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                                                                   EXHIBIT 10.34


DATE:          June 11, 1999

TO:            NRG POWER MARKETING INC.

ATTENTION:

FAX NO:

FROM:          NIAGARA MOHAWK POWER CORPORATION

RE:            SWAP TRANSACTION

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Dear Ladies and Gentlemen:

          The purpose of this letter agreement (this "Confirmation") is to
confirm the terms and conditions of the Transaction entered into between us on
the Trade Date specified below (the "Transaction").

          This Confirmation constitutes a "Confirmation" as referred to herein,
and supplements, forms a part of and is subject to, the ISDA Master Agreement,
dated as of June 11, 1999 as amended and supplemented from time to time (the
"Agreement"), between NRG Power Marketing Inc. ("PRODUCER") and Niagara Mohawk
Power Corporation ("NIAGARA MOHAWK").  All provisions contained in the Agreement
govern this Confirmation except as expressly modified below.

          The terms of the Transaction to which this Confirmation relates are as
follows:

THE OBLIGATIONS INCURRED PURSUANT TO THIS TRANSACTION SHALL REQUIRE CASH
PAYMENTS AND SHALL IN NO EVENT BE INTERPRETED TO REQUIRE THE PURCHASE OR SALE OF
ELECTRICITY.

1.        General Terms:

          Trade Date:      June 11, 1999

          Effective Date:  The later of (i) the Closing Date, as such term is
                           defined in the Asset Sales agreement between Niagara
                           Mohawk and NRG Energy, Inc., or (ii) first day of the
                           month following the month in which the later of (i)
                           the NYISO goes into operation, or (ii) Niagara
                           Mohawk's senior notes of the series having the
                           longest maturity then outstanding have been rated
                           investment grade by (a) S&P and Moody's or (b) S&P or
                           Moody's and at least one other rating




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                           agency.

   Termination Date:       The fourth anniversary of the Closing Date.


   Business Day:           Any day other than Saturday, Sunday and any day
                           which is a legal holiday or a day on which banking
                           institutions in New York City are authorized by law
                           or other governmental action to close; and a
                           Business Day shall open at 8:00 a.m. and close at
                           5:00 p.m. Eastern Standard (or Daylight) time.

   Calculation Agent:      NIAGARA MOHAWK.

2. Payments:

   Settlement Dates:       The last day of each calendar month during the Term
                           of this Transaction.

   Settlement Periods:     With respect to each Settlement Date means the
                           period from (but excluding) the immediately
                           preceding Settlement Date (or, in the case of the
                           first Settlement Date, from and including the
                           Effective Date) to (and including) such Settlement
                           Date (or, in the case of the last Settlement Date,
                           to and including the Termination Date).

   Payment Dates:          With respect to each Settlement Date or Settlement
                           Period means the 25th day of the calendar month
                           immediately after such Settlement Date or Settlement
                           Period, as the case may be, subject to adjustment in
                           accordance with the Following Business Day
                           Convention.

   Payment Calculations:   Not less than 5 Business Days prior to each
                           Payment Date, the Calculation Agent shall calculate
                           the amounts payable by each party on such Payment
                           Date and shall notify the other party thereof
                           (including reasonable detail with respect to such
                           calculation).


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     Payment Amounts:      On each Payment Date: (i) NIAGARA MOHAWK shall pay
                           to PRODUCER one-twelfth of the Call Fee - Stage 1 for
                           the preceding Settlement Period, and (ii) PRODUCER
                           shall pay to NIAGARA MOHAWK an amount equal to the
                           sum of (A) the aggregate Capacity Payment for each
                           Interval during such Settlement Period and (B) the
                           Ancillary Services Payment for such Settlement
                           Period.

                           In addition to the foregoing, if NIAGARA MOHAWK has
                           exercised the Call Option with respect to any
                           Interval during a Settlement Period, then on the
                           Payment Date immediately after such Settlement Period
                           (i) NIAGARA MOHAWK shall pay to PRODUCER the sum of
                           (A) the aggregate Call Fee-Stage 2 for each such
                           Interval, and (B) the aggregate NIAGARA MOHAWK Call
                           Amount for each such Interval, and (ii) PRODUCER
                           shall pay to NIAGARA MOHAWK the aggregate PRODUCER
                           Call Amount for each such Interval.

