Exhibit 10.27.3
                                   
                                   
                  ASSIGNMENT AND ASSUMPTION AGREEMENT
                                   
          This ASSIGNMENT AND ASSUMPTION AGREEMENT, dated as of
     December 10, 1997 (this "Agreement"), is made and entered into
     by and between NRG ENERGY, INC., a Delaware corporation ("NRG
     Energy"), and NRGG FUNDING INC., a Delaware corporation ("NRGG
     Funding").
     
                               RECITALS
                                   
          WHEREAS, NRG (Morris) Cogen, LLC (the "Borrower") entered
     into the Construction and Term Loan Agreement, dated as of
     September 15, 1997 (the "Credit Agreement"), with the banks
     party thereto (the "Banks"), The Chase Manhattan Bank as agent
     for the Banks (in such capacity, the "Agent Bank") and The
     Chase Manhattan Bank as collateral agent for the Banks (in such
     capacity, the "Collateral Agent"), pursuant to which the Banks
     have agreed to make construction and term loans and extend
     other credit to the Borrower for the purpose of financing the
     cost of developing, constructing, starting-up and operating an
     approximately 117 megawatt gas-fired cogeneration facility in
     Morris, Illinois (the "Project");
     
          WHEREAS, as a condition precedent to the Banks, the Agent
     Bank and the Collateral Agent entering into the Credit
     Agreement and the Banks extending credit to the Borrower
     thereunder, NRG Energy executed and delivered the Equity
     Commitment Agreement, dated as of September 15, 1997 (the
     "Equity Commitment Agreement"), in favor of the Borrower and
     the Collateral Agent, pursuant to which NRG Energy agreed to
     make equity contributions to the Borrower from time to time;
     
          WHEREAS, pursuant to the Membership Interest Purchase
     Agreement, dated as of the date hereof (the "Purchase
     Agreement"), NRG Energy is transferring all of its equity
     interest in the Borrower to NRGG Funding;
     
          WHEREAS, upon execution and delivery of the Purchase
     Agreement, NRGG Funding will own 99% of the membership
     interests in the Borrower and, accordingly, will derive
     substantial benefit from the extension of credit by the Banks
     to the Borrower under the Credit Agreement; and
     
          WHEREAS, it is condition precedent to the Banks continuing
     to extend credit to the Borrower under the Credit Agreement
     that NRG Energy and NRGG Funding execute and deliver this
     Agreement, the form and substance of which must be consented to
     by the Required Banks;
     
     
     
                               AGREEMENT
     
          NOW, THEREFORE, in consideration of the foregoing and for
     other good and valuable consideration, the receipt and adequacy
     of which are hereby acknowledged, the parties hereto hereby
     agree as follows:
     
                               ARTICLE I
               DEFINED TERMS; PRINCIPLES OF CONSTRUCTION
     
          Section 1.1  Defined Terms.  (a) Unless otherwise defined
     herein, capitalized terms used in this Agreement shall have the
     meanings given to such terms in the Equity Commitment Agreement
     (including terms incorporated therein from the Credit
     Agreement).
     
          (b) The following terms shall have the following
     respective meanings:
     
               "Amended LLC Agreement" shall have the meaning given
     to the term "LLC Agreement" in the Pledge Agreement.
     
               "Equity Guarantee" shall mean the Equity Commitment
     Guaranty, dated as of the date hereof, by NRG Energy in favor
     of the Borrower and the Collateral Agent.
     
               "First Amendment to the Credit Agreement" shall mean
     the Amendment and Consent, dated as of the date hereof, among
     the Borrower and the Banks.
     
               "NRGG Documents" shall mean, collectively, the NRGG
     Financing Documents and the NRGG Purchase Documents.
     
               "NRGG Financing Documents" shall mean this Agreement,
     the Equity Commitment Agreement, the Equity Guarantee, the
     Pledge Agreement, the Subordination Agreement, the First
     Amendment to the Credit Agreement and the Financing Statements
     (as defined under the Pledge Agreement) filed in connection
     with the Liens granted to the Collateral Agent in the Pledge
     Agreement.
     
               "NRGG Purchase Documents" shall mean the Purchase
     Agreement, the Amended LLC Agreement, the Supplemental Loan
     Agreement and the Subordinated Pledge Agreement.
     
               "Pledge Agreement" shall mean the Pledge and Security
     Agreement, dated as of the date hereof, among NRGG Funding, NRG
     MI and the Collateral Agent.
     
               "Purchase Agreement" shall mean the Membership
     Interest Purchase Agreement, dated as of the date hereof,
     between NRG Energy, NRG Generating and NRGG Funding.
     
                                   2
     
     
     
               "Subordinated Pledge Agreement" shall mean the
     Subordinated Pledge and Security Agreement, dated as of the
     date hereof, among NRGG Funding, NRG MI and NRG Energy.
     
               "Subordination Agreement" shall mean the
     Subordination Agreement, dated as of the date hereof, between
     NRG Energy and the Collateral Agent.
     
               "Supplemental Loan Agreement" shall mean the
     Supplemental Loan Agreement, dated as of the date hereof,
     between NRG Energy and NRGG Funding.
     
          Section 1.2  Principles of Construction.  Unless otherwise
     expressly provided herein, the principles of construction set
     forth in Section 1.4 of the Credit Agreement shall apply to
     this Agreement.
     
                              ARTICLE II
               ASSIGNMENT AND ASSUMPTION; ACKNOWLEDGMENT
     
          Section 2.1  Assignment and Assumption.  NRG Energy hereby
     assigns, conveys and transfers all of NRG Energy's estate,
     right, title and interest in, to and under the Equity
     Commitment Agreement to NRGG Funding and NRGG Funding hereby
     assumes all liabilities, obligations and duties thereunder.
     
          Section 2.2  Acknowledgment and Consent.  By executing
     this Agreement, the parties hereto acknowledge, consent and
     agree that, upon the satisfaction of the conditions set forth
     in Article IV of this Agreement, NRG Energy shall be released
     from all liabilities, obligations and duties under the Equity
     Commitment Agreement.
     
