Exhibit 2.1

EXECUTION VERSION

THIS PLAN SPONSOR AGREEMENT IS NOT AN OFFER WITH RESPECT TO ANY SECURITIES OR A SOLICITATION OF VOTES WITH RESPECT TO A CHAPTER 11 PLAN OF REORGANIZATION. ANY SUCH OFFER OR SOLICITATION WILL COMPLY WITH ALL APPLICABLE SECURITIES LAWS AND/OR PROVISIONS OF THE BANKRUPTCY CODE. ACCEPTANCES OR REJECTIONS WITH RESPECT TO A CHAPTER 11 PLAN OF REORGANIZATION MAY NOT BE SOLICITED UNTIL A DISCLOSURE STATEMENT HAS BEEN APPROVED BY THE BANKRUPTCY COURT.

PLAN SPONSOR AGREEMENT

by and among

NRG ENERGY, INC.,

EDISON MISSION ENERGY AND CERTAIN OF ITS DEBTOR SUBSIDIARIES,

OFFICIAL COMMITTEE OF UNSECURED CREDITORS OF EDISON MISSION ENERGY AND ITS AFFILIATED DEBTORS,

THE UNDERSIGNED POJO PARTIES,

and

THE UNDERSIGNED SUPPORTING NOTEHOLDERS

dated as of October 18, 2013

NRG intends to file a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer will file with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at the time of filing at www.sec.gov. Alternatively, the company will arrange to send you the prospectus after filing if you request it by calling 609-524-4500 or emailing investor.relations@nrgenergy.com.

PLAN SPONSOR AGREEMENT

This Plan Sponsor Agreement (including all exhibits annexed hereto which are incorporated by reference herein, this “Agreement”) is made and entered into as of October 18, 2013, by and among NRG Energy, Inc. and NRG Energy Holdings Inc. (together, “NRG”), the Debtors (as defined below), the Official Committee of Unsecured Creditors of the Debtors (the “Committee”), each of the undersigned supporting noteholders (each, a “Supporting Noteholder,” and collectively, the “Supporting Noteholders”), and each of the PoJo Parties (as defined in the “PoJo Term Sheet” attached hereto as Exhibit C). Each of NRG, the Debtors, the Committee, the Supporting Noteholders, and each of the PoJo Parties is referred to as a “Party” and collectively as the “Parties.”

WHEREAS, on December 17, 2012 (the “Petition Date”), Edison Mission Energy, a Delaware corporation (“EME”) and certain of its direct and indirect subsidiaries (collectively, the “First-Filed Debtors”) filed voluntary petitions for relief under chapter 11 of title 11 of the United States Code (the “Bankruptcy Code”) in the United States Bankruptcy Court for the Northern District of Illinois (the “Bankruptcy Court”). On May 2, 2013, Edison Mission Finance Co., EME Homer City Generation L.P., and Homer City Property Holdings, Inc. (collectively, and together with Chestnut Ridge Energy Company and Mission Energy Westside Inc., the “Homer City Debtors” and, together with the First-Filed Debtors, the “Debtors”) filed voluntary petitions for relief under chapter 11 of the Bankruptcy Code in the Bankruptcy Court. The Debtors’ bankruptcy cases (the “Chapter 11 Cases”) are jointly administered under the caption In re Edison Mission Energy, Case No. 12-49219 (JPC) (Bankr. N.D. Ill.);

WHEREAS, on January 7, 2013, the United States Trustee appointed the Committee in the Chapter 11 Cases;

WHEREAS, the Supporting Noteholders hold debt securities issued by EME under: (a) that certain Indenture, dated as of June 6, 2006 (as amended, modified, waived, or supplemented, the “2006 Indenture”), providing for the issuance of 7.50% Senior Fixed Rate Notes due 2013 and 7.75% Senior Fixed Rate Notes due 2016 and (b) that certain Indenture, dated as of May 7, 2007 (as amended, modified, waived, or supplemented, the “2007 Indenture,” and with the 2006 Indenture, the “Indentures”), providing for the issuance of 7.00% Senior Fixed Rate Notes due 2017, 7.20% Senior Fixed Rate Notes due 2019, and 7.625% Senior Fixed Rate Notes due 2027 (such notes issued under the Indentures, the “Notes,” and the holders of such Notes, the “Noteholders”), by and between EME and Wells Fargo Bank, N.A., as trustee (in such capacity, the “Indenture Trustee”);

WHEREAS, in August 2000, EME, Midwest Generation, LLC, and the PoJo Parties entered into sale-leaseback transactions with respect to the Powerton electric generating facility and units 7 and 8 of the Joliet electric generating facility, the terms of which are set forth in the PoJo Leases and the other Operative Documents;

WHEREAS, the holders of, or an investment manager or advisor with discretionary authority with respect to (the “PoJo Certificateholders”), greater than sixty-four percent (64%) of currently outstanding 8.56% Series B Pass Through Certificates issued in the original aggregate principal amount of $813,500,000 pursuant to that certain Pass Through Trust Agreement B dated as of August 17, 2000 (the “Pass Through Trust Agreement”), by and among Midwest Generation, LLC and The Bank of New York Mellon, as Successor Pass Through Trustee (the “Pass Through Trustee”) have given direction to the Pass Through Trustee to enter into this Agreement solely in its capacities as the (a) Pass Through Trustee under the Pass Through Trust Agreement and (b) Lease Indenture Trustee under those certain Indentures of Trust and Security Agreements dated as of August 17, 2000, by and among certain of the PoJo Parties;

WHEREAS, NRG seeks to acquire substantially all of the assets of EME, including its ownership interest in all of its direct and indirect subsidiaries other than the Homer City Debtors (collectively, the “Company”), subject to the terms and conditions described in this Agreement and the Asset Purchase Agreement by and between NRG and EME (together with all exhibits, schedules, and attachments thereto, the “Purchase Agreement”) attached hereto as Exhibit A;

WHEREAS, all of the Parties engaged in good faith, arm’s length negotiations regarding the material terms of a restructuring of the Debtors, upon the consummation of which NRG would acquire ownership of EME’s assets (the “Restructuring”), and the Parties now desire to make certain terms binding in accordance with and subject to the terms and conditions set forth in this Agreement, including, as it relates to the Debtors and the Committee, approval by the Bankruptcy Court;

WHEREAS, subject to such approval, the Parties intend to pursue the Restructuring through a joint chapter 11 plan of reorganization in the Chapter 11 Cases (the “Plan”), in accordance with the terms reflected in the term sheet attached hereto as Exhibit B (the “Plan Term Sheet”) and the PoJo Term Sheet and pursuant to the terms and conditions of the Purchase Agreement, which Plan shall be proposed by the Debtors and supported by each of the Parties subject to the terms and conditions of this Agreement; and

WHEREAS, the Parties desire to express to each other their mutual support and commitment in respect of the Restructuring, the Purchase Agreement, and the Plan on the terms and conditions contained in this Agreement.

NOW, THEREFORE, in consideration of the covenants and agreements contained herein, and for other valuable consideration, the receipt and sufficiency of which are hereby acknowledged, each Party, intending to be legally bound hereby, agrees as follows:

1. Definitions. Capitalized terms used but not defined herein shall have the meanings ascribed to them in the Purchase Agreement, the Plan Term Sheet, or the PoJo Term Sheet, as applicable.

2. Interpretation. In this Agreement, unless the context otherwise requires:

a. words importing the singular also include the plural, and references to one gender include all genders;

b. the headings in this Agreement are inserted for convenience only and do not affect the construction of this Agreement and shall not be taken into consideration in its interpretation;

c. the words “hereof,” “herein” and “hereunder” and words of similar import when used in this Agreement shall refer to this Agreement as a whole and not to any particular provision of this Agreement;

d. the words “include,” “includes,” and “including” shall be deemed to be followed by the phrase “without limitation.” The word “or” is not exclusive;

e. all financial statement accounting terms not defined in this Agreement shall have the meanings determined by United States generally accepted accounting principles as in effect on the date of this Agreement;

f. unless otherwise expressly provided in this Agreement, any agreement (including this Agreement), instrument, statute, order, or decree defined or referred to herein means such agreement, instrument, statute, order, or decree as from time to time amended, modified, supplanted, or supplemented, including (in the case of agreements or instruments) by waiver or consent and (in the case of statutes, proclamations, or decrees) by succession of comparable successor statutes, proclamations, or decrees;

g. all references to currency or dollars herein refer to the United States dollars; and

h. references to any governmental entity or any governmental department, commission, board, bureau, agency, regulatory authority, instrumentality, or judicial or administrative body, in any jurisdiction shall include any successor to such entity.