3.   Call Option Exercise:

     Call Option:          With respect to each Interval, NIAGARA MOHAWK shall
                           have the right, but not the obligation, to specify a
                           quantity of electricity (the "Call Quantity") as to
                           which the PRODUCER Call Amount and the NIAGARA Call
                           Amount will be calculated and will become due in
                           accordance with this Transaction.  Notwithstanding
                           the foregoing, PRODUCER shall retain the right to
                           refuse the portion of a Call Quantity for a Unit if
                           the Unit is unexpectedly forced off-line or derated
                           sufficiently to be unable to fulfill the portion of
                           the Call Quantity.  Any such refusal with respect to
                           a Call Quantity, for each Settlement Period, shall
                           be limited to the Decline Quantity Cap.  In the
                           event the Decline Quantity Cap is reached, the
                           Interval Call Quantity schedule shall immediately
                           become effective in full force, PRODUCER shall
                           immediately notify NIAGARA MOHAWK of any such
                           refusal, the reason for such refusal and the Call
                           Quantity refused.  In the event of refusal due to



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                           unavailability NIAGARA Mohawk shall not be required
                           to take the Minimum Capacity quantity. At the request
                           of NIAGARA MOHAWK, PRODUCER shall provide evidence of
                           such Unit unavailability or derate.  Any exercise
                           which is refused in accordance herewith shall be
                           deemed not to have been exercised to the extent of
                           the Call Quantity so refused.

                           Call Quantities shall be subject to the following
                           limitations: (i) no individual Unit Call Quantity
                           nomination schedule can change by more than its
                           response rate (set forth in Schedule A hereto);  (ii)
                           Minimum Capacity and Minimum Down Time Times (set
                           forth in Schedule A hereto), must be adhered to in
                           the nomination for Call Quantities (e.g. to adhere to
                           the Minimum Down Time, if a Call Quantity is
                           scheduled to zero, the Call Quantity cannot exceed
                           zero again until the Minimum Down Time is met, (iii)
                           the Call Quantity for an Interval is limited to the
                           Maximum Capacity set forth in Schedule A hereto, (iv)
                           the aggregate calendar year Call Quantity limit
                           cannot exceed the amount set forth in Schedule B.

Call Option
Exercise Procedure:

                           Schedule D shall be deemed to be the Call Quantity.
                           For Settlement Periods beyond September 2001, NIAGARA
                           MOHAWK shall have the right to amend Schedule D for
                           each Capability Period with a written notice one
                           month prior to each Capability Period.  Such Schedule
                           D amendment shall not change the aggregate Call
                           Quantity for (i) any Capability Period (ii) any
                           calendar year.

                           For any Call Quantity refused by producer NIAGARA
                           MOHAWK shall have the right to make up such
                           quantities by the following procedure. NIAGARA MOHAWK
                           may exercise the Call Option with respect to any
                           Interval by delivery of an exercise notice to
                           PRODUCER (which may be delivered orally, including by
                           telephone). Any such notice shall specify the
                           relevant Interval and Call Quantity (in MWh), and
                           shall be given prior to 5:00 PM (New York time) on
                           the Friday preceding the





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                           week in which such Interval occurs. A week shall
                           consist of the period commencing with the hour ending
                           at 0100 on Monday, New York time and ending with the
                           hour ending at 2400 on Sunday, New York time.

                           If any notice is delivered orally, NIAGARA MOHAWK
                           will execute and deliver a written confirmation
                           confirming the substance of that notice within two
                           Business Days of that notice.  Failure to provide
                           that written confirmation will not affect the
                           validity of that oral notice.

