Document:

EX-10.1.A

Exhibit 10.1(A)

Execution Copy

 

AMENDED AND RESTATED CREDIT SLEEVE

AND REIMBURSEMENT AGREEMENT

Originally dated as of

September 24, 2006

among

RELIANT ENERGY POWER SUPPLY, LLC,

The Other Reliant Retail Obligors referred to herein,

as Reimbursement Guarantors,

MERRILL LYNCH COMMODITIES, INC.,

as Sleeve Provider,

and

MERRILL LYNCH & CO., INC.,

as ML Guarantee Provider,

as amended and restated as of May 1, 2009

 

 

TABLE OF CONTENTS

This Table of Contents is not part of the Agreement to which it is attached but is inserted for
convenience of reference only.

	 	 	 	 	 
	 	 	Page
	 
	 	 	 	 
	Section 1. Definitions and Accounting Matters
	 	 	1	 
	 
	 	 	 	 
	1.01. Certain Defined Terms
	 	 	1	 
	1.02. Terms Generally
	 	 	40	 
	1.03. Accounting Terms and Determinations
	 	 	40	 
	 
	 	 	 	 
	Section 2. Credit Sleeve for Reliant Retail Obligors
	 	 	40	 
	 
	 	 	 	 
	2.01. Credit Sleeve Generally; Exclusivity
	 	 	40	 
	2.02. Credit Sleeve of OTC Trading and Hedging Activities
	 	 	44	 
	2.03. Credit Sleeve of Exchange Traded Hedging Activities
	 	 	46	 
	2.04. Offsetting Trades
	 	 	46	 
	2.05. Credit Sleeve of Regulatory Obligations
	 	 	47	 
	2.06. Term
	 	 	47	 
	 
	 	 	 	 
	Section 3. Payments, Fees and Records
	 	 	48	 
	 
	 	 	 	 
	3.01. Notice of Payment on ML Guarantee or Collateral Foreclosure
	 	 	48	 
	3.02. Repayment of Draw Reimbursement Obligations
	 	 	48	 
	3.03. Interest
	 	 	49	 
	3.04. Sleeve Fees
	 	 	50	 
	3.05. Make-Whole Payment
	 	 	50	 
	3.06. Payments Generally
	 	 	51	 
	3.07. Records; Prima Facie Evidence
	 	 	51	 
	 
	 	 	 	 
	Section 4. Conditions
	 	 	51	 
	 
	 	 	 	 
	Section 5. Representations and Warranties
	 	 	52	 
	 
	 	 	 	 
	5.01. Existence, Qualification and Power; Compliance with Laws
	 	 	52	 
	5.02. Authorization; No Contravention
	 	 	52	 
	5.03. Governmental Authorization; Other Consents
	 	 	53	 
	5.04. Binding Effect
	 	 	53	 
	5.05. Financial Statements; No Material Adverse Effect
	 	 	53	 
	5.06. Litigation
	 	 	54	 
	5.07. No Default
	 	 	54	 
	5.08. Ownership of Property; Liens
	 	 	54	 
	5.09. Environmental Matters
	 	 	55	 
	5.10. Insurance
	 	 	56	 
	5.11. Taxes
	 	 	56	 
	5.12. ERISA Compliance
	 	 	56	 
	5.13. Subsidiaries; Equity Interests
	 	 	57	 

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	 	 	Page
	 
	 	 	 	 
	5.14. Margin Regulations; Investment Company Act; Public Utility Holding
Company Act
	 	 	57	 
	5.15. Disclosure
	 	 	57	 
	5.16. Compliance with Laws
	 	 	58	 
	5.17. Intellectual Property; Licenses, Etc.
	 	 	58	 
	5.18. Solvency
	 	 	58	 
	5.19. Perfection, Etc.
	 	 	58	 
	5.20. Employees, Etc
	 	 	59	 
	5.21. Information Technology Systems
	 	 	59	 
	5.22. Marks
	 	 	59	 
	 