                              ARTICLE III
                    REPRESENTATIONS AND WARRANTIES
     
          NRGG Funding represents and warrants as follows, which
     representations and warranties shall survive the execution and
     delivery of this Agreement:
     
          Section 3.1  Due Incorporation; Qualification.  NRGG
     Funding is a corporation duly organized and validly existing
     under the Laws of the State of Delaware, and is qualified to
     own property and transact business in every jurisdiction where
     the ownership of its property and the nature of its business as
     currently conducted and as contemplated to be conducted
     requires it to be qualified, except where the failure to so
     qualify could not reasonably be expected to result in a
     Material Adverse Effect (as herein defined).  For purposes of
     this Agreement, "Material Adverse Effect" shall mean a material
     adverse effect on any of (i) the operations, business,
     financial condition or property of NRGG Funding and its
     subsidiaries on a consolidated basis, (ii) the ability of NRGG
     Funding to perform in a timely manner its material obligations
     under the NRGG Documents to which
     
                                   3
     
     
     
     it is or is intended to be a party or (iii) the rights and
     interests of the Banks, the Agent Bank and the Collateral Agent
     under the Transaction Documents.
     
          Section 3.2  Authority; Authorization, Execution and
     Delivery; Enforceability.  NRGG Funding has full power,
     authority and legal right to enter into this Agreement and the
     other NRGG Documents to which it is or is intended to be a
     party and to perform its obligations hereunder and thereunder.
     The execution, delivery and performance of the NRGG Documents
     to which NRGG Funding is or is intended to be a party have been
     duly authorized by all necessary corporate action on the part
     of NRGG Funding.  The NRGG Documents to which NRGG Funding is
     or is intended to be a party have been duly executed and
     delivered by NRGG Funding and constitute legal, valid and
     binding obligations of NRGG Funding enforceable against NRGG
     Funding in accordance with their terms, except as
     enforceability may be limited by applicable bankruptcy,
     insolvency, moratorium or other similar Laws affecting
     creditors' rights generally and except as enforceability may be
     limited by general principles of equity (whether considered in
     a suit at law or in equity).
     
          Section 3.3  Consents; Governmental Approvals.  No consent
     of any other party (including, without limitation, stockholders
     or creditors of NRGG Funding) and no Governmental Approval is
     required which has not been obtained for the execution,
     delivery and performance by NRGG Funding of the NRGG Documents
     to which it is or is intended to be a party, other than any
     consent or Governmental Approval not required as of the date
     this representation is made or deemed made and that will be
     obtained on or before the date on which such consent or
     Governmental Approval is required to be obtained.
     
          Section 3.4  No Conflicts.  The execution, delivery and
     performance by NRGG Funding of the NRGG Documents to which it
     is or is intended to be a party will not (i) require any
     consent or approval of the Board of Directors of NRGG Funding
     which has not been obtained, (ii) violate the provisions of
     NRGG Funding's certificate of incorporation or bylaws, (iii)
     violate the provisions of any Law (including, without
     limitation, any usury Laws), regulation or order of any
     Governmental Authority applicable to NRGG Funding, (iv) result
     in a breach of or constitute a default under any material
     agreement relating to the management or affairs of NRGG
     Funding, or any indenture or loan or credit agreement or any
     other material agreement, lease or instrument to which NRGG
     Funding is or is intended to be a party or by which NRGG
     Funding or any of its material properties may be bound or (v)
     result in or create any Lien (other than Permitted Liens)
     under, or require any consent which has not been obtained
     under, any indenture or loan or credit agreement or any other
     material agreement, instrument or document, or the provisions
     of any order, writ, judgment, injunction, decree, determination
     or award of any Governmental Authority binding upon NRGG
     Funding or any of its properties.
     
                                   4
     
     
     
          Section 3.5  Litigation.  No Event of Bankruptcy has
     occurred with respect to NRGG Funding and there is no action,
     suit or proceeding at Law or in equity or by or before any
     Governmental Authority, arbitral tribunal or other body now
     pending against NRGG Funding or, to the best knowledge of NRGG
     Funding, threatened against NRGG Funding which questions the
     validity or legality of or seeks damages in connection with the
     NRGG Documents to which NRGG Funding is or is intended to be a
     party.
     
          Section 3.6  Compliance with Laws.  NRGG Funding has been
     in the past and is in current compliance with all Laws
     applicable to it, except where failure to comply could not
     reasonably be expected to result in a Material Adverse Effect
     (as defined in Section 3.1 hereof).
     
          Section 3.7  Financial Statements.  The financial
     statements of NRGG Funding provided or to be provided as
     contemplated in Section 4.5 hereof or in any other Financing
     Document are or will be true, correct and complete as of the
     dates specified therein and fully and accurately present the
     financial condition of NRGG Funding as of the dates and for the
     periods specified.  There has been no material adverse change
     in the financial condition of NRGG Funding from the date of
     NRGG Funding's most recent audited financial statements
     delivered to the Agent Bank (except as heretofore disclosed to
     the Agent Bank in a writing delivered by or on behalf of NRGG
     Funding).
     
          Section 3.8  Regulation.  NRGG Funding is not (a) an
     "investment company" or a company "controlled" by an
     "investment company," within the meaning of the ICA.  NRGG
     Funding is a "subsidiary company" of a "holding company," as
     those terms are defined in PUHCA, but NRGG Funding is exempt
     from all provisions of PUHCA except Section 9(a) thereof by
     virtue of Section 3(a)(2) thereof.  NRGG Funding is not a
     "public utility" or similar entity under applicable federal or
     state Law.
     
                              ARTICLE IV
                         CONDITIONS PRECEDENT
     
          The release of NRG Energy of its liabilities, obligations
     and duties under the Equity Commitment Agreement is subject to
     the following conditions precedent:
     
          Section 4.1  NRGG Financing Documents.  The Agent Bank
     shall have received each NRGG Financing Document (together with
     all amendments, supplements, schedules and exhibits thereto),
     each of which (a) shall have been duly authorized, executed and
     delivered by each Person party thereto (other than the Agent
     Bank, the Collateral Agent and the Banks), (ii) shall be in
     form and substance reasonably satisfactory to each Bank and
     (iii) shall be in full force and effect.  All representations
     and warranties contained in each NRGG Financing Document shall
     be true and correct in all material respects and no default or
     event of default shall have occurred thereunder.
     
