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                                                                   EXHIBIT 10.35

                             STANDARD OFFER SERVICE

                            WHOLESALE SALES AGREEMENT

         THIS STANDARD OFFER SERVICE WHOLESALE SALES AGREEMENT ("Agreement")
dated as of October 29, 1999, is by and between THE CONNECTICUT LIGHT AND POWER
COMPANY ("CL&P" or "Buyer") and NRG POWER MARKETING INC. ("Seller"). The Seller
and Buyer together are the Parties and each individually is a Party to this
Agreement.
                                   WITNESSETH:
         WHEREAS, pursuant to Section 20(b) of Public Act 98-28, An Act
Concerning Electric Restructuring ("Act"), the Buyer must procure generation for
the purpose of providing Standard Offer Service to those end use consumers of
electricity within its traditional retail service area ("Retail Customers") that
do not or are unable to choose an Electric Supplier (as defined in Section 1(30)
of the Act);

         WHEREAS, by Order dated July 7, 1999, in Docket No. 99-03-36, the
Connecticut Department of Public Utility Control ("DPUC") approved, with certain
modifications, the Buyer's proposal to issue a competitive bid solicitation, or
Request For Proposals, for generation service to supply fifty percent of the
Buyer's Standard Offer Service Load ("the RFP");

         WHEREAS, the DPUC has retained J.P. Morgan Securities, Inc. ("J.P.
Morgan") to act as the exclusive agent to the DPUC to conduct the RFP;

         WHEREAS, J.P. Morgan carefully evaluated the responses to the RFP,
including the response submitted by the Seller, and advised that the Seller is a
qualified bidder pursuant to the RFP, and that the Seller's offer to supply a
portion of the Standard Offer Service Load meets the standards for selection in
the RFP, subject to negotiating an acceptable agreement to supply Standard Offer
Service;

         WHEREAS, this Agreement sets forth the rates, terms and conditions
under which the Seller will supply firm all-requirements service as necessary to
serve a specified share of the Buyer's aggregate retail load that takes Standard
Offer Service during the term of this Agreement;

         NOW, THEREFORE, in consideration of the premises and of the mutual
agreements herein contained, the Parties to this Agreement covenant and agree as
follows:

1.       DEFINITIONS


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         As used throughout this Agreement, the following terms shall have the
         definitions set forth in this Article 1.

         1.1      "BACK-UP SERVICE" means generation services provided to any
                  Retail Customer that has entered into a service contract with
                  an alternative supplier who, in turn, fails to provide
                  generation services to such Retail Customer other than due to
                  the Retail Customer's failure to pay for such services.

         1.2      "CONTRACT LOAD QUANTITY" means the portion of the Standard
                  Offer Service Load, defined as a monthly total, for which the
                  Seller is obligated to supply SOS Requirements Power pursuant
                  to Section 3.5 of this Agreement. The Contract Load Quantity
                  shall be calculated in accordance with Appendix A.

         1.3      "DELIVERY POINT" means any point on the NEPOOL PTF, or one or
                  more other points of interconnection between the Buyer's
                  transmission or distribution system and generating assets
                  owned or contracted for by the Seller, where Seller delivers
                  SOS Requirements Power to the Buyer, and at which point title
                  to and liability for electricity passes from the Seller to the
                  Buyer; provided, however, that the Seller shall assume all of
                  the risk that it will not obtain NEPOOL credit for power that
                  is not delivered to the NEPOOL PTF; and provided further that,
                  from the standpoint of the rights and benefits received by the
                  Buyer under this Agreement, all power delivered hereunder
                  shall be treated in the same manner as if the power had been
                  delivered to the NEPOOL PTF.

         1.4      "DELIVERY SERVICES" means the combination of Regional Network
                  Service ("RNS") over NEPOOL PTF acquired pursuant to the
                  NEPOOL Transmission Tariff, Local Network Service ("LNS") over
                  the Buyer's Non-Pool Transmission Facilities pursuant to the
                  NU Operating Companies open access transmission tariff, and
                  firm distribution services under the Buyer's distribution
                  service tariff that are provided by the Buyer for the delivery
                  of SOS Requirements Power for the Contract Load Quantity.
                  Delivery Services shall not include losses, congestion
                  charges, ancillary services or any ISO charges associated with
                  SOS Requirements Power, all of which shall be the
                  responsibility of the Seller.

         1.5      "ISO" means ISO New England, Inc., the Independent System
                  Operator for the NEPOOL Control Area, or any successor
                  thereto.

         1.6      "MATERIAL ADVERSE EFFECT" as used in Sections 10.1 and 10.2
                  means any change in, or effect on the Buyer or Seller after
                  the date of this Agreement and prior to the Effective Date
                  that is materially adverse to any of the transactions
                  contemplated hereby, other than (i) any change or effect
                  resulting from changes in the international, national,
                  regional or local wholesale or retail markets for electric
                  power; (ii) any change or effect


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                  resulting from changes in the international, national,
                  regional or local wholesale or retail markets for any fuel
                  used by the Seller; (iii) any change or effect resulting from
                  changes in the North American, national, regional or local
                  electric transmission systems; (iv) any change or effect
                  resulting from any action or inaction by a legislative or
                  regulatory authority, other than failure of any state or
                  federal governmental authority or commission to give any
                  consent or approval.

         1.7      "NEPOOL" means the New England Power Pool, the power pool
                  created by and operated pursuant to the provisions of the
                  Restated NEPOOL Agreement, as such agreement may be amended
                  from time to time.

         1.8      "NEPOOL CONTROL AREA" means the geographic area in which the
                  ISO is responsible for maintaining transmission lines within
                  established security limits and for balancing the sum of
                  internal generation and net interchange with the control area
                  load at all times in order to maintain system stability,
                  reliability and frequency within acceptable limits.

         1.9      "NEPOOL PTF" means the facilities categorized as Pool
                  Transmission Facilities as defined in the Restated NEPOOL
                  Agreement.

         1.10     "SOS REQUIREMENTS POWER" means the firm wholesale power that
                  Seller is obligated to deliver as defined in Section 3.1.

         1.11     "SOS SUPPLIER BILLING AMOUNT" means the monthly billing
                  quantity as determined in accordance with Appendix A.

         1.12     "STANDARD OFFER SERVICE" OR "SOS" means the electric service
                  provided in accordance with Section 20(b) of the Act and the
                  implementing rules and regulations of the DPUC to those Retail
                  Customers of the Buyer that do not purchase electricity from
                  an Electric Supplier.

         1.13     "STANDARD OFFER SERVICE LOAD" means the aggregate consumption
                  of all of CL&P's Standard Offer Service customers plus the
                  aggregate electric losses for delivery from a Delivery Point
                  to the end-use meters of all such customers as determined in
                  accordance with Appendix A.

         1.14     "TERM" means the period during which the Seller is obligated
                  to supply SOS Requirements Power pursuant to this Agreement.
                  The Term shall be for four (4) calendar years commencing at
                  the hour ending 0100 on January 1, 2000, and terminating at
                  the hour ending at 2400 on December 31, 2003, unless this
                  Agreement is terminated earlier pursuant to its terms.