	 	 	 	 
	Section 6. Affirmative Covenants
	 	 	59	 
	 
	 	 	 	 
	6.01. Financial Statements
	 	 	59	 
	6.02. Certificates; Other Information
	 	 	60	 
	6.03. Notices
	 	 	61	 
	6.04. Payment of Obligations
	 	 	62	 
	6.05. Preservation of Existence, Etc.
	 	 	62	 
	6.06. Maintenance of Properties
	 	 	62	 
	6.07. Maintenance of Insurance
	 	 	62	 
	6.08. Compliance with Laws
	 	 	62	 
	6.09. Books and Records
	 	 	63	 
	6.10. Inspection Rights
	 	 	63	 
	6.11. Addition and Removal of Transaction Parties; Collateral
Matters; Waterfall
	 	 	63	 
	6.12. Further Assurances
	 	 	67	 
	6.13. Risk Management Policy
	 	 	67	 
	6.14. Employees
	 	 	69	 
	6.15. Information Technology Systems
	 	 	69	 
	6.16. Marks
	 	 	69	 
	6.17. NRG Parent Services Agreement
	 	 	69	 
	6.18. Obligation to Post Collateral to Sleeve Provider
	 	 	70	 
	6.19. Credit Sleeve Termination Date and Transition Period
	 	 	71	 
	6.20. IT Trust Transfer and Allocation Plan
	 	 	72	 
	 
	 	 	 	 
	Section 7. Negative Covenants
	 	 	73	 
	 
	 	 	 	 
	7.01. Liens
	 	 	73	 
	7.02. Investments and Acquisitions
	 	 	73	 
	7.03. Indebtedness
	 	 	73	 
	7.04. Consolidation and Mergers
	 	 	74	 
	7.05. Asset Sales
	 	 	75	 
	7.06. Limitation on Issuances and Sales of Equity Interests
	 	 	76	 
	7.07. Restricted Payments
	 	 	76	 
	7.08. Line of Business
	 	 	77	 
	7.09. Transactions with Affiliates
	 	 	77	 
	7.10. Restrictive Agreements
	 	 	78	 
	7.11. Modification and Enforcement of Purchase and Sale
Agreement; Transaction Documents
	 	 	79	 

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	 	 	Page
	 
	 	 	 	 
	7.12. Fiscal Year
	 	 	79	 
	7.13. Specified Transaction
	 	 	79	 
	7.14. Services
	 	 	79	 
	7.15. Tax Agreements
	 	 	79	 
	7.16. Posting of Collateral
	 	 	80	 
	7.17. Accepted Products
	 	 	80	 
	7.18. Minimum Consolidated EBITDA
	 	 	80	 
	7.19. NRG Parent Credit Agreement; Senior Notes
	 	 	80	 
	 
	 	 	 	 
	Section 8. Events of Default
	 	 	80	 
	 
	 	 	 	 
	8.01. Reliant Events of Default
	 	 	81	 
	8.02. Sleeve Provider Events of Default
	 	 	84	 
	 
	 	 	 	 
	Section 9. Remedies and Termination
	 	 	86	 
	 
	 	 	 	 
	9.01. Remedies of Sleeve Provider
	 	 	86	 
	9.02. Remedies of REPS
	 	 	87	 
	9.03. [Intentionally Deleted]
	 	 	87	 
	9.04. Certain Limitations on Remedies
	 	 	87	 
	 
	 	 	 	 
	Section 10. Unwind
	 	 	88	 
	 
	 	 	 	 
	10.01. Permitted Activities during Unwind Period
	 	 	88	 
	 
	 	 	 	 
	Section 11. Reimbursement Guaranty by Other Reliant Retail Parties
	 	 	89	 
	 
	 	 	 	 
	11.01. Reimbursement Guaranty of the Obligations
	 	 	90	 
	11.02. Payment by Guarantors
	 	 	90	 
	11.03. Liability of Reimbursement Guarantors Absolute
	 	 	90	 
	11.04. Waivers by Reimbursement Guarantors
	 	 	92	 
	11.05. Reimbursement Guarantors’ Rights of Subrogation, Contribution, etc
	 	 	92	 
	11.06. Subordination of Other Obligations
	 	 	93	 
	11.07. Continuing Reimbursement Guaranty
	 	 	93	 
	11.08. Authority of Reimbursement Guarantors or REPS
	 	 	94	 
	11.09. Financial Condition of REPS
	 	 	94	 
	11.10. Bankruptcy, etc.
	 	 	94	 
	 
	 	 	 	 
	Section 12. Miscellaneous
	 	 	95	 
	 
	 	 	 	 
	12.01. Notices
	 	 	95	 
	12.02. Confidentiality; Limitation on Use of Information
	 	 	96	 
	12.03. Reliant Employees
	 	 	98	 
	12.04. Provisions relating to Collateral Trust Agreement and Reimbursement Guarantee
	 	 	99	 
	12.05. Waiver
	 	 	100	 
	12.06. Amendments, Etc.
	 	 	100	 
	12.07. Expenses, Etc.
	 	 	100	 
	12.08. Successors and Assigns
	 	 	101	 