                                   5
     
     
     
          Section 4.2  NRGG Purchase Documents.  The Agent Bank
     shall have received copies of each NRGG Purchase Document
     (together with all amendments, supplements, schedules and
     exhibits thereto), each of which (a) shall have been duly
     authorized, executed and delivered by each Person party thereto
     (other than the Agent Bank, the Collateral Agent and the
     Banks), (ii) shall be in form and substance reasonably
     satisfactory to the Agent Bank and (iii) shall be in full force
     and effect.  All representations and warranties contained in
     each NRGG Purchase Document shall be true and correct in all
     material respects and no default or event of default shall have
     occurred thereunder.
     
          Section 4.3  Pledged Collateral.  Pursuant to the terms of
     the Pledge Agreement, the Liens on the Pledged Collateral (as
     defined in the Pledge Agreement) shall have been duly created
     or attached and such Liens shall have been perfected to create
     a first priority security interest in and charge over the
     Pledged Collateral (as defined in the Pledge Agreement) in
     favor of the Collateral Agent for the benefit of itself and the
     other Secured Parties.  All Taxes, fees and other charges
     payable in connection therewith shall have been paid in full by
     NRGG Funding or the Borrower.
     
          Section 4.4  Corporate Documents.  The Agent Bank shall
     have received each of the following in form and substance
     satisfactory to it:
     
               (a) a certificate of an Authorized Officer of NRGG
          Funding, dated as of the date hereof, certifying as true,
          complete and correct attached copies of (i) the
          certificate of incorporation of NRGG Funding, (ii) the
          bylaws of NRGG Funding and (iii) the resolutions of the
          board of directors of NRGG Funding approving and
          authorizing the execution, delivery and performance of the
          NRGG Documents to which NRGG Funding is or is intended to
          be a party;
     
               (b) a certificate of an Authorized Officer of NRGG
          Funding, dated as of the date hereof, certifying the names
          and true signatures of the incumbent officers of NRGG
          Funding authorized to sign the NRGG Documents to which
          NRGG Funding is or is intended to be a party; and
     
               (c) evidence that NRGG Funding is duly authorized to
          carry on its business as now being conducted by it, and as
          proposed to be conducted by it, in each jurisdiction in
          which it is required to be so authorized.
     
          Section 4.5  Financial Statements.  The Agent Bank shall
     have received true, correct and complete copies of the audited
     financial statements for the most recently completed fiscal
     year of NRGG Funding.
     
          Section 4.6  Legal Opinions.  The Agent Bank shall have
     received (a) an opinion of counsel to NRGG Funding
     substantially in the form of Exhibit A hereto and otherwise in
     form and substance satisfactory to the Agent Bank and (b) an
     opinion of counsel to
     
                                   6
     
     
     
     NRG Energy substantially in the form of Exhibit B hereto and
     otherwise in form and substance satisfactory to the Agent Bank.
     
          Section 4.7  Appointment of Agent.  NRGG Funding shall
     have appointed an agent for service of process on terms
     satisfactory to the Agent Bank and shall have paid all fees
     necessary for such process agent to act as such through the
     Final Maturity Date.
     
                               ARTICLE V
                             MISCELLANEOUS
                                   
          Section 5.1  Notices.  NRGG Funding's address and
     telephone and telecopier numbers for the provision of notices
     under each NRGG Document to which it is or is intended to be a
     party are as follows:
     
               NRGG Funding Inc.
               1221 Nicollet Mall, Suite 610
               Minneapolis, MN 55403
                     Attention:   President and Chief Executive
                     Officer
                    Telephone:  (612) 373-5300
                    Telecopier: (612) 373-5430
     
          Section 5.2  Third Party Beneficiaries.  The agreements of
     the parties hereto are intended to benefit the Banks, the Agent
     Bank and the Collateral Agent and their respective successors
     and assigns.
     
          Section 5.3  Severability.  In case any provision in or
     obligation under this Agreement shall be invalid, illegal or
     unenforceable in any jurisdiction, the validity, legality and
     enforceability of the remaining provisions or obligations, or
     of such provision or obligation in any other jurisdiction,
     shall not in any way be affected or impaired thereby.
     
          Section 5.4  Counterparts.  This Agreement may be executed
     in any number of counterparts and by the different parties
     hereto on separate counterparts, each of which when so executed
     and delivered shall be an original, but all of which shall
     together constitute one and the same instrument.
     
          Section 5.5  Headings Descriptive.  The headings of the
     several Sections of this Agreement are inserted for convenience
     only and shall not in any way affect the meaning or
     construction of any provision of this Agreement.
     
                                   7
     
     
     
          Section 5.6  Governing Law.  This Agreement is a contract
     made under the Laws of the State of New York of the United
     States and shall for all purposes be governed by and construed
     in accordance with the Laws of such State without regard to the
     conflict of law rules thereof (other than Section 5-1401 of the
     New York General Obligations Law).
     
          Section 5.7  Entire Agreement.  This Agreement, together
     with any other agreement executed in connection herewith, is
     intended by the parties as a final expression of their
     agreement as to the matters covered hereby and is intended as a
     complete and exclusive statement of the terms and conditions
     thereof.
     
     
       [THE REMAINDER OF THIS PAGE IS INTENTIONALLY LEFT BLANK]
     
                                   8
     
     
     
               IN WITNESS WHEREOF, the parties hereto have caused
     this Assignment and Assumption Agreement to be duly executed
     and delivered by their officers thereunto duly authorized as of
     the date first above written.
     
     
                             NRG ENERGY, INC.
     
                             By:/s/ David H. Peterson
                                 Name:  David H. Peterson
                                 Title: President
     
     
                             NRGG FUNDING INC.
     