         1.15     "TRANSITION AGREEMENT" means the Agreement for Transition
                  Power Supply between and among The Connecticut Light And Power
                  Company, NRG Energy, Inc., NRG Power Marketing Inc., Montville
                  Power LLC,


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                  Middletown Power LLC, Devon Power LLC, Norwalk Power LLC, and
                  Connecticut Jet Power LLC, pursuant to which the parties to
                  such agreement have arranged for the Buyer to acquire rights
                  to power between the date of closing of the sale of certain of
                  the Seller's generating assets to NRG Energy, Inc. and the
                  commencement of SOS, or for the Seller to acquire rights to
                  power from the date of commencement of SOS to the date of
                  closing of the sale of such CL&P generating assets to NRG
                  Energy, Inc.


2.       EFFECTIVE DATE AND FILING


         2.1      This Agreement shall be binding on the Parties as of the date
                  it is executed by both Parties ("Effective Date"); provided
                  that the provision of SOS Requirements Power by the Seller
                  shall be subject to obtaining necessary regulatory
                  authorizations for providing such service. Promptly after
                  execution hereof, the Seller shall file this Agreement with
                  the Federal Energy Regulatory Commission ("FERC") and shall
                  request that the FERC accept this Agreement for filing without
                  modification or condition, with service hereunder to be
                  effective commencing on January 1, 2000. The Buyer shall
                  support such filing. In addition, the Buyer shall, promptly
                  after execution hereof, submit this Agreement to the DPUC for
                  its approval as set forth in the RFP. The Seller shall bear
                  the cost of the FERC filing described above except for the
                  costs associated with the Buyer's intervention. The Buyer
                  shall bear the cost of the DPUC filing described above except
                  for the cost of the Seller's intervention. In each case, the
                  Party responsible for filing this Agreement shall request that
                  the regulatory agency give confidential treatment to the
                  pricing terms of this Agreement, which are the result of a
                  competitive solicitation held by the Buyer.


         2.2      In the event that the FERC or the DPUC grants conditional
                  approval of this Agreement, compliance with which would create
                  a material adverse economic impact on a Party, the adversely
                  affected Party may seek to negotiate such changes to this
                  Agreement as may be necessary to restore the balance of
                  consideration hereunder while simultaneously complying with
                  the FERC and DPUC orders. If the Parties are unable to
                  negotiate such changes that are satisfactory to each Party
                  within five (5) business days after the FERC or DPUC order,
                  either Party shall have the right to terminate this Agreement
                  by giving five (5) days written notice to the other Party, in
                  which event the Agreement shall be null and void and of no
                  further force and effect from and after the date of
                  termination. In the event that the FERC or the DPUC does not
                  accept the changes negotiated by the Parties hereunder, either
                  Party shall have the right to terminate this Agreement upon
                  thirty (30) days' written notice to the other Party, in which
                  event the Agreement shall be null and void and of no further
                  force and effect from and after the date of termination.


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         2.3      The applicable provisions of this Agreement shall continue in
                  effect after expiration of the Term (or earlier termination as
                  provided herein) to the extent necessary to provide for final
                  accounting, final billing, billing adjustments, resolution of
                  any billing dispute, resolution of any court or administrative
                  proceeding and final payments.


3.       SALE AND PURCHASE OF SOS REQUIREMENTS POWER


         3.1      SOS Requirements Power is the wholesale power delivered at the
                  Delivery Point(s) that is supplied at all times and in
                  quantities reflecting the full requirements for power of
                  Retail Customers purchasing Standard Offer Service from CL&P.
                  SOS Requirements Power shall be firm and shall vary in
                  quantity from minute to minute, hour to hour, day to day and
                  month to month based on the consumption patterns of Retail
                  Customers. SOS Requirements Power includes power supply and
                  ancillary services, in such amounts as are required for the
                  Buyer to serve the Contract Load Quantity plus losses at all
                  times throughout the Term. SOS Requirements Power includes all
                  of the power supply and ancillary services that are or may be
                  necessary to serve electrical load under the Restated NEPOOL
                  Agreement during the Term, including Energy, Installed
                  Capability, Operable Capability, Operating Reserves, Automatic
                  Generation Control, electrical losses, congestion charges
                  imposed under the NEPOOL Transmission Tariff, charges of the
                  ISO associated with NEPOOL membership and with serving the
                  Contract Load Quantity, and any future additions, deletions or
                  changes to the seven NEPOOL products (Energy, Installed
                  Capability, Operable Capability, 30-minute Non-Spinning
                  Operating Reserves, 10-Minute Spinning Reserves, 10-Minute
                  Non-Spinning Reserves, and Automatic Generation Control) that
                  are required for entities serving electrical load in NEPOOL.
                  SOS Requirements Power shall also include such transmission
                  and distribution delivery services as may be required for the
                  Seller to deliver SOS Requirements Power to the Delivery
                  Point(s). SOS Requirements Power shall not include any current
                  or future requirement to meet a renewable energy portfolio
                  standard in the State of Connecticut.

         3.2      The Seller shall deliver and sell to Buyer at a Delivery Point
                  the Contract Load Quantity. The billing determinants on which
                  payment to Seller is based shall be determined in accordance
                  with Appendix A.

         3.3      The Buyer shall receive and purchase power delivered by Seller
                  in accordance with this Section 3.

         3.4      The Seller shall own or procure sufficient firm power supplies
                  and ancillary services to provide SOS Requirements Power
                  throughout the Term, and shall schedule all such power
                  supplies and ancillary services with the ISO

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                  for use by the Buyer in accordance with the provisions of the
                  Restated NEPOOL Agreement (including future amendments
                  thereto) and the applicable operating procedures of the ISO.
                  The Seller shall be responsible for all transmission and
                  distribution delivery costs, if any, required to deliver SOS
                  Requirements Power to the Delivery Point(s).

         3.5      The Contract Load Quantity shall be equal to thirty-five (35)
                  percent of the Standard Offer Service Load during calendar
                  year 2000, forty (40) percent of the Standard Offer Service
                  Load during calendar years 2001 and 2002, and forty-five (45)
                  percent of the Standard Offer Service Load during calendar
                  year 2003.

         3.6      The Buyer shall procure or arrange for Delivery Services in
                  order to accomplish the firm delivery of SOS Requirements
                  Power from the Delivery Point(s) to the Retail Customers
                  taking SOS Requirements Power throughout the Term; provided
                  that the Buyer's obligation to supply Delivery Services at and
                  from the Delivery Point(s) with respect to any particular
                  generating resource of the Seller shall be subject to the
                  availability of transmission service for such delivery under
                  the NEPOOL Transmission Tariff.

         3.7      For the entire Term, the Seller shall either (1) be a member
                  of NEPOOL with its own load and settlement account established
                  in accordance with the rules of the ISO, or (2) contract with
                  a NEPOOL member for such member to include the Seller's load
                  in its own load and settlement account.

         3.8      The Seller and Buyer shall comply with the procedures, rules
                  and regulations of the ISO and NEPOOL and the requirements of
                  the Restated NEPOOL Agreement as they may apply to the
                  purchase, sale and delivery of SOS Requirements Power.

         3.9      The Seller shall be responsible for forecasting the Contract
                  Load Quantity for purposes of meeting its supply obligation
                  hereunder on a monthly, daily and hourly basis, for the full
                  Term of the Agreement. The Buyer's most recent forecasts of
                  energy sales and peak demand for its service area are set
                  forth in Appendix B for informational purposes. The Buyer will
                  supply the Seller with (1) any updates or material changes to
                  such forecasts made during the Term, (2) on a weekly basis,
                  the actual number of customers on Standard Offer Service
                  broken down by customer segment to the extent known, for the
                  previous week, and (3) within 37 hours after the close of the
                  day, the same supplier hourly loads the Buyer submitted to the
                  ISO on behalf of the Seller.