3. Effectiveness; Entire Agreement.

a. This Agreement shall become effective and binding on all Parties other than the Debtors, the Non-Debtor Subsidiaries and the Committee as of the date this agreement is executed by each of the Parties; provided that Supporting Noteholders holding at least forty-five percent (45%) of the aggregate face amount of the Notes execute this Agreement. This Agreement shall become effective and binding on the Debtors, the Non-Debtor Subsidiaries, and the Committee as of the date of entry of the PSA Order.

b. Without limiting the rights and remedies of any Party arising from a breach of this Agreement prior to its valid termination, except as specifically provided to the contrary herein, if this Agreement or the Purchase Agreement is validly terminated pursuant to its terms, then this Agreement shall be null and void and have no further legal effect and none of the Parties shall have any liability or obligation arising under or in connection with this Agreement.

c. This Agreement (including the Purchase Agreement, the Plan Term Sheet, and the PoJo Term Sheet annexed hereto and incorporated herein by reference) constitutes the entire agreement of the Parties with respect to the subject matter hereof and supersedes all prior agreements (oral and written) and all other prior negotiations, including, without limitation, that certain Restructuring Support Agreement, dated October 2, 2013 (the “RSA”) by and between NRG and certain Supporting Noteholders. For the avoidance of doubt, (i) upon the execution of this Agreement, NRG and the Supporting Noteholders shall suspend performance under the RSA, and (ii) upon the entry of the PSA Order, the RSA shall immediately and automatically terminate, and no Party shall have any rights or obligations under the RSA or the Summary Term Sheet, including, without limitation, any confidentiality obligations therein. Upon the execution of this

Agreement, except for the Ancillary Agreements and documents contemplated by the Plan, no Party will enter into any agreement related to the transactions contemplated by this Agreement, the Purchase Agreement, or the Plan Term Sheet, unless agreed by all the Parties.

4. The Plan Sponsor Protections.

a. Upon the Bankruptcy Court’s entry of the PSA Order, the Debtors and the Non-Debtor Subsidiaries agree to be bound by Section 4.6 of the Purchase Agreement and the Break-Up Fee and Expense Reimbursement set forth in Section 7.2(b) of the Purchase Agreement (together, the “Plan Sponsor Protections”). The Break-Up Fee and Expense Reimbursement shall be joint and several liabilities of the Debtors and their estates, subject to the terms and conditions of the Purchase Agreement, and each of the other Parties to this Agreement hereby agrees, consents to and supports such terms, and further acknowledges and stipulates that the Plan Sponsor Protections are in consideration of the real and substantial benefits conferred by NRG upon the bankruptcy estates of the Debtors, and in consideration of the time, expense and risk associated with serving as the plan sponsor.

b. On an after December 6, 2013, the Committee and its professionals shall cease any existing discussions or negotiations with any Persons that may be ongoing with respect to any Acquisition Proposals or any proposal reasonably likely to result in an Acquisition Proposal, and the Committee and its professionals shall not directly or indirectly (A) initiate or knowingly encourage, facilitate, or assist any inquiries or the making of any proposal or offer that constitutes, or may reasonably be expected to lead to, an Acquisition Proposal, (B) engage in, continue, or otherwise participate in any discussions or negotiations regarding any proposal or offer that constitutes, or may reasonably be expected to lead to, an Acquisition Proposal, or (C) otherwise knowingly facilitate any effort or attempt to make an Acquisition Proposal, other than, in each case, to request information from the person making any such Acquisition Proposal or the Debtors for the sole purpose of the Committee informing themselves about the Acquisition Proposal that has been made and the person that made it or to notify any person of the Committee’s obligations hereunder. Nothing contained in this Agreement shall be deemed to prohibit or restrict the Committee or its members from complying with their duties (including duties of candor and other fiduciary duties) to the Bankruptcy Court and to their constituency.

5. Covenants of NRG. Without limiting the respective rights of NRG and EME under Sections 4.6, 7.1, and 7.2 of the Purchase Agreement, for so long as this Agreement has not been validly terminated in accordance with its terms, NRG hereby agrees and covenants to:

a. use reasonable best efforts to obtain the approval by the Bankruptcy Court of (i) the Debtors’ entry into this Agreement and (ii) the Plan Sponsor Protections as soon as reasonably practicable but in any case on or before October 25, 2013;

b. use reasonable best efforts and work in good faith to negotiate, definitively document, and consummate the Restructuring and transactions contemplated hereby, and support entry of orders of the Bankruptcy Court approving the Restructuring, including approval of this Agreement and each of the other Ancillary Agreements, as soon as reasonably practicable;

c. without limiting Parties’ rights under the Plan Term Sheet, use reasonable best efforts to inform each Party, on a current basis, regarding the negotiations and status of the Plan Documents and Ancillary Agreements, including with respect to any terms thereof that affect the rights of each such Party;

d. so long as all material terms and conditions are consistent with this Agreement, not (i) object to or otherwise commence any proceeding opposing any of the terms of this Agreement, the

Ancillary Agreements, or the Disclosure Statement, or (ii) commence any proceeding or prosecute, join in, or otherwise support any action to oppose, object to, or delay entry of the PSA Order, the Disclosure Statement Order, or the solicitation, confirmation, or consummation of the Plan;

e. not take any action that is inconsistent in any material respect with, or is intended to frustrate or impede approval and consummation of transactions described in, this Agreement or the Plan;

f. through and including any valid termination of this Agreement, (1) not directly or indirectly file a chapter 11 plan or support any chapter 11 plan or sale process, or cause any affiliate to file a chapter 11 plan or support any chapter 11 plan or sale process, proposed by any entity other than the Debtors, regardless of any termination of either or both of (A) the Debtors’ exclusive period, under section 1121(b) of the Bankruptcy Code, to file a chapter 11 plan (the “Exclusive Filing Period”) and (B) the Debtors’ exclusive period, under section 1121(c) of the Bankruptcy Code, to solicit votes regarding a chapter 11 plan (the “Exclusive Solicitation Period,” together with the Exclusive Filing Period, the “Exclusive Periods”), and (2) not object to or otherwise oppose any request by the Debtors’ for an extension of the Exclusive Periods (which shall request extensions of the Exclusive Periods through and including the earlier of (x) the latest dates permitted under the Bankruptcy Code and (y) 30 days after any valid termination of this Agreement; provided that, for the avoidance of doubt, nothing herein shall restrict NRG from objecting to the Debtors’ Exclusive Periods or taking any other action it deems appropriate during such 30 days);

g. to the extent any legal or structural impediment arises that would prevent, hinder, or delay the consummation of the transactions contemplated herein, negotiate in good faith appropriate additional or alternative provisions to address any such impediment; provided that the economic outcome for the Parties, the timing of the Closing Date and other material terms of this Agreement are preserved in any such provisions;

h. except as required by law (as determined by outside counsel to NRG) and with reasonable prior written notice to the Supporting Noteholders, not and cause its subsidiaries not to (a) use the name of the Indenture Trustee or any Supporting Noteholder in any press release without such person’s prior written consent or (b) disclose to any person other than legal and financial advisors to NRG or the Debtors the principal amount or percentage of any Notes Claims (as defined herein) or any other securities of the Company or its subsidiaries held by any Supporting Noteholder;

i. comply with all of its obligations under this Agreement and the exhibits annexed hereto (which exhibits are incorporated herein by reference) unless compliance is waived in writing by each of the other Parties; and

j. duly execute and comply with all of its obligations under the Purchase Agreement, which shall be binding upon NRG as of the date of the Purchase Agreement.