                             By: /s/ Timothy P. Hunstad
                                 Name:  Timothy P. Hunstad
                                 Title: VP-CFO
     
     Acknowledged and consented to:
     
     THE CHASE MANHATTAN BANK,
          as a Bank
     
     By:  /s/ Kevin P. O'Neill
          Name:  Kevin P. O'Neill
          Title: Vice President
     
     
     THE CHASE MANHATTAN BANK,
          as Agent Bank
     
     By:  /s/ Kevin P. O'Neill
          Name:  Kevin P. O'Neill
          Title: Vice President
     
     
     THE CHASE MANHATTAN BANK,
          as Collateral Agent
     
     By:  /s/ Annette M. Marsula
          Name:  Annette M. Marsula
          Title: Assistant Vice President
     
     
     
     Acknolwedged and consented to:
     
     THE BANK OF NEW YORK
     
     By:  /s/ John N. Wyatt
          Name:  John N. Wyatt
          Title: Vice President
     
     
     NATEXIS BANQUE
     
     By:  /s/ D.J.R. Osten
          Name:  D.J.R. Osten
          Title: First VP
     
     
     THE SUMITOMO TRUST AND BANKING COMPANY, LTD.
     
     By:  /s/ Suraj P. Bhatia
          Name:  Suraj P. Bhatia
          Title: Senior Vice President
     
     
     
                                                        Exhibit A to
                                 Assignment and Assumption Agreement
                                                                    
     
              FORM OF OPINION OF COUNSEL TO NRGG FUNDING
     
               1.  NRGG Funding Inc. (the "Company") is a
     corporation duly organized and validly existing under the laws
     of the State of Delaware and is qualified to do business in
     each jurisdiction in which such qualification is required.
     
               2.  The Company has the corporate or other applicable
     power and authority and full legal right to execute and deliver
     each of the NRGG Documents to which it is a party and to
     perform its obligations thereunder.
     
               3.  The execution, delivery and performance by the
     Company of each NRGG Document to which it is a party have been
     duly authorized by all requisite action on the part of the
     Company.
     
               4.  Each of the NRGG Documents to which the Company
     is a party has been duly executed and delivered by the Company.
     
               5.  Neither the execution and delivery by the Company
     of each NRGG Document to which it is a party, nor the
     performance by it of its obligations under each such NRGG
     Document, contravenes or conflicts with (i) its Certificate of
     Incorporation, or other applicable constituent documents, as
     the case may be, (ii) any agreement or instrument (including,
     without limitation, each other NRGG Document) to which it is a
     party or by which its properties or assets are bound and (iii)
     any judicial or administrative judgment, injunction, order or
     decree that is binding upon it or its properties or assets.
     
               6.  No order, consent, approval, license,
     authorization or validation of, or filing, recording or
     registration with, or exemption by, any court, governmental
     body or authority, or any subdivision thereof, is required to
     authorize or is required in connection with the execution and
     delivery by the Company of any NRGG Document to which it is a
     party, or in connection with the performance of its obligations
     thereunder or the consummation of the transactions contemplated
     thereby other than those that have been obtained or made and
     are in full force and effect or will be obtained or made prior
     to the time the same is required and thereafter remains in full
     force and effect.
     
               7.  Each of the NRGG Documents to which the Company
     is a party constitutes a valid and binding obligation of the
     Company enforceable against the Company in accordance with its
     terms.
     
     
     
               8.  Neither the execution, delivery and performance
     by the Company of each of the NRGG Documents to which it is
     party, nor the consummation by the Company of the transactions
     contemplated therein, violates any Applicable Laws.
     
               9.  All Government Approvals which under Applicable
     Laws are required to be obtained or made by the Company in
     connection with the due execution and delivery of, or
     performance by the Company of its obligations under, each of
     the NRGG Documents to which it is party have been obtained or
     made.
     
                 This  opinion may be relied upon by the Banks,
      the Agent Bank, the Collateral Agent and any assignees of
      or  participants in the interests of the Banks under  the
      Credit                                         Agreement.
      
                                                                    
                                                        Exhibit B to
                                 Assignment and Assumption Agreement
     
     
               FORM OF OPINION OF COUNSEL TO NRG ENERGY
     
               1.  NRG Energy, Inc. (the "Company") is a corporation
     duly organized and validly existing under the laws of the State
     of Delaware and is qualified to do business in each
     jurisdiction in which such qualification is required.
     
               2.  The Company has the corporate or other applicable
     power and authority and full legal right to execute and deliver
     each of the NRGG Documents to which it is a party and to
     perform its obligations thereunder.
     
               3.  The execution, delivery and performance by the
     Company of each NRGG Document to which it is a party have been
     duly authorized by all requisite action on the part of the
     Company.
     
               4.  Each of the NRGG Documents to which the Company
     is a party has been duly executed and delivered by the Company.
     
               5.  Neither the execution and delivery by the Company
     of each NRGG Document to which it is a party, nor the
     performance by it of its obligations under each such NRGG
     Document, contravenes or conflicts with (i) its Certificate of
     Incorporation, or other applicable constituent documents, as
     the case may be, (ii) any agreement or instrument (including,
     without limitation, each other NRGG Document) to which it is a
     party or by which its properties or assets are bound and (iii)
     any judicial or administrative judgment, injunction, order or
     decree that is binding upon it or its properties or assets.
     
               6.  No order, consent, approval, license,
     authorization or validation of, or filing, recording or
     registration with, or exemption by, any court, governmental
     body or authority, or any subdivision thereof, is required to
     authorize or is required in connection with the execution and
     delivery by the Company of any NRGG Document to which it is a
     party, or in connection with the performance of its obligations
     thereunder or the consummation of the transactions contemplated
     thereby other than those that have been obtained or made and
     are in full force and effect or will be obtained or made prior
     to the time the same is required and thereafter remains in full
     force and effect.
     
               7.  Each of the NRGG Documents to which the Company
     is a party constitutes a valid and binding obligation of the
     Company enforceable against the Company in accordance with its
     terms.
     
     
     
               8.  Neither the execution, delivery and performance
     by the Company of each of the NRGG Documents to which it is
     party, nor the consummation by the Company of the transactions
     contemplated therein, violates any Applicable Laws.
     
