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                                                                   EXHIBIT 10.33

                             THIRD AMENDMENT TO THE
                    EMPLOYMENT AGREEMENT OF DAVID H. PETERSON


         WHEREAS, David H. Peterson (the "Executive") and NRG Energy Inc.
("NRG") have previously entered into an Employment Agreement (the "Agreement")
dated June 28, 1995, amended on June 27, 1999 and further amended on August 26,
1999; and

         WHEREAS, the parties wish to further amend the agreement to extend its
term for four (4) additional years, to provide a minimum severance benefit in
the event Executive's employment is terminated in connection with a change in
control, and to preserve certain 1999 retirement benefit calculation assumptions
if specific performance goals are achieved.

         RESOLVED, that sections 1, 3(c)(i), and 5(a) of the Agreement are
hereby amended to read as follows:

1. Term. NRG shall employ the Executive, and the Executive shall serve NRG, on
the terms and conditions set forth in this Agreement, for the period (the
"Employment Period") commencing on June 28, 1995 (the "Effective Time") and
ending JUNE 27, 2004.

3. Compensation.

   (c)            Additional Benefits.

                           (i) Supplemental Retirement Benefits. During the
                  Employment Period, the Executive shall participate in a
                  supplemental executive retirement plan ("SERP") such that the
                  aggregate value of the retirement benefits that he and his
                  spouse will receive at the end of the Employment Period under
                  all defined benefit plans of NRG, NSP and their affiliates
                  (whether qualified or not) will be not less than the aggregate
                  value of the benefits he would have received had he continued,
                  through the end of the Employment Period to participate in the
                  NSP Deferred Compensation Plan, the NSP Excess Benefit Plan,
                  and the NSP Pension Plan; provided, that benefits under the
                  SERP, shall also include the amount, if any, that the NSP
                  Pension Plan's actuaries reasonably estimate is necessary to
                  compensate Executive for the monthly defined benefit payments
                  the Executive did not receive, but would have received during
                  the term of this Agreement and prior to the date of his actual
                  termination of employment if monthly benefit payments had
                  commenced at the end of the month following the month in which
                  the Executive first became eligible for Early Retirement under
                  the NSP Pension Plan. In addition, the SERP shall offer the
                  Executive the option to receive his benefits thereunder in a
                  single lump sum payment using actuarial assumptions that the
                  NSP Pension Plan's actuaries determine are reasonable in the
                  aggregate; provided, that such lump sum payment option shall
                  be subject to the consent of the Board in its sole discretion
                  and must be requested by the Executive not less than twelve
                  months prior to the Executive's termination of employment. IF
                  THE EXECUTIVE ELECTS A LUMP SUM PAYMENT, THE LUMP SUM SHALL BE
                  CALCULATED USING THE JOINT