6. Covenants of the Debtors. Without limiting the respective rights of NRG and EME under Sections 4.6, 7.1, and 7.2 of the Purchase Agreement, for so long as this Agreement has not been validly terminated in accordance with its terms, the Debtors hereby agree and covenant to:

b. use reasonable best efforts and work in good faith to negotiate, definitively document, and consummate the Restructuring and transactions contemplated hereby, and support entry of orders

of the Bankruptcy Court approving the Restructuring, including approval of this Agreement and each of the other Ancillary Agreements, as soon as reasonably practicable;

c. not settle or otherwise compromise any EIX Litigation Claims against any EIX Litigation Party unless the following procedure has been completed: the Debtors shall invite Noteholders to become restricted in order to consider such proposed settlement; the Debtors shall use reasonable best efforts to agree to a confidentiality agreement with appropriate cleansing mechanisms with counsel to the Supporting Noteholders (which cleansing mechanism shall not result in dissemination of information that might be detrimental to the value of such litigation), such restriction period to last no more than seven (7) calendar days; the Debtors shall present any such proposed settlement or compromise to restricted Noteholders holding at least twenty-five percent (25%) of the aggregate face amount of the Notes (the “Restricted Noteholder Participants”) with the advisors to the Supporting Noteholders and the Committee (including the Committee members) present in any such presentation and discussion; if Noteholders holding more than fifty percent (50%) of the aggregate face amount of the Notes vote to reject such proposed settlement or compromise, then the Debtors shall not proceed with such proposed settlement, but if no such vote against the proposed settlement occurs, then the Debtors may proceed to seek approval of such settlement by appropriate motion, and any party may oppose such motion; provided that, if such approval is sought following the commencement of a solicitation of votes on the plan, such solicitation shall be supplemented by notice of such proposed settlement, and the relevant objection and voting deadlines shall be extended by the number of days that such supplemental notice follows the start of the initial solicitation;

d. without limiting Parties’ rights under the Plan Term Sheet, use reasonable best efforts to inform each Party, on a current basis, regarding the negotiations and status of the Plan Documents and Ancillary Agreements, including with respect to any terms thereof that affect the rights of each such Party;

e. not take any action that is inconsistent in any material respect with, or is intended to frustrate or impede approval and consummation of transactions described in, this Agreement or the Ancillary Agreements;

f. support, observe, and abide by the Plan Sponsor Protections;

h. except as required by law (as determined by outside counsel to the Debtors) and with reasonable prior written notice to the Supporting Noteholders, not and cause its subsidiaries not to (a) use the name of the Indenture Trustee or any Supporting Noteholder in any press release without such person’s prior written consent or (b) disclose to any person other than legal and financial advisors to NRG or the Debtors the principal amount or percentage of any Notes Claims (as defined herein) or any other securities of the Company or its subsidiaries held by any Supporting Noteholder; provided that the Debtors shall be permitted to disclose at any time the aggregate principal amount of and aggregate percentage of the Notes Claims held by the Supporting Noteholders;

j. duly execute and comply with all of their obligations under the Purchase Agreement, which shall be binding upon the Debtors and the Non-Debtor Subsidiaries upon entry of the PSA Order.

7. Covenants of the Committee. For so long as this Agreement has not been validly terminated, the Committee hereby agrees and covenants to:

c. recommend in a written letter included with ballots to general unsecured creditors of the Debtors, so long as their votes have been properly solicited pursuant to sections 1125 and 1126 of the Bankruptcy Code with respect to the Plan, including receipt of a Disclosure Statement and solicitation materials that have been approved by the Bankruptcy Court, that they: (i) vote all their claims to accept the Plan following commencement of the solicitation of acceptances of the Plan in accordance with sections 1125 and 1126 of the Bankruptcy Code and (ii) not change or withdraw such vote (or cause or direct such vote to be changed or withdrawn); provided, however, that recommendation may be immediately revoked and withdrawn upon valid termination of this Agreement pursuant to the terms hereof;

e. so long as all material terms and conditions are consistent with this Agreement, not (i) object to or otherwise commence any proceeding opposing any of the terms of this Agreement, the Ancillary Agreements, or the Disclosure Statement, or (ii) commence any proceeding or prosecute, join in, or otherwise support any action to oppose, object to, or delay entry of the PSA Order, the Disclosure Statement Order, or the solicitation, confirmation, or consummation of the Plan;

f. not take any action that is inconsistent in any material respect with, or is intended to frustrate or impede approval and consummation of transactions described in, this Agreement or the Ancillary Agreements;

g. through and including any valid termination of this Agreement, (1) not directly or indirectly file a chapter 11 plan or support any chapter 11 plan or sale process, or cause any affiliate to file a chapter 11 plan or support any chapter 11 plan or sale process, proposed by any entity other than the Debtors, regardless of any termination of either or both of the Exclusive Periods and (2) not object to or otherwise oppose any request by the Debtors’ for an extension of the Exclusive Periods (which shall request extensions of the Exclusive Periods through and including the earlier of (x) the latest dates permitted under the Bankruptcy Code and (y) 30 days after any valid termination of this Agreement; provided that, for the avoidance of doubt, nothing herein shall restrict the Committee from objecting to the Debtors’ Exclusive Periods or taking any other action it deems appropriate during such 30 days);

h. support the Plan Sponsor Protections;

i. to the extent any legal or structural impediment arises that would prevent, hinder, or delay the consummation of the transactions contemplated herein, negotiate in good faith appropriate

additional or alternative provisions to address any such impediment; provided that the economic outcome for the Parties, the timing of the Closing Date and other material terms of this Agreement are preserved in any such provisions; and

j. comply with all of its obligations under this Agreement and the exhibits annexed hereto (which exhibits are incorporated herein by reference) unless compliance is waived in writing by each of the other Parties.

8. Covenants of the Supporting Noteholders. For so long as this Agreement has not been validly terminated, each Supporting Noteholder (solely on its own behalf and not on behalf of any other Noteholder) hereto agrees and covenants severally (but not jointly) to:

b. use reasonable best efforts and work in good faith to negotiate, definitively document, and consummate the Restructuring and transactions contemplated hereby, and support entry of orders of the Bankruptcy Court approving the Restructuring, including approval of this Agreement, the Plan, a Disclosure Statement, and the Plan Sponsor Protections, as soon as reasonably practicable;

c. satisfy their obligations under Section 6.c hereof;

d. not, directly or indirectly (i) seek, solicit, support, encourage, or vote any claims for, consent to, encourage, or participate in any discussions regarding the negotiation or formulation of any Acquisition Proposal or of any restructuring for EME or any of the Acquired Companies that is in any way inconsistent with this Agreement or the Purchase Agreement in any material respect; (ii) take any other action that would delay or obstruct the approval of the transactions contemplated by this Agreement in any material respect; or (iii) otherwise support any plan or sale process that is inconsistent with this Agreement (collectively, the “Non-Solicitation Covenant”);

e. without limiting Parties’ rights under the Plan Term Sheet, use reasonable best efforts to inform each Party, on a current basis, regarding the negotiations and status of the Plan Documents and Ancillary Agreements, including with respect to any terms thereof that affect the rights of each such Party;

f. to the extent any legal or structural impediment arises that would prevent, hinder, or delay the consummation of the transactions contemplated herein, negotiate in good faith appropriate additional or alternative provisions to address any such impediment; provided that the economic outcome for the Parties, the timing of the Closing Date and other material terms of this Agreement are preserved in any such provisions;

g. support the Plan Sponsor Protections;

h. so long as all material terms and conditions are consistent with this Agreement, not (i) object to or otherwise commence any proceeding opposing any of the terms of this Agreement, the Ancillary Agreements, or the Disclosure Statement, or (ii) commence any proceeding or prosecute, join in, or otherwise support any action to oppose, object to, or delay entry of the PSA Order, the Disclosure Statement Order, or the solicitation, confirmation, or consummation of the Plan;

i. not take any action that is inconsistent in any material respect with, or is intended to frustrate or impede approval and consummation of transactions described in, this Agreement or the Ancillary Agreements;

j. through and including any valid termination of this Agreement, (1) not directly or indirectly file a chapter 11 plan or support any chapter 11 plan or sale process, or cause any affiliate to file a chapter 11 plan or support any chapter 11 plan or sale process, proposed by any entity other than the Debtors, regardless of any termination of either or both of the Exclusive Periods and (2) not object to or otherwise oppose any request by the Debtors’ for an extension of the Exclusive Periods (which shall request extensions of the Exclusive Periods through and including the earlier of (x) the latest dates permitted under the Bankruptcy Code and (y) 30 days after any valid termination of this Agreement; provided that, for the avoidance of doubt, nothing herein shall restrict the Supporting Noteholders from objecting to the Debtors’ Exclusive Periods or taking any other action it deems appropriate or taking any other action it deems appropriate during such 30 days); and

k. comply with all of its obligations under this Agreement and the exhibits annexed hereto (which exhibits are incorporated herein by reference) unless compliance is waived in writing by each of the other Parties.