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	 	 	Page
	 
	 	 	 	 
	12.09. Assignments
	 	 	102	 
	12.10. Survival
	 	 	102	 
	12.11. Counterparts
	 	 	102	 
	12.12. Governing Law; Jurisdiction; Etc.
	 	 	102	 
	12.13. Certain Dispute Resolution Procedures
	 	 	103	 
	12.14. Captions
	 	 	103	 
	12.15. Limitation on Interest
	 	 	103	 
	12.16. Integration
	 	 	104	 
	12.17. Conditions to Amendment and Restatement
	 	 	104	 
	12.18. Public Disclosures
	 	 	107	 
	12.19. Non-Recourse
	 	 	107	 

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Schedules and Exhibits

	 	 	 	 	 
	SCHEDULE 1.01(a)

	 	–
	 	Risk Management Policy Violations
	SCHEDULE 1.01(b)

	 	–
	 	Calculations Relating to Exchange Traded
Contracts
	SCHEDULE 1.01(c)

	 	–
	 	Data and Reporting Requirements
	SCHEDULE 1.01(d)

	 	–
	 	ESDS and Fee Schedules
	SCHEDULE 1.01(e)

	 	–
	 	Trademarks
	SCHEDULE 1.01(f)

	 	–
	 	[Intentionally Deleted]
	SCHEDULE 1.01(g)

	 	–
	 	Investments
	SCHEDULE 1.01(h)

	 	–
	 	Liens
	SCHEDULE 1.01(i)

	 	–
	 	C&I Contract Exceptions
	SCHEDULE 2.02(a)

	 	–
	 	Counterparty Document Modification Provisions
	SCHEDULE 2.04

	 	 	 	C&I Contracts and Governmental Contracts
receiving ML Guarantee
	SCHEDULE 3.06(a)

	 	–
	 	Merrill Account
	SCHEDULE 5.06

	 	–
	 	Litigation
	SCHEDULE 5.13

	 	–
	 	List of Subsidiaries
	SCHEDULE 5.16

	 	–
	 	Compliance With Laws
	SCHEDULE 7.14

	 	–
	 	List of Retail Services
	SCHEDULE 12.13

	 	–
	 	List of Calculation Agents
	SCHEDULE 12.17

	 	–
	 	List of Offsetting Trades
	 
	 	 	 	 
	EXHIBIT A1

	 	–
	 	Form of ML Guarantee for Accepted Counterparties
	EXHIBIT A2

	 	–
	 	Form of ML Guarantee for C&I Customers
	EXHIBIT B

	 	–
	 	List of Accepted Counterparties
	EXHIBIT C1

	 	–
	 	[Intentionally Deleted]
	EXHIBIT C2

	 	–
	 	[Intentionally Deleted]
	EXHIBIT C3

	 	–
	 	[Intentionally Deleted]
	EXHIBIT C4

	 	–
	 	[Intentionally Deleted]
	EXHIBIT D1

	 	–
	 	[Intentionally Deleted]
	EXHIBIT D2

	 	–
	 	[Intentionally Deleted]
	EXHIBIT E1

	 	–
	 	Reliant Energy – Retail Risk Policy
	EXHIBIT E2

	 	–
	 	[Intentionally Deleted]
	EXHIBIT F

	 	–
	 	[Intentionally Deleted]
	EXHIBIT G

	 	–
	 	Form of Joinder Agreement
	EXHIBIT H

	 	–
	 	Form of Compliance Certificate
	EXHIBIT I1

	 	–
	 	Sleeve Provider’s Employees with Access to Certain
Reliant Retail Obligor Information
	EXHIBIT I2

	 	–
	 	Reliant Retail Obligors’ Employees with Access to
Certain Merrill Party Information

-v-

 

