms.

          (b)  The execution and delivery of this Agreement, the consummation of
               the transactions  contemplated  herein and the fulfillment of and
               compliance   with  the   provisions  of  this  Agreement  do  not
               materially  conflict with or constitute a material breach of or a
               material  default  under,   any  of  the  terms,   conditions  or
               provisions  of any law, any order of any court or other agency of
               government,   the  Operator's  organizational  documents  or  any
               contractual  limitation,  corporate or partnership restriction or


                                       30



               outstanding  trust  indenture,  deed  of  trust,  mortgage,  loan
               agreement,  other evidence of indebtedness or any other agreement
               or instrument to which  Operator is a party or by which it or any
               of its  property is bound or result in a material  breach of or a
               material default under any of the foregoing.

          (c)  All  organizational  consents and  authorizations,  and all other
               actions  required  for  Operator  to  execute  and  deliver  this
               Agreement have been obtained or completed.

          (d)  Operator  has either  obtained  or will  obtain all  licenses  or
               certificates  that it or its  employees  are  required  to secure
               under Applicable Law to perform the Services.

     15.14.   Counterparts.   The  parties  may  execute   this   Agreement   in
counterparts,  which  shall,  in the  aggregate,  when  signed  by both  parties
constitute one and the same instrument;  and, thereafter, each counterpart shall
be deemed an original instrument.

     15.15.  Governing Law. This Agreement  shall be  interpreted,  governed and
construed  in  accordance  with the laws of the  State of New York.  Any  action
arising  out of or  relating  to this  Agreement  shall be  brought  in New York
Supreme Court,  Nassau County,  or United States  District Court for the Eastern
District of New York.

     15.16. Captions;  Appendices.  Titles or captions of the articles contained
in this  Agreement  and the  Appendices  annexed  hereto are inserted  only as a
matter of convenience and for reference,  and in no way define,  limit,  extend,
describe  or  otherwise  affect the scope or meaning  of this  Agreement  or the
intent of any provision hereof.

     15.17. Non-Recourse.  Except for Owner's rights under the KeySpan Guaranty,
neither  party  shall  have  any  recourse  against  any  of the  other  party's
Affiliates and each party expressly waives its rights of recourse  against,  and
releases from  liability,  the other party's  Affiliates.  Each party shall look
solely to the other party,  and the assets  thereof,  to effect recovery of such
party's claims against the other party.

     15.18. Severability. The invalidity or unenforceability of any provision of
this Agreement  shall be determined  only by a court of competent  jurisdiction,
and the parties hereby agree to negotiate an equitable adjustment to the invalid
or  unenforceable  provisions with a view toward  effecting the purposes of this
Agreement;  the  validity  or  enforceability  of the  remaining  provisions  or
portions or applications thereof, shall not be affected thereby.

     15.19. Rules of Interpretation.  The terms and provisions of this Agreement
shall be interpreted and construed as follows: (a) words of the masculine gender
shall  include  corresponding  words of the feminine or neuter  genders and vice
versa;  (b) the plural shall include the singular and vice versa; (c) unless the
context  indicates  otherwise,  all  references  herein to  Articles,  Sections,
paragraphs,  appendices, schedules, and Appendices shall refer, respectively, to
the Articles, Sections, paragraphs, appendices, schedules and Appendices of this
Agreement;  (d) the words  "includes" or "including"  mean  "including,  but not
limited to" and are not limiting;  (e) any reference to an agreement, a contract


                                       31



or  any  other  document  means  the  same  as  it  may  be  amended,  modified,
supplemented  or replaced from time to time,  unless  otherwise  noted;  (f) any
reference to a Person  includes such Person's  successors  and assigns;  and (g)
"ensure",  shall not be construed as a guarantee, but shall imply only a duty to
use reasonable  effort and care,  consistent  with Prudent  Electric  Production
Practices.

     15.20.  Private  Use  Rules.  In the event that it is  determined  that the
compensation  provisions  contained  in this  Agreement  do not comply  with the
applicable  Internal  Revenue  Service  "private  use" rules,  the parties shall
cooperate  with each other and  negotiate  in good faith to amend or modify such
compensation  provisions so that they do so comply while  retaining the relative
economic benefits of the parties under this Agreement.

     15.21.  State Law  Requirements.  All  contracts  entered into by Owner are
required under New York State law to contain  certain terms and  conditions,  as
set forth in Appendix E hereto and the  provisions of such Appendix E are hereby
deemed  incorporated  in this  Agreement  at this  place.  To the  extent of any
conflict  between any other provision of this Agreement and Appendix E, Appendix
E shall control. The Operator shall comply with such terms and conditions during
the Term of this Agreement.











                                       32




     IN WITNESS WHEREOF,  the parties have executed this Agreement through their
duly  authorized  officers  as of the date set  forth  in the  preamble  to this
Agreement.


LONG ISLAND LIGHTING COMPANY                     [KEYSPAN CORPORATION
(d/b/a LIPA)                                     SUBSIDIARY]
By: ________________________                     By: __________________________
Name: _______________________                    Name: ________________________
Title: _______________________                   Title: _______________________












                                       33




                                  APPENDIX "A"
                                  ------------

                                EXCLUDED SERVICES
                                -----------------

The following costs and other obligations are Owner's responsibility:

     1.   Property Taxes

     2.   Inventory Taxes

     3.   Emission credits and allowances

     4.   Costs imposed by the New York  Independent  System  Operator (or other
          regional   transmission   or  electrical   pool  operator)   rules  or
          procedures,  including  any  costs  associated  with the sale or other
          marketing of any energy produced by the Plant.

     5.   Costs  relating to  unforeseen,  sudden  major  equipment or component
          failures  not  covered  under  equipment  warranty,   including  major
          component failures.

     6.   Initial  inventory of spare parts,  consumables and tools, and storage
          of spare parts.

     7.   Costs to replace  Plant  equipment  to the extent  that such costs are
          capital expenditures and all other capital improvements.

     8.   Cost  of any  capital  expenditures  for  alterations,  modifications,
          improvements  or  additions  to the Plant  which are  required  by any
          Governmental Authority or otherwise required to comply with Applicable
          Laws.

     9.   Costs  subject  to  Owner's  indemnification  obligations  under  this
          Agreement.

     10.  Costs to remedy any notice of  violation or  non-compliance  issued by
          any  Governmental  Authority  with  regard  to  air  emissions,  water
          discharges,  noise  emissions,   hazardous  discharges  or  any  other
          environmental, health or safety problems affecting the Plant.



                                      A-1





                                  APPENDIX "B"
                                  ------------

                        ALLOCATED FIXED O&M COST PAYMENT
                        --------------------------------

         On the Effective Date and for the first Calendar Year, the Allocated
Fixed O&M Cost Payment shall be an amount determined as follows:

  AFOMCP = (CC + $7,120,000 - PT - DEP- RORB - TAXES - CARC - ASC)*(PE/TE)/12

     Where:

     AFOMCP = Allocated Fixed O&M Charge Payment
     CC   = The Capacity Charge in effect under the PSA.
     PT   = The component for property taxes included in the Capacity Charge.
     DEP  = The component for depreciation included in the Capacity Charge.
     RORB = The  component  for  return on rate base  included  in the  Capacity
            Charge.
     TAXES = The  component for state and federal  income taxes  included in the
             Capacity Charge.
     CARC = The  component  for common assets  recovery  charge  included in the
            Capacity Charge.
     ASC  = The component for the amortization of security costs included in the
            Capacity Charge.
     PE   = The  total  number of  operator's  full  time  equivalent  employees
          working  at  the  Plant  as of  the  date  immediately  preceding  the
          Effective Date, excluding, however, any MSD workers. In no event shall
          PE  exceed  the  average  number  of  such  employees  for the two (2)
          Calendar Years immediately preceding the Effective Date.
     TE   = The total number of full time equivalent employees working as of the
          day  immediately  preceding  the  Effective  Date for  Operator or its
          affiliates at all  generating  facilities  covered under the PSA as of
          such date.

     On January 1 of each  Calendar  Year during the Term  through  December 31,
2008, the Allocated  Fixed O&M Charge shall be equal to the Allocated  Fixed O&M
Charge  for the  previous  year plus the Labor Cost  Index  Adjustment  plus the
Benefit Cost Index Adjustment, where:

          "Labor Cost Index  Adjustment  (Production)"  means the sum of (1) the
          average  monthly labor costs for the Plant  contained in the Allocated
          Fixed O&M  Charge  Payments  for the prior  Calendar  Year and (2) the
          product of (a) the Defined Labor Index times (b) average  monthly base
          labor costs  contained in the Allocated  Fixed O&M Charge Payments for
          the prior Calendar Year.

          "Defined Labor Index" means the percentage change for the twelve month
          period ending on the preceding  September 30 for the  Employment  Cost
          Index  for  Wages  and  Salaries  Only,   Private  Industry   Workers,
          Northeast,  Not Seasonally Adjusted, as published by the United States
          Bureau of Labor Statistics.


                                      B-1




                  "Benefit Cost Index Adjustment" means the sum of (1) the
                  average monthly benefit costs contained in the Allocated Fixed
                  O&M Charge Payments for the Plant in the prior Calendar Year
                  and (2) the product of (a) the Defined Labor index times (b)
                  average monthly base benefit costs contained in the Allocated
                  Fixed O&M Charge Payments for the prior Calendar Year.

     For each  Calendar  Year  during  the term after  December  31,  2008,  the
Allocated  Fixed O&M Charge  shall be an amount to be agreed upon by the parties
based  upon a cost of  service  analysis.  If the  parties do not agree on a new
Allocated  Fixed O&M Charge for the Calendar Years after December 31, 2008, then
such dispute shall be resolved in accordance with Article 6.









                                      B-2





                                  APPENDIX "C"
                                  ------------

                       FORM OF KEYSPAN GUARANTY AMENDMENT
                       ----------------------------------

                         AMENDMENT TO GUARANTY AGREEMENT

     THIS  AMENDMENT  TO  THE  GUARANTY  AGREEMENT  is  made  and  dated  as  of
[_________________]  (this "Amendment") to the Guaranty  Agreement,  dated as of
May 28,  1998 (the  "Guaranty"),  from  KEYSPAN  CORPORATION  (f/k/a  Marketspan
Corporation),  a corporation  organized and existing under the laws of the State
of New York (together with any permitted  successors and assigns hereunder,  the
"Guarantor"), to LONG ISLAND POWER AUTHORITY (together with its subsidiaries and
other permitted assignees of the Agreements, the "Authority").


                                    RECITALS

     WHEREAS,   Long  Island  Lighting  Company  d/b/a  LIPA  (the  "Owner"),  a
wholly-owned  subsidiary of the Authority,  and [KeySpan Corporation Subsidiary]
(the "Operator"),  a subsidiary of the Guarantor are parties to an Operation and
Maintenance  Agreement,  dated  as of the date  hereof  (the  "O&M  Agreement"),
whereby the Operator has agreed to operate and maintain the Plant (as defined in
the O&M Agreement) upon the terms and conditions set forth in the O&M Agreement;
and

     WHEREAS,  pursuant to Section 15.3 of the O&M  Agreement,  the Guarantor is
entering into this Amendment to guarantee the  obligations of the Operator under
the O&M Agreement on the terms and subject to the conditions of the Guaranty.

     NOW, THEREFORE,  in consideration of the foregoing and the mutual covenants
and  agreements   hereinafter   set  forth  and  for  other  good  and  valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto agree as follows:

     Section 1 Definitions. All capitalized terms used in this Amendment and not
otherwise defined shall have the meanings assigned to them in the Guaranty.