         3.10     The Seller shall be responsible for and shall pay all ISO and
                  NEPOOL charges and expenses associated with the provision of
                  SOS Requirements Power, except for any such ISO or NEPOOL
                  charges that

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                  are imposed directly on the Buyer in connection with the
                  provision of Delivery Services by the Buyer.

         3.11     The Seller shall be responsible for and shall pay all taxes,
                  fees, and levies that may be assessed by any entity in
                  connection with the provision of SOS Requirements Power except
                  for (1) such taxes, fees and levies that Buyer is allowed to
                  collect directly from the Retail Customers, and (2) such
                  taxes, fees and levies that are assessed directly to the Buyer
                  in connection with the provision of Delivery Services.

         3.12     If and to the extent that, at any time during the Term, the
                  congestion management scheme in effect under the NEPOOL
                  Transmission Tariff provides for the automatic assignment of
                  rights to rebates of transmission congestion charges to retail
                  loads of the Buyer, the Seller shall be entitled to a portion
                  of such congestion rebate rights based on the ratio between
                  the Contract Load Quantity and the Buyer's retail load that is
                  subject to the automatic assignment of such rights.



4.       CHARGE PROVISIONS

         4.1      For and in consideration of the sale by the Seller to the
                  Buyer of SOS Requirements Power, the Buyer shall pay the per
                  unit charges set forth in the Table below for all SOS
                  Requirements Power supplied to Retail Customers during the
                  Term of this Agreement. The monthly quantity of SOS
                  Requirements Power to which the unit charges set forth herein
                  shall be applied for billing purposes, shall be the SOS
                  Supplier Billing Amount:








                               NRG POWER MARKETING
                      Table of Load Percentages and Charges



- ------------------------- ---------------------- ----------------------- ---------------------- ----------------------
        5% LOAD                   2000                   2001                    2002                   2003
         SHARE*              (CENTS PER KWH)        (CENTS PER KWH)         (CENTS PER KWH)        (CENTS PER KWH)

                                                                                    
- ------------------------- ---------------------- ----------------------- ---------------------- ----------------------
          1ST
- ------------------------- ---------------------- ----------------------- ---------------------- ----------------------
          2ND
- ------------------------- ---------------------- ----------------------- ---------------------- ----------------------
          3RD
- ------------------------- ---------------------- ----------------------- ---------------------- ----------------------
          4TH
- ------------------------- ---------------------- ----------------------- ---------------------- ----------------------



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- ------------------------- ---------------------- ----------------------- ---------------------- ----------------------
          5TH
- ------------------------- ---------------------- ----------------------- ---------------------- ----------------------
          6TH
- ------------------------- ---------------------- ----------------------- ---------------------- ----------------------
          7TH
- ------------------------- ---------------------- ----------------------- ---------------------- ----------------------
          8TH                       -
- ------------------------- ---------------------- ----------------------- ---------------------- ----------------------
          9TH                       -                      -                       -
- ------------------------- ---------------------- ----------------------- ---------------------- ----------------------
          10TH                      -                      -                       -                      -
- ------------------------- ---------------------- ----------------------- ---------------------- ----------------------



         4.2      The charges set forth in Section 4.1 are the result of a
                  competitive bid solicitation and shall apply for the entire
                  Term unless both Parties agree to a change in charges set
                  forth in a written amendment to the Agreement that is accepted
                  for filing by the FERC. Nothing in this Section 4.2 is
                  intended to modify Sections 2.2, 4.5, or 9.3 of this
                  Agreement.

         4.3      It is the intent of the Parties that, except as provided in
                  Sections 4.5 and 9.3, or as the Parties otherwise agree,
                  neither the Seller and its affiliates nor the Buyer and its
                  affiliates shall have the unilateral right to make a filing
                  with the FERC under any Section of the Federal Power Act, or
                  with the DPUC, seeking to change the charges or any other
                  terms or conditions set forth in this Agreement for any
                  reason.

         4.4      Neither Party shall instigate or cooperate with any effort of
                  third parties to petition the FERC or the DPUC to change any
                  term of the Agreement (which includes the charges and
                  quantities). If any third party nevertheless petitions the
                  FERC or the DPUC to establish a proceeding under Section 206
                  of the Federal Power Act, both Parties shall cooperate to seek
                  to dismiss such proceeding and to uphold the Agreement without
                  change. It is the intention of the Parties that any authority
                  of the FERC or the DPUC to change the Agreement be strictly
                  limited to that which applies when the contracting parties
                  have irrevocably waived their right to seek to have the FERC
                  or the DPUC change any term of this Agreement.

         4.5      In the event that the DPUC modifies the rules relating to the
                  provision of Standard Offer Service during the Term, or
                  Connecticut enacts legislation that has the affect of
                  modifying the provisions of the Act relating to Standard Offer
                  Service, and such DPUC or legislative modifications would
                  materially adversely affect the rights and responsibilities of
                  either Party under this Agreement, the Party that believes it
                  would be materially adversely affected by such modifications
                  may request that the DPUC take action to protect the interests
                  of such Party. If the DPUC does not provide relief
                  satisfactory to such Party within sixty (60) days from the
                  date of filing of the request, the Parties shall enter into
                  good faith negotiations to amend this Agreement in a manner
                  designed to restore the original


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                  balance of consideration set forth herein. In the event that
                  the Parties are unable to reach agreement on such revisions to
                  this Agreement: (1) the Seller, if it is the adversely
                  affected Party, shall have the right unilaterally to make a
                  filing with the FERC pursuant to Section 205 of the Federal
                  Power Act and the FERC's rules and regulations thereunder, and
                  (2) the Buyer, if it is the adversely affected Party, shall
                  have the right to make a filing under Section 206 of the
                  Federal Power Act, seeking such changes to this Agreement,
                  including termination hereof, as such Party deems necessary
                  due solely to the DPUC's change or the new legislation. In the
                  case of any such filing, the other Party shall have the right
                  to intervene in opposition to the filing.

         4.6      Upon request of the Buyer, the Seller shall, within three (3)
                  business days, submit a firm price quote for no less than a
                  pro rata share of the Buyer's Back-Up Service requirements,
                  with such pro rata share based on the ratio of the Contract
                  Load Quantity to the Buyer's Standard Offer Service Load, and
                  which quote shall be binding on the Seller for a period of no
                  less than a calendar month. If the Buyer accepts the Seller's
                  price quote during such calendar month period for any portion
                  of the amount of Back-Up Service covered by the quote, the
                  Seller shall supply additional SOS Requirements Power in
                  accordance with its price quote and the remaining terms and
                  conditions of this Agreement.


5.       BILLING AND PAYMENT



         5.1      As soon as practicable after the end of each month during the
                  Term, the Buyer shall supply the Seller its estimate of the
                  SOS Supplier Billing Amount for purposes of billing hereunder.
                  Within ten (10) days thereafter, the Seller shall submit a
                  bill to the Buyer for all applicable charges hereunder based
                  on such estimates.