          AMENDED AND RESTATED CREDIT SLEEVE AND REIMBURSEMENT AGREEMENT (this “Agreement”)
dated as of September 24, 2006, as amended and restated as of May 1, 2009 (the “Third A&R
Date”), among RELIANT ENERGY POWER SUPPLY, LLC, a Delaware limited liability company
(“REPS”), RERH Holdings, LLC, a Delaware limited liability company (“RERH
Holdings”), Reliant Energy Retail Holdings, LLC, a Delaware limited liability company
(“RERH”), Reliant Energy Retail Services, LLC, a Delaware limited liability company
(“RERS”) and RE Retail Receivables, LLC, a Delaware limited liability company
(“RERR”, and together with REPS, RERH Holdings, RERH, RERS and RERR, the “Reliant
Retail Obligors”), MERRILL LYNCH COMMODITIES, INC., a Delaware corporation, as sleeve provider
(the “Sleeve Provider”), and MERRILL LYNCH & CO., INC., a Delaware corporation, as
guarantee provider (the “ML Guarantee Provider”, together with the Sleeve Provider, the
“Merrill Parties”, and together with the Reliant Retail Obligors, the “Parties”,
and each a “Party”).

          The Reliant Retail Obligors, the Sleeve Provider and the ML Guarantee Provider are parties to
the existing Credit Sleeve and Reimbursement Agreement dated as of September 24, 2006, as
previously amended and restated as of December 1, 2006, and as further amended and restated as of
August 1, 2007 (as so previously amended and restated the “Existing CSRA”), pursuant to
which the Reliant Retail Obligors have requested that the Sleeve Provider, and the Sleeve Provider
has agreed to, arrange for the provision of certain guarantees of the ML Guarantee Provider and the
posting of required collateral in connection therewith, in each case, in connection with the
trading and related activities of the Reliant Retail Obligors in the Retail Energy Business (as
defined below).

          NRG Retail LLC, a Delaware limited liability company (“NRG Retail”), and Reliant
Energy, Inc., a Delaware corporation (“REI”) are parties to the LLC Membership Interest
Purchase Agreement dated as of the Signing Date (the “Purchase and Sale Agreement”),
pursuant to which NRG Retail has agreed to purchase, and REI has agreed to sell to NRG Retail, 100%
of the equity interests of (a) RERH Holdings, (b) Reliant Energy Services Texas, LLC, a Delaware
limited liability company (“REST”), and (c) Reliant Energy Texas Retail, LLC, a Delaware
limited liability company (“RETR”), in each case owned by REI (collectively, the
“Retail Acquisition”).

          In connection with the Retail Acquisition, the Parties desire to amend and restate the
Existing CSRA.

          Accordingly, subject to Section 12.17, the Parties agree that the Existing CSRA shall
be amended and restated in its entirety as follows:

          Section 1. Definitions and Accounting Matters.

          1.01. Certain Defined Terms. As used herein, the following terms shall have the following
respective meanings:

          “Accepted Counterparty” means each “Accepted Counterparty” listed in Exhibit
B, as such Exhibit may be updated from time to time in accordance with Section 2.02.

 

          “Accepted Exchange” means the NYMEX, ICE and, with the prior written consent of the
Sleeve Provider, such consent not to be unreasonably withheld or delayed, any other public trading
exchange commonly used by the natural gas or electric power industries for commercial transactions
in Accepted Products.

          “Accepted Product” means, (a) in general, (i) physical and financial power, power
basis, natural gas, natural gas basis, heat rate and natural gas tolling, (ii) options on the
foregoing, (iii) weather derivatives, ancillary services, capacity, transmission congestion rights,
transmission reassignment and renewable energy credits, and (iv) other physical or financial
structured products related to the hedging of retail electricity, as such other structured products
may be approved by the Sleeve Provider, including in such approval such related changes to the
terms and conditions of this Agreement as the Merrill Parties deem appropriate (including the
addition of related Counterparty Limitations in respect of such products), but with approval of
such other structured products not to be unreasonably withheld, conditioned or delayed unless the
impact thereof on all applicable Risk Limits is not measurable using the methodology employed on
Schedule 1.01(c) or, in the case of products traded on an Accepted Exchange, such products
are not capable of being assigned to the Sleeve Provider in connection with the execution of a
related over the counter trade between the Sleeve Provider and REPS in a manner similar to that as
provided in Section 2.03, in the Sleeve Provider’s reasonable discretion, and (b) in
respect of each Accepted Counterparty, each of the foregoing with respect to such Accepted
Counterparty set forth on Exhibit B; provided that (x) all Accepted Products shall be
reasonably related to the Approved Market and (y) all Accepted Products shall have, with respect to
all transactions other than those in the following proviso, a “tenor: of no more than 5 years and 6
months, meaning the time between the date of the execution of the transaction until the final
delivery date of such product for physical transactions or the last day of the final settlement
period for financial transactions, provided that (i) all transactions entered into on or after the
Third A&R Date shall have a “tenor” of no more than 30 months and (ii) any transaction entered into
in connection with the fixing of pricing under a corresponding C&I Contract may have a tenor ending
not later than the last day of the scheduled term of such C&I Contract.