9. Covenants of the PoJo Parties. For so long as this Agreement has not been validly terminated, each PoJo Party hereto agrees and covenants severally (but not jointly) to:

b. use reasonable best efforts and work in good faith to negotiate, definitively document, and consummate the Restructuring and transactions contemplated hereby, and support entry of orders of the Bankruptcy Court approving the Restructuring, including approval of this Agreement, the Plan, a Disclosure Statement, and the Plan Sponsor Protections, as soon as reasonably practicable;

c. observe and abide by the Non-Solicitation Covenant;

d. without limiting Parties’ rights under the Plan Term Sheet or the PoJo Term Sheet, use reasonable best efforts to inform each Party, on a current basis, regarding the negotiations and status of the Plan Documents and Ancillary Agreements, including with respect to any terms thereof that affect the rights of each such Party;

e. to the extent any legal or structural impediment arises that would prevent, hinder, or delay the consummation of the transactions contemplated herein, negotiate in good faith appropriate additional or alternative provisions to address any such impediment; provided that the economic outcome for the Parties, the timing of the Closing Date and other material terms of this Agreement are preserved in any such provisions;

f. support the Plan Sponsor Protections;

g. so long as all material terms and conditions are consistent with this Agreement, not (i) object to or otherwise commence any proceeding opposing any of the terms of this Agreement, the Ancillary Agreements, or the Disclosure Statement, or (ii) commence any proceeding or prosecute, join in, or otherwise support any action to oppose, object to, or delay entry of the PSA Order, the Disclosure Statement Order, or the solicitation, confirmation, or consummation of the Plan;

h. not take any action that is inconsistent in any material respect with, or is intended to frustrate or impede approval and consummation of transactions described in, this Agreement, the Ancillary Agreements, or the Plan, so long as the terms thereof are not materially inconsistent with the PoJo Parties’ treatment under this Agreement, the Plan Term Sheet, and the PoJo Term Sheet;

i. through and including any valid termination of this Agreement, (1) not directly or indirectly file a chapter 11 plan or support any chapter 11 plan or sale process, or cause any affiliate to file a chapter 11 plan or support any chapter 11 plan or sale process, proposed by any entity other than the Debtors, regardless of any termination of either or both of the Exclusive Periods and (2) not object to or otherwise oppose any request by the Debtors’ for an extension of the Exclusive Periods (which shall request extensions of the Exclusive Periods through and including the earlier of (x) the latest dates permitted under the Bankruptcy Code and (y) 30 days after any valid termination of this Agreement; provided that, for the avoidance of doubt, nothing herein shall restrict the PoJo Parties from objecting to the Debtors’ Exclusive Periods or taking any other action it deems appropriate during such 30 days);

j. not sell, assign, transfer, or otherwise dispose of any of the PoJo Leases and Operative Documents to which it is a party or in which it has any legal or equitable interest, other than as may be necessary to effectuate the PoJo Lease Modifications; and

10. Preservation of Participation Rights. For the avoidance of doubt, nothing in this Agreement shall limit any rights of any Party, subject to applicable law, the Plan, and the Plan Term Sheet, to (a) appear and participate as a party in interest in any contested matter to be adjudicated in the Bankruptcy Cases; (b) initiate, prosecute, appear, or participate as a party in interest in, the EIX Litigation or any adversary proceeding in the Bankruptcy Cases, so long as, in the case of each of (a) or (b), such appearance, initiation, prosecution or participation and the positions advocated in connection therewith are not materially inconsistent with this Agreement or the Plan Term Sheet; (c) object to any motion to approve or confirm the Plan, the Disclosure Statement or to any other plan of reorganization, sale transaction, or any motions related thereto, to the extent that the terms of any such motions, documents, or other agreements are materially inconsistent with this Agreement or the Plan Term Sheet and such inconsistencies were not approved in writing by each other Party; or (d) file a copy of this Agreement (including all exhibits hereto) or a description of the matters herein with the Bankruptcy Court.

11. Representations and Warranties by NRG. NRG represents and warrants to each of the other Parties that, as of the date hereof:

a. it has all requisite power and authority to enter into this Agreement and to carry out the transactions contemplated by, and perform its obligations under, this Agreement and the other Ancillary Agreements, and the execution, delivery, and performance by it of this Agreement and the Ancillary Agreements will not (i) contravene any applicable provision of any law, statute, rule or regulation, or any order writ, injunction, or decree of any court or governmental instrumentality or violate any provision of its organizational documents or (ii) conflict with, or result in a breach or constitute (with due notice or lapse of time or both) a default under any material contractual obligations to which it or any of its subsidiaries is a party;

b. the execution and delivery of this Agreement and the performance of its obligations hereunder have been duly authorized by all necessary action on its part;

c. this Agreement is the legally valid and binding obligation of NRG and is enforceable against NRG in accordance with its terms, except as enforcement may be limited by bankruptcy, insolvency, reorganization, moratorium, or other similar laws relating to or limiting creditors’ rights generally or by equitable principles relating to enforceability; and

except as expressly provided in this Agreement, the execution, delivery, and performance by it of this Agreement do not and shall not require any registration or filing with, consent or approval of, or notice to, or other action to, with or by, any federal, state, or other governmental authority or regulatory body other than, solely with respect to its performance under the Ancillary Agreements, the Bankruptcy Court, the SEC, FERC, the Public Utility Commission of Texas, and in relation to the HSR Act (as applicable).

12. Representations and Warranties by the Debtors. Each of the Debtors represents and warrants to each of the other Parties that, as of the date of entry of the PSA Order:

a. it has all requisite power and authority to enter into this Agreement and to carry out the transactions contemplated by, and perform its obligations under, this Agreement and the other Ancillary Agreements, and the execution, delivery, and performance by it of this Agreement will not (i) contravene any applicable provision of any law, statute, rule or regulation, or any order writ, injunction, or decree of any court or governmental instrumentality or violate any provision of its organizational documents or (ii) conflict with, or result in a breach or constitute (with due notice or lapse of time or both) a default under any material contractual obligations to which it or any of its subsidiaries is a party;

b. the execution and delivery of this Agreement and the performance of its obligations hereunder have been duly authorized by all necessary action on its part;

c. this Agreement is the legally valid and binding obligation of the Debtors and is enforceable against the Debtors in accordance with its terms;

d. it has no knowledge of the occurrence of any event that, due to any fiduciary or similar duty to any other person, would prevent it from taking any action required of it under this Agreement; and

e. except as expressly provided in this Agreement, the execution, delivery, and performance by it of this Agreement do not and shall not require any registration or filing with, consent or approval of, or notice to, or other action to, with or by, any federal, state, or other governmental authority or regulatory body other than, solely with respect to its performance under the Ancillary Agreements, the Bankruptcy Court, the SEC, FERC, and in relation to the HSR Act (as applicable).