               9.  All Government Approvals which under Applicable
     Laws are required to be obtained or made by the Company in
     connection with the due execution and delivery of, or
     performance by the Company of its obligations under, each of
     the NRGG Documents to which it is party have been obtained or
     made.
     
               This opinion may be relied upon by the Banks, the
     Agent Bank, the Collateral Agent and any assignees of or
     participants in the interests of the Banks under the Credit
     Agreement.
     
     </TEXT>
     </DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.27.4
<SEQUENCE>21
<DESCRIPTION>EXHIBIT 10.27.4  EQUITY COMMITMENT GUARANTY DATED AS OF
          DECEMBER 10, 1997 BY NRG ENERGY IN FAVOR OF CHASE AND NRG
          (MORRIS) COGEN, LLC ("COGEN LLC").
<TEXT>



                                                        Exhibit 10.27.4

                                   
                      EQUITY COMMITMENT GUARANTY

          This EQUITY COMMITMENT GUARANTY (this "Guaranty" or this
"Agreement"), dated as of December 10, 1997, by NRG ENERGY, INC., a
Delaware corporation ("Guarantor"), in favor of NRG (MORRIS) COGEN, LLC
(the "Borrower") and THE CHASE MANHATTAN BANK, as collateral agent for
the Banks (as defined below) (in such capacity, the "Collateral Agent")
under the Construction and Term Loan Agreement, dated as of September
15, 1997 (the "Credit Agreement"), among the Borrower, the Collateral
Agent, the banks party thereto (the "Banks") and The Chase Manhattan
Bank, as agent for the Banks (in such capacity, the "Agent Bank").

                               RECITALS

A.   As a condition precedent to the Agent Bank, the Collateral Agent
and the Banks entering into the Credit Agreement and the Banks making
the Loans and extending other credit to the Borrower thereunder,
Guarantor executed an Equity Commitment Agreement, dated as of
September 15, 1997 (the "Equity Commitment Agreement"), in favor of the
Borrower and the Collateral Agent.

B.   Pursuant to that certain Membership Interest Purchase Agreement,
dated as of the date hereof, Guarantor is selling all of its membership
interests in the Borrower to NRGG Funding Inc. ("NRGG Funding").

C.   Pursuant to an Assignment and Assumption Agreement, dated as of
the date hereof (the "Assignment and Assumption Agreement"), between
Guarantor and NRGG Funding, NRGG Funding is assuming all of Guarantor's
obligations under the Equity Commitment Agreement.

D.   Guarantor owns 45% of the outstanding shares of capital stock of
NRG Generating and NRG Generating owns 100% of the outstanding shares
of capital stock of NRGG Funding.

E.   It is a condition to the Banks' willingness to continue to make
Loans and extend other credit to the Borrower under the Credit
Agreement that Guarantor enter into this Agreement.



F.   Guarantor acknowledges that it will obtain substantial benefit if
the Banks continue to make Loans and extend other credit to the
Borrower under the Credit Agreement.

G.   The obligations of Guarantor hereunder are being incurred
concurrently with the assumption by NRGG Funding of Guarantor's
obligations under the Equity Commitment Agreement pursuant to the
Assignment and Assumption Agreement.

H.   Capitalized terms used but not otherwise defined herein shall have
the respective meanings given them in the Equity Commitment Agreement
(including terms incorporated therein from the Credit Agreement).


                               AGREEMENT

     NOW, THEREFORE, in consideration of the premises set forth above
and other good and valuable consideration, receipt of which is hereby
acknowledged, Guarantor hereby agrees as follows:

1.   Guaranty by Guarantor of NRGG Funding Obligation.  Guarantor
unconditionally and irrevocably guarantees payment to the Borrower and
to the Collateral Agent, for the benefit of the Agent Bank and the
Banks, when due of any and all amounts payable by NRGG Funding to the
Borrower from time to time pursuant to Sections 1 and 2 of the Equity
Commitment Agreement and performance in full of all of NRGG Funding's
obligations under Sections 1 and 2 of the Equity Commitment Agreement.

2.   Additional Provisions to Guarantor Obligations.

     (a) In addition to the obligations under Section 1 of this Agreement,
         Guarantor agrees to pay upon demand all fees and expenses incurred by
         the Collateral Agent and the Borrower in successfully enforcing against
         Guarantor any of its obligations and liabilities hereunder or the terms
         hereof, including, without limitation, reasonable fees and expenses of
         legal counsel.  Guarantor waives notice of acceptance of this Agreement
         and of any obligation to which it applies or may apply under the terms
         hereof, and waives diligence, presentment, demand of payment, notice of
         dishonor or non-payment, protest, notice of protest, of any such
         obligations, suit or taking other action by the Collateral Agent or the
         Borrower against, and giving any notice of default or other notice

                                   2



     to,  or  making any demand on, any party liable thereon (including
Guarantor).

     (b)  Guarantor's obligation under this Agreement is an absolute,
          unconditional, continuing and irrevocable guaranty of payment
          and performance and is in no way conditioned on or contingent
          upon any attempt to enforce in whole or in part NRGG
          Funding's obligations to the Collateral Agent and the
          Borrower under the Equity Commitment Agreement.  If NRGG
          Funding fails to pay or perform any liabilities or
          obligations to the Collateral Agent or the Borrower under
          Section 1 or 2 of the Equity Commitment Agreement as and when
          they are due, Guarantor shall forthwith pay and perform such
          liabilities or obligations, with any such payment to be made
          in immediately available funds.  Each failure by NRGG Funding
          to pay or perform any liabilities or obligations arising
          under Section 1 or 2 of the Equity Commitment Agreement shall
          give rise to a separate cause of action hereunder, and
          separate suits may be brought hereunder as each cause of
          action arises.