          “Accepted Retail Product” has the meaning ascribed thereto in Schedule
1.01(c).

          “Accepted Trades” means each trade, including purchases and sales, relating to an
Accepted Product with an Accepted Counterparty under a Power and Hedging Contract; provided that
wholesale physical power sales shall be limited to sales within Approved Markets.

          “Acquisition” means any transaction or any series of related transactions by which a
Person (1) acquires any going business or all or substantially all of the assets of any other
Person, or division thereof, whether through purchase of assets, merger, or otherwise or (2)
directly or indirectly acquires 100% of the Equity Interests of any other Person.

          “Additional Coverage Amount” means, at any time following the exercise by the Reliant
Retail Obligors of the Clean-Up Option, the excess (if any) of (a) the Current Mark-to-
Market of all Accepted Trades for which the Merrill Parties continue to provide credit support
plus the Contingent Exposure Amount over (b) the Cash Coverage Amount.

-2-

 

          “Additional Sleeve Fee” means, with respect to any month, an amount equal to 5.875%
per annum of the excess, if any, of the Exposure for such month over the Target Exposure for such
month.

          “Additional Support Credit Rating” means a Credit Rating equal to or less than A3 (or
the equivalent) by Moody’s and A- (or the equivalent) by S&P.

          “Adjusted Volume” means, in respect of the volume under a Mirror OTC Contract, the
volume of the related Exchange Traded Contract(s), adjusted in accordance with Schedule
1.01(b).

          “Adjusted Working Capital” means, for any day, (a) the current assets (excluding
availability under the Working Capital Facility) minus current liabilities of the Reliant Retail
Obligors as of such day, determined on a consolidated basis in accordance with GAAP, less (b) the
outstanding principal balance of the Working Capital Facility.

          “Affiliate” of any specified Person means any other Person directly or indirectly
Controlling or Controlled by or under direct or indirect common Control with such specified Person;
provided that a Person will be deemed to be an Affiliate of RERH Holdings if RERH Holdings has
knowledge that such Person beneficially owns 10% or more of the Voting Stock of RERH Holdings or,
so long as NRG Parent has a direct or indirect beneficial interest in RERH Holdings, NRG Parent;
provided, further, that RERH Holdings shall only be deemed to have knowledge of any Person
beneficially owning 10% or more of NRG Parent’s Voting Stock if such Person has filed a statement
of beneficial ownership pursuant to Sections 13(d) or 13(g) of the Exchange Act or has provided
written notice thereof to RERH Holdings.

          “Allocable State Taxes” means any state or local taxes other than Applicable State
Taxes.

          “Applicable State Taxes” means any state or local taxes (i) that are determined by
reference solely to the income, transactions or attributes of the Reliant Retail Obligors, and (ii)
the sole liability for which is imposed on the Reliant Retail Obligors.

          “Approved ISO” means ERCOT.

          “Approved Market” means the ERCOT Market.

          “Approved Market Regulator” means the FERC and the regulatory agency of each state in
which an Approved Market operates that is responsible for regulating energy markets in such state,
including, with respect to Texas, the PUCT.

          “Agreement” has the meaning ascribed thereto in the title paragraph hereto. The
Agreement is sometimes referred to as the “CSRA”.

          “Asset Sale” means the sale, lease, conveyance or other disposition of any assets.
Notwithstanding the foregoing, none of the following items will be deemed to be an Asset Sale:

-3-

 

     (1) any single transaction or series of related transactions, other than transaction(s)
involving the sale, lease, conveyance or other disposition of any C&I Customers or
Residential Mass Customers, that has gross cash proceeds of less than $3,000,000, to the
extent the aggregate of such transactions, together with the aggregate of all transactions
made in reliance on clause (2) below, since the Third A&R Date does not exceed $10,000,000;