4.       Definitions:

         "Ancillary Services Payment": For each Settlement Period means an
amount equal to a Portion (as defined below) of the payments which NIAGARA
MOHAWK makes to the NYISO during such Settlement Period for Ancillary services
(including, specifically, reactive supply and voltage support, regulation and
frequency response, and operating reserves).  The Portion of such payments for
each Settlement Period shall be equal to the product of (X) the ratio of the
Call Quantity during such Settlement Period divided by the public sales of
NIAGARA MOHAWK times (Y) the payments which NIAGARA MOHAWK makes to the NYISO
for such ancillary services.

         "Call Amount": Shall have the meaning defined in PRODUCER Call Amount
and NIAGARA Call Amount.

         "Call Fee - Stage 1": For each Settlement Period means an amount for
the applicable Unit and Settlement Period determined by the Calculation Agent
based on Schedule C hereto.

         "Call Fee - Stage 2": For each Interval during which the Call Option is
exercised, an amount for the applicable Unit and Interval determined by the
Calculation Agent based on Schedule C hereto; provided that (i) a warm start
Call Fee - Stage 2 shall apply, and a cold start Call Fee shall not apply, with
respect to an Interval if the Call Option has been exercised and the Call
Quantity was zero for the preceding Intervals but was greater than zero for any
Interval during the preceding 10 Intervals, and (ii) a cold start Call Fee -
Stage 2 shall apply, and warm start Call Fee - Stage 2 shall not apply, if the
Call Option has been exercised and the Call Quantity was zero for the
preceding 10 Intervals. Notwithstanding the above, a Call Fee - Stage 2 shall
not apply if the Call Option was exercised in the preceding interval.

         "Call Quantity": Shall have the meaning described in Article 3 on page
3.




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         "Capability Period": Shall mean each of two six-month intervals whereby
the winter capability period includes the calendar months of November through
April and the summer capability period includes the calendar months of May
through October.

         "Capacity": For each Interval means the amount of capacity set forth in
Schedule A hereto under the column entitled Max Capacity.

         "Capacity Payment": For each Interval means the Market Capacity Price
in $/MW multiplied by the Capacity for such Interval.

         "Decline Quantity Cap": For each Settlement Period, the PRODUCER's
right to decline the Call Quantity due to unexpected forced outage or derate
shall be limited on a previous six-Scheduled Quantity Month basis.  The Decline
Quantity Cap is defined as the Maximum Capacity set forth in Schedule A times
the Intervals that make up the previous six Scheduled Quantity Months (adjusted
for leap year) times the Equivalent Forced Outage Rate ("EFOR") set forth in
Schedule A.  The declined quantity shall be calculated on a rolling Interval
basis during the previous six-Scheduled Quantity Months (for example, hour
ending 1400 on February 15, last year through hour ending 1300 February 15, this
year including all of the Scheduled Quantity Months).  Furthermore, it is
understood that on the Closing Date, it shall be deemed that the previous
six-Scheduled Quantity Months have an EFOR as listed in Schedule A.

         "Interval": one hour.

         "Market Capacity Price": Shall equal zero at any time when (i) no
separate market for capacity exists, or (ii) capacity obligations for load
serving entities cease to exist in the NYISO Tariff.  Commencing on the first
day of the month following the calendar month in which the NYISO is initially
established and operating and only if there then exists a separate market for
capacity, the Market Capacity Price shall mean the price paid to producers or
by load serving entities for capacity at the respective generator plant bus-
bar location, established by the most recent NYISO capacity auction.
                                             N
                                             E [P(i) * V(i))/H(i)]
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                        $/MWh(1) =         ___________

_________________________

         (1) As an example, consider three tranches: (1) 2,100 MW at $1,000/MW
per month, (2) 2,000 MW at $2,700/MW per 3-month, (3) 6,000 MW at $6,600/MW per
6-month.  The resultant price is equal to the following:

$/MWh    =        { ($1,000/MW*2,100 MW)/720 hr       =$1.43/MWh
                  + ($2,700/MW*2,000 MW)/2,160 hr
                  + ($6,600/MW*6,000 MW)/4,380 hr}
                           _________________________


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                                    N
                                    E  [V(i)]
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         where:

         "N" is the number of individual Capacity Tranches sold at auction;

         "P(i)", is the sales price (in S/MW) of the ith Capacity Tranche sold
         at auction;

         "H(i)", is the capacity entitlement (in hours) corresponding to the
         ith Capacity Tranche sold at auction;

         "V(i)", is volume of Capacity (in MW) in the Capacity Tranche sold at
         auction; and

         "Capacity Tranche" means an individual block of auction dates and hours
         of capacity entitlement.