     Section 2.  Amendment to the Guaranty  Agreement.  The parties hereby agree
that (i) the term  "Agreements"  as used in the  Guaranty  shall  be  deemed  to
include the O&M  Agreement  for all  purposes of the  Guaranty and (ii) the term
"Subsidiaries"  as used in the Guaranty  shall be deemed to include the Operator
for all purposes of the Guaranty.

     Section 3. Miscellaneous

          (a) Incorporation by Reference.  Sections 1.2(A),  (B), (C) and (D) of
     the Guaranty  shall be  incorporated  by  reference  herein as if fully set
     forth herein.

          (b) Entire  Agreement;  Authority.  The  Guaranty,  as amended by this
     Amendment,  together  with the Agreement  and the  Transaction  Agreements,
     constitute the entire agreement  between the parties hereto with respect to


                                      C-1



     the transactions contemplated by the Guaranty. Nothing in this Amendment is
     intended to confer on any person other than the  Guarantor,  the  Authority
     and their  successors  and  assigns as  permitted  hereunder  any rights or
     remedies under or by reason of this Amendment.

          (c)  Counterparts.  This  Amendment  may be  executed in any number of
     original  counterparts.  All such counterparts shall constitute but one and
     the same Amendment.

          (d) Applicable  Law. This Amendment shall be governed by and construed
     in accordance with the applicable laws of the State of New York.

          (e) Full Force and Effect of Guaranty.  Notwithstanding  the amendment
     and extension of the Management  Services  Agreement,  or the amendments to
     the  Power  Supply  Agreement  and the  Energy  Management  Agreement,  the
     Guaranty,  as modified by this  Amendment,  and as this Amendment is made a
     part thereof, shall remain in full force and effect.





                                      C-2






          IN WITNESS  WHEREOF,  the parties  have caused  this  Amendment  to be
     executed and delivered by their duly authorized officers or representatives
     as of the date first above written.

                                                     LONG ISLAND POWER AUTHORITY



                                                     By  _______________________
                                                     Name:
                                                     Title:



                                                     KEYSPAN CORPORATION



                                                     By  _______________________
                                                     Name:
                                                     Title:






                                      C-3








                                  APPENDIX "D"
                                  ------------

                            FUEL MANAGEMENT SERVICES
                            ------------------------

     D1.  General.  Operator shall manage all aspects of the fuel supply for the
Plant including determinations regarding the type of fuel used for operating the
Plant and the source of such fuel  supply  taking into  account the  purchase of
alternate  sources of  electricity  in lieu of  electricity  from the Plant when
economic.  Owner will compensate  Operator for such fuel management  services in
accordance  with the terms of this Agreement.  In this respect,  Operator shall,
among other things:

          (a)  Acquire   required   gas  supplies   which   includes  a  mix  of
     Interruptible and Firm Gas Supplies as deemed appropriate;

          (b) Acquire  required fuel oil supplies in accordance  with generating
     unit specific requirements as determined by Operator;

          (c) Negotiate,  execute and administer fuel supply  contracts with one
     or more entities;

          (d)  Obtain  and  schedule  transportation  for all  fuel  deliveries,
     including daily nomination and dispatch;

          (e)  Arrange  for  the   displacement  of  gas  across  KeySpan's  gas
     distribution system and the New York Facilities to facilitate deliveries to
     the Plant; and

          (f)  Arrange-for  the  delivery,  receipt,  fuel  analysis,  handling,
     storage, local and on site transportation and use of Fuel.

Unless  otherwise  arranged and agreed to between  Owner and  Operator,  all gas
supplies  to be used at the Plant will be  Interruptible  Gas  Supplies or short
term Firm Gas Supplies  with  contracts  extending no longer than one month from
the date  entered  into,  all of which are System  Interruptible  Gas  Supplies.
Operator  will  arrange for the most  cost-effective  fuel for use at the Plant,
subject to the existing  obligations of KeySpan Energy Delivery-Long Island with
respect to the delivery of gas to its  customers.  Operator will arrange for Gas
Balancing  services  to be  provided  associated  with use of gas at the  Plant.
Operator  will provide these  services  from existing  assets of Operator or its
affiliates.  Operator will not contract for  additional  firm assets  (including
storage,  pipeline  capacity  or swing gas supply)  specifically  for use in the
Plant unless Owner and Operator agree to the contract.  Such  Interruptible  Gas
Supplies will be provided only as long as it is available for use, in the Plant.

     D2. Fuel  Measurement.  To the extent not  already in place,  installation,
maintenance and operation of all fuel metering and telemetering  equipment shall
be undertaken by Operator in accordance with applicable  requirements.  Operator
shall  cooperate  with  Owner in Owner's  verification  of the  accuracy  of all
measurements of fuel made by Operator and Owner shall have access to all records
of Operator necessary for such purpose.


                                      D-1




     D3. General Fuel Service Requirements.

     D3.1 Minimization of Costs. In providing the fuel,  Operator shall use best
efforts to minimize fuel costs for the Plant, such efforts being consistent with
(i) all applicable  insurance  policies,  (ii) all applicable  prudent  industry
practices and standards,  including Prudent Electric Production Practices, (iii)
all  applicable  operating  and contract  constraints  for fuel  delivery,  (iv)
Operator's collective bargaining agreements and (v) applicable Laws.

         D3.2 Accounting Controls. Operator, on a monthly basis, shall provide,
or cause to be provided, all accounting, bookkeeping, and administrative
services in connection with the fuel costs, such accounting to be consistent
with the FERC Uniform System of Accounts and generally accepted accounting
principles consistently applied. In areas of conflict, FERC accounting
principles shall control. All records relating to such services shall be subject
to review and audit in accordance with Section 7.3.

     D4. Ownership of Fuel.

     D4.1  Ownership of the Fuel.  In order to eliminate  any  ambiguity in this
Agreement with respect to the ownership of the Fuel purchased by Operator or any
Affiliate of Operator on behalf of Owner pursuant to this  Agreement,  Owner and
Operator agree as follows:  (i) Owner  acknowledges  that it is the owner of the
Fuel; and (ii) Operator  acknowledges  and confirms that it is obligated to, and
agrees that it will,  indemnify the Owner Indemnified  Parties in the manner set
forth in this Appendix D for any Loss, as defined in this Appendix D.

     D4.2 Owner's Agreements.  Owner hereby  acknowledges  ownership of the Fuel
throughout the effective term of this Agreement and agrees that from the date of
this Agreement it will:

     (i)  take no position  inconsistent  with its  ownership of the Fuel in any
          filing with a  governmental  agency or department  (including  any tax
          return) or in any judicial or administrative  proceeding (other than a
          judicial  proceeding in which the  provisions of this Agreement may be
          at issue);

     (ii) account  for the Fuel as an asset of Owner  and  cause  the Fuel to be
          reflected as such in its financial statements; and

     (iii) provide  from  time to  time  such  further  assurances  and  written
          confirmation  of its  ownership  of the  Fuel as shall  reasonably  be
          requested by Operator.

     D5. Fuel Indemnification Provisions

     D5.1 General Indemnity.  Operator acknowledges and confirms that during the
Term it is  obligated  to, and agrees that it will,  indemnify,  defend and hold
harmless the Owner Indemnified Parties against any and all Losses (as defined in
Section D5.2,  below),  other than any Losses caused by the negligence,  willful
misconduct  or breach  of  statutory  or  regulatory  duty of one or more  Owner
Indemnified Parties; provided, however that no Loss shall be deemed to have been
caused  by  the  negligence,  willful  misconduct  or  breach  of  statutory  or
regulatory duty of any Owner  Indemnified  Party if any action or failure to act


                                      D-2





giving rise to such Loss is that of Operator or any Affiliate of Operator acting
on behalf of any Owner Indemnified Party pursuant to one of this Agreement,  the
Energy Management Agreement or the Power Supply Agreement. In no event shall the
term "Loss" and "Losses" mean Economic  Loss, as that term is defined in Section
D5.2 below.

     D5.2 Certain  Definitions.  As used in this Appendix D, the term "Loss" and
"Losses"  mean  any  loss,  claim,  damage,  liability,  demand,  action,  suit,
judgment,  assessment,  penalty,  award,  cost  and/or  expense  suffered  by or
asserted against any Owner  Indemnified  Party or to which any Owner Indemnified
Party may become subject  insofar as any such loss,  claim,  damage,  liability,
demand, action, suit, judgment, assessment,  penalty, award, cost and/or expense
arises  out of, or is based  upon,  Owner's  ownership  of the Fuel,  including,
without  limitation,  any  Environmental  Loss, Fuel Loss,  General Claim and/or
Collection  Expense,  each as defined below.  For the purpose of defining "Loss"
and exclusions  thereto and as otherwise used in this Appendix D, in addition to
the definitions  set forth in Article 1 of this  Agreement,  the following terms
are used with the meanings set forth below:

     "Attorneys' Fees" means and includes all reasonable costs, fees and charges
(including,  without  limitation,  charges for  disbursements)  of any attorney,
legal assistant and paralegal,  and shall include both outside counsel  retained
by any Owner  Indemnified  Party and in-house counsel for any Owner  Indemnified
Party and shall  also  include,  without  limitation,  expert  witness  payments
(whether consulting or testifying) and other court costs whether or not incurred
in a judicial or administrative proceeding.

     "Collection  Expense"  means any expense  (including,  without  limitation,
Attorneys'  Fees)  incurred  by an Owner  Indemnified  Party in order to  obtain
payment from Operator or an insurer in respect of a Loss or otherwise to enforce
the terms of this Appendix D.

     "Economic Loss" shall mean any loss in economic value of the Fuel resulting
from, but not limited to, such factors as: changes in the unit price of the Fuel
in the open market, changes in the cost of transporting the Fuel to the point of
consumption,  changes in the cost of storing the Fuel prior to consumption,  and
changes in the cost of injecting or withdrawing the Fuel.  "Economic Loss" shall
also mean any loss  resulting  from  trading  in  financial  derivatives  in the
commodities  markets that are designed to hedge price risk  associated  with the
Fuel,  but in no event will any loss that falls within the  definition  of "Fuel
Loss" (as that term is  defined in this  Appendix  D) also be  considered  to be
"Economic Loss."

     "Fuel  Environmental  Law" means and  includes  any present  and/or  future
federal,  state  or  local  law,  ordinance,  code,  rule,  regulation  or order
regulating,   relating  to,  or  imposing  liability  or  standards  of  conduct
concerning environmental matters, permits, pollution, waste disposal, industrial
hygiene,  land use or the  protection  of human or  animal  health  or  welfare,
including,  without  limitation,  those  related to any  Release  or  threatened
Release of hazardous  materials and to the ownership,  transportation,  storage,
use or disposition of hazardous materials,  in any manner applicable to the Fuel
and other requirements of governmental  authorities  relating to the environment
or to any  hazardous  material  or  Fuel-Related  Activity  (including,  without
limitation,  the U. S. Comprehensive  Environmental  Response,  Compensation and
Liability Act, the U. S. Superfund Amendment and Reauthorization  Act, the U. S.
Toxic Substances Control Act, the U. S. Resources Conservation and Recovery Act,


                                      D-3




the U. S. Hazardous Material Transportation Act, the U. S. Clean Air Act, the U.
S. Water Pollution Control Act, the U. S. River and Harbors Act of 1899, the Oil
Pollution Act of 1990, the New York Environmental Conservation Law and all rules
arid regulations of the United States  Environmental  Protection Agency, the New
York  Department  of  Environmental   Conservation,   or  any  other  agency  or
governmental board or entity having jurisdiction over the Fuel or the ownership,
transportation,  storage,  use or disposition  thereof,  as any of the foregoing
have been or are hereafter amended).