     (2) any single transaction or series of related transactions involving the sale, lease,
conveyance or other disposition of C&I Customers having a load constituting less than 5.0%
of the Reliant Retail Obligors’ total C&I Customer load (based on volume) that has gross
cash proceeds of less than $3,000,000, to the extent the aggregate of such transactions,
together with the aggregate of all transactions made in reliance on clause (1) above, since
the Third A&R Date does not exceed $10,000,000 (provided that in the case of any sale,
lease, conveyance or other disposition of C&I Customer load in accordance with this clause
(2), REPS shall have closed out existing Power and Hedging Contracts necessary to close out
substantially all of the supply for the load sold and caused the return of any ML Guarantee
relating to such supply or such load being sold);

     (3) any transfer of assets between or among the Reliant Retail Obligors;

     (4) any issuance of Equity Interests by any Subsidiary of RERH Holdings to any Reliant
Retail Obligor;

     (5) the sale or lease of products or services in the ordinary course of business, the
sale or other disposition of damaged, worn out or obsolete assets or assets no longer used
or useful in RERH Holdings’ or any of its Subsidiaries’ business and the sale or other
disposition of accounts receivable which are more than sixty (60) days past due for
collection;

     (6) the sale or other disposition of cash or Cash Equivalents to the extent not
prohibited hereby;

     (7) any Permitted Investment;

     (8) any disposition resulting from any Condemnation;

     (9) any disposition of assets in connection with a foreclosure, transfer or deed in
lieu of foreclosure or other exercise of remedial action; and

     (10) any sale, transfer or other disposition of spare parts and spare parts inventory
to any other Subsidiary in the ordinary course of business so long as such spare parts and
spare parts inventory are required in the ordinary course operation of the transferee’s
business or operations at the time of such disposition.

          “Attributable Debt” means, on any date, (a) in respect of a sale and leaseback
transaction, the present value of the obligation of the lessee for net rental payments during the
remaining term of the lease included in such sale and leaseback transaction including any period
for which such lease has been extended or may, at the option of the lessor, be extended (such

-4-

 

present value to be calculated using a discount rate equal to the rate of interest implicit in such
transaction, determined in accordance with GAAP; provided, that if such sale and leaseback
transaction results in a Capital Lease Obligation, the amount of Indebtedness represented thereby
will be determined in accordance with the definition of “Capital Lease Obligation”) and (b) in
respect of any Synthetic Lease Obligation or financing lease, the amount of the remaining lease
payments under the relevant lease that would as of such date be required to be capitalized on a
balance sheet in accordance with GAAP if such lease were accounted for as a Capital Lease
Obligation.

          “Audited Financial Statements” means the audited consolidated balance sheet of RERH
Holdings and its consolidated Subsidiaries for the Fiscal Year ended December 31, 2007, and the
related consolidated statements of income or operations, stockholders’ equity, comprehensive income
(loss) and cash flows for such Fiscal Year, setting forth in each case in comparative form the
figures as of the end of, and for, the previous Fiscal Year, all in reasonable detail and prepared
in accordance with GAAP.

          “Audit Committee” means the Audit Committee of the Board of Directors or any
equivalent committee of the Board of Directors having equivalent responsibilities to the Audit
Committee of the Board of Directors of NRG Parent as of the Third A&R Date.

          “Bankruptcy Code” means the Bankruptcy Reform Act of 1978, as heretofore and hereafter
amended, as codified at 11 U.S.C. Section 101 et seq.

          “Bankruptcy Event” means, with respect to any Person, a “Bankruptcy” (as defined in
the 2003 ISDA Credit Derivatives Definitions, published by the International Swaps and Derivatives
Association, Inc., determined as if such Person were a “Reference Entity”) of such Person.

          “Base Rate” means for any day a fluctuating rate per annum equal to the higher of (a)
the Federal Funds Rate in effect for such day plus 1/2 of 1% and (b) the Prime Rate in effect for
such day. Any change in the Base Rate due to a change in the Prime Rate or the Federal Funds Rate
shall be effective from and including the effective date of such change in the Prime Rate or the
Federal Funds Rate, respectively.

          “BCFe” means, with respect to any Accepted Trade, the contracted volume of the Reliant
Retail Obligors power and gas positions for such transaction expressed as a billion cubic feet
equivalent, and in the case of power, by converting fixed price power to Henry Hub gas using a
market heat rate, as calculated by the Sleeve Provider in a manner consistent with Section VII of
the Risk Management Policy.

          “Blocked Account Agreement” means collectively, (a) the Blocked Account Agreement
dated as of the Third A&R Date, among The Bank of New York Mellon, the Collateral Trustee, and the
Reliant Retail Obligors, (b) the Blocked Account Agreement dated as
of the Initial Effective Date, among Wells Fargo Bank NA, the Collateral Trustee, and RERS,
and (c) the Securities Account Control Agreement dated as of the Initial Effective Date, among U.S.
Bank National Association, as collateral trustee, Mellon Financial Markets, LLC, as securities
intermediary, and RERH.