         5.2      Each bill rendered under this Agreement shall be subject to
                  adjustment in order to true-up charges based on estimated SOS
                  Supplier Billing Amount data to the adjusted SOS Supplier
                  Billing Amount, as defined in Appendix A. Promptly after the
                  adjustment to SOS Supplier Billing Amount has been determined,
                  the Buyer shall supply the adjusted SOS Supplier Billing
                  Amount to the Seller in order to enable the Seller to
                  calculate the final bill for SOS Requirements Power for each
                  month during the Term. The Seller shall prepare and send to
                  the Buyer an adjusted bill within ten (10) days after
                  receiving the adjusted SOS Supplier Billing Amount data from
                  the Buyer. All refunds or surcharges owed to either Party as a
                  result of differences between the estimated and adjusted SOS
                  Supplier Billing Amounts shall include the payment of interest
                  calculated in accordance with the regulations of the FERC
                  applicable to the payment of interest on


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                  refunds for the entire period between payment under the
                  original estimated bill and the final bill.

         5.3      All bills, including any adjusted bills, shall bear the date
                  of rendering and be due and payable not later than thirty (30)
                  days after the date of rendering. Any amount remaining unpaid
                  after such thirty (30) days shall bear interest at the rate
                  set forth in the regulations of the FERC for interest payments
                  on refunds, from the due date to the date of payment by the
                  Buyer. All payments sent by the Buyer to the Seller shall be
                  by wire transfer or by certified check delivered using
                  overnight mail.

         5.4      If the Buyer disputes the amount of any bill, it shall so
                  notify the Seller in writing. The Buyer shall pay to the
                  Seller any undisputed amount of the bill when due. The
                  disputed amount may, at the discretion of the Buyer, be held
                  by the Buyer until the dispute has been resolved; provided
                  that the Buyer shall be responsible to pay interest on any
                  withheld amounts that are determined to have been properly
                  billed, which shall be calculated in the same manner as
                  interest on late payments under Section 5.3. Neither Party
                  shall have the right to challenge any monthly bill or to bring
                  any court or administrative action of any kind questioning the
                  propriety of any bill after a period of twenty four (24)
                  months from the date the bill was due; provided, however, that
                  in the case of a bill based on estimates, such twenty-four
                  month period shall run from the due date of the final adjusted
                  bill.

         5.5      In the event that the Buyer fails to pay the amount due by the
                  due date, the Seller may notify the Buyer that, unless payment
                  is received, it will be in default of its obligations under
                  this Agreement. The Buyer shall have thirty (30) days from the
                  date of receipt of such notification from the Seller to cure
                  its default. In the event that the default is not cured within
                  such 30 day period, the Seller, in addition to any other legal
                  or equitable remedies it may have, shall have the right to
                  terminate this Agreement upon five (5) days written notice to
                  the Buyer.



6.        BILLING DETERMINANTS/SUPPLY OBLIGATION



         6.1      The Buyer shall maintain meters capable of measuring the
                  energy use of Retail Customers taking SOS in accordance with
                  rules prescribed by the DPUC. The accuracy of all metering
                  equipment will be in accordance with the Buyer's normal
                  practices and DPUC requirements applicable to the Buyer's
                  retail distribution loads. The Seller hereby acknowledges and
                  accepts that Buyer does not maintain meters capable of
                  interval measurement for some of its retail load that will be
                  served under the SOS. The price, risk and other terms of this
                  Agreement have been negotiated based upon these conditions and
                  Buyer shall not be obligated to install


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                  interval metering equipment as a result of this Agreement. The
                  Parties agree that the obligation of the Buyer to pay for
                  power delivered and the obligation of the Seller to deliver a
                  specified quantity at an authorized Delivery Point shall be
                  determined in accordance with Appendix A.



7.       LIABILITY FOR DELIVERY AND FORCE MAJEURE



         7.1      The Seller shall be responsible for scheduling with or
                  purchasing from NEPOOL a sufficient amount of SOS Requirements
                  Power to satisfy its service obligations hereunder at all
                  times during the Term. To the extent that the Seller does not
                  own or has not acquired sufficient resources to satisfy this
                  obligation at any time during the Term, the Seller shall
                  purchase any deficiency from NEPOOL. Under no circumstances
                  shall the Buyer be responsible for acquiring power or
                  ancillary services to meet any portion of the Seller's SOS
                  Requirements Power supply obligation hereunder at any time
                  during the Term.

         7.2      In the event that the Seller defaults on its material
                  obligations to the Buyer or NEPOOL in connection with this
                  Agreement at any time during the Term, and the Seller does not
                  cure such default within a time period allowed by NEPOOL and
                  ISO-NE (but not to exceed ten (10) days if there is no
                  explicit NEPOOL or ISO-NE period for curing the default), the
                  Buyer shall have the option to terminate or suspend all or a
                  portion of service under this Agreement upon no less than
                  twenty four (24) hours notice and obtain an alternative source
                  of supply of SOS Requirements Power from the open market for
                  the remaining Term. In such event, the Seller shall be liable
                  to the Buyer for the entire difference between the cost of
                  such alternative source of supply obtained in the open market
                  and the cost of purchasing SOS Requirements Power under this
                  Agreement, plus all other costs reasonably incurred by the
                  Buyer to replace the Seller. The Parties hereby stipulate that
                  purchases by the Buyer at the applicable ISO-NE spot market
                  prices will be deemed commercially reasonable open market
                  prices for this purpose. Nothing in this Section 7.2 shall be
                  deemed as a waiver of any other legal or equitable remedies
                  that the Buyer may have against the Seller for breach of this
                  Agreement.

         7.3      In the event that the Buyer defaults on its material
                  obligations to the Seller or NEPOOL in connection with this
                  Agreement at any time during the Term, and the Buyer does not
                  cure such default within a time period allowed by NEPOOL and
                  ISO-NE (but not to exceed ten (10) days if there is no
                  explicit NEPOOL or ISO-NE period for curing the default), the
                  Seller shall have the option to terminate or suspend all or a
                  portion of service under this Agreement upon no less than
                  twenty four (24) hours notice and thereafter sell any of the
                  resources it has obtained in order to meet its obligations
                  under this Agreement in the open market. In such event, the


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                  Buyer shall be liable to the Seller for the entire difference
                  between the prices obtained by the Seller in the open market
                  and the price the Seller would have obtained for selling SOS
                  Requirements Power under this Agreement. The Parties hereby
                  stipulate that sales by the Seller at the applicable ISO-NE
                  spot market prices will be deemed commercially reasonable open
                  market prices for this purpose. Nothing in this Section 7.3
                  shall be deemed as a waiver of any other legal or equitable
                  remedies that the Seller may have against the Buyer for breach
                  of this Agreement.

         7.4      Notwithstanding any other provision of this Agreement, neither
                  Party shall be liable to the other Party in the event that,
                  due to a cause beyond the reasonable control of, and without
                  the fault or negligence of the Party seeking to limit its
                  liability hereunder ("Force Majeure"), NEPOOL experiences
                  unplanned-for emergency system conditions, including but not
                  limited to a shortage of available electric generating
                  capacity or an insufficiency of transmission or distribution
                  facilities required for the delivery of SOS Requirements
                  Power, such that NEPOOL either must suspend the supply of one
                  or more of the products required to serve load in NEPOOL or
                  must curtail or interrupt all or a portion of the Standard
                  Offer Service Load.

         7.5      For purposes of Section 7.4, "Force Majeure" shall include,
                  without limitation, sabotage, strikes, riots or civil
                  disturbance, acts of God, act of a public enemy, drought,
                  earthquake, flood, explosion, fire, lightning, landslide, or
                  any similar cataclysmic occurrence, or the appropriation or
                  diversion of electricity by sale or order of any governmental
                  authority having jurisdiction thereof. Under no circumstances
                  shall Force Majeure include an occurrence or event that merely
                  increases the costs of or causes an economic hardship to a
                  Party, or any occurrence or event that was caused by or
                  contributed to by the Party claiming Force Majeure.