13. Representations and Warranties by the Committee. The Committee represents and warrants to each of the other Parties that, as of the date hereof:

a. the execution and delivery of this Agreement and the performance of its obligations hereunder have been duly authorized by all necessary action on its part;

b. this Agreement is the legally valid and binding obligation of the Committee and is enforceable against the Committee in accordance with its terms; and

c. it has no knowledge of the occurrence of any event that, due to any fiduciary or similar duty to any other person, would prevent it from taking any action required of it under this Agreement.

14. Representations and Warranties by the Supporting Noteholders. Each Supporting Noteholder (solely on its own behalf and not on behalf of any other Noteholder) represents and warrants on a several (but not joint) basis to each of the other Parties, as of the date hereof that:

a. such Supporting Noteholder (A) either (1) is the sole beneficial owner of the principal amount of Notes set forth in a separate letter to NRG and the Debtors delivered by counsel to the Supporting Noteholders simultaneously with this Agreement, or (2) has sole investment or

voting discretion with respect to the principal amount of claims under the Notes (any such claims, the “Notes Claims”) set forth in such letter and has the power and authority to bind the beneficial owner(s) of such Notes Claims to the terms of this Agreement, and (B) has full power and authority to act on behalf of, vote, and consent to matters concerning such Notes Claims and to dispose of, exchange, assign, and transfer such Notes Claims, including the power and authority to execute and deliver this Agreement and to perform its obligations hereunder;

b. such Supporting Noteholder has made no assignment, sale, participation, grant, conveyance, pledge, or other transfer of, and has not entered into any other agreement to assign, sell, use, participate, grant, convey, pledge, or otherwise transfer, in whole or in part, any portion of its right, title, or interests in any Notes Claims that are subject to this Agreement that conflict with the representations and warranties of such Supporting Noteholder herein or would render such Supporting Noteholder otherwise unable to comply with this Agreement and perform its obligations hereunder;

c. this Agreement constitutes the legally valid and binding obligation of each such Supporting Noteholder thereto, as applicable, enforceable against it in accordance with its terms, except as enforcement may be limited by bankruptcy, insolvency, reorganization, moratorium, or other similar laws relating to or limiting creditors’ rights generally or by equitable principles relating to enforceability;

d. such Supporting Noteholder is an “accredited investor” (as defined by Rule 501 of the Securities Act of 1933, as amended); and

e. such Supporting Noteholder does not have actual knowledge of the occurrence of any event that, due to any fiduciary or similar duty to any other person, would prevent it from taking any action required of it under this Agreement.

15. Representations and Warranties by the PoJo Parties. Each of the PoJo Parties (solely on its own behalf and not on behalf of any other PoJo Party) represents and warrants on a several (but not joint) basis to each of the other Parties, as of the date hereof that:

a. it has all requisite power and authority to enter into this Agreement and to carry out the transactions contemplated by, and perform its obligations under, this Agreement and the other Ancillary Agreements, and the execution, delivery, and performance by it of this Agreement will not (i) contravene any applicable provision of any law, statute, rule or regulation, or any order writ, injunction, or decree of any court or governmental instrumentality or violate any provision of its organizational documents or (ii) conflict with, or result in a breach or constitute (with due notice or lapse of time or both) a default under any material contractual obligations to which it or any of its subsidiaries is a party;

b. the Pass Through Trustee has received direction from the PoJo Certificateholders to enter into this Agreement;

c. this Agreement is the legally valid and binding obligation of each PoJo Party and is enforceable against it in accordance with its terms, except as enforcement may be limited by bankruptcy, insolvency, reorganization, moratorium, or other similar laws relating to or limiting creditors’ rights generally or by equitable principles relating to enforceability; and

d. such PoJo Party does not have actual knowledge of the occurrence of any event that, due to any fiduciary or similar duty to any other person, would prevent it from taking any action required of it under this Agreement.

16. Transfer Restrictions.

Each Supporting Noteholder and any other Party to this Agreement holding Notes agrees that, so long as this Agreement has not been validly terminated in accordance with its terms, it shall not directly or indirectly (a) grant any proxies to any person in connection with its Notes Claims, or other claims against or interests in any Debtor, to vote on the Plan or any other plan in the Bankruptcy Cases or (b) sell, loan, issue, pledge, hypothecate, assign, transfer, or otherwise dispose of or grant, issue, or sell any option, right to acquire, voting, participation, or other interest in any Notes Claims or other claims or interests (including, for the avoidance of doubt, any claims or interests on behalf of any equity interests in any of the Debtors), in whole or in part, any Notes Claim, or any option thereon or any right or interest therein (each of (a) and (b), a “Transfer”), unless (x) the transferee is a Party to this Agreement or (y) if the transferee is not a Party to this Agreement prior to the effectiveness of the Transfer, such transferee delivers to the other Parties an executed signature page for, and agrees to be bound by, this Agreement, in which event the transferee shall be deemed to be a Supporting Noteholder hereunder solely with respect to the Notes Claims purchased from a Supporting Noteholder (the “Purchased Notes Claims”) and shall be subject to all obligations and covenants of the Supporting Noteholders hereunder, and the transferor shall be deemed to relinquish its rights (and be released from its obligations) under this Agreement to the extent of such Purchased Notes Claims. Each Supporting Noteholder agrees that any Transfer or purported Transfer that does not comply with this Agreement shall be deemed void ab initio and of no effect. For the avoidance of doubt, this Agreement shall in no way be construed to preclude any holder of Notes Claims from acquiring additional Notes or Notes Claims or any other claims against or interests in any of the Debtors; provided, that any additional Notes or Notes Claims or any other claims against or interests in any of the Debtors acquired shall, upon acquisition, automatically be deemed to be subject to all the terms of this Agreement. For the avoidance of doubt, the Parties agree that credit default swaps shall not be deemed or construed to be claims or interests in the Debtors.

Notwithstanding anything herein to the contrary (a) a Supporting Noteholder may Transfer or participate any right, title, or interest in Notes Claims to an entity that is acting in its capacity as a Qualified Marketmaker without the requirement that the Qualified Marketmaker be or become a Supporting Noteholder only if such Qualified Marketmaker has purchased such Notes Claims with a view to immediate resale of such Notes Claims to a transferee that has executed and delivered an executed signature page for this Agreement as set forth in the preceding paragraph, and (b) to the extent that a Supporting Noteholder is acting in its capacity as a Qualified Marketmaker, it may Transfer or participate any right, title, or interest in any Notes that the Qualified Marketmaker acquires from a holder of the Notes who is not a Supporting Noteholder without the requirement that the transferee be or become a Supporting Noteholder. For avoidance of doubt, a Qualified Marketmaker may purchase, transfer, or participate any claims against or interests in the Debtors other than Notes Claims without any requirement that the transferee be or become subject to this Agreement.

For purposes of this Agreement, “Qualified Marketmaker” means an entity that (a) holds itself out to the market as standing ready in the ordinary course of its business to purchase from customers and sell to customers claims against EME and its affiliates (including debt securities, the Notes, or other debt) or enter with customers into long and short positions in claims against EME and its affiliates (including debt securities, the Notes, or other debt), in its capacity as a dealer or market maker in such claims against EME and its affiliates and (b) is in fact regularly

in the business of making a market in claims against issuers or borrowers (including debt securities or other debt).