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                  AND SURVIVOR ANNUITY FACTORS IN EFFECT FOR 1999 UNDER THE NSP
                  PENSION PLAN IF THE FOLLOWING PERFORMANCE GOALS HAVE BEEN
                  ACHIEVED PRIOR TO PAYMENT OF THE LUMP SUM: EARNINGS PER SHARE
                  (EPS) GROWTH OF 20 PERCENT PER YEAR (ASSUMING ADEQUATE EQUITY
                  FUNDING IS PROVIDED) AND NRG RETURN GUIDELINES OF UTILITY (NSP
                  AUTHORIZED RATE OF RETURN) PLUS 1 1/2 PERCENT LONG-TERM RETURN
                  ON EQUITY (ROE), ON AVERAGE, FOR NEW INVESTMENTS. IF THE ROE
                  GOAL IS NOT ACHIEVED, The ADDITIONAL BENEFIT DERIVED FROM THE
                  USE OF THE 1999 JOINT AND SURVIVOR ANNUITY FACTORS WILL BE
                  PRORATED PROVIDED THAT THE EPS GOAL IS MET AND AVERAGE ANNUAL
                  ROE IS AT LEAST 8 PERCENT. FOR EXAMPLE, IF, ON AVERAGE, 20
                  PERCENT EPS GROWTH AND A ROE OF UTILITY PLUS 1 1/2 PERCENT is
                  ACHIEVED, THE FULL JOINT AND SURVIVOR BENEFIT WILL BE
                  PROVIDED. IF AVERAGE ANNUAL ROE IS 8 PERCENT OR LESS, NO
                  BENEFIT BASED ON THE JOINT AND SURVIVOR ANNUITY FACTORS WILL
                  BE PROVIDED. Finally, if the Executive dies while employed, or
                  deemed pursuant to paragraph (a) of section 5 to be employed
                  by NRG, his surviving spouse (or, if, he has no surviving
                  spouse, his estate) shall be entitled to receive a benefit
                  equal in value to the difference between the pension benefit
                  that the Executive would have received if he had retired
                  (rather than died ) on the date of his death and received a
                  lump sum pension benefit and the lump sum value of the pension
                  payable in the absence of this provision; provided, that in
                  the case where the Executive has no surviving spouse, the
                  benefit pursuant to this sentence shall be paid in a lump sum;
                  and provided, further, that in the case where the Executive
                  has a surviving spouse, the benefit pursuant to this sentence
                  shall be paid in the form of a single life annuity for her
                  life unless she elects a single lump sum payment and the
                  Board, in its sole discretion, consents to the lump sum
                  payment. Notwithstanding anything in the preceding sentence to
                  the contrary, if despite reasonable efforts NRG is unable to
                  obtain insurance on the life of the Executive with a death
                  benefit equal to the anticipated after-tax cost to NRG of the
                  benefit described in the preceding sentence at an average
                  annual premium cost of less than $7,000, then the value of
                  such benefit payable to Executive's surviving spouse or estate
                  shall be reduced so that its after-tax cost to NRG does not
                  exceed the amount of insurance on the life of the Executive
                  that NRG could obtain at such cost.

5. Obligations of NRG upon Termination.

                  (a) By NRG Other Than for Cause or Disability; By the
         Executive for Good Reason. If, during the Employment Period, NRG
         terminates the Executive's employment, other than for Cause or
         Disability, or the Executive terminates employment for Good Reason, NRG
         shall continue to provide the Executive with the compensation and
         benefits set forth in Section 3 as if he had remained employed by NRG
         pursuant to this Agreement through the end of the Employment Period and
         then retired (at which time he will be treated as eligible for all
         retiree welfare benefits and other benefits provided to retired senior
         executives, as set forth in Section 3(b) and (c)); PROVIDED THAT IF THE
         TERMINATION IS A RESULT OF A CHANGE OF CONTROL, AS THAT TERM IS DEFINED
         IN THE NRG OFFICER EQUITY PLAN, THE COMPENSATION AND BENEFITS SHALL BE
         CONTINUED FOR THE LONGER OF THIRTY (30) MONTHS OR THROUGH THE END OF
         THE EMPLOYMENT PERIOD; provided, that the Incentive





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         Compensation for such period shall be equal to the greater of the
         target Incentive Compensation that the Executive would have been
         eligible to earn for such period or the Incentive Compensation awarded
         for the last complete incentive plan year ending prior to Executive's
         Termination of Employment; provided, further, that in lieu of
         stock-based or equity-based awards, the Executive shall be paid cash
         equal to the fair market value at the time of grant, if any,
         (determined without regard to any restrictions) of the awards that
         would otherwise have been granted; and provided, finally, that during
         any period when the Executive is eligible to receive benefits of the
         type described in paragraph (b) (i) of Section 3 under another
         employer-provided plan the benefits provided by NRG under this
         paragraph (a) of Section 5 may be made secondary to those provided
         under such other plan. The payments and benefits provided pursuant to
         this paragraph (a) of Section 5 are intended as liquidated damages for
         a termination of the Executive's employment by NRG other than for Cause
         or Disability or for the actions of NRG leading to a termination of the
         Executive's employment by the Executive for Good Reason, and shall be
         the sole and exclusive remedy therefor.

         RESOLVED FURTHER, that the Agreement as amended, shall remain in full
force and effect.




 /s/ David H. Peterson                       Date:  20 Oct. 1999
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David H. Peterson



NRG ENERGY, INCORPORATED


By    /s/ Cynthia L. Lesher                  Date:  20 Oct. 1999
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Its       Director
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