     (b)  The Collateral Agent and the Borrower may, at any time and from
          time to time without the consent of or notice to Guarantor, except
          such notice as may be required by applicable Law which cannot be
          waived, without incurring responsibility to Guarantor or impairing
          or releasing the obligations of Guarantor hereunder, upon or without
          any terms or conditions and in whole or in part, (i) exercise or
          refrain from exercising any rights against NRGG Funding or others
          (including Guarantor) or otherwise act or refrain from acting; (ii)
          release any other guarantor from its obligations without obtaining
          the consent of Guarantor and without affecting or impairing the
          obligations of Guarantor hereunder; (iii) settle or compromise any
          obligations hereby guaranteed and/or any obligations incurred
          directly or indirectly in respect thereof or hereof, and may
          subordinate the payment of all or any part thereof to the payment
          of any obligations which may be due to the Collateral Agent, the
          Borrower or others; (iv) sell, exchange, release, surrender,
          realize upon or otherwise deal with in any manner
          or in any order any property by whomsoever pledged or mortgaged to
          secure or howsoever securing the liabilities or obligations hereby
          guaranteed or any liabilities or obligations incurred directly or
          indirectly in respect thereof or hereof and/or any offset there
          against; (v) apply any sums by

                                   3



     whomsoever paid or howsoever realized to any obligations  of  NRGG
Funding  to  the  Collateral Agent or the Borrower regardless  of  what
obligations remain unpaid; (vi) consent to or waive any breach  of,  or
any act, omission or default under, the Equity Commitment Agreement  or
otherwise  amend, modify or supplement the Equity Commitment  Agreement
or  any  of such other instruments or agreements; and/or (vii)  act  or
fail  to  act  in  any manner referred to in this Agreement  which  may
deprive Guarantor of its right, if any, to subrogation or reimbursement
against NRGG Funding or any other Person to recover full indemnity  for
any  payments  made  pursuant to this Agreement  or  of  its  right  of
contribution against any other party.

     (d)  No invalidity, irregularity or unenforceability of the
          obligations hereby guaranteed shall affect, impair or be a
          defense to this Agreement.

     (e)  In the event that, notwithstanding the provisions of Section
          2(b) hereof, this Agreement shall be deemed revocable in
          accordance with applicable Law, then any such revocation
          shall become effective only upon actual receipt by the
          Collateral Agent and the Borrower of written notice of
          revocation signed by Guarantor.  No revocation or termination
          hereof shall affect in any manner rights arising under this
          Agreement with respect to obligations and liabilities
          outstanding on the date of receipt by the Collateral Agent
          and the Borrower of written notice of such revocation or
          termination and the sole effect of any revocation and
          termination hereof shall be to exclude from this Agreement
          obligations and liabilities thereafter arising which are
          unconnected with obligations and liabilities theretofore
          arising or transactions theretofore entered into (Guarantor
          shall remain liable for all obligations incurred hereunder
          prior to such revocation or termination).

3.   Representations and Warranties.  Guarantor makes the
representations and warranties set forth below to the Borrower and to
the Collateral Agent, acting for its own benefit and for the benefit of
the other Secured Parties, which representations and warranties shall
survive the execution and delivery of this Agreement:

     (a)  Guarantor is a corporation duly organized, validly existing
          and in good standing under the laws of the State of Delaware
          and has the corporate power and authority to execute and
          deliver this Agreement and to perform its obligations
          hereunder.

                                   4



     (b)  Guarantor has taken all necessary corporate action to
          authorize its execution and delivery of this Agreement and
          the performance of its obligations hereunder.

     (c)  This Agreement has been duly executed and delivered by
          Guarantor and constitutes the legal, valid and binding
          obligation of Guarantor, enforceable against Guarantor in
          accordance with its terms, subject to applicable bankruptcy,
          insolvency and other similar Laws affecting creditors' rights
          generally and subject to general equitable principles.

     (d)  All Governmental Approvals and actions necessary in
          connection with the execution and delivery by Guarantor of
          this Agreement and the performance of its obligations
          hereunder have been obtained or performed and remain valid
          and in full force and effect.

     (e)  The execution, delivery and performance of this Agreement, the
          compliance by Guarantor with the provisions hereof and the consumma-
          tion of the transactions contemplated hereby, will not (i) conflict
          with or result in a breach or violation of any of the respective char-
          ters or bylaws of Guarantor or any of its subsidiaries or any material
          franchise or license of Guarantor or any of the terms or provisions
          thereof, (ii) constitute a default or cause an acceleration of any
          obligation under, or result in the imposition or creation of (or the
          obligation to create or impose) any Lien with respect to, any bond,
          note, debenture or other evidence of Indebtedness or any indenture,
          mortgage, deed of trust or other agreement or instrument to which
          Guarantor or any of its subsidiaries is a party or by which it or any
          of them is bound, or to which any properties of Guarantor or any of
          its subsidiaries is or may be subject, (iii) contravene any order of
          any court or Governmental Authority or body having jurisdiction over
          Guarantor or any of its subsidiaries or any of their properties or
          (iv) or conflict with any statute, rule or regulation or administra-
          tive or court decree applicable to Guarantor or any of its subsid-
          iaries or any of their respective properties, in the case of
          clauses (ii), (iii) and (iv) which conflict, breach, violation,
          default or contravention, singly or in the aggregate with each other
          conflict, breach, violation, default or contravention, could
          reasonably be expected to result in a Material Adverse Effect.
          As used in this clause (e) and otherwise in this Agree-

                                   5



     ment,  the  term "Material Adverse Effect" shall mean  a  material
adverse  effect  on  either  (A)  the operations,  business,  financial
condition  or  property of Guarantor or any of its  subsidiaries  on  a
consolidated  basis or (B) the ability of Guarantor  to  perform  in  a
timely manner its obligations under this Agreement.

     (f)  There is no legislation, litigation, action, suit, proceeding
          or investigation pending or (to the best of Guarantor's
          knowledge after due inquiry) threatened against Guarantor
          before or by any court, administrative agency, arbitrator or
          Governmental Authority which if adversely determined
          individually or in the aggregate, (i) could reasonably be
          expected to result in a Material Adverse Effect or (ii)
          questions the validity, binding effect or enforceability
          hereof, any action taken or to be taken pursuant hereto or
          any of the transactions contemplated hereby.

     (g)  All quarterly and annual financial statements heretofore
          delivered by or in respect of Guarantor to the Collateral
          Agent, the Agent Bank, the Banks or the Borrower are true,
          correct and complete as of the dates referred to therein, do
          not fail to disclose any material liabilities, whether direct
          or contingent, fairly present the financial condition of
          Guarantor as of the date thereof and are prepared in
          accordance with GAAP.