     "Environmental  Loss"  means  a  Loss  suffered  or  incurred  by an  Owner
Indemnified  Party  arising out of or as a result of: (i) any  violation  of any
applicable  Fuel  Environmental  Law  relating to the Fuel or to the  ownership,
transportation,  storage,  use or disposition  thereof;  (ii) any investigation,
inquiry,  order,  hearing,   action,  or  other  proceeding  by  or  before  any
governmental   agency   addressing   the  violation  of  any   applicable   Fuel
Environmental Law in connection with any Fuel-Related Activity; (iii) any claim,
demand  or  cause  of  action,  or  any  action  or  other  proceeding,  whether
meritorious  or not,  brought or asserted  against any Owner  Indemnified  Party
which  directly or indirectly  relates to, arises from or is based on any of the
matters described in clauses (i) or (ii), or any allegation of any such matters;
or (iv) any cost of  reclamation  or  remediation  with respect to any property,
whether  then owned by such  Owner  Indemnified  Party or by another  person and
whether legally imposed under a Fuel Environmental Law or as a result of a Legal
Proceeding or necessary to restore an Owner Indemnified  Party's property to the
condition  it was in and/or the value it held prior to any damage  suffered as a
result of any Fuel-Related Activity.

     "Fuel Loss" means any actual loss or  deprivation  of Fuel to Owner so that
such Fuel is not  available  for its intended use under this  Agreement  through
either  a  loss,  damage,  theft,  seizure  or  destruction  of  such  Fuel or a
diminution  of the  value  of Fuel  through  the  attachment  of  liens or other
encumbrances  or claims to title for which Owner is not  responsible;  provided,
however,  that,  at the sole  option of Owner,  the  amount of any Fuel Loss for
purposes  of this  Appendix D may be  measured  by the  expense,  as  reasonably
determined by Owner,  of acquiring  power in  substitution  for that which would
have been  generated  with the Fuel to which such Fuel Loss  relates;  provided,
further that under no  circumstances  shall Operator be liable hereunder for any
amount in excess of the amount of the replacement value of the Fuel which is the
subject of the Fuel Loss at the time it is replaced.

     "Fuel-Related  Activity"  means any storage,  holding,  release,  emission,
discharge,   processing,    abatement,   removal,   disposition,   handling   or
transportation of Fuel.

     "General Claim" means a claim for damages; other than a claim brought under
a Fuel Environmental Law, asserted against an Owner Indemnified Party because of
Owner's  ownership  of the Fuel,  including  and  expressly  limited to, a claim
asserted by: (i) a party claiming bodily injury or property damage caused by the
Fuel or by the  transportation,  storage,  use or disposition  thereof;  (ii) an
employee or former  employee of Operator or KeySpan  Corporation  or its various
subsidiaries  seeking  worker's  compensation,  pension  or  other  benefits  of
employment or alleging  violations of the Occupational Safety and Health Act, or
other statutes or governmental  regulations  governing  safety in the workplace,
labor  relations or other  aspects of the  employer/employee  relationship  as a
result of a Fuel-Related  Activity.;  (iii) a government or agency or department
thereof  seeking the  assessment  of fines or penalties in  connection  with the
transportation of the Fuel or any other aspect of the ownership, storage, use or


                                      D-4





disposition  of the Fuel;  or (iv) any other  party  seeking  to hold such Owner
Indemnified  Party legally  responsible for damage caused by the Fuel or for the
acts or omissions of Operator or KeySpan Corporation or its various subsidiaries
managing the Fuel.

     "Legal  Proceeding" means an action,  suit,  investigation,  administrative
proceeding or formal proceeding of an adversarial nature before a court or other
governmental tribunal with jurisdiction over the parties and authority to assess
fines or penalties  and/or to award damages or issue an order binding on a party
thereto.

     D5.3 Fuel Indemnification Procedure.

     (a) Losses Not Asserted or Incurred in a Legal  Proceeding.  If, other than
in the course of a Legal  Proceeding,  an Owner  Indemnified Party shall incur a
Loss or  receive a demand  or claim for  payment  by it  which,  if paid,  would
constitute a Loss,  such Owner  Indemnified  Party shall deliver to Operator (in
the case of any such demand or claim,  promptly,  but in any case .within twenty
days  after  receipt  thereof),   a  written  request  for   indemnification  (a
"Request"),  setting forth in reasonable  detail the nature of such Loss, demand
or claim,  the amount thereof (or if the precise amount of such Loss,  demand or
claim is not yet  known or  determinable,  the  estimated  amount  or  magnitude
thereof  or a  statement  to the effect  that  such.  amount is not yet known or
determinable)  and the basis on which such Owner Indemnified Party believes that
it is entitled to be indemnified pursuant to this Appendix D, accompanied by any
appropriate supporting documentation. If

     (i)  the amount of the Loss,  demand or claim is set forth in the  Request,
          the  Operator  shall  pay the  requested  amount  within  thirty  (30)
          Business  Days (as used in this  Appendix D, the term  "Business  Day"
          means any day on which commercial banks are not authorized or required
          to be closed in Nassau County, New York); provided,  however, that, if
          Operator  believes  that the  information  provided in such Request is
          incomplete or insufficient to support a claim for  indemnification  in
          the amount stated or that the Request does not state a valid claim for
          indemnification  pursuant to this Appendix D, it shall,  not more than
          ten (10) Business Days after receipt of the Request,  deliver  written
          notice to such Owner  Indemnified  Party that it (i) requires  further
          information  in order  to  evaluate  the  claim  for  indemnification,
          stating the nature of the required  information,  or (ii) acknowledges
          that such Owner Indemnified Party is entitled to  indemnification  but
          disagrees  with  the  amount  requested,  stating  the  basis  for its
          disagreement  and. the amount it believes to be appropriate,  or (iii)
          disclaims  liability  under this  Appendix D with respect to the Loss,
          demand or claim  described in the  Request,  stating the basis for its
          denial of liability; or

     (ii) the  precise  amount of the Loss,  demand or claim is not set forth in
          the Request,  Operator shall,  within ten (10) Business Days,  deliver
          written   notice  to  such   Owner   Indemnified   Party   either  (a)
          acknowledging  the Loss as covered by this  Appendix D, subject to the
          ultimate  determination  of the  amount  thereof;  or (b) if  Operator
          believes that the  information  provided in such Request is incomplete
          or  insufficient  to support a claim for  indemnification  or that the
          Request does not state a valid claim for  indemnification  pursuant to


                                      D-5




          this Appendix D, notifying such Owner  Indemnified Party that Operator
          (x) requires  further  information  in order to evaluate the claim for
          indemnification,  stating the nature of the required  information,  or
          (y)  disclaims  liability  under this  Appendix D with  respect to the
          Loss, demand or claim described in the Request,  stating the basis for
          its denial of liability.

If Operator has made a request for further  information,  such Owner Indemnified
Party  shall,  within ten (10)  Business  Days,  either  provide  the  requested
information  or notify  Operator in writing that it does not believe any further
information is necessary. If the Owner Indemnified Party fails to respond within
ten (10)  Business  Days or fails to  satisfy  Operator's  request  for  further
information,  Operator shall deliver  written  notice to such Owner  Indemnified
Party that it  disclaims  liability  under this  Appendix D with  respect to the
Loss, demand or claim described in the Request, stating the basis for its denial
of  liability.  If the Owner  Indemnified  Party  provides  further  information
satisfying  Operator's  request,  Operator shall, within ten (10) Business Days,
either  (a) if the  Request  stated  a  specific  amount  of the  Loss,  pay the
requested  amount;  (b) if the Request did not state a specific  amount of Loss,
deliver written notice to such Owner  Indemnified Party that it acknowledges the
Loss,  demand or claim as covered by this  Appendix D,  subject to the  ultimate
determination of the amount thereof; or (c) deliver written notice to such Owner
Indemnified Party that it disclaims liability under this Appendix D with respect
to the Loss, demand or claim described in the Request, stating the basis for its
denial of  liability.  If the Request  does not state a precise  amount of Loss,
demand or claim,  within five (5) Business  Days after it becomes aware of or is
able  to  determine  the  amount  of the  Loss,  demand  or  claim,  such  Owner
Indemnified  Party  shall  deliver  to  Operator,  a written  supplement  to the
Request,  setting forth in reasonable  detail the amount of such Loss, demand or
claim and the manner in which it was determined,  accompanied by any appropriate
supporting  documentation.  Operator  shall respond to any such  supplement to a
Request in the manner  contemplated by clause (i), above.  Any dispute as to the
amount or appropriateness of any  indemnification  requested  hereunder shall be
resolved in the manner provided in Article 6 of this Agreement.

     (b) Indemnification in Connection with Losses Incurred or Asserted in Legal
Proceedings.  Promptly after receipt by an Owner  Indemnified Party of notice of
the  commencement  of any Legal  Proceeding  which may  result in a Loss to such
Owner Indemnified  Party, but in any case within ten (10) Business Days thereof,
such Owner  Indemnified  Party will, if a claim in respect thereof is to be made
against  Operator  under this  Appendix  D,  notify  Operator  in writing of the
commencement  thereof.  In case any such  action is  brought  against  any Owner
Indemnified  Party,  and  it  notifies  Operator  of the  commencement  thereof,
Operator will be entitled to participate therein, and, to the extent that it may
wish to assume the defense thereof, with counsel reasonably satisfactory to such
Owner  Indemnified  Party, it may elect by written notice delivered to the Owner
Indemnified  Party promptly after receiving the aforesaid notice from such Owner
Indemnified  Party,  to assume the  defense  thereof,  with  counsel  reasonably
satisfactory.  to such Owner Indemnified Party;  provided,  however, that if the
defendants  (including  impleaded  parties) in any such action include both such
Owner Indemnified Party and Operator and such Owner Indemnified Party shall have
reasonably  concluded  that- there may be legal defenses  available to it and/or
other Owner Indemnified Parties which are different from or additional to' those
available to Operator, such Owner Indemnified Party or Owner Indemnified Parties
shall have the right to select  separate  counsel to assert such legal  defenses
and to  otherwise  participate  in the  defense of such action on behalf of such


                                      D-6




Owner  Indemnified Party or Owner  Indemnified  Parties.  Upon receipt of notice
from Operator to such Owner  Indemnified  Party of its election so to assume the
defense of such action and approval by the Owner  Indemnified  Party of counsel,
Operator will not be liable to such Owner  Indemnified Party under this Appendix
D  for  any  legal  or  other  expenses  subsequently  incurred  by  such  Owner
Indemnified  Party in connection  with the defense thereof unless (i) such Owner
Indemnified  Party shall have employed  separate  counsel in connection with the
assertion of legal defenses in accordance with the proviso to the next preceding
sentence (it being  understood,  however,  that Operator shall not be liable for
the  expenses  of  more  than  one  separate  counsel   representing  the  Owner
Indemnified  Parties who are parties to such action);  (ii)  Operator  shall not
have employed counsel  satisfactory to such Owner Indemnified Party to represent
such  Owner   Indemnified  Party  within  a  reasonable  time  after  notice  of
commencement  of the action;  or (iii) Operator has authorized the employment of
counsel for such Owner Indemnified Party at the expense of Operator;  and except
that if  clause  (i) or (iii) is  applicable,  such  liability  shall be only in
respect of the counsel referred to in such clause (i) or (iii).