         7.6      Except as otherwise specifically provided for herein, neither
                  Party shall be liable to the other Party for any special,
                  indirect, incidental, consequential, or punitive damages of
                  any kind, including but not limited to loss of use, out of
                  pocket expenses and lost profits (past or future).


8.       BUYER CREDIT/SECURITY ASSURANCES



         8.1      NRG Energy, Inc. has provided the Buyer a certificate executed
                  by an officer of NRG Energy, Inc. certifying that NRG Energy,
                  Inc. has entered into a firm wholesale entitlements contract
                  ("Entitlement Agreement") with the Seller for the full Term of
                  this Agreement, pursuant to which the Seller has acquired from
                  NRG Energy, Inc. firm, first-call entitlement rights to no
                  less than 1,600 MW of generating capacity located in the
                  NEPOOL control area that are owned or controlled by NRG
                  Energy, Inc. and has obtained, or will obtain, any regulatory
                  or other approvals required to put


                                      -12-

   13

                  the Entitlement Agreement into effect as of the commencement
                  of the Term. Entitlements in generating units obtained by NRG
                  Energy, Inc. pursuant to the Transition Agreement shall be
                  considered generating capacity owned and controlled by the
                  Seller for purposes of the prior sentence. The Entitlement
                  Agreement shall provide the Seller with all of the rights to
                  capacity, energy and ancillary services available from the
                  generating units such that the Seller can satisfy its
                  obligation to supply SOS Requirements Power for the full Term
                  of this Agreement; provided, however, that the Seller may
                  terminate the Entitlement Agreement if, during the Term, the
                  Seller achieves an Unsecured Investment Grade Rating of "Baa3"
                  or better from Moody's Investors Service or "BBB-" or better
                  from Standard & Poors Corporation, or an equivalent credit
                  rating by another nationally recognized rating service
                  reasonably acceptable to the Buyer; and provided further, if
                  the Seller is unable to maintain such Investment Grade Rating
                  during the Term, it shall either promptly re-instate the
                  Entitlement Agreement or promptly deliver to the Buyer a
                  written parent guarantee, in a form acceptable to the Buyer,
                  by NRG Energy, Inc. of the Seller's performance under this
                  Agreement for the remaining Term hereof.

         8.2      The Parties hereby acknowledge that NRG Energy, Inc. or
                  another affiliate of Seller with an Unsecured Investment Grade
                  Rating of "Baa3" or better from Moody's Investors Service or
                  "BBB-" or better from Standard & Poors Corporation, or an
                  equivalent credit rating by another nationally recognized
                  rating service reasonably acceptable to the Buyer, has
                  provided the Buyer a corporate guarantee in the amount of $37
                  million, which is equal to ten (10) percent of the dollar
                  value for the first year of the awarded bid. The Seller shall
                  cause NRG Energy, Inc. or another qualifying affiliate of
                  Seller (as applicable) to keep such corporate guarantee in
                  place for the full Term.

         8.3      By no later than the date of commencement of the Term, the
                  Buyer shall provide the Seller a performance or surety bond or
                  other similar financial instrument in a form and from an
                  issuer reasonably acceptable to the Seller in the amount of
                  $37 million, unless the Buyer shall have obtained an Unsecured
                  Investment Grade Rating of "Baa3" or better from Moody's
                  Investors Service or "BBB-" or better from Standard & Poors
                  Corporation, or an equivalent credit rating by another
                  nationally recognized rating service reasonably acceptable to
                  the Buyer, by such service commencement date. The Buyer shall
                  be entitled to terminate such surety bond or other similar
                  financial instrument immediately upon obtaining a Unsecured
                  Investment Grade Rating of "Baa3" or better from Moody's
                  Investors Service or "BBB-" or better from Standard & Poors
                  Corporation, or an equivalent credit rating by another
                  nationally recognized rating service reasonably acceptable to
                  the Buyer. If the Buyer is unable to maintain such Unsecured
                  Investment Grade Rating during the Term, it


                                      -13-

   14

                  shall promptly re-instate such performance or surety bond or
                  other financial instrument.



9.       CONDITIONS



         9.1      Conditions to Obligation of the Seller. The obligations of the
                  Seller under this Agreement are subject to the fulfillment and
                  satisfaction, on or prior to the Effective Date as defined in
                  Section 2.1, of each of the following conditions, any one or
                  more of which may be waived only in writing, in whole or in
                  part, by the Seller:

                  (a)  Representations, Warranties and Covenants True at the
                       Effective Date. (i) All representations and warranties of
                       Buyer contained in this Agreement shall be true and
                       correct in all material respects as of the date when made
                       and at and as of the Effective Date as though such
                       representations and warranties had been made or given on
                       such date (except to the extent such representations and
                       warranties specifically pertain to an earlier date),
                       except (x) for changes contemplated by this Agreement and
                       (y) where the failure to be true and correct will not
                       have a Material Adverse Effect on the business, property,
                       financial condition, results of operations or prospects
                       of Buyer, or on the Seller's rights under this Agreement;
                       (ii) Buyer shall have performed and complied with, in all
                       material respects, its obligations that are to be
                       performed or complied with by it prior to or on the
                       Effective Date; and

                  (b)  No Material Adverse Effect. No Material Adverse Effect
                       shall exist.

         9.2      Conditions to Obligation of Buyer. The obligations of Buyer
                  under this Agreement are subject to the fulfillment and
                  satisfaction, on or prior to the Effective Date as defined in
                  Section 2.1, of each of the following conditions, any one or
                  more of which may only be waived in writing, in whole or in
                  part, by Buyer:

                  (a)  Representations, Warranties and Covenants True at the
                       Effective Date. (i) All representations and warranties of
                       the Seller contained in this Agreement shall be true and
                       correct in all material respects when made and at and as
                       of the Effective Date as though such representations and
                       warranties had been made or given on such date (except to
                       the extent such representations and warranties
                       specifically pertain to an earlier date), except (x) for
                       changes contemplated by this Agreement and (y) where the
                       failure to be true and correct will not have a Material
                       Adverse Effect on the business, property, financial
                       condition, results of operations or prospects of the
                       Seller or Buyer's rights under this Agreement; (ii) the
                       Seller shall have performed and


                                      -14-

   15

                       complied with, in all material respects, its obligations
                       that are to be performed or complied with by prior to or
                       on the Effective Date; and

                  (b)  Absence of Material Adverse Effect. No Material Adverse
                       Effect shall exist.