     (h)  Guarantor possesses all franchises, certificates, licenses,
          permits and other Governmental Approvals necessary for it to
          own its properties, conduct its business and perform its
          obligations under this Agreement.

     (i)  Guarantor is not an "investment company", or a company
          "controlled" by an "investment company", within the meaning
          of the ICA.

     (j)  Guarantor is a "subsidiary company" of a "holding company" as
          those terms are defined in the Public Utility Holding Company
          Act of 1935, as amended ("PUHCA"); however, Guarantor is
          exempt from all provisions of PUHCA by virtue of Section
          3(a)(2) thereof.

                                   6



4.   Covenants:  Guarantor agrees that:

     (a)  Guarantor shall maintain in full force and effect all
          consents of any governmental or other authority that are
          required to be obtained by it with respect to this Agreement
          and will obtain any that may become necessary in the future.

     (b)  Guarantor shall comply in all material respects with all
          applicable Laws and orders to which it may be subject if
          failure so to comply would materially impair its ability to
          perform its obligations under this Agreement.

          (i)  Annual Financial Statements.  Guarantor shall deliver to
               the Collateral Agent and the Borrower, within one
               hundred twenty (120) days after the close of each fiscal
               year of Guarantor, the consolidated and consolidating
               balance sheets of Guarantor and its consolidated
               Affiliates as at the end of such fiscal year and the
               related consolidated and consolidating statements of
               income, retained earnings and cash flows for such fiscal
               year, in each case setting forth comparative figures for
               the preceding fiscal year and certified, in the case of
               the consolidated financial statements, by independent
               certified public accountants of recognized national
               standing in the United States.

          (ii) Notice of Default or Litigation.  Promptly, and in any
               event within two (2) Business Days after an Authorized
               Officer of Guarantor obtains knowledge thereof,
               Guarantor shall give to the Collateral Agent and the
               Borrower notice of the occurrence of any event or of any
               litigation or governmental proceeding pending (a)
               against Guarantor or any of its Affiliates which could
               affect the business, operations, property, assets,
               condition (financial or otherwise) or prospects of
               Guarantor so as to materially and adversely affect the
               ability of Guarantor to perform its obligations
               hereunder or (b) with respect to this Agreement, which
               event or pending proceeding is likely to materially and
               adversely affect the business, operations, property,
               assets, condition (financial or otherwise) or prospects
               of Guarantor and its Affiliates taken as a whole.

                                   7



          (iii)     Other Information.  From time to time, Guarantor
               shall provide to the Collateral Agent and the Borrower
               such other information or documents (financial or
               otherwise) regarding Guarantor as the Collateral Agent
               or the Borrower may reasonably request and as may be
               available to Guarantor without undue cost or effort.

5.   Subrogation.  Guarantor shall not exercise any rights which it may
acquire by way of subrogation under this Agreement, by any payment made
hereunder or otherwise, until all of the liabilities and obligations of
NRGG Funding to the Collateral Agent and the Borrower under the Equity
Commitment Agreement shall have indefeasibly been paid in full in cash
or cash equivalents.  If any amount shall be paid to Guarantor on
account of such subrogation rights at any time when all such
liabilities and obligations shall not have been indefeasibly paid in
full in cash or cash equivalents, such amount shall be held in trust
for the benefit of the Collateral Agent and the Borrower and shall
forthwith be paid to the Collateral Agent or the Borrower, as
applicable, and applied to such liabilities and obligations, whether
matured or unmatured.

6.   Successions or Assignments.

     (a)  This Agreement shall inure to the benefit of the respective
          successors or assigns of the Collateral Agent and the
          Borrower who shall have, to the extent of their interest, the
          rights of the Collateral Agent and the Borrower hereunder.

     (b)  This Agreement is binding upon Guarantor and its successors
          and assigns.  Guarantor is not entitled to assign its
          obligations hereunder to any other Person without the written
          consent of the Collateral Agent and the Borrower, which may
          be granted or withheld in the Collateral Agent's or the
          Borrower's sole discretion (in the case of the Collateral
          Agent, as directed by the Agent Bank, acting in accordance
          with the Credit Agreement), and any purported assignment in
          violation of this provision shall be void.

7.   Waivers.

     (a)  No delay on the part of the Collateral Agent or the Borrower in
          exercising any of its rights (including those hereunder) and no
          partial or single

                                   8



     exercise  thereof  and no action or non-action by  the  Collateral
Agent  or  the Borrower, with or without notice to Guarantor or  anyone
else, shall constitute a waiver of any rights or shall affect or impair
this Agreement.

     (b)  Guarantor agrees that, if the Collateral Agent or the
          Borrower bring any judicial proceedings in relation to any
          such matter, Guarantor will not interpose any counterclaim or
          setoff of any nature.

     (c)  If any amount payable by Guarantor hereunder is not paid as
          and when due, then Guarantor authorizes the Collateral Agent
          and the Borrower to proceed, without prior notice, by right
          of set-off, counterclaim or otherwise, against any assets of
          Guarantor that may at any time be in the possession of the
          Collateral Agent or the Borrower or any branch or office
          thereof, to the full extent of all amounts payable to the
          Collateral Agent and the Borrower hereunder.

     (d)  Guarantor waives any and all notice of the creation, renewal,
          extension or accrual of any of the obligations of NRGG
          Funding under Sections 1 and 2 of the Equity Commitment
          Agreement and notice of or proof of reliance by the
          Collateral Agent or the Borrower upon this Agreement.

     (e)  Guarantor waives diligence, presentment, protest, demand for
          payment and notice of default to or upon NRGG Funding with
          respect to the obligations under Sections 1 and 2 of the
          Equity Commitment Agreement.

8.   Interpretation.  The Section headings in this Agreement are for
the convenience of reference only and shall not affect the meaning or
construction of any provision hereof.