17. Registration of Securities. NRG shall file a registration statement on Form S-1 with the SEC under the Securities Act registering the offer and sale of the stock consideration and its issuance and distribution pursuant to the Plan (the “Registration Statement”) on or before November 1, 2013 and shall use reasonable best efforts and work in good faith to cause the Registration Statement to become effective on or before the Closing Date. NRG shall prepare and file with the SEC such amendments and supplements to the Registration Statement and the prospectus used in connection therewith as may be necessary to keep the Registration Statement effective and to comply with the provisions of the Securities Act with respect to the offer and sale of the stock consideration by NRG for a period of thirty days following the Closing Date. The Registration Statement (and all amendments and supplements thereto and the prospectus used in connection therewith) and the offer and sale of the stock consideration shall comply in all material respects with the requirements of applicable securities laws. The Registration Statement (and all amendments and supplements thereto and the prospectus used in connection therewith) shall not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading. The other Parties and their respective counsel shall be given a reasonable opportunity to review and comment on the Registration Statement (and all amendments and supplements thereto and the prospectus used in connection therewith), and NRG shall not and shall cause its respective subsidiaries to not use the name of the Indenture Trustee, the members of the Committee, any Supporting Noteholder, or any of the PoJo Parties in the Registration Statement or any amendment or supplement thereto without such person’s prior written consent, which consent shall not be unreasonably withheld. NRG shall provide the other Parties and their respective counsel with any comments or other communications, whether written or oral, NRG or their counsel may receive from the SEC or its staff with respect to the Registration Statement (or any amendments or supplements thereto or the prospectus used in connection therewith) or the offer and sale of the stock consideration promptly after the receipt of such comments or other communications.

18. Survival. The foregoing representations and warranties of the Parties shall not survive the Closing Date. After the Closing Date, there will be no liability for breach of any covenants contained in this Agreement that were to be performed prior to the Closing Date. Notwithstanding anything herein to the contrary, the rights and obligations of NRG and the Debtors under the Purchase Agreement shall survive any termination of this Agreement, in accordance with the terms of the Purchase Agreement.

19. Supporting Noteholder Professional Fees. The estate of EME shall pay the fees and expenses of the professional advisors to the Supporting Noteholders (Ropes & Gray LLP, Houlihan Lokey Capital, Inc. and regulatory counsel Schiff Hardin LLP) on a current basis, with a catch-up for all invoiced fees and expenses on the date of the entry of the PSA Order and payment of all accrued and unpaid fees and expenses on the Plan Effective Date. This payment obligation also shall be incorporated as a term and condition of the Plan.

20. Mutual Termination. This Agreement shall terminate, and all obligations of the Parties hereunder shall immediately terminate and be of no further force and effect, at 11:59 p.m. prevailing Eastern Time, on the date that is two (2) Business Days from the date on which the

respective counsel to each other Party receive written notice from any other Party of the occurrence of any of the events listed below (a “Mutual Termination Event”), unless such Mutual Termination Event is waived by the terminating Party:

a. a material breach of this Agreement or (solely with respect to the parties to the Purchase Agreement) the Purchase Agreement by any Party that has not been cured within twenty Business Days of delivery of written notice of such breach; provided, however, that any alleged breach or default shall be deemed waived if no notice of such breach or default is delivered within fifteen calendar days of the later of its alleged occurrence or the date the terminating party becomes aware thereof;

b. upon any valid termination of the Purchase Agreement by NRG or EME; or

c. NRG, the Debtors, the Committee, the Supporting Noteholders, and the PoJo Parties mutually agree in writing to terminate this Agreement.

provided that no notice of termination from a Party under this Section 20 shall be valid or enforceable if the only Mutual Termination Event is another Party’s suspension of performance under this Agreement due to such first Party’s breach of this Agreement.

21. Termination Right of the Debtors. The Debtors, with the consent of the Committee, may terminate this Plan Sponsor Agreement (but not the Purchase Agreement) on or after November 6, 2013 if, prior to such date, Supporting Noteholders holding at least sixty-six and two-thirds percent (66 2/3%) of the aggregate face amount of the Notes have not executed this Agreement.

22. Termination Rights of the Committee. Unless waived by the Committee, this Agreement shall terminate, and all obligations of the Parties hereunder shall immediately terminate and be of no further force and effect, at 11:59 p.m. prevailing Eastern Time, on the date that is two (2) Business Days from the date on which the respective counsel to each other Party receive written notice from counsel to the Committee of the occurrence of any of the events listed below (each, a “Committee Termination Event”), unless the Committee Termination Event is waived by the Committee:

a. Subject to Section 4.b hereof, at any time prior to entry of the Confirmation Order, the Committee concludes that an Acquisition Proposal, in the Committee’s good-faith judgment, after consultation with its advisors, and taking into consideration all relevant factors, including, among other things, all of the terms, conditions, impact, and all legal, financial, regulatory, and other aspects of such Acquisition Proposal and the Purchase Agreement, the litigation, the assets, and the liabilities proposed to be purchased and assumed or excluded, the identity and financial wherewithal of the third party(ies) making the Acquisition Proposal, and breakup fee and expense reimbursement provisions, (i) is reasonably likely to be consummated in accordance with its terms and (ii) if consummated, would result in a transaction or series of transactions more favorable to the Committee’s constituency than the transactions contemplated by the Purchase Agreement (after taking into account the expected timing and risk and likelihood of consummation);

b. the Purchase Agreement has been modified, amended, or supplemented in a manner that is inconsistent with this Agreement, including any modification, amendment, or supplement which materially changes the anticipated recoveries to unsecured creditors;

c. the Bankruptcy Court has not entered the PSA Order on or before November 7, 2013;

d. EME has not filed a motion seeking entry of the Confirmation Order and the Disclosure Statement Order on or before November 15, 2013;

e. the Bankruptcy Court has not entered the Disclosure Statement Order on or before December 19, 2013;

f. the Bankruptcy Court has not entered the Confirmation Order on or before March 31, 2014; and

g. the Closing Date has not occurred on or before July 31, 2014.

provided that no notice of termination from counsel to the Committee under this Section 22 shall be valid or enforceable if the only Committee Termination Event is another Party’s suspension of performance under this Agreement due to the Committee’s breach of this Agreement.

23. Termination Rights of the Supporting Noteholders. This Agreement shall terminate, and all obligations of the Parties hereunder shall immediately terminate and be of no further force and effect, at 11:59 p.m. prevailing Eastern Time, on the date that is two (2) Business Days from the date on which the respective counsel to each other Party receive written notice from counsel to the Supporting Noteholders of the occurrence of any of the events listed below (each, a “Supporting Noteholder Termination Event”), unless the Supporting Noteholder Termination Event is waived by Supporting Noteholders representing at least 75 percent of the outstanding principal amount of Notes held by all Supporting Noteholders that have executed this Agreement (the “Required Supporting Noteholders”):

a. the Purchase Agreement has been modified, amended, or supplemented in a manner that is inconsistent with this Agreement;

b. the Bankruptcy Court has not entered the PSA Order on or before November 7, 2013;

c. EME has not filed a motion seeking entry of the Confirmation Order and the Disclosure Statement Order on or before November 15, 2013;

d. the Bankruptcy Court has not entered the Disclosure Statement Order on or before December 19, 2013;

e. the Bankruptcy Court has not entered the Confirmation Order on or before March 31, 2014;

f. the Closing Date has not occurred on or before July 31, 2014;

g. any of the Chapter 11 Cases is dismissed or converted to a case under chapter 7 of the Bankruptcy Code; or

h. the Debtors file a plan that is materially inconsistent with the Plan Term Sheet.

provided that no notice of termination from counsel to the Supporting Noteholders under this Section 23 shall be valid or enforceable if the only Supporting Noteholder Termination Event is another Party’s suspension of performance under this Agreement due to the Supporting Noteholders’ breach of this Agreement.

24. Termination Rights of the PoJo Parties. This Agreement shall terminate, and all obligations of the Parties hereunder shall immediately terminate and be of no further force and effect, at 11:59 p.m. prevailing Eastern Time, on the date that is two (2) Business Days from the date on which the respective counsel to each other Party receive written notice from any of the PoJo Parties of the occurrence of any of the events listed below (a “PoJo Party Termination Event”), unless such PoJo Party Termination Event is waived by the PoJo Party providing such notice:

a. the Debtors file a plan that is materially inconsistent with the PoJo Term Sheet or (solely with respect to any terms thereof that affect the rights of the PoJo Parties) the Plan Term Sheet;

b. the Closing Date has not occurred on or before July 31, 2014; or

c. the date by which MWG must assume or reject the PoJo Leases expires without further extension and without the PoJo Leases having been assumed or rejected.

provided that no notice of termination from a PoJo Party under this Section 24 shall be valid or enforceable if the only PoJo Party Termination Event is another Party’s suspension of performance under this Agreement due to any PoJo Party’s breach of this Agreement.