         9.3      Special Condition Regarding Retail Rates. The DPUC has issued
                  an order stating that it will set the General Services
                  Component ("GSC") rates for Retail Customers taking Standard
                  Offer Service after the negotiation of this Agreement, and
                  that such GSC rates will be established by retail rate class.
                  The Parties have agreed that the level of the GSC rates and
                  distribution to each retail rate class could affect the
                  Seller's expectations in submitting the prices set forth in
                  Section 4.1 in response to the RFP. Accordingly, the Parties
                  agree that, if the DPUC establishes GSC rates at levels which
                  include an adjustment above the weighted average Standard
                  Offer price that are in excess of the maximum rate adjustments
                  set forth in the table below, the Seller shall have the right
                  to seek to renegotiate the prices set forth in Section 4.1,
                  solely as necessary to reflect the GSC rate adjustment
                  exceeding the amounts in the table set forth below. The
                  Parties agree that these adjustments in the table below
                  reflect both a retail adder and a wholesale rate specific
                  adjustment. The Parties further specifically agree that the
                  Seller's right to seek a renegotiation of the prices set forth
                  in Section 4.1 shall apply solely in the circumstance where
                  the DPUC approves GSC rates for any rate class that are in
                  excess of the weighted average Standard Offer price, plus the
                  maximum rate adjustments set forth in the table below, and
                  that this Section 9.3 creates no other right or remedy on
                  behalf of the Seller. In retail restructuring proceedings
                  before the DPUC, CL&P (1) shall not advocate the adoption of
                  GSC rates that include adders above the weighted average
                  Standard Offer price that are not cost-based, and (2)
                  consistent with (1) above, shall request and advocate that the
                  DPUC adopt retail GSC rates that include adders that are below
                  those set forth in this Section 9.3.


                                      -15-
   16


                      Table:

- ------------------------- ----------------------
      CL&P's Rate              Proposed GSC
      Schedule No.             Maximum Rate
                                Adjustment
- ------------------------- ----------------------
           1
- ------------------------- ----------------------
           5
- ------------------------- ----------------------
           7
- ------------------------- ----------------------
           18
- ------------------------- ----------------------
           27
- ------------------------- ----------------------
           29
- ------------------------- ----------------------
           30
- ------------------------- ----------------------
           35
- ------------------------- ----------------------
           40
- ------------------------- ----------------------
           41
- ------------------------- ----------------------
           55
- ------------------------- ----------------------
           56
- ------------------------- ----------------------
           57
- ------------------------- ----------------------
           58
- ------------------------- ----------------------
          115
- ------------------------- ----------------------
          116
- ------------------------- ----------------------
          117
- ------------------------- ----------------------
          985
- ------------------------- ----------------------
          119
- ------------------------- ----------------------


                                      -16-


   17

10.      REPRESENTATIONS AND WARRANTIES

         10.1     Each Party hereby represents and warrants to the other that:

                  (a)  It is duly organized, validly existing and in good
                       standing under the laws of its jurisdiction of
                       organization and is duly qualified to do business in all
                       jurisdictions where such qualification is required.

                  (b)  It has full power and authority to enter this Agreement
                       and perform its obligations hereunder. The execution,
                       delivery and performance of this Agreement have been duly
                       authorized by all necessary corporate action and do not
                       and will not contravene its organizational documents or
                       conflict with, result in a breach of, or entitle any
                       Party (with due notice or lapse of time or both) to
                       terminate, accelerate or declare a default under, any
                       agreement or instrument to which it is a party or by
                       which it is bound. The execution, delivery and
                       performance by it of this Agreement will not result in
                       any violation by it of any law, rule or regulation
                       applicable to it. It is not a party to, nor subject to or
                       bound by, any judgment, injunction or decree of any court
                       or other governmental entity which may restrict or
                       interfere with the performance of this Agreement by it.
                       This Agreement is its valid and binding obligation,
                       enforceable against it in accordance with its terms,
                       except as (i) such enforcement may be subject to
                       bankruptcy, insolvency, reorganization, moratorium or
                       other similar laws now or hereafter in effect relating to
                       creditors' rights generally and (ii) the remedy of
                       specific performance and injunctive relief may be subject
                       to equitable defenses and to the discretion of the court
                       before which any proceeding therefor may be brought.

                  (c)  Except as otherwise specifically provided in this
                       Agreement, no consent, waiver, order, approval,
                       authorization or order of, or registration, qualification
                       or filing with, any court or other governmental agency or
                       authority is required for the execution, delivery and
                       performance by such Party of this Agreement and the
                       consummation by such Party of the transactions
                       contemplated hereby and no consent or waiver of any party
                       to any contract to which such Party is a party or by
                       which it is bound is required for the execution, delivery
                       and performance by such Party of this Agreement.

                  (d)  There is no action, suit, grievance, arbitration or
                       proceeding pending or, to the knowledge of such Party,
                       threatened against or affecting such Party at law or in
                       equity, before any federal, state, municipal or other
                       governmental court, department, commission, board,
                       arbitrator, bureau, agency or instrumentality that
                       prohibits or impairs its ability to execute and deliver
                       this Agreement. Such Party has not received written
                       notice of any such pending or threatened investigation,
                       inquiry or review by any governmental entity.


                                      -17-

   18

         10.2     The Buyer hereby represents that it has not asserted and will
                  not take during the term any position before the DPUC or FERC
                  that is inconsistent with the rights and obligations of the
                  Parties under this Agreement, provided that the foregoing will
                  not prevent the Buyer from asserting or taking any position
                  before such agencies which it reasonably believes is necesarry
                  for it to meet applicable legal requirements.



11.      ASSIGNMENT



         11.1     Neither Party shall assign, pledge or transfer this Agreement
                  without the prior written consent of the other Party, which
                  consent shall not be unreasonably withheld. When assignable,
                  this Agreement shall be binding upon, shall inure to the
                  benefit of, and may be performed by, the successors and
                  assignees of the Parties, except that no assignment, pledge or
                  other transfer of this Agreement by either Party shall operate
                  to release the assignor, pledgor, or transferor from any of
                  its obligations under this Agreement unless the other Party
                  (or its successors or assigns) consents in writing to the
                  assignment, pledge or other transfer and expressly releases
                  the assignor, pledgor, or transferor from its obligations
                  hereunder. Notwithstanding the foregoing, either Party may
                  transfer or assign its interest hereunder to an affiliate, or
                  to a successor in interest of such Party by virtue of a
                  merger, acquisition or other similar corporate transaction
                  involving all or substantially all of the assets of the
                  assigning Party, without obtaining the consent of the other
                  Party, provided that the assignee has a credit status at the
                  time of such transfer or assignment which, in the
                  non-assigning Party's reasonable opinion, is at least as sound
                  as that of the assignor. Nothing in the foregoing shall be
                  construed as limiting the Seller's right to assign or
                  otherwise transfer a security interest in the revenues
                  generated under this Agreement to a third party, and Buyer
                  expressly consents to such assignment for security interest
                  purposes, provided that such assignment or transfer shall not
                  limit in any way the Seller's obligations to the Buyer
                  hereunder.



12.      ACCOUNTS AND RECORDS



         12.1     The Seller and Buyer each shall keep complete and accurate
                  accounts and records with respect to its performance under
                  this Agreement and shall maintain such data for a period of at
                  least one (1) year after final billing for audit by the other
                  Party; provided, however, that in the event of any billing
                  dispute or pending accounting, all such accounts and records
                  pertaining to any bill or charge in dispute or pending
                  accounting shall be maintained until such later time as the
                  billing dispute is resolved or the accounting is completed. If
                  an accounting or billing dispute establishes


                                      -18-

   19

                  that any bill submitted to and paid by Buyer was for an amount
                  greater than properly chargeable under this Agreement, Seller
                  shall refund to Buyer the excess amount collected together
                  with interest calculated in accordance with the FERC's
                  regulations governing interest on refunds. If such accounting
                  or billing dispute establishes that any bill submitted to and
                  paid by Buyer was for an amount less than properly chargeable
                  under this Agreement, Buyer shall make such additional payment
                  to bring its account into balance, together with interest
                  calculated in accordance with the FERC's regulations governing
                  interest on refunds. The Parties agree to individually and
                  jointly request from NEPOOL or the ISO, or other appropriate
                  source, any data or information which either Party believes is
                  reasonably necessary for purposes of a requested accounting or
                  resolution of a billing dispute. Each Party shall have the
                  right, during normal business hours and at its own expense, to
                  examine, inspect and make copies of all such accounts and
                  records insofar as may be necessary for the purpose of
                  ascertaining the reasonableness and accuracy of all relevant
                  data, estimates or statement of charges submitted hereunder.
                  The records supplied by the Buyer to the Seller for auditing
                  purposes hereunder shall include the Buyer's hourly
                  calculation of its Standard Offer Service Load.