     (c) Contribution.  In order to provide for just and equitable  contribution
in  connection  with any  Legal  Proceeding  under  circumstances  in which  the
indemnification  provided for in this Appendix D is due in  accordance  with the
terms  hereof  but is for any  reason  held by a court  to be  unavailable  from
Operator, on the grounds of policy or otherwise, Operator and the affected Owner
Indemnified  Parties shall  contribute to the aggregate  Losses  (including  any
legal and other expenses reasonably incurred in connection with investigating or
defending any portions of the complaint to which  Operator and one or more Owner
Indemnified  Parties may be subject)  in such  proportion  as the court or other
tribunal shall find  equitable in light of the relative fault or  responsibility
of Operator  and the Owner  Indemnified  Parties.  Any Owner  Indemnified  Party
entitled to contribution shall, promptly after receipt of notice of commencement
of a Legal Proceeding against such Owner Indemnified Party in respect of which a
claim for  contribution  may be made against  Operator under this paragraph (c),
but in any case within ten (10) Business Days thereof,  whether or not a request
for  indemnification  is to be made in respect of such Legal Proceeding,  notify
Operator in writing of the commencement  thereof. Each Owner Indemnified Party's
obligation to contribute pursuant to this paragraph (c) shall be several and not
joint.

     (d) Progress Payments.  Notwithstanding any other provision of this Section
D5.3,  if an Owner  Indemnified  Party has delivered a Request with respect to a
Loss,  claim or demand  pursuant  to  Section  D5.3(a)  hereof or a notice  with
respect to a Legal Proceeding pursuant to Section D5.3(b) hereof, Operator shall
pay promptly, but in any case within thirty (30) Business Days of the receipt of
a written request  therefor,  such amounts  disbursed by such Owner  Indemnified
Party in connection with such Loss,  claim or demand or such Legal Proceeding as
are set forth in such written request; provided,  however, that all amounts paid
by Operator  pursuant to this Section D5.3(d) shall be credited against the full
amount  of the  Loss  suffered  by  such  Owner  Indemnified  Party  as  finally
determined pursuant hereto; provided, further, that if the aggregate amount paid
to any Owner Indemnified Party pursuant to this Section D5.3(d) shall ultimately
be  determined  to have been paid in  respect  of a claim for which  such  Owner
Indemnified  Party was not legally  entitled to be indemnified  pursuant to this
Appendix D or in an amount which exceeded the full amount of the Loss ultimately
determined to be subject to this Appendix D, such Owner Indemnified Party shall,
promptly after receipt of a written request  therefor from Operator,  but in any
case within five (5) Business Days thereafter,  repay to Operator such aggregate
amount or the portion thereof which exceeded the amount of the Loss, as the case
may be.


                                      D-7




     (e) Effect of Insurance Coverage, Claims and Payments.  Notwithstanding any
other  provision of this Appendix D, no payment  required to be made to an Owner
Indemnified  Party in respect of a Loss  pursuant to this  Section D5.3 shall be
delayed,  reduced,  offset or  affected in any way by (i) the  existence  of any
insurance  policy or  policies  which may  cover or  result  in the  payment  of
insurance  proceeds  with  respect to such Loss;  (ii) the pendency of any claim
filed under any such insurance  policy or asserted against any third party which
may result in the payment of insurance  proceeds or other  amounts in respect of
such Loss; or (iii) any other possibility or potential for payment in respect of
such Loss by any person other than Operator;  provided, however; that (x) if any
amount is  received  by an Owner  Indemnified  Party in the form of payment of a
type  contemplated by clause (i), (ii) or (iii) of this Section D5.3(e) prior to
the time that  Operator is required to pay such amount  pursuant to this Section
D5.3,  the amount  required to be paid  pursuant to this  Section  D5.3 shall be
reduced to the extent of such amount theretofore actually received by such Owner
Indemnified  Party and (y) if any  amount is  received  by an Owner  Indemnified
Party in the form of  payment of -a type  contemplated  by clause  (i),  (ii) or
(iii) of this Section D5.3(e)  subsequent to the time that a portion or the full
amount of a Loss has been paid to such Owner  Indemnified Party by Operator with
the result that such Owner  Indemnified Party has actually received an aggregate
amount in excess of the full amount of such Loss, such Owner  Indemnified  Party
shall,  promptly after receipt of a written request therefor from Operator,  but
in any case within five (5) Business  Days  thereafter,  repay to Operator  such
amount or the portion  thereof which  resulted in such Owner  Indemnified  Party
receiving  an amount in excess of the full amount of such Loss,  as the case may
he.

     (f)   Failure   of  an  Owner   Indemnified   Party  to  Comply   with  the
Indemnification Procedures. Notwithstanding any other provision of this Appendix
D,  failure  of  an  Owner  Indemnified  Party  to  comply  with  the  foregoing
indemnification  procedures,  including  but not limited to the time periods set
forth for compliance  herein,  shall relieve Operator of its obligations to make
any payment until such failure to comply by an Owner  Indemnified Party has been
remedied to the reasonable satisfaction of Operator; provided, however, that the
failure by an Owner  Indemnified Party to take an action within a specified time
period shall only toll Operator's  obligation to make payments  hereunder during
such failure to comply and shall not prevent such Owner  Indemnified  Party from
perfecting a valid and enforceable claim to indemnification once such action has
been taken.

     D6. Insurance in Respect of Fuel

     D6.1 Operator to Maintain Insurance Coverage.

     (a)  Operator  will,  for the  mutual  benefit  of  Operator  and the Owner
          Indemnified Parties, obtain and maintain during the entire Term:

          (i)  Policies of  insurance,  with  respect to the Fuel,  insuring the
               Fuel  against  loss or damage by fire,  lightning  and such other
               perils  as  are  included  in  a  standard   "all-risk"   policy,
               including,  without limitation,  flood and earth movement,  extra
               expense, riot and civil commotion, vandalism, malicious mischief,


                                      D-8




               burglary and theft. Such insurance shall be in an amount equal to
               the full  replacement  cost of the Fuel.  The  Owner  Indemnified
               Parties shall be included as additional insureds and shall, where
               applicable, be included as loss payees;

          (ii) Comprehensive   or  Commercial   General   Liability   insurance,
               including broad form property damage,  blanket contractual,  acts
               of  contractors/subcontractors,  sudden and accidental  pollution
               and personal injury  coverages and containing  minimum limits per
               occurrence of $100,000,000  and $200,000,000 in the aggregate for
               any policy year;

          (iii) Insurance covering the replacement cost of any Fuel which may be
               the  subject  of a Fuel Loss or the cost of  purchasing  power in
               substitution  for the  power  which  would  have  been  generated
               through the use of such Fuel, whichever is greater;

          (iv) Worker's compensation  insurance with respect to any employees of
               Operator,  as required  by any  governmental  authority  or legal
               requirement  and  employer's  liability  coverage  with limits of
               $100,000,000;

          (v)  To the extent  that such  coverage is not  otherwise  provided by
               insurance maintained by Operator,  during any period of repair or
               restoration  of the Plant or any other location at which the Fuel
               is regularly stored or used, builder's "all risk" insurance in an
               amount  equal to not less  than the full  insurable  value of the
               Fuel insuring against such risks (including,  without limitation,
               fire and extended  coverage)  as Owner may  request,  in form and
               substance acceptable to Owner, and, in addition,  provision shall
               be made by  Operator to require any  contractor  performing  such
               repair or restoration to maintain comparable coverage;

          (vi) If it is  determined  by an  environmental  state and/or  federal
               agency that a site must be cleaned up  Operator  and/or any Owner
               Indemnified  Party with an estimated  aggregate cost in excess of
               $10,000,000,   Clean-up   Cost  Cap  (CCC)   coverage   providing
               catastrophic  protection  for  cost  overruns  on  clean-up  cost
               estimates associated with any Fuel-Related Activity and resulting
               known  liabilities in any  determined  Area of Concern as well as
               new  found  conditions   within  the  Areas  of  Concern  with  a
               deductible not in excess of 10% of such cost estimates;

          (vii) Pollution  Legal  Liability  (PLL),  if available from companies
               with a claims  paying  ability  rating of "A" or better by Best's
               Rating  Guide,  covering  bodily  injury,   property  damage  and
               clean-up  costs arising from new  conditions  arising from future
               spills/releases from any Fuel-Related Activity; and

          (viii) Such  other  insurance  as may from time to time be  reasonably
               required by Owner in order to protect the  interests of the Owner
               Indemnified Parties.

          (b) Self-Insurance,  Etc. -Notwithstanding the requirements of Section
     D6.1(a)  hereof,  it is agreed that (i) Operator may self-insure any of the
     above  coverages to the extent that it is doing so on the Effective Date or
     to such  greater  extent as may be approved  in writing by Owner and,  with
     such terms and in such  amounts,  as a prudent  company  with the same debt


                                      D-9




     rating as  KeySpan  Corporation  would  maintain  with  respect  to similar
     properties  and a  similar  business,  and,  in any  event,  will  maintain
     insurance on all its property of a character  usually  insured by a company
     engaged in the same or a similar business  similarly  situated against loss
     or damage of the kinds and in the amounts  customarily  insured  against by
     such  companies,  and carry or cause to be carried,  with such  insurers in
     customary  amounts,  such  other  insurance,   including  public  liability
     insurance  as is  usually  carried  by  companies  engaged in the same or a
     similar business similarly situated; provided, however, that if at any time
     KeySpan  Corporation's  debt ratings fall below minimum investment grade as
     rated by both  Standard  and Poors and by  Moody's,  Operator  shall not be
     permitted to self-insure  pursuant to this Section  D6.1(b) and shall fully
     comply with the  requirements  of Section D6.1(a) hereof within ninety (90)
     days, except to the extent that Owner has otherwise agreed in writing.

     D6.2  Requirements  for  All  Policies.  All  policies  of  insurance  (the
"Policies")  required  pursuant to this  Section D6: (i) if they cover  property
damage to any Fuel,  shall contain a "Replacement  Cost  Endorsement"  and shall
have a deductible  no greater than  $3,000,000  or twenty  percent (20%) of such
replacement cost, whichever is less unless otherwise agreed by Owner; (ii) shall
be issued by companies  with a claims paying  ability rating of "A" or better by
Best's Rating  Guide;  (iii) to the extent that it covers loss of, or damage to,
Fuel,  shall name Owner,  as its  interest  may  appear,  as a loss payee or the
equivalent,  naming Owner as the person to which (or at the  direction of which)
all payments made by such insurance  company shall be paid; (iv) shall contain a
waiver of  subrogation  against Owner;  (vi) shall be maintained  throughout the
Term without  additional  cost to Owner;  (vii) shall contain such provisions as
Owner  deems  reasonably  necessary  to  protect  the  interests  of  the  Owner
Indemnified Parties, including, without limitation,  endorsements providing that
neither  Operator,  any Owner  Indemnified  Party nor any other party shall be a
co-insurer  under said Policies,  and that the Owner  Indemnified  Parties shall
receive at least  thirty  (30) days prior  written  notice of any  modification,
reduction or cancellation;  and (viii) shall he reasonably  satisfactory in form
and substance to Owner and shall be approved by Owner as to, amounts, form, risk
coverage, deductibles, loss payees and insureds.

     D6.3 Payment of Insurance  Premiums.  To the extent that  Operator does not
self-insure pursuant to Section D6.1(b) hereof,  Operator shall pay the premiums
for such Policies (the "Insurance  Premiums") as the same become due and payable
and shall furnish to Owner  evidence of the renewal of each of the Policies with
receipts  for the payment of the  Insurance  Premiums or other  evidence of such
payment  reasonably  satisfactory  to Owner.  If Operator  does not furnish such
evidence and receipts at least thirty (30) days  subsequent to the expiration of
any  expiring  Policy,  then Owner may  procure,  but shall not be  obligated to
procure,  such insurance and pay the Insurance Premiums  therefor,  and Operator
agrees to reimburse  Owner for the cost of such Insurance  Premiums  promptly on
demand.  Within thirty (30) days after request by Owner,  Operator  shall obtain
such  increases  in  the  amounts  of  coverage  required  hereunder  as  may be
reasonably requested by Owner, taking into consideration changes in the value of
money over time,  changes in  liability  laws,  changes in prudent  customs  and
practices.  The  payment by  Operator  of  Insurance  Premiums  pursuant to this
Section  D6.3 shall not in any way  reduce or offset  the amount of any  payment
which Operator is required to make in respect of any Loss pursuant to Section D5
hereof.