-5-

 

          “Board of Directors” means the Board of Directors of NRG Parent or the board of
directors, board of members, board of managers or similar body having equivalent responsibilities
(or, in each case, a special committee of any such board or body) to the Board of Directors of NRG
Parent as of the Third A&R Date.

          “Business Day” means any day other than a Saturday, Sunday or other day (a) on which
commercial banks are authorized to close under the Laws of, or are in fact closed in, Houston,
Texas or New York City, (b) if the context relates to the NYMEX or ICE, on which the NYMEX or ICE
is authorized to close or in fact is closed, or (c) if the context relates to ERCOT, on which ERCOT
is authorized by North American Electric Reliability Corporation (NERC), or its successor, to
close or in fact is closed.

          “Business Services Mass Customer” means any C&I Customer acquired through mass
marketing; provided that if the addition of any C&I Customer that has a individual peak demand
greater than 300 kW per hour as a Business Services Mass Customer would result in an aggregate
annualized expected load of all Business Services Mass Customers with individual peak demands
greater than 300 kW per hour added after the Third A&R Date of more than 250,000 MWh, then such
additional C&I Customer shall not qualify as a “Business Services Mass Customer”.

          “C&I Contract” means a contract for the sale of any retail electric products or
services by any Reliant Retail Obligor to a C&I Customer that does not qualify as a Business
Services Mass Customer.

          “C&I Customer” means any commercial, industrial or governmental customer of the
Reliant Retail Obligors.

          “Calculation Agent” has the meaning ascribed thereto in Section 12.13.

          “Capital Lease Obligation” means, as applied to any Person, at the time any
determination is to be made, the amount of the liability in respect of a capital lease that would
at that time be required to be capitalized on a balance sheet of such Person in accordance with
GAAP in the reasonable judgment of such Person, and the stated maturity thereof shall be the date
of the last payment of rent or any other amount due under such lease prior to the first date upon
which such lease may be prepaid by the lessee without payment of a penalty.

          “Capital Outlay Date” has the meaning ascribed thereto in Section 3.01.

          “Capital Stock” means:

     (a) in the case of a corporation, corporate stock;

     (b) in the case of an association or business entity, any and all shares, interests,
participations, rights or other equivalents (however designated) of corporate stock;

     (c) in the case of a partnership or limited liability company, partnership interests
(whether general or limited) or membership interests; and

-6-

 

          (d) any other interest or participation that confers on a Person the right to receive a
share of the profits and losses of, or distributions of assets of, the issuing Person, but
excluding from all of the foregoing any debt securities convertible into Capital Stock,
whether or not such debt securities include any right of participation with Capital Stock.

          “Cash Collateral” means, with respect to any Collateral Account, Collateral consisting
of the balance of Dollars credited to such Collateral Account.

          “Cash Coverage Amount” means, at any time following the exercise by the Reliant Retail
Obligors of the Clean-Up Option, an amount equal to the lesser of (a) the greater of (i) 125% of
the Current Mark-to-Market of all Accepted Trades for which the Merrill Parties continue to provide
credit support and (ii) the Current Mark-to-Market of all Accepted Trades for which the Merrill
Parties continue to provide credit support plus $25,000,000 and (b) the Current
Mark-to-Market of all Accepted Trades for which the Merrill Parties continue to provide credit
support plus 100% the Contingent Exposure Amount.

          “Cash Equivalents” means:

     (a) Dollars;

     (b) securities issued or directly and fully guaranteed or insured by the United States
government or any agency or instrumentality of the United States government (provided that
the full faith and credit of the United States is pledged in support of those securities)
having maturities of not more than one year from the date of acquisition;

     (c) deposit accounts with any other bank that has a long-term debt rating at the time
of investment of A+ or better by S&P and A1 or better by Moody’s (an “Approved
Bank”);

     (d) repurchase obligations for underlying securities of the types described in
clause (b) entered into with an Approved Bank at the time acquired, issued or entered into
(as applicable and whichever is latest), in each case, having a maturity of not more than
one year from the date of acquisition and secured by securities of the type described in
clause (b), the market value of which (including accrued interest) is not less than the
amount of the applicable repurchase agreement;