13.      INDEMNIFICATION



         13.1     Indemnification by Buyer. Buyer shall indemnify, defend and
                  hold harmless the Seller and the Seller's board members,
                  officers, trustees, directors, agents, employees and
                  affiliates from and against any and all claims, demands,
                  liabilities (including reasonable attorney's fees), and
                  judgments, fines, settlements and other amounts ("Damages")
                  arising from any and all civil, criminal, administrative or
                  investigative proceedings ("Claims") relating to or arising
                  out of:

                  (a)  any failure of Buyer to observe or perform any material
                       term or provision of this Agreement;

                  (b)  any failure of any representation or warranty made by
                       Buyer herein to be true in any material respect;

                  (c)  any Claim of any third party to the extent arising from
                       the acts or omissions of Buyer or any of its agents or
                       employees except to the extent such acts or omissions are
                       caused by the Seller or its affiliates; and

                  (d)  any bodily injury, death or damage to person or property
                       caused by the Buyer and its affiliates and their
                       respective board members, officers, managers, employees
                       or agents or caused by their facilities,


                                      -19-

   20

                       in each case in connection with or resulting from Buyer's
                       performance or non-performance of this Agreement except
                       to the extent caused by an act of negligence or willful
                       misconduct of the Seller.

         13.2     Indemnification by Seller. Seller shall indemnify, defend and
                  hold harmless the Buyer and the Buyer's board members,
                  officers, trustees, directors, agents, employees and
                  affiliates from and against any and all claims, demands,
                  liabilities (including reasonable attorney's fees), and
                  judgments, fines, settlements and other amounts ("Damages")
                  arising from any and all civil, criminal, administrative or
                  investigative proceedings ("Claims") relating to or arising
                  out of:

                  (a)  any failure of Seller to observe or perform any material
                       term or provision of this Agreement;

                  (b) any failure of any representation or warranty made by
                      Seller herein to be true in any material respect;

                  (c) any Claim of any third party to the extent arising from
                      the acts or omissions of Seller or any of its agents or
                      employees except to the extent such acts or omissions are
                      caused by the Buyer or its affiliates; and

                  (d) any bodily injury, death or damage to person or property
                      caused by the Seller and its affiliates and their
                      respective board members, officers, managers, employees or
                      agents or caused by their facilities, in each case in
                      connection with or resulting from Seller's performance or
                      non-performance of this Agreement except to the extent
                      caused by an act of negligence or willful misconduct of
                      the Buyer.



14.      NOTICES



         14.1     Any notice, demand, or request permitted or required under
                  this Agreement shall be delivered in person or mailed by
                  certified mail, postage prepaid, return receipt requested, or
                  otherwise confirm receipt to a Party at the applicable address
                  set forth below.

                           To Buyer:

                           Director, Regulatory Policy and Planning
                           Northeast Utilities Service Company
                           P.O. Box 270
                           Hartford, CT  06141-0270


                           To Seller:


                                      -20-
   21

                           Executive Director, Power Markets
                           NRG Power Marketing Inc.
                           1221 Nicollet Mall, Suite 700
                           Minneapolis, MN  55403


         Such addresses may be changed from time to time by written notice by
         either Party to the other Party without a need for an amendment to this
         Agreement.

15.      INTERPRETATION



         15.1     The interpretation and performance of this Agreement shall be
                  according to and controlled by the Federal Power Act and
                  regulations and orders of the FERC thereunder and, to the
                  extent not controlled thereby, by the laws of the State of
                  Connecticut.



16.      RESOLUTION OF DISPUTES



         16.1     Any dispute between the Parties involving service under this
                  Agreement shall be referred to representatives of the Buyer
                  and Seller designated by the Parties for resolution on an
                  informal basis as promptly as practicable. In the event the
                  designated representatives are unable to resolve the dispute
                  within thirty (30) days, or such other period as the Parties
                  may jointly agree upon, such dispute may, by mutual agreement
                  of the Parties, be submitted to arbitration and resolved in
                  accordance with the arbitration procedure set forth in the
                  NEPOOL Transmission Tariff. If they do not agree to
                  arbitration, each Party shall be free to pursue any legal and
                  equitable remedies to which it may be entitled under this
                  Agreement and the applicable law before a court or government
                  agency with jurisdiction over the dispute.





17.      MISCELLANEOUS



         17.1     Each Party shall prepare, execute, and deliver to the other
                  Party any documents reasonably required to implement any
                  provision hereof.

         17.2     Any number of counterparts of this Agreement may be executed
                  and each shall have the same force and effect as the original.


                                      -21-

   22

         17.3     Failure of either Party to enforce any provision of this
                  Agreement or to require performance by the other Party of any
                  of the provisions hereof shall not be construed as a waiver of
                  such provisions or affect the validity of this Agreement, any
                  part hereof, or the right of either Party to thereafter
                  enforce each and every provision.

         17.4     This Agreement is made subject to all lawful orders of those
                  state or federal regulatory bodies having jurisdiction hereof.

         17.5     Nothing in this Agreement shall be construed as creating any
                  relationship between the Parties other than that of
                  independent contractor for the sale and purchase of
                  electricity.

         17.6     The captions to sections throughout this Agreement are
                  intended solely to facilitate reading and reference to all
                  sections and provisions of this Agreement. Such captions shall
                  not affect the meaning or interpretation of this Agreement.

         17.7     The invalidity or unenforceability of any provision of this
                  Agreement shall not affect the other provisions hereof. If any
                  provision of this Agreement is held to be invalid, such
                  provision shall not be severed from this Agreement; instead,
                  the scope of the rights and duties created thereby shall be
                  reduced by the smallest extent necessary to conform such
                  provision to the applicable law, preserving to the greatest
                  extent the intent of the Parties to create such rights and
                  duties as set out herein. If necessary to preserve the intent
                  of the Parties hereto, the Parties shall negotiate in good
                  faith to amend this Agreement, adopting a substitute provision
                  for the one deemed invalid or unenforceable that is legally
                  binding and enforceable.

          17.8    The Buyer shall use reasonable efforts to supply the Seller
                  with any orders of the DPUC that may affect the Seller's
                  rights and obligations under this Agreement. Such orders shall
                  be provided to the individual designated for receipt of
                  notices pursuant to Section 14.1.





18.      AMENDMENT

         18.1 This Agreement may be amended only by a written agreement signed
              by the Parties.



19.      COMPLETE AND FULL AGREEMENT


                                      -22-

   23

         19.1     This Agreement constitutes the entire agreement between the
                  Parties and supersedes all previous offers, negotiations,
                  discussions, communications and correspondence.



20.      NOTICE OF TERMINATION

         20.1     Upon expiration of the Term of this Agreement, Buyer will not
                  oppose and, if Seller requests, Buyer will support, any notice
                  of termination which Seller may be required to file under FERC
                  regulations.