                                      D-10






                                  APPENDIX "E"
                                  ------------

                        PROVISIONS REQUIRED BY STATE LAW
                        --------------------------------


NON-ASSIGNMENT  CLAUSE. In accordance with Section 138 of the State Finance Law,
this  Agreement  may not be  assigned  by the  Operator  or its right,  title or
interest therein assigned,  transferred,  conveyed, sublet or otherwise disposed
of without the previous consent, in writing, of Owner and any attempts to assign
this  Agreement  without the  Owner's  written  consent  are null and void.  The
Operator may, however, assign its right to receive payment without Owner's prior
written consent unless this Agreement  concerns  Certificates  of  Participation
pursuant to Article 5-A of the State Finance Law.

COMPTROLLER'S  APPROVAL.  In  accordance  with Section 112 of the New York State
Finance  Law (the  "State  Finance  Law"),  this  Agreement  shall not be valid,
effective  or  binding  upon  Owner  until it has  been  approved  by the  State
Comptroller and filed in his office.

WORKER'S  COMPENSATION  BENEFITS.  In  accordance  with Section 142 of the State
Finance Law, this Agreement  shall be void and of no force and effect unless the
Operator  provides and maintains  coverage during the life of this Agreement for
the benefit of such employees as are required to be covered by the provisions of
the Workers' Compensation Law.

NON-DISCRIMINATION  REQUIREMENTS. In accordance with Article 15 of the Executive
Law (also  known as the  Human  Rights  Law) and all  other  New York  State and
Federal statutory and constitutional non-discrimination provisions, the Operator
shall not discriminate  against any employee or applicant for employment because
of race, creed,  color, sex, national origin, age,  disability,  marital status,
sexual orientation,  genetic predisposition or carrier status.  Furthermore,  in
accordance  with Article 220-e of the New York Labor Law, and to the extent that
this  Agreement  shall be performed  within the State of New York,  the Operator
agrees that neither it nor its  subcontractors  shall, by reason of race, creed,
color,   disability,   sex,  national  origin,   sexual   orientation,   genetic
predisposition  or carrier  status;  (a)  discriminate in hiring against any New
York State  citizen who is qualified  and  available to perform the work; or (b)
discriminate  against or  intimidate  any employee for the  performance  of work
under this Agreement.

WAGE AND HOURS  PROVISIONS.  If this Agreement is a public work contract covered
by Article 8 of the Labor Law or a building  service contract covered by Article
9  thereof,   neither  the  Operator's   employees  nor  the  employees  of  its
subcontractors  may be  required  or  permitted  to work more than the number of
hours or days stated in said statutes, except as otherwise provided in the Labor
Law and as set forth in prevailing wage and supplement  schedules  issued by the
State Labor Department.  Furthermore,  the Operator and its subcontractors  must
pay at  least  the  prevailing  wage  rate  and pay or  provide  the  prevailing
supplements,  including the premium rates for overtime pay, as determined by the
State Labor Department in accordance with the Labor Law.


                                      E-1




NON-COLLUSIVE  BIDDING  CERTIFICATION.  In  accordance  with Section 2878 of the
Public  Authorities Law, if this Agreement was awarded based upon the submission
of bids,  the  Operator  warrants,  under  penalty of perjury,  that its bid was
arrived at independently and without collusion aimed at restricting competition.
The Operator further warrants that, at the time the Operator  submitted its bid,
an  authorized  and  responsible  person  executed and  delivered to the Owner a
non-collusive bidding certification on the the Manager's behalf.

INTERNATIONAL BOYCOTT PROHIBITION. In accordance with Section 220-f of the Labor
Law and  Section  139-h of the State  Finance  Law,  if this  Agreement  exceeds
$5,000,  the Operator agrees,  as a material  condition of this Agreement,  that
neither the Operator nor any  substantially  owned or affiliated  person,  firm,
partnership  or  corporation  has  participated,  is  participating,   or  shall
participate  in an  international  boycott in  violation  of the federal  Export
Administration  Act of 1979 (50 USC app.  Sections 2401 et seq.) or  regulations
thereunder.  If the Manager, or any of the aforesaid  affiliates of the Manager,
is convicted or is otherwise  found to have  violated  said laws or  regulations
upon the final  determination  of the United States  Commerce  Department or any
other  appropriate  agency of the United States  subsequent to this  Agreement's
execution,  such contract,  amendment or modification  thereto shall be rendered
forfeit and void. The Operator shall so notify the State Comptroller within five
(5) business days of such  conviction,  determination  or  disposition of appeal
(2NYCRR 105.4).

SET-OFF RIGHTS.  Owner shall have all of its common law, equitable and statutory
rights of set-off.  These rights shall  include,  but not be limited to, Owner's
option to withhold  for the  purposes of set-off any moneys due to the  Operator
under this  Agreement  up to any  amounts  due and owing to Owner with regard to
this Agreement, any other contract with Owner, including any contract for a term
commencing  prior to the term of this Agreement,  plus any amounts due and owing
to Owner for any other reason including,  without limitation, tax delinquencies,
fee delinquencies or monetary penalties  relative thereto.  Owner shall exercise
its set-off rights in accordance with normal State practices including, in cases
of set-off  pursuant to an audit,  the  finalization of such audit by Owner, its
representatives, or the State Comptroller.

RECORDS.  The Operator shall establish and maintain complete and accurate books,
records,   documents,   accounts  and  other  evidence  directly   pertinent  to
performance under this Agreement (hereinafter, collectively, "the Records"). The
Records  must be kept for the  balance of the  calendar  year in which they were
made and for six (6) additional years  thereafter.  The State  Comptroller,  the
Attorney  General  and any other  person  or entity  authorized  to  conduct  an
examination, as well as the agency or agencies involved in this Agreement, shall
have  access to the Records  during  normal  business  hours at an office of the
Operator  within the State of New York or, if no such office is available,  at a
mutually agreeable and reasonable venue within the State, for the term specified
above for the purposes of  inspection,  auditing  and copying.  Owner shall take
reasonable steps to protect from public  disclosure any of the Records which are
exempt  from  disclosure  under  Section  87 of the  Public  Officers  Law  (the
"Statute")  provided  that:  (i) the Operator  shall timely  inform the Owner in
writing, that said records should not be disclosed;  and (ii) said records shall
be  sufficiently  identified;  and (iii)  designation  of said records as exempt
under the Statute is reasonable.  Nothing contained herein shall diminish, or in
any way  adversely  affect,  the State's  right to  discovery  in any pending or
future litigation.


                                      E-2




EQUAL EMPLOYMENT FOR MINORITIES AND WOMEN. In accordance with Section 312 of the
New  York  Executive  Law:  (i) the  Operator  shall  not  discriminate  against
employees or applicants for employment because of race, creed,  color,  national
origin,  sex, age,  disability,  marital  status,  sexual  orientation,  genetic
predisposition  or  carrier  status and shall  undertake  or  continue  existing
programs of  affirmative  action to ensure that minority group members and women
are afforded equal employment opportunities without discrimination ("affirmative
action"  shall  mean  recruitment,   employment,   job  assignment,   promotion,
upgradings, demotion, transfer, layoff, or termination and rates of pay or other
forms of  compensation);  (ii) at the request of the Owner,  the Operator  shall
request each employment  agency,  labor union, or authorized  representative  of
workers  with  which  it has a  collective  bargaining  or  other  agreement  or
understanding, to furnish a written statement that such employment agency, labor
union or  representative  will not  discriminate  on the  basis of race,  creed,
color,   national  origin,  sex,  age,   disability,   marital  status,   sexual
orientation,  genetic  predisposition  or carrier  status and that such union or
representative  will  affirmatively  cooperate  in  the  implementation  of  the
Manager's  obligations  herein;  and  (iii) the  Operator  shall  state,  in all
solicitations or advertisements for employees,  that, in the performance of this
Agreement,   all  qualified   applicants  will  be  afforded  equal   employment
opportunities  without  discrimination  because of race, creed, color,  national
origin,  sex, age,  disability,  marital  status,  sexual  orientation,  genetic
predisposition  or carrier status.  The Operator shall include the provisions of
(i),  (ii) and (iii)  above,  in every  subcontract  over  twenty-five  thousand
dollars  ($25,000.00)  for  the  construction,  demolition,  replacement,  major
repair, renovation, planning or design of real property and improvements thereon
(the "Work") except where the Work is for the beneficial use of the Manager.

CONFLICTING  TERMS.  In the  event  of a  conflict  between  the  terms  of this
Agreement (including any and all attachments thereto and amendments thereof) and
the terms of this Appendix E, the terms of this Appendix E shall control.

GOVERNING LAW. This Agreement  shall be governed by the laws of the State of New
York except where the Federal supremacy clause requires otherwise.

LATE PAYMENT.  Timeliness of payment and any interest to be paid to the Operator
for late payment shall be governed by Section 2880 of the Public Authorities Law
and the guidelines adopted by Owner thereto.

PROHIBITION  ON PURCHASE OF  TROPICAL  HARDWOODS.  The  Operator  certifies  and
warrants that all wood products to be used under this contract  award will be in
accordance with, but not limited to, the  specifications and provisions of State
Finance Law ss.165 (Use of Tropical  Hardwoods) which prohibits purchase and use
of  tropical  hardwoods,  unless  specifically  exempted,  by the  State  or any
governmental  agency or political  subdivision  or public  benefit  corporation.
Qualification for an exemption under this law will be the  responsibility of the
Operator to establish to meet with the approval of the State.

In  addition,  when any portion of this  Agreement  involving  the use of woods,
whether supply or  installation,  is to be performed by any  subcontractor,  the
Operator  will  indicate  and certify in the  submitted  bid  proposal  that the
subcontractor  has been informed and is in compliance  with  specifications  and
provisions  regarding  use of tropical  hardwoods  as  detailed in ss.165  State


                                      E-3




Finance Law.  Any such use must meet with the approval of the State;  otherwise,
the bid may not be considered responsive. Under bidder certifications,  proof of
qualification  for exemption will be the  responsibility of the Operator to meet
with the approval of the State.


MACBRIDE  FAIR  EMPLOYMENT  PRINCIPLES.  In  accordance  with the MacBride  Fair
Employment  Principles  (Chapter 807 of the New York Laws of 1992), the Operator
hereby  stipulates  that the Operator  either (i) has no business  operations in
Northern  Ireland,  or (ii) shall take lawful steps in good faith to conduct any
business  operations in Northern  Ireland in  accordance  with the MacBride Fair
Employment  Principles  (as  described  in  Article  165 of,  the New York State
Finance Law), and shall permit  independent  monitoring of compliance  with such
principles.

OMNIBUS  PROCUREMENT ACT OF 1992. It is the policy of New York State to maximize
opportunities  for the  participation  of New York State  business  enterprises,
including   minority   and   women-owned   business   enterprises   as  bidders,
subcontractors  and suppliers on its procurement  contracts.  Information on the
availability of New York State subcontractors and suppliers is available from:

                  NYS Department of Economic Development
                  Division for Small Business
                  One Commerce Plaza
                  Albany, New York 12245.

