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