25. Termination Cause for Resolicitation. If this Plan Sponsor Agreement is validly terminated by the Committee or the Supporting Noteholders after approval of the Disclosure Statement, such termination shall require that votes in favor of the Plan be resolicited.

26. Remedies Under this Agreement. Without limiting the rights, remedies, or obligations of EME and NRG with respect to monetary damages to the extent provided in the Purchase Agreement, no Party shall be liable to any other Party for money damages of any kind for a breach of this Plan Sponsor Agreement, whether direct, special, indirect, consequential, incidental, or punitive. Without limiting the rights, remedies, or obligations of EME and NRG with respect to monetary damages to the extent provided in the Purchase Agreement, each non-breaching Party shall be entitled to specific performance of this Plan Sponsor Agreement and injunctive or other equitable relief as the sole remedy for any breach of this Plan Sponsor Agreement, without having to establish the inadequacy of damages as a remedy or any requirement to post a bond.

27. Counterparts. This Agreement and any amendments, waivers, consents, or supplements hereto or in connection herewith may be executed in multiple counterparts (including by means of telecopied or electronically transmitted signature pages), all of which taken together shall constitute one and the same Agreement.

28. No Solicitation. Notwithstanding anything to the contrary, this Agreement is not and shall not be deemed to be (a) a solicitation of consents to the Plan or any chapter 11 plan or (b) an offer for the issuance, purchase, sale exchange, hypothecation, or other transfer of securities or a solicitation of an offer to purchase or otherwise acquire securities for purposes of the Securities Act of 1933 and the Securities Exchange Act of 1934, each as amended. The acceptance of votes from holders of claims and interests, as applicable, will not be solicited until such holders have received the Disclosure Statement and related ballot, as approved by the Bankruptcy Court.

29. Time is of the Essence. The Parties acknowledge and agree that time is of the essence, and that they must each use best efforts to effectuate and consummate the Restructuring as soon as reasonably practicable.

30. Third Party Beneficiaries. Each of the Supporting Noteholders, the PoJo Parties, and the Committee shall be intended third party beneficiaries of the Purchase Agreement, and shall have the right to enforce the terms of the Purchase Agreement and this Agreement against the parties to the Purchase Agreement.

31. Relationship Among the Parties. Nothing herein shall be deemed or construed to create a partnership, joint venture, or other association between or among any of the Parties.

Each Party agrees and understands that neither this Agreement, the Plan Documents, nor the transactions contemplated hereby or thereby, creates or otherwise gives rise to any fiduciary duty or other duty of trust or confidence.

32. Governing Law; Consent to Jurisdiction. THIS AGREEMENT AND EACH ANCILLARY AGREEMENT (AND ANY CLAIMS, CAUSES OF ACTION, ACTIONS, CONTROVERSIES OR DISPUTES THAT MAY BE BASED UPON, ARISE OUT OF OR RELATE HERETO OR THERETO, TO THE TRANSACTIONS CONTEMPLATED HEREBY AND THEREBY, TO THE NEGOTIATION, EXECUTION OR PERFORMANCE HEREOF OR THEREOF, OR TO THE INDUCEMENT OF ANY PARTY TO ENTER HEREIN AND THEREIN, WHETHER FOR BREACH OF CONTRACT, TORTIOUS CONDUCT OR OTHERWISE AND WHETHER PREDICATED ON COMMON LAW, STATUTE OR OTHERWISE) SHALL IN ALL RESPECTS BE CONSTRUED, PERFORMED AND ENFORCED IN ACCORDANCE WITH, AND GOVERNED BY, THE LAWS OF THE STATE OF NEW YORK, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE (WITHOUT GIVING EFFECT TO THE PRINCIPLES OF CONFLICTS OF LAWS THEREOF, AND WITHOUT THE REQUIREMENT TO ESTABLISH COMMERCIAL NEXUS IN A NEW YORK COUNTY), EXCEPT TO THE EXTENT THAT THE LAWS OF SUCH STATE ARE SUPERSEDED BY THE BANKRUPTCY CODE. FOR SO LONG AS EME IS OR MAY BE SUBJECT TO THE JURISDICTION OF THE BANKRUPTCY COURT, THE PARTIES HERETO IRREVOCABLY ELECT AS THE SOLE JUDICIAL FORUM FOR THE ADJUDICATION OF ANY MATTERS ARISING UNDER OR IN CONNECTION WITH THIS AGREEMENT AND EACH ANCILLARY AGREEMENT (AND ANY CLAIMS, CAUSES OF ACTION, ACTIONS, CONTROVERSIES OR DISPUTES THAT MAY BE BASED UPON, ARISE OUT OF OR RELATE HERETO OR THERETO, TO THE TRANSACTIONS CONTEMPLATED HEREBY AND THEREBY, TO THE NEGOTIATION, EXECUTION OR PERFORMANCE HEREOF OR THEREOF, OR TO THE INDUCEMENT OF ANY PARTY TO ENTER HEREIN AND THEREIN, WHETHER FOR BREACH OF CONTRACT, TORTIOUS CONDUCT OR OTHERWISE AND WHETHER PREDICATED ON COMMON LAW, STATUTE OR OTHERWISE), AND CONSENT TO THE EXCLUSIVE JURISDICTION OF, THE BANKRUPTCY COURT. ALL DISPUTES ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT OR ANY OF THE ANCILLARY AGREEMENTS SHALL BE SUBMITTED TO THE BANKRUPTCY COURT (UNLESS THE ANCILLARY AGREEMENTS SPECIFY TO THE CONTRARY) AS LONG AS EME IS OR MAY BE SUBJECT TO THE JURISDICTION OF THE BANKRUPTCY COURT. IN THAT CONTEXT, AND WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, UPON THE ENTRY OF THE PSA ORDER EACH OF EME AND PURCHASER BY THIS AGREEMENT IRREVOCABLY AND UNCONDITIONALLY: (1) SUBMITS FOR ITSELF AND ITS PROPERTY IN ANY ACTION RELATING TO THIS AGREEMENT OR ANY OF THE ANCILLARY AGREEMENTS, OR FOR RECOGNITION AND ENFORCEMENT OF ANY JUDGMENT IN RESPECT THEREOF, TO THE EXCLUSIVE JURISDICTION OF THE BANKRUPTCY COURT AND AGREES THAT ALL CLAIMS IN RESPECT OF ANY SUCH ACTION SHALL BE HEARD AND DETERMINED IN THE BANKRUPTCY COURT; (2) CONSENTS THAT ANY SUCH ACTION MAY AND SHALL BE BROUGHT IN SUCH COURT AND WAIVES ANY OBJECTION THAT IT MAY NOW OR HEREAFTER HAVE TO THE VENUE OR JURISDICTION OF ANY SUCH ACTION IN ANY SUCH COURT OR

THAT SUCH ACTION WAS BROUGHT IN AN INCONVENIENT COURT AND AGREES NOT TO PLEAD OR CLAIM THE SAME; (3) AGREES THAT SERVICE OF PROCESS IN ANY SUCH ACTION MAY BE EFFECTED BY MAILING A COPY OF SUCH PROCESS BY REGISTERED OR CERTIFIED MAIL (OR ANY SUBSTANTIALLY SIMILAR FORM OF MAIL), POSTAGE PREPAID, TO SUCH SERVICE AGENT (AS DEFINED BELOW) ON BEHALF OF PURCHASER AT SERVICE AGENT’S ADDRESS PROVIDED BELOW; AND (4) AGREES THAT NOTHING IN THIS AGREEMENT OR ANY ANCILLARY AGREEMENT SHALL AFFECT THE RIGHT TO EFFECT SERVICE OF PROCESS IN ANY OTHER MANNER PERMITTED BY THE LAWS OF THE STATE OF NEW YORK.

33. Independent Analysis. Each Party hereby confirms that it has made its own decision to execute this Agreement based upon its own independent assessment of documents and information available to it, as it has deemed appropriate.