          A directory of certified minority and women-owned business enterprises
     is available from:

                  NYS Department of Economic Development
                  Minority and Women's Business Development Division
                  One Commerce Plaza
                  Albany, New York 12245

The Omnibus Procurement Act of 1992 requires that by signing this Agreement, the
Operator certifies that:

(a)  The  Operator has made  commercially  reasonable  efforts to encourage  the
     participation  of New York State  Business  Enterprises  as  suppliers  and
     subcontractors,  including  certified  minority  and  woman-owned  business
     enterprises,  on this project,  and has retained the documentation of these
     efforts to be provided upon request to the State;

(b)  The Operator has complied  with the Federal Equal  Opportunity  Act of 1972
     (P.L. 92-261), as amended; and

(c)  The  Operator  agrees to make  commercially  reasonable  efforts to provide
     notification  to New York State  residents of employment  opportunities  on
     this  Project  through  listing  any such  positions  with the Job  Service
     Division  of the New York State  Department  of Labor,  or  providing  such


                                      E-4




     notification  in such  manner as is  consistent  with  existing  collective
     bargaining  contracts or agreements.  The Operator agrees to document these
     efforts and to provide said documentation to the State upon request.

(d)  The Operator  acknowledges that the State may seek to obtain offset credits
     from  foreign  countries  as a  result  of this  Agreement  and  agrees  to
     cooperate with the State in these efforts.

RECIPROCITY  AND SANCTIONS  PROVISIONS.  The Operator is hereby notified that if
its  principal  place of business is located in a state that  penalizes New York
State vendors, and if the goods or services it offers are substantially produced
or performed outside New York State, the Omnibus Procurement Act 1994 amendments
(Chapter 684, Laws of 1994) require that the Operator be denied  contracts which
it would otherwise obtain.

PURCHASES OF APPAREL.  In  accordance  with State  Finance Law 162 (4-a),  Owner
shall not  purchase  any apparel  from any  contractor  unable or  unwilling  to
certify  that:  (i)  such  apparel  was  manufactured  in  compliance  with  all
applicable labor and occupational  safety laws,  including,  but not limited to,
child labor laws,  wage and hours laws and workplace  safety laws,  and (ii) the
Operator will supply,  prior to or on the Contract Date, the names and addresses
of each  subcontractor and a list of all manufacturing  plants to be utilized by
the Manager.

CERTIFICATION  OF COMPLIANCE  WITH EXECUTIVE  ORDER 127. The Operator  certifies
that all  information  provided to Owner with respect to Executive  Order Number
127 is complete, true, and accurate.

OPTIONAL  TERMINATION  BY THE  AUTHORITY.  Owner reserves the right to terminate
this  Agreement  in the event it is found  that the  certification  filed by the
Operator in accordance with New York State Executive Order Number 127, signed by
Governor  Pataki on June 16,  2003,  was  intentionally  false or  intentionally
incomplete.  Upon such  finding,  Owner may  exercise its  termination  right by
providing  written  notification  to the Operator in accordance with the written
notification terms of this Agreement.

CONTINGENT  FEES. The Operator hereby certifies and agrees that (a) the Operator
has not  employed or retained  and will not employ or retain any  individual  or
entity for the  purpose of  soliciting  or  securing  any Owner  contract or any
amendment or modification thereto pursuant to any agreement or understanding for
receipt of any form of  compensation  which in whole or in part is contingent or
dependent  upon the award of any such contract or any amendment or  modification
thereto; and (b) the Operator will not seek or be paid an additional fee that is
contingent or dependent upon the completion of a transaction by Owner.


                                      E-5












                                    Exhibit D
                                    ---------

                    Form of Power Supply Agreement Amendment
                    ----------------------------------------















                                      D-1






                                                                     FINAL COPY


           Exhibit D to Second Option and Purchase and Sale Agreement






                                     [THIRD]

                                    AMENDMENT

                             Dated as of [_________]

                                       to



                             POWER SUPPLY AGREEMENT

                                     between

                          LONG ISLAND LIGHTING COMPANY

                                       and

                             KEYSPAN GENERATION LLC

                                   Dated as of

                                  June 26, 1997







     This [THIRD]  AMENDMENT  (the  "Amendment")  is made and entered into as of
[___________],  by and between LONG ISLAND  LIGHTING  COMPANY  d/b/a LIPA, a New
York  corporation  ("LIPA"),  and  KEYSPAN  GENERATION  LLC, a New York  limited
liability company ("GENCO"),  to the Power Supply Agreement, by and between LIPA
and GENCO,  dated as of June 26, 1997 (as  amended,  supplemented  or  otherwise
modified from time to time, the "PSA").

                                    RECITALS

     WHEREAS,  LIPA and GENCO are parties to Second Option and Purchase and Sale
Agreement, dated as of March 22, 2007 (the "Second Option Agreement"),  pursuant
to which LIPA was granted an option to purchase the Shoreham generating facility
and  certain  related  assets (the  "Shoreham  Plant")  and/or the Wading  River
generating facility and certain related assets (the "Wading River Plant") on the
terms and subject to the conditions set forth therein;

     WHEREAS, LIPA and GENCO are also parties to an Option and Purchase and Sale
Agreement, dated as of January 1, 2006 (the "First Option Agreement"),  pursuant
to which LIPA was  granted an option to  purchase  the Far  Rockaway  generating
facility and certain  related assets (the "Far Rockaway  Plant") and/or the E.F.
Barrett  generating  facility  and certain  related  assets  (the "E.F.  Barrett
Plant") on the terms and conditions set forth therein; and

     WHEREAS, LIPA has exercised its option under the Second Option Agreement to
purchase [the Shoreham Plant] [and] [the Wading River Plant]; and

     WHEREAS,  as a condition to the purchase of the Purchased  Assets under the
Second Option Agreement,  LIPA and GENCO are entering into this Amendment to the
PSA to reflect the purchase of the Purchased Assets.

     NOW, THEREFORE,  in consideration of the foregoing and the mutual covenants
and  agreements   hereinafter   set  forth  and  for  other  good  and  valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto agree as follows:

                                    ARTICLE 1

                                   DEFINITIONS

     Section 1.1. Definitions.  All capitalized terms used in this Amendment and
not otherwise defined shall have the meanings assigned to them in the PSA.

                                    ARTICLE 2

                                AMENDMENTS TO PSA

     Section 2.1.  Amendment to Article 1 of the PSA. (a) Article 1.1 of the PSA
is hereby amended by inserting the following new  definitions in the appropriate
alphabetical order:


                                       1




     "Second  Option  Agreement"  means the Second  Option and Purchase and Sale
     Agreement,  dated as of March 22, 2007 between LIPA and GENCO,  as amended,
     supplemented or otherwise modified from time to time.

     "Shoreham Plant" means the Shoreham  combustion turbine Units Nos. 1 and 2,
     consisting  of a 50 MW GE  Frame 7  turbine  and a 20 MW  Pratt  &  Whitney
     turbine,  respectively,  together  with the related  plant site and certain
     adjacent  real  estate  parcels,  as more  fully  described  in the  Option
     Agreement.

     "[Third]  Amendment"  means the  Amendment to this  Agreement,  dated as of
     [________].

     "Wading River Plant" means the Wading River gas turbine Units Nos. 1, 2 and
     3, each  consisting  of an 80 MW GE Frame 7EA  turbine,  together  with the
     related plant site and certain adjacent real estate parcels,  as more fully
     described in the Second Option Agreement.

     (b) If definitions  have  previously been added to Article 1 of the PSA for
"LIPA  Generating  Facilities" and "Step-Up  Percentage,"  such  definitions are
amended to read as set forth below. If such definitions have not previously been
added to the PSA,  Article 1.1 of the PSA is amended by inserting  the following
new definitions in the appropriate alphabetical order:

     "LIPA Generating  Facilities" means the electric generating  facilities and
     appurtenant  facilities  purchased  by LIPA  from  GENCO,  which  as of the
     effective date of the [Third]  Amendment  [is/are] [the E.F. Barrett Plant]
     [,] [the ICUs] (,) [the Far  Rockaway  Plant] [,] [the  Shoreham  Plant] [,
     and] [the Wading River Plant].

     "Step-Up  Percentage" means the step-up in the tax basis of each Generating
     Facility's tax basis  expressed as a percentage of the total step-up in the
     tax bases of  Generating  Facilities  that were recorded as a result of the
     sale of the  Genco  assets to  KeySpan.  For the  [E.F.  Barrett  Plant the
     percentage  shall be 10.87%;] [for the Far Rockaway  Plant,  the percentage
     shall be 4.05%;]  [for the ICUs the  percentage  shall be  2.43%;][for  the
     Shoreham Plant,  the percentage  shall be 1.19%,] [and for the Wading River
     Plant, the percentage shall be 16.60%.]"

     (c) The definitions of "Generating  Facilities"  and  "Generating  Facility
Sites" in Article 1 of the PSA are hereby  amended by deleting such  definitions
in their entirety and inserting in lieu thereof the following new definitions:

     "Generating  Facilities" means the electric generating  facilities owned by
     GENCO as of March 19, 1997 (but excluding the LIPA Generating  Facilities),
     including, but not limited to: (a) all systems,  structures,  equipment and
     appurtenances  associated  with each  Generating  Facility's  operation and
     forming a part thereof; (b) permanent  administrative  offices and building
     structures housing Generating Facility equipment; site improvements such as
     roads, drainage, fencing and landscaping; and (c) structures, pipelines and


                                       2




     equipment for: (i) the delivery of Fuel; (ii) the transport of water, waste
     water and other waste  disposal;  and (iii) other  materials,  supplies and
     commodities  required for the Services.  A list of GENCO's generating units
     as of the effective date of the [Third]  Amendment is contained in Appendix
     C.

     "Generating  Facility  Sites"  means  each  parcel of land upon  which each
     existing  Generating  Facility is situated,  as well as the land contiguous
     thereto,  owned by  Genco as of March  19,  1997  (but  excluding  the LIPA
     Generating Facilities owned by LIPA as of the effective date of the [Third]
     Amendment).

     Section 2.2. Amendment to Section 2.6 of the PSA. Section 2.6 of the PSA is
hereby amended by deleting the first sentence  thereof and  substituting in lieu
thereof the following:

     "GENCO will use  reasonable  efforts,  in accordance  with Prudent  Utility
     Practice to maintain a DMNC level for the Generating Facilities of [3973 MW
     minus the following  amounts for each  generating  facility which is a LIPA
     Generating  Facility as of the Closing date  specified in the Second Option
     Agreement:   Far  Rockaway  Plant--110  MW;  E.F.  Barrett  Plant--386  MW;
     ICUs--281MW; Shoreham Plant--67 MW; and Wading River Plant--242 MW].

     Section  2.3  Amendment  to  Section  3.1.1 of the PSA.  Unless  previously
amended to reflect a transfer of  Generating  Facilities to LIPA under the First
Option Agreement, Section 3.1.1 of the PSA is hereby amended as follows:

(a)  by deleting the second  sentence  thereof and  substituting in lieu thereof
     the following:

     "This analysis would evaluate all available resource options, including the
     LIPA Generating  Facilities,  to meet the electric  energy  requirements of
     LIPA's Electricity Customers."

(b)  by deleting the fourth  sentence  thereof and  substituting in lieu thereof
     the following:

     "The IERP analysis is intended to be performed to determine the optimum mix
     of the LIPA Generating Facilities, the Generating Facilities, and purchased
     power  from other  sources  in an effort to  provide  the least cost mix of
     electricity  resources  including  demand side management (DSM) options for
     LIPA's  Electricity  Customers  while  observing  established   reliability
     criteria."

     Section  2.4.  Amendment  to Section  9.1.1 of the PSA.  Unless  previously
amended to reflect a transfer of  Generating  Facilities to LIPA under the First
Option  Agreement,  Section  9.1.1 of the PSA is hereby  amended  by adding  the
following new sentence at the end thereof.  If such sentence has previously been
added to the PSA, it shall be amended to read as follows:


                                       3




     "In  addition  to the  foregoing,  on or before  [_________],  GENCO  shall
     prepare  and  submit to LIPA for review  and  approval a revised  Five Year
     Budget Plan,  which shall  contain  fixed and variable  costs  developed by
     GENCO  in  calendar  year  2008 to  account  for the  fact  that  the  LIPA
     Generating Facilities owned by LIPA as of the effective date of the [Third]
     Amendment are no longer Generating Facilities."