         Prior to the establishment of the Market Capacity Price, and if
capacity obligations for load serving entities exist in the NYISO Tariff then
NIAGARA MOHAWK shall retain the right to claim the Capacity, and PRODUCER must
provide such Capacity, for NIAGARA MOHAWK's capacity requirements to the NYISO.
In the event the PRODUCER is unable to provide Capacity acceptable to the NYISO
in the amount claimed by NIAGARA MOHAWK from its own sources, the PRODUCER must
procure the CAPACITY from the market and provide it to NIAGARA MOHAWK at no cost
to NIAGARA MOHAWK.  In the event the PRODUCER fails to provide such Capacity,
PRODUCER shall be charged a penalty equivalent to the greater of (i) the penalty
rate assessed by the NYISO, or (ii) the capacity rate component of NIAGARA
MOHAWK's Service Classification Number 6 Tariff.

         "Market Price": Means for any Interval commencing on the first day of
the month following the calendar month in which the NYISO Establishment Date
occurs, the day ahead locational based market price ("LBMP") paid to producers
for energy, at the Unit's bus bar or the region in which the Unit's bus bar is
located, specified and published by the NYISO.

         "NIAGARA MOHAWK Call Amount": For each Interval during which the Call
Option is exercised, an amount equal to the product of the Call Quantity for
such Interval multiplied by the Fixed Price ("P") for such Interval set forth in
Schedule C hereto.

         "NYISO" is the New York Independent System Operator which operates the
bulk power electric system pursuant to the FERC approved tariff which was filed
by the

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                        (2,100 MW + 2,000 MW + 6,000 MW)


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members of the New York Power Pool on December 19, 1998.

         "PRODUCER Call Amount": For any Interval during which the Call Option
is exercised, an amount equal to the product of the Call Quantity for such
Interval multiplied by the Market Price for such Interval.


         "PSC": Shall mean the New York Public Service Commission.

         "Scheduled Quantity Month": Shall mean any calendar month in which a
Call Quantity is pre-scheduled pursuant to Schedule D; specifically the calendar
months of June, July, August, December, January, February, and the month of
March during the year 1999, and 2000 for Huntley, but excluding the month of
December during the year 2002 for Dunkirk.

         "Unit": Shall be PRODUCER's electric generating units as shown in
Schedule A.

5.       Further Assurances

         Subject to the terms and conditions contained herein, upon the request
from time to time of either party hereto, the other party shall promptly execute
and deliver or use its reasonable best efforts to cause to be executed and
delivered, such consents, approvals and other instruments, including, without
limitation, assignments of this Transaction as collateral, estoppel certificates
and utility certificates, in form and substance reasonably satisfactory to both
parties and their respective counsel to implement any financing or other
material business transaction undertaken by the requesting party.

6.       Account Details:

         Account Details of NIAGARA MOHAWK:
Bank name:        Citibank
         Address:          399 Park Avenue
                           New York, New York 10022
         ABA #:
         Account name:     Niagara Mohawk Power Corporation
         Account #:

         Account Details of PRODUCER:
         Bank name:        LaSalle National Bank
         Address:          Chicago, IL
         ABA #:
         Account name:     NNRG Power Marketing Inc.
         Account #:


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    Please confirm that the foregoing correctly sets forth the terms of our
agreement by executing the copy of this Confirmation enclosed for that purpose
and returning it to us or by sending to us.


                                 Yours sincerely,



                                 NIAGARA MOHAWK POWER CORPORATION



                                 By:  Clement Nadeau
                                      ---------------------------------------
                                      Name:  CLEMENT NADEAU
                                      Title: Vice President

Confirmed as of the
date first above written:


NRG POWER MARKETING INC.



By: James J. Bender
    ---------------------------
    Name:  James J. Bender
    Title: Vice President











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