34. Notices. All notices hereunder shall be deemed given if in writing and delivered, if sent by facsimile, courier or by registered or certified mail (return receipt requested) to the following addresses and facsimile numbers (or at such other addresses or facsimile numbers as shall be specified by like notice):

If to NRG, to:

NRG Energy, Inc.

211 Carnegie Center

Princeton, NJ 08540-6213

Attn.: Brian Curci

Fax: 609.524.4501

with a copy to:

Baker Botts L.L.P.

1299 Pennsylvania Avenue, NW

Washington, DC 20004-2400

Attn.: Elaine M. Walsh

Fax: 202.585.1042

-and-

Baker Botts L.L.P.

2001 Ross Avenue

Dallas, Texas 75201

Attn.: C. Luckey McDowell

Fax: 214.661.4571

If to the Company or any of the Debtors, to:

Kirkland & Ellis LLP

300 North LaSalle

Chicago, Illinois 60654

Attn: James H.M. Sprayregen, P.C. and David R. Seligman, P.C.

Fax: (312) 862-2200

-and-

Kirkland & Ellis LLP

601 Lexington Avenue

New York, New York 10022

Attn: Joshua A. Sussberg

Fax: (212) 446-4900

If to the Committee, to

Akin Gump Strauss Hauer & Feld LLP

One Bryant Park

Bank of America Tower

New York, NY 10036-6745

Attn.: Ira S. Dizengoff

Fax: (212) 872-1002

-and-

Akin Gump Strauss Hauer & Feld LLP

1333 New Hampshire Avenue, N.W.

Washington, DC 20036-1564

Attn.: James Savin

Fax: (202) 877-4288

If to any Supporting Noteholder, the address set forth in the separate letter to each other Party delivered by counsel to the Supporting Noteholders simultaneously with this Agreement.

If to the counsel for the ad hoc committee of Noteholders, to:

Ropes & Gray LLP

1211 Avenue of the Americas

New York, New York 10036

Attn.: Keith Wofford

Fax: 212.596.9090

-and-

Ropes & Gray LLP

800 Boylston Street

Boston, Massachusetts 02199

Attn.: Stephen Moeller-Sally

Fax: 617.951.7050

If to the Nesbitt Asset Recovery Owner Lessors, to:

Nesbitt Asset Recovery Series J-1

Nesbitt Asset Recovery Series P-1

c/o U.S. Bank National Association, as Owner Trustee

U.S. Bank Corporate Trust Services

300 Delaware Avenue, 9th Floor

Mail Code: EXDE-WDAW

Attn.: Mildred Smith

Wilmington, Delaware 19801

Telephone: (302) 576-3703

Email: milly.smith@usbank.com

with a copy to:

Jenner & Block LLP

Attn.: Daniel R. Murray & Melissa M. Hinds

353 North Clark Street

Chicago, Illinois 60654

Telephone: (312) 222-9350

Fax: (312) 527-0484

Email: dmurray@jenner.com

mhinds@jenner.com

If to the Nesbitt Asset Recovery Owner Participants, to:

Nesbitt Asset Recovery Series LLC, J-1

Nesbitt Asset Recovery Series LLC, P-1

c/o U.S. Bank National Association, as Owner Trustee

U.S. Bank Corporate Trust Services

300 Delaware Avenue, 9th Floor

Mail Code: EXDE-WDAW

Attn.: Mildred Smith

Wilmington, Delaware 19801

Telephone: (302) 576-3703

Email: milly.smith@usbank.com

with a copy to:

Jenner & Block LLP

Attn.: Daniel R. Murray & Melissa M. Hinds

353 N. Clark Street

Chicago, Illinois 60654

Telephone: (312) 222-9350

Fax: (312) 527-0484

Email: dmurray@jenner.com

mhinds@jenner.com

If to the Citibank Owner Lessors, to:

Joliet Trust II

Powerton Trust II

c/o Wilmington Trust Company, as Owner Trustee

Rodney Square North

1100 North Market Street

Attn.: Corporate Trust Administration, Robert Hines

Wilmington, Delaware 19890-0001

Telephone: (302) 636-6197

Fax: (302) 636-4140

Email: rhines@wilmingtontrust.com

with a copy to:

Michael F. Collins

Richards, Layton & Finger, P.A.

One Rodney Square

920 North King Street

Wilmington, Delaware 19801

Telephone: (302) 651-7502

Fax: (302) 498-7502

Email: MFCollins@rlf.com

If to the Citibank Owner Participants, to:

Powerton Generation II, LLC

c/o Associates Capital Investments, L.L.C.

c/o Citigroup Global Markets Inc.

Attn.: Sugam Mehta & Brian Whalen

388 Greenwich Street, 21st Floor

New York, New York 10013

Telephone: (212) 816-1620

Fax: To be advised

Email: Sugam.mehta@citi.com

Brian.whalen@citi.com

with a copy to:

Milbank, Tweed, Hadley & McCloy LLP

Attn.: William Bice & Tyson Lomazow

1 Chase Manhattan Plaza

New York, New York 10005

Telephone: (212) 530-5000

Fax: (212) 530-5219

Email: wbice@milbank.com

tlomazow@milbank.com

If to Bank of New York Mellon as Successor Lease Indenture Trustee or as Successor Pass Through Trustee, to:

The Bank of New York Mellon

525 William Penn Plaza, 38th Floor

Attn.: Bridget Schessler, Vice President

Pittsburgh, Pennsylvania 15259

with a copy to:

O’Melveny & Myers, LLP

Attn.: George Davis

7 Times Square

New York, New York 10036-6524

Telephone: (212) 326-2062

Email: gdavis@omm.com

Any notice given by delivery, mail or courier shall be effective when received at the address provided in this Section 34. Any notice given by facsimile shall be effective upon oral or machine confirmation of transmission.

35. Severability. Whenever possible, each provision of this Agreement shall be interpreted in such manner as to be effective and valid under applicable Law, but if any provision of this Agreement is held to be prohibited by or invalid under applicable Law, such provision shall be ineffective only to the extent of such prohibition or invalidity, without invalidating the remainder of such provision or the remaining provisions of this Agreement. In the event that any part of this Agreement is declared by any court or other judicial or administrative body to be null, void or unenforceable, said provision survives to the extent it is not so declared, and all of the other provisions of this Agreement remain in full force and effect only if, after excluding the portion deemed to be unenforceable, the remaining terms provide for the consummation of the transactions contemplated hereby in substantially the same manner as originally set forth at the later of the date this Agreement was executed or last amended.

36. Mutual Drafting. This Agreement is the result of the Parties’ joint efforts, and each of them and their respective counsel have reviewed this Agreement and each provision hereof has been subject to the mutual consultation, negotiation, and agreement of the Parties, and the language used in this Agreement shall be deemed to be the language chosen by the Parties to express their mutual intent, and therefore there shall be no construction against either Party based on any presumption of that Party’s involvement in the drafting thereof.

37. Headings. The headings used in this Agreement are for convenience of reference only and do not constitute a part of this Agreement and shall not be deemed to limit,

characterize, or in any way affect any provision of this Agreement, and all provisions of this Agreement shall be enforced and construed as if no headings had been used in this Agreement.

38. Amendments. Except as otherwise provided herein, this Agreement may not be modified, amended, or supplemented without prior written agreement signed by (a) NRG, (b) the Debtors, (c) the Committee, (d) the Required Supporting Noteholders, and (e) the PoJo Parties.

[Signature Pages Follow]

	The undersigned Parties hereby execute this Agreement as of the date first set forth above:


	THE SPONSOR:

	NRG ENERGY, INC.

	By:	/s/ Christopher S. Sotos
	Name:	Christopher S. Sotos
	Title:	SVP – Strategy and M&A


	NRG ENERGY HOLDINGS INC.

	By:	/s/ Christopher S. Sotos
	Name:	Christopher S. Sotos
	Title:	Vice President

EDISON MISSION ENERGY 8-K/A