     (e) commercial paper with a rating at the time of investment of A-1 by S&P and P-1 by
Moody’s and, in each case, maturing within one year after the date of acquisition;

     (f) money market funds which invest primarily in Cash Equivalents of the kinds
described in clauses (a) through (e) of this definition; and

     (g) certificates of deposit and Eurodollar time deposits with maturities o six months
or less from the date of acquisition, bankers’ acceptances with maturities not exceeding 12
months and overnight bank deposits, in each case, with any domestic commercial bank having
capital surplus in excess of $500,000,000 and a Thomson Bank

-7-

 

Watch Rating of “B” or better
or, if Thomson Bank Watch Rating does not rate the relevant bank, an equivalent rating
issued by an equivalent non-US rating agency, if any.

          “Change of Control” means the occurrence of any of the following:

     (a) the direct or indirect sale, transfer, conveyance or other disposition (other than
by way of merger or consolidation), in one or a series of related transactions, of all or
substantially all of the properties or assets of NRG Parent and its Subsidiaries taken as a
whole to any “person” (as that term is used in Section 13(d) of the Exchange Act, but
excluding any employee benefit plan of NRG Parent or any of its Subsidiaries, and any Person
or entity acting in its capacity as trustee, agent or other fiduciary or administrator of
such plan);

     (b) the adoption of a plan relating to the liquidation or dissolution of NRG Parent;

     (c) the consummation of any transaction (including any merger or consolidation) the
result of which is that any “person” (as defined above) becomes the Beneficial Owner,
directly or indirectly, of more than 40% of the Voting Stock of NRG Parent, measured by
voting power rather than number of shares;

     (d) NRG Parent consolidates with, or merges with or into, any Person, or any Person
consolidates with, or merges with or into, NRG Parent, in any such event pursuant to a
transaction in which any of the outstanding Voting Stock of NRG Parent or such other Person
is converted into or exchanged for cash, securities or other property, other than any such
transaction where the Voting Stock of NRG Parent outstanding immediately prior to such
transaction is converted into or exchanged for Voting Stock (other than Disqualified Stock)
of the surviving or transferee Person constituting a majority of the outstanding shares of
such Voting Stock of such surviving or transferee Person (immediately after giving effect to
such issuance); and

     (e) any Reliant Retail Obligor ceases to be a Wholly Owned Subsidiary of NRG Parent
(excluding for purposes of this clause (e), the Class B Membership Units in RERH Holdings
held by the Sleeve Provider).

          It shall not be deemed a “Change of Control” pursuant to clauses (a), (c) or
(d) above, if (i) NRG Parent or the surviving entity, as the case may be, has the same or
higher Credit Rating from each of S&P and Moody’s immediately following such transfer, sale,
disposition, merger, consolidation or other transaction as NRG Parent did immediately prior to such
transfer, sale, disposition, merger, consolidation or other transaction, or (ii) the Reliant Retail
Obligors cause NRG Parent or the surviving entity, as the case may be, to make an additional
contribution in
cash to the capital of RERH Holdings in an amount equal to 50% of the Exposure, measured
immediately after such change as described in clauses (a), (c), or (d)
above, within 3 Business Days of such change, all of which amount is posted to the Sleeve Provider
(provided that any such contribution shall be in addition to, and shall not relieve NRG Parent of
any obligation to make, any Required Equity Contribution to the extent required by the Parent
Contribution Agreement).

-8-

 

          “Chief Executive Officer” means the Chief Executive Officer of NRG Parent or the
individual with equivalent responsibilities to the Chief Executive Officer as of the Third A&R
Date.

          “Chief Financial Officer” means the Chief Financial Officer of NRG Parent or the
individual with equivalent responsibilities to the Chief Financial Officer as of the Third A&R
Date.

          “Chief Risk Officer” means the Chief Risk Officer of NRG Parent or the individual with
equivalent responsibilities to the Chief Risk Officer as of the Third A&R Date.

          “Clean-Up Option” has the meaning ascribed thereto in Section 6.19.

          “Code” means the Internal Revenue Code of 1986, as amended from time to time.

          “Collateral” has the meaning ascribed thereto in the Collateral Trust Agreement.

          “Collateral Accounts” means the deposit, securities, and investment accounts subject
to the Blocked Account Agreement.

          “Collateral Foreclosure” means any setoff, application or foreclosure taken by an
applicable secured party with respect to any Merrill Collateral.

          “Collateral Trust Agreement” means