9.   Notices.  All notices in connection with this Agreement shall be
given by notice in writing, hand-delivered or sent by facsimile
transmission, or by certified mail return-receipt requested (airmail,
if overseas), postage prepaid.  All such notices shall be sent to the
appropriate telecopier number or address, as the case may be, set forth
below or to such other number or address as shall have been
subsequently specified by written notice to each other party hereto,
and shall be sent with copies, if any, as indicated below.  All such
notices shall be effective upon receipt.  The addresses for notice
shall be as follows:

                                   9



     (a)  The address of Guarantor is:

          NRG ENERGY, INC.
          1221 Nicollet Mall, Suite 700
          Minneapolis, MN 55403-2445
          Attention:  President
          Telephone No.:  (612) 373-5400
          Telecopier No.:  (612) 373-5430

          With a copy to:

          NRG ENERGY, INC.
          1221 Nicollet Mall, Suite 700
          Minneapolis, MN 55403-2445
          Attention:  General Counsel

     (b)  The address of the Collateral Agent is:

          THE CHASE MANHATTAN BANK
          450 West 33rd Street, 15th Floor
          New York, NY 10001
          Attention:     A. Marsula, Assistant Vice President,
International Project                                       Finance,
Global Trust Services
          Telephone No.:  (212) 946-7557
          Telecopier No.:  (212) 946-8177/8178

     (c)  The address of the Borrower is:

          NRG (MORRIS) COGEN, LLC
          1221 Nicollet Mall, Suite 700
          Minneapolis, MN  55403-2445
          Attention:  President
          Telephone No.:  (612) 373-5400
          Telecopier No.:  (612) 373-5430

                                   10



          With a copy to:

          NRG (MORRIS) COGEN, LLC
          1221 Nicollet Mall, Suite 700
          Minneapolis, MN  55403-2445
          Attention:  General Counsel

10.  Amendments.  Notwithstanding anything contained herein that may be
construed to the contrary, as between Guarantor, the Collateral Agent
and the Borrower, this Agreement may be amended only with the written
consent of the Collateral Agent, the Borrower and Guarantor, with the
Collateral Agent acting as directed by the Agent Bank (acting upon the
instructions of the Required Banks).

11.  Jurisdiction; Governing Law.

     (a)  Any action or proceeding relating in any way to this
          Agreement may be brought and enforced in the courts of the
          State of New York.  Any such process or summons in connection
          with any such action or proceeding may be served by mailing a
          copy thereof by certified or registered mail, or any
          substantially similar form of mail, addressed to the
          applicable party as provided for notices hereunder.  By
          execution and delivery of this Agreement, Guarantor
          irrevocably agrees to designate, appoint and empower CT
          Corporation System, with its offices as of the date hereof at
          1633 Broadway, New York, New York 10019, to receive for an on
          its behalf service of process in the State of New York and
          further irrevocably consents to the service of process
          outside the territorial jurisdiction of said courts by
          mailing copies thereof in accordance with the immediately
          preceding sentence.  Guarantor represents and warrants that
          it has taken, and will continue to take, all actions
          necessary to retain CT Corporation System as its registered
          agent for service of process in the State of New York for the
          term hereof.

     (b)  This Agreement and the rights and obligations of the parties
          hereto shall be governed by and construed in accordance with
          the Laws of the State of New York without reference to
          principles of conflict of laws (other than Section 5-1401 of
          the New York General Obligations Law).

                                   11



12.  Integration of Terms.  This Agreement contains the entire
agreement among the parties hereto relating to the subject matter
hereof and supersedes all oral statements and prior writings with
respect thereto.

13.  Termination; Reinstatement of Guaranty.

     (a)  Subject to the provisions of Section 13(b) hereof, this
          Agreement shall terminate following the payment in full of
          all amounts due hereunder or under Sections 1 and 2 of the
          Equity Commitment Agreement.

     (b)  Notwithstanding the provisions of Section 13(a) hereof, this
          Agreement shall be reinstated if at any time following the
          termination of this Agreement under Section 13(a) hereof, any
          payment or performance by Guarantor under this Agreement or
          NRGG Funding under Section 1 or 2 of the Equity Commitment
          Agreement is rescinded or must otherwise be returned by the
          Collateral Agent, the Borrower or any other Person upon the
          insolvency, bankruptcy, reorganization, dissolution or
          liquidation of NRG Generating or Guarantor and is so
          rescinded or returned to the party or parties making such
          payment or performance, all as though such payment had not
          been made.  Such period of reinstatement shall continue until
          satisfaction of the conditions contained in, and shall
          continue to be subject to, the provisions of this Section 13.

14.  Waiver of Jury Trial.  THE COLLATERAL AGENT (AND THE AGENT BANK
AND THE BANKS AS THIRD PARTY BENEFICIARIES HEREUNDER), THE BORROWER AND
GUARANTOR HEREBY KNOWINGLY, VOLUNTARILY AND INTENTIONALLY WAIVE ANY
RIGHTS THEY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION
BASED HEREON, OR ARISING OUT OF, UNDER OR IN CONNECTION WITH, THIS
AGREEMENT, OR ANY COURSE OF CONDUCT, COURSE OF DEALING, STATEMENTS
(WHETHER VERBAL OR WRITTEN) OR ACTIONS OF THE COLLATERAL AGENT, THE
BORROWER, GUARANTOR OR NRG GENERATING.  THIS PROVISION IS MATERIAL
INDUCEMENT FOR THE COLLATERAL AGENT, THE BORROWER AND GUARANTOR TO
ENTER INTO THIS AGREEMENT.

                                   12



     IN WITNESS WHEREOF, Guarantor has caused this Equity Commitment
Guaranty to be duly executed and delivered as of the day and year first
written above.


                              NRG ENERGY, INC.


                              By:/s/ David H. Peterson
                                   Name: David H. Peterson
                                   Title: President & CEO


Acknowledged and Accepted:

THE CHASE MANHATTAN BANK,
  as Collateral Agent

By: /s/ Annette M. Marsula
      Name: Annette M. Marsula
      Title: Assistant Vice President


NRG (MORRIS) COGEN, LLC

By: /s/ Craig Mataczynski
      Name: Craig Mataczynski
      Title: President