21.      EARLY TERMINATION

         21.1     In the event that the Transition Agreement terminates pursuant
                  to and in accordance with Section 2.2 thereof prior to the
                  expiration of the Term of this Agreement, this Agreement shall
                  likewise terminate as of the date of termination of the
                  Transition Agreement in accordance with Section 2.2 thereof.


IN WITNESS WHEREOF, the undersigned Parties have caused this Agreement to be
executed in their names by their respective duly authorized officials, as of the
29th day of October, 1999.

The Connecticut Light and Power Company


By: /s/ James R. Shuckerow, Jr.
   ------------------------------------------
   James R. Shuckerow, Jr.
   Director, Wholesale Power Contracts


NRG Power Marketing Inc.

By: /s/ James J. Bender
   ------------------------------------------
   James J. Bender
   Vice President



                                      -23-
   24


APPENDIX A

                  CALCULATION OF THE STANDARD OFFER SUPPLIER'S
                              BILLING DETERMINANTS
         The Contract Load Quantity will be determined in accordance with the
methodology accepted by the DPUC for the calculation of the load
responsibilities of competitive retail service suppliers in the competitive
retail markets in Connecticut and the settlement rules adopted by NEPOOL and the
NEPOOL ISO. The methodology set forth below is based on CL&P's proposed
methodology to the DPUC for calculating such retail load responsibilities and
current NEPOOL settlement rules, and shall apply unless such methodology is
changed pursuant to lawful action of NEPOOL or the DPUC. In the event that the
DPUC or NEPOOL implement any such changes, the Buyer shall promptly notify the
Seller in writing of such changes.
1. Determination of the System Retail Load.
         On an hourly basis, the Buyer will calculate the aggregate load of its
Retail Customers, ( the "System Retail Load"). The System Retail Load will be
computed for each hour based on the total metered output of all generation
connected to the Buyer's system below the tie meters at which NEPOOL measures
net interchange between the Buyer's system and NEPOOL,and adding to that figure
the net imports into the Buyer's system (or subtracting net exports from the
system) as measured by the tie meters at or below the NEPOOL PTF, less
non-retail loads (e.g. wholesale load served to municipalities).
2.  Determination of retail customer Hourly Loads.
         For each hour, the Buyer will calculate the actual or estimated loads
of each of its Retail Customers using one of the following two methods:
                  a) In circumstances where the Customer has an interval
         recording meter (capable of recording pulses in 15 minute, or other
         intervals), the retail customer's initial hourly load is determined by
         these interval pulses translated or


                                      -24-

   25

         aggregated into hourly consumption quantities. The Buyer will use the
         actual recorded meter readings, increased to account for losses on the
         Buyer's system between the Delivery Point and end-use meters in
         accordance with a study entitled, "Determination of Loss Factors for
         the Northeast Utilities System" conducted by Northeast Utilities'
         Transmission Planning Department dated October 1, 1989, to determine
         the hourly loads of the Retail Customers.
                  b) In circumstances where Retail Customers do not have
         interval meters capable of recording hourly consumption quantities, the
         Buyer will determine the hourly loads of the Retail Customers using the
         load estimation technique filed with the DPUC for purposes of
         calculating retail load responsibilities of competitive suppliers under
         the Connecticut retail choice program. The load estimation technique
         will be based on load profile statistics developed for different retail
         customer classes and segments, and for each calendar month, days and
         time periods, based on statistical sampling of consumption patterns of
         Retail Customers with interval recording meters. The average load
         profiles so developed will be scaled for individual Retail Customers
         using a usage factor that is calculated based on the relationship
         between the individual Retail Customer's usage over the prior billing
         period and the average retail class segment usage estimated over the
         same time period, and increased to account for losses on the Buyer's
         system between the Delivery Point and end-use meters in accordance with
         a study entitled, "Determination of Loss Factors for the Northeast
         Utilities System" conducted by Northeast Utilities' Transmission
         Planning Department dated October 1, 1989.
3.  Determination of Competitive Supplier Hourly Loads.
         The hourly loads of each Competitive Supplier serving retail load on
the Buyer's system will be estimated using the following two step process:


                                      -25-

   26

                  a) Each retail customer will be assigned a Competitive
         Supplier Code based on the identity of its Competitive Supplier. Those
         Customers that have not designated a Competitive Supplier will be
         assigned the Standard Offer Service Supplier Code. The retail customer
         hourly loads, calculated in accordance with section 2(a) and (b) above,
         associated with the Retail Customers that have been assigned the same
         Competitive (or Standard Offer Service) Supplier Code, will be summed
         for each hour.
                  b) Determination of Residual. The difference between the
         System Retail Load (as determined in section 1 above) and the sum of
         the load responsibilities of all Competitive Suppliers (including
         Standard Offer Service load), determined in accordance with section
         3(a), will constitute the "Residual". The Residual will be allocated to
         each Competitive Supplier (and to the Standard Offer Service load) in
         proportion to the ratio of the estimated part of the Supplier's
         assigned retail customer load (as calculated in section 2(b) to the sum
         of the estimated part of the retail customer loads of all Competitive
         Suppliers, as calculated in section 2(b), including the Standard Offer
         Service load.
4. Determination of SOS Total Hourly Loads.
         The Standard Offer Service hourly load will be determined in accordance
with section 3 based on the calculated or estimated hourly loads, including
Residual allocations to estimated hourly loads, for all Retail Customers
assigned the Standard Offer Service Supplier Code.
5. Allocation of SOS Supplier Hourly Loads.
         The total Standard Offer Service hourly load will be allocated among
each of the Sellers of Standard Offer Service based on the percentage of the
total Standard Offer Service Load assigned to that Seller in Section 3.5 of that
Seller's Standard Offer Service Agreement with the Buyer.


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6. Reporting of SOS Supplier Hourly Loads to the ISO.
         a) In accordance with the rules of NEPOOL, the Buyer will report to the
ISO the hourly loads, determined in accordance with section 5 of this Appendix
A, for each Seller of Standard Offer Service (or the NEPOOL participant
responsible for that Seller's load under NEPOOL rules), within 37 business hours
after the close of each day. Each Seller of Standard Offer Service, or the
NEPOOL participant designated by such Seller to assume the Seller's load
responsibility in NEPOOL, will have sole responsibility for all charges assessed
by the ISO based on the hourly loads reported by the Buyer.
         b) The Contract Load Quantity for each Seller of Standard Offer Service
will be equal to the aggregate of the Standard Offer Service hourly loads of
such Seller, summed over the calendar month, as reported to NEPOOL in accordance
with section 6(a) of Appendix A.
7. Determination of SOS Supplier Billing Amount.
         The SOS Supplier Billing Amount is equal to the Contract Load Quantity
multiplied by a delivery efficiency factor of 0.9238. This amount will be
submitted to Seller for purposes of billing hereunder. The delivery
efficiency factor set forth above shall not be subject to change during the
Term.
8.       Determination of adjusted SOS Supplier Billing Amount.
         In accordance with the requirements of NEPOOL Market Rules & Procedures
No. 18, the Buyer will submit to the ISO, within 90 days after the end of each
month, revised monthly energy quantities for each NEPOOL participant for such
month. The adjusted Contract Load Quantity for each Seller of Standard Offer
Service will be based on a 90 day true-up for that month submitted to NEPOOL by
the Buyer. The adjusted SOS Supplier Billing Amount will be the adjusted
Contract Load Quantity multiplied by a delivery efficiency factor of 0.9238.



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