     Section  2.5.  Amendment  to Section  9.1.2 of the PSA.  Unless  previously
amended to reflect a transfer of  Generating  Facilities to LIPA under the First
Option  Agreement,  Section  9.1.2 of the PSA is hereby  amended  by adding  the
following new sentence  after the first sentence  thereof.  If such sentence has
previously been added to the PSA, it shall be amended to read as follows:

     "On or before __________,  GENCO shall prepare and submit to LIPA a revised
     rolling Five Year Capital  Improvement Budget showing  incremental  capital
     expenditures and associated rate adjustments for the Generating  Facilities
     excluding the LIPA  Generating  Facilities as of the effective  date of the
     [Third] Amendment for LIPA's review and approval."

     Section 2.6. Amendment to Section 9.2 of the PSA. Unless previously amended
to reflect a transfer of  Generating  Facilities  to LIPA under the First Option
Agreement,  Section 9.2 of the PSA is hereby amended by adding the following new
sentence at the end thereof:

     "The parties  shall  establish  mutually  agreed upon  timelines  following
     LIPA's receipt of the revised rolling Five Year Capital  Improvement Budget
     for review and revision of the revised Five Year Capital Improvement Budget
     pursuant to the procedures set forth above."

     Section 2.7.  Amendment to Article 11.1 of the PSA. Section 11.1 of the PSA
is hereby  amended by deleting the LIPA  Generating  Facilities  and  associated
capacity  values from the Capacity  Ramp Down schedule and by amending the first
sentence of the second paragraph thereof to read as follows:

                  "The Ramp Down will be an aggregate potential reduction amount
                  of no greater than 1500 MW, less the amount of generating
                  capacity in the LIPA Generating Facilities."

     Section 2.8. Amendment to Appendix A of the PSA.

     (a)  Unless  previously   amended  to  reflect  a  transfer  of  Generating
Facilities  to LIPA under the First Option  Agreement,  Appendix A to the PSA is
hereby  amended  by  inserting  the  following  new  paragraph  (H) in Section I
thereof:

     "Notwithstanding  the foregoing  Section I, on and after the effective date
     of the [Third] Amendment, the Capacity Charge for the Generating Facilities
     (excluding  the  LIPA  Generating  Facilities)  shall be  re-determined  by
     removing the costs being  recovered  through the Capacity  Charge in effect
     for that Contract Year for the LIPA Generating Facilities.  The costs to be
     removed  will include the:  return on rate base  calculated  at the rate of
     7.17%  for each of the LIPA  Generating  Facilities  individually  less its
     share of the $7.120 million revenue credit;  depreciation charges; property


                                       4




     taxes  specifically  identified as  attributable  to the  appropriate  LIPA
     Generating Facilities; state and federal income taxes (including the effect
     of the  costs  of  removal);  and an  allocable  share  of  operations  and
     maintenance  expenses (net of contractual  synergy savings).  The allocable
     share of operations and maintenance  expenses to be attributable to each of
     the LIPA  Generating  Facility shall be determined by multiplying the Total
     Fixed  O&M Cost  Component  by the total  number  of full  time  equivalent
     employees  dedicated to the LIPA Generating  Facility  divided by the total
     number  of full  time  equivalent  employees  working  at each of the GENCO
     Generating  Facilities  covered under the PSA ("Allocated Fixed O&M Cost").
     The Total Fixed O&M Cost Component shall be determined by subtracting  from
     the sum of the Capacity Charge and the $7.120 million  revenue credit,  the
     following components:  property taxes,  depreciation,  return on rate base,
     state and federal income taxes  (including the effects of cost of removal),
     common assets recovery charge and the amortization of security costs.

     The share of the revenue credit  assignable to each of the LIPA  Generating
     Facilities shall be determined by multiplying  $7.120 million by the amount
     of the Step-Up Percentage for the Generating Facility."

     (b)  Unless  previously   amended  to  reflect  a  transfer  of  Generating
Facilities  to LIPA under the First Option  Agreement,  Appendix A to the PSA is
hereby  amended by inserting  the  following  new  paragraph  in Section  III(B)
thereof relating to the Tax True-Up. If such paragraph has previously been added
to the PSA, it is hereby amended to read as follows:

     "Notwithstanding  the  foregoing,  on and after the  effective  date of the
     [Third]  Amendment,  the base amount of property  taxes shall be revised by
     removing  the  base  amount  of  property  taxes  attributed  to  the  LIPA
     Generating Facilities that is included in the base amount of property taxes
     at the time of Closing (as defined in the Second Option Agreement)."

     (c)  Unless  previously   amended  to  reflect  a  transfer  of  Generating
Facilities  to LIPA under the First Option  Agreement,  Appendix A to the PSA is
hereby amended by inserting the following new paragraph in Section III(C) of the
PSA relating to the Tax True-Up.  If such paragraph has previously been added to
the PSA, it is hereby amended to read as follows:

     "(4) On and after the effective date of the [Third] Amendment, the Budgeted
     Incremental  Depreciation  Expense and the Budgeted Incremental Net Utility
     Plant shall be revised by removing  the Budgeted  Incremental  Depreciation
     Expenses and Budgeted  Incremental Net Utility Plant attributed to the LIPA
     Generating Facilities."

     (d)  Unless  previously   amended  to  reflect  a  transfer  of  Generating
Facilities  to LIPA under the First Option  Agreement,  Appendix A to the PSA is
hereby amended by deleting Section IV thereof relating to Reopeners.


                                       5




     (e)  Section  V of  Appendix  A to the  PSA  is  hereby  amended  as of the
effective date of the [Third]  Amendment by restatement of (i) the amount of the
Incremental  Synergy  Savings as set forth in Section  V.J.;  (ii) the base year
labor costs  (production) and base year benefit costs  (production) as set forth
in  the  Labor  Cost  Index  Adjustment  (Production)  and  Benefit  Cost  Index
Adjustment  (Production) as set forth in Section V.K., and (iii) base year labor
costs  (support) and base year benefit costs (support) as set forth in the Labor
Cost Index Adjustment  (Support) and Benefit Cost Index Adjustment  (Support) in
Section V.L., to reflect removal of the LIPA Generating Facilities.

     Section 2.9.  Amendment to Appendix B of the PSA.  Appendix B of the PSA is
hereby  amended as of the  effective  date of the [Third]  Amendment by deleting
from Table 1 thereof  each of the LIPA  Generating  Facilities  and the  amounts
associated with each of the LIPA Generating Facilities.

     Section 2.10.  Amendment to Appendix C of the PSA. Appendix C of the PSA is
hereby amended as of the effective date of the [Third] Amendment by deleting the
LIPA Generating Facilities and their associated name plate ratings from the list
of Generating Units.

     Section 2.11.  Amendment to Appendix E of the PSA. Appendix E of the PSA is
hereby amended as of the effective date of the [Third] Amendment by deleting the
LIPA Generating Facilities from the tables.

     Section 2.12.  Amendment to Appendix F of the PSA. Schedule F to the PSA is
hereby amended by inserting the following new paragraph  (VI). If such paragraph
has previously been added to the PSA, it is hereby amended to read as follows:

     "Upon the effective date of the [Third] Amendment, the original targets for
     (i)   the   DMNC   Incentive/Disincentive   and   (ii)   the   Availability
     Incentive/Disincentive,  shall be adjusted to reflect the targets for Genco
     Generating  Facilities as shown in the graph below. The incentive  maximums
     shall be reduced by __% [insert:  1.7% if only  Shoreham  Plant  purchased;
     6.1% if only Wading River Plant purchased;  7.8% if both Shoreham Plant and
     Wading River Plant are purchased]"



- ------------------------ -------------------------------------- -------------------------------------- ----------------------
                         [If only Shoreham                      [If only Wading River                  [If both Shoreham
                         Plant purchased]                       Plant purchased]                       Plant and Wading
                                                                                                       River Plant
                                                                                                       purchased]
- ------------------------ -------------------------------------- -------------------------------------- ----------------------
                                                                                             
Availability             94.1%                                  93.9%                                  93.9%
- ------------------------ -------------------------------------- -------------------------------------- ----------------------
DMNC                     3906 MW                                3731 MW                                3664 MW
- ------------------------ -------------------------------------- -------------------------------------- ----------------------



                                       6





                                    ARTICLE 3

                                  MISCELLANEOUS

     Section  3.1.  Effective  Date.  This  Amendment  shall be  effective  upon
satisfaction  of each of the following  conditions (the date upon which all such
conditions are satisfied,  the "Effective  Date"):  (i) the  consummation of the
sale  and  purchase  of the  Purchased  Assets  pursuant  to the  Second  Option
Agreement;  (ii)  approval of this  Amendment  from the New York State  Attorney
General (as to form);  (iii) approval  (satisfactory  to LIPA and Genco) of this
Amendment  from the New York  State  Comptroller;  and (iv) the  Federal  Energy
Regulatory  Commission  shall have permitted the Amendment to become  effective.
The  conditions  set forth in items (ii),  (iii) and (iv) above are  hereinafter
referred to as the  "Approvals."  Upon receipt of all the Approvals,  LIPA shall
provide Genco with a copy of each such Approval.

     Section  3.2.  Affirmation  of  Representations.  The  representations  and
warranties  of GENCO  set forth in  Section  21.9.1 of the PSA shall be true and
correct in all material  respects as of the Effective Date. The  representations
and  warranties of LIPA set forth in Section 21.9.2 of the PSA shall be true and
correct in all material respects as of the Effective Date.

     Section 3.3. Miscellaneous.

     (a) This Amendment  provides for certain values used to calculate the rates
and charges  payable by LIPA to be determined by removing from the values in the
PSA in effect prior to the  Effective  Date of this  Amendment  certain  amounts
associated  with the LIPA Generating  Facilities.  The exact value to be used is
subject to (i) a final  determination  of whether the Shoreham Plant, the Wading
River  Plant,  or  both,  have  become  LIPA  Generating  Facilities,  and  (ii)
identification   of  values   properly   attributable  to  the  LIPA  Generating
Facilities.  The final values to be used in  calculating  such rates and charges
after the Effective Date shall be determined by mutual  agreement of the parties
no later than 30 days after the Effective Date.

     (b)  Except  as  amended  hereby,  the PSA shall  remain in full  force and
effect.  The parties shall  cooperate in  preparation of an amended and restated
PSA which  incorporates  the  provisions of the original PSA and all  amendments
thereto, including this Amendment to be effective as of the Effective Date.

     (c) This Amendment shall be governed,  including, without limitation, as to
validity, interpretation and effect, by the Laws of the State of New York.

     (d)  This  Amendment  may be  executed  in two or more  counterparts  which
together shall constitute a single agreement.


                                       7





     IN WITNESS  WHEREOF,  the parties have caused this Amendment to be executed
and delivered by their duly  authorized  officers or  representatives  as of the
date first above written.

                                                   LONG ISLAND LIGHTING COMPANY
                                                   d/b/a LIPA



                                                   By /s/ ____________________
                                                   Name:  [_________________]
                                                   Title: [_________________]



                                                   KEYSPAN GENERATION LLC



                                                   By /s/ ____________________
                                                   Name:  [_________________]
                                                   Title: [_________________]







                                       8










                                    Exhibit E
                                    ---------

                  Form of Energy Management Agreement Amendment
                  ---------------------------------------------











                                      E-1









                                                                    FINAL COPY

           Exhibit E to Second Option and Purchase and Sale Agreement








                                FOURTH AMENDMENT

                      Dated as of [_______________________]

                                       to



                           ENERGY MANAGEMENT AGREEMENT

                                     between

                          LONG ISLAND LIGHTING COMPANY

                                       and

                       KEYSPAN ENERGY TRADING SERVICES LLC

                                   Dated as of

                                  June 26, 1997







     This FOURTH  AMENDMENT  (the  "Amendment")  is made and entered  into as of
[___________],  by and between LONG ISLAND  LIGHTING  COMPANY  d/b/a LIPA, a New
York corporation  ("LIPA"),  and KEYSPAN ENERGY TRADING SERVICES LLC, a New York
limited liability company formerly known as MarketSpan Trading Services LLC (the
"Energy Manager"),  to the Energy Management Agreement,  by and between LIPA and
the Energy Manager, dated as of June 26, 1997, as previously amended as of March
29, 2002 and as of December [__], 2005 (the "EMA").

                                    RECITALS

     WHEREAS,  Energy Manager is responsible under the EMA, inter alia, for fuel
procurement,  delivery, storage, and management ("Fuel Management Services") for
the GENCO Generating  Facilities to meet the energy  generation  requirements of
the Electricity Customers;

     WHEREAS, LIPA and KeySpan Generation LLC are parties to a Second Option and
Purchase  and Sale  Agreement,  dated as of March 22, 2007 (the  "Second  Option
Agreement"),  pursuant  to which  LIPA was  granted  an option to  purchase  the
Shoreham  Plant (as defined in the Second  Option  Agreement)  and/or the Wading
River  Plant (as defined in the Second  Option  Agreement)  and certain  related
assets on the terms and subject to the conditions set forth therein;

     WHEREAS,  on [_____]  LIPA  exercised  its option  under the Second  Option
Agreement  to purchase  [the  Shoreham  Plant] [and] [the Wading River Plant] as
specified  in the Option  Notice (as  defined  in the Second  Option  Agreement)
delivered by LIPA under the Second Option Agreement (the "Purchased Assets");

     WHEREAS,  LIPA  and  [KEYSPAN  CORPORATION  SUBSIDIARY]   ("Operator")  are
contemporaneously entering into an Operation and Maintenance Agreement (the "O&M
Agreement")  pursuant to which LIPA will retain Operator to, among other things,
perform Fuel  Management  Services for the  Purchased  Assets upon the terms and
conditions set forth therein; and

     WHEREAS, as a condition to the consummation of the purchase and sale of the
Purchased Assets under the Second Option Agreement,  LIPA and the Energy Manager
are entering into this Amendment.

     NOW, THEREFORE,  in consideration of the foregoing and the mutual covenants
and  agreements   hereinafter   set  forth  and  for  other  good  and  valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto agree as follows:


                                       2




                                    ARTICLE 1

                                   DEFINITIONS

     Section 1.1. Definitions.  All capitalized terms used in this Amendment and
not otherwise defined shall have the meanings assigned to them in the EMA.

                                    ARTICLE 2

                                AMENDMENTS TO EMA

     Section 2.1.  Amendment to Section  3.2.1 of the EMA.  Section 3.2.1 of the
EMA is  hereby  amended  by  deleting  "$750,000"  in the 4th line  thereof  and
inserting in lieu thereof "$725,000". [If LIPA purchases only one of the Plants,
then the  $25,000  fee  reduction  will be pro rated  based  upon the fuel BTU's
purchased in the year prior to the exercise of the Second Option Agreement.]


                                    ARTICLE 3

                                  MISCELLANEOUS

     Section  3.1.  Effective  Date.  This  Amendment  shall be  effective  upon
satisfaction  of  the  following  conditions  (the  date  upon  which  all  such
conditions are satisfied,  the "Effective  Date"):  (i) the  consummation of the
sale  and  purchase  of the  Purchased  Assets  pursuant  to the  Second  Option
Agreement,  (ii) approval of this Amendment  (satisfactory to Energy Manager and
LIPA) from the New York State  Comptroller,  (iii) approval (as to form) of this
Amendment  from the New York  Attorney  General,  and (iv) if required in LIPA's
sole  judgment,  receipt of a private  letter  ruling from the Internal  Revenue
Service  that  this  Amendment  constitutes  a  "qualified  management  services
agreement"  under  the  Internal  Revenue  Code of  1986,  as  amended,  and the
regulations  thereunder.  The conditions set forth in items (ii), (iii) and (iv)
above are hereinafter referred to as the "Approvals".

     Section  3.2.  Affirmation  of  Representations.  The  representations  and
warranties of the Energy  Manager set forth in Section  13.11.1 of the EMA shall
be true and correct in all  material  respects  as of the  Effective  Date.  The
representations  and warranties of LIPA set forth in Section  13.11.2 of the EMA
shall be true and correct in all material respects as of the Effective Date.

     Section 3.4. Miscellaneous.  Except as amended hereby, the EMA shall remain
in full force and effect. This Amendment shall be governed,  including,  without
limitation, as to validity,  interpretation and effect, by the Laws of the State
of New York.  This Amendment may be executed in two or more  counterparts  which
together shall constitute a single agreement.


                                       3





     IN WITNESS  WHEREOF,  the parties have caused this Amendment to be executed
and delivered by their duly  authorized  officers or  representatives  as of the
date first above written.

                                          LONG ISLAND LIGHTING COMPANY
                                          d/b/a LIPA



                                          By ________________________
                                          Name:
                                          Title:



                                          KEYSPAN ENERGY TRADING SERVICES LLC



                                          By ________________________
                                          Name:
                                          Title:








                                       4







                                    Exhibit F
                                    ---------

                                  Form of Deed
                                  ------------

THIS INDENTURE, made the _____ day of _____________, in the year 200_

BETWEEN

KEYSPAN GENERATION LLC, a limited liability company organized and existing under
the laws of the  State of New  York,  c/o  KeySpan  Corporation,  One  Metrotech
Center, Brooklyn, New York 11201

party of the first part, and

LONG ISLAND  LIGHTING  COMPANY d/b/a LIPA, a corporation  organized and existing
under the laws of the State of New York and a  wholly-owned  subsidiary  of Long
Island Power  Authority,  a corporate  municipal  instrumentality  and political
subdivision  of the  State of New  York,  333  Earle  Ovington  Blvd,  Suite 403
Uniondale, NY 11553

party of the second part,

WITNESSETH,   that  for  good  and  valuable  consideration,   the  receipt  and
sufficiency of which are hereby acknowledged,  in consideration of the foregoing
and the mutual covenants and agreements  hereinafter set forth, the party of the
first part does hereby grant and release unto the party of the second part,  the
heirs or successors and assigns of the party of the second part forever,

ALL  that  certain  plot,  piece or  parcel  of land,  with  the  buildings  and
improvements thereon erected, situate, lying and being described as follows:

             SEE SCHEDULE A ATTACHED HERETO AND MADE A PART HEREOF.

TOGETHER with all right,  title and interest,  if any, of the party of the first
part in and to any streets and roads  abutting the above  described  premises to
the center lines thereof; TOGETHER with the appurtenances and all the estate and
rights of the party of the first  part in and to said  premises;  TO HAVE AND TO
HOLD the premises herein granted unto the party of the second part, the heirs or
successors and assigns of the party of the second part forever.

AND the party of the first part  covenants  that the party of the first part has
not done or suffered  anything whereby the said premises have been encumbered in
any way whatever,  except as set forth on Schedule B attached  hereto and made a
part hereof.

AND the party of the first part, in compliance  with Section 13 of the Lien Law,
covenants  that the party of the first part will receive the  consideration  for
this conveyance and will hold the right to receive such consideration as a trust
fund to be applied  first for the purpose of paying the cost of the  improvement
and will  apply the same  first to the  payment  of the cost of the  improvement
before using any part of the total of the same for any other  purpose.  The word
"party"  shall be construed as if it read  "parties"  whenever the sense of this
indenture so requires.

IN WITNESS WHEREOF,  the party of the first part has duly executed this deed the
day and year first above written.


IN PRESENCE OF:
                                             -----------------------------------

- --------------------------
WITNESS                                      -----------------------------------


                                      F-1






ACKNOWLEDGEMENT TAKEN IN NEW YORK STATE

State of New York, County                                            , ss:

On the            day of                in the year              ,
before me, the undersigned, personally appeared


                      , personally known to me or proved to me on the basis of ,
personally known to me or proved to me on the basis of satisfactory  evidence to
be the individual(s) whose name(s) is (are) subscribed to satisfactory  evidence
to be the  individual(s)  whose  name(s)  is  (are)  subscribed  to  the  within
instrument  and  acknowledged  to me that  he/she/they  executed the same in the
within  instrument and acknowledged to me that he/she/they  executed the same in
his/her/their  capacity(ies),  and  that by  his/her/their  signature(s)  on the
his/her/their  capacity(ies),  and  that by  his/her/their  signature(s)  on the
instrument,  the  individual(s),   or  the  person  upon  behalf  of  which  the
individual(s) instrument, the individual(s),  or the person upon behalf of which
the  individual(s)  acted,   executed  the  instrument.   acted,   executed  the
instrument.

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

ACKNOWLEDGEMENT BY SUBSCRIBING WITNESS
TAKEN IN NEW YORK STATE

State of New York, County of                       , ss:

On the             day of                   in the year              ,
before me, the undersigned, a Notary Public in and for said
State, personally appeared

            , the

subscribing  witness  to the  foregoing  instrument,  with whom I am  personally
acquainted,  who,  being by me duly sworn,  did depose and say that  he/she/they
reside(s) in

(if the place of residence is in a city, include the street and street number if
any,  thereof); that he/she/they know(s)

to be the  individual  described in and who executed the  foregoing  instrument;
that said subscribing witness was present and saw said

execute  the  same;   and  that  said  witness  at  the  same  time   subscribed
his/her/their name(s) as a witness thereto


                                      F-2






ACKNOWLEDGEMENT TAKEN IN NEW YORK STATE

State of New York, County                                            , ss:

On the            day of                in the year              ,
before me, the undersigned, personally appeared


                  , personally known to me or proved to me on the basis of ,
personally known to me or proved to me on the basis of satisfactory evidence to
be the individual(s) whose name(s) is (are) subscribed to satisfactory evidence
to be the individual(s) whose name(s) is (are) subscribed to the within
instrument and acknowledged to me that he/she/they executed the same in the
within instrument and acknowledged to me that he/she/they executed the same in
his/her/their capacity(ies), and that by his/her/their signature(s) on the
his/her/their capacity(ies), and that by his/her/their signature(s) on the
instrument, the individual(s), or the person upon behalf of which the
individual(s) instrument, the individual(s), or the person upon behalf of which
the individual(s) acted, executed the instrument. acted, executed the
instrument.

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

ACKNOWLEDGEMENT TAKEN OUTSIDE NEW YORK STATE

*State of           ,County           of           ,ss:

*(Or insert District of Columbia, Territory, Possession or
Foreign County)

On the             day of                           in the year          ,
, before me the undersigned  personally appeared

Personally known to me or proved to me on the basis of satisfactory  evidence to
be the individual(s)  whose name(s) is (are) subscribed to the within instrument
and  acknowledged  to me that  he/she/they  executed  the same in  his/her/their
capacity(ies),  that  by  his/her/their  signature(s)  on  the  instrument,  the
individual(s)  or the  person  upon  behalf  of which the  individual(s)  acted,
executed the instrument,  and that such  individual make such appearance  before
the undersigned in the


(add the city or political  subdivision  and the state or country or other place
the acknowledgement was taken).











                                   SCHEDULE A

                           [insert legal description]










                                      F-3






                                   SCHEDULE B

                            [insert title exceptions]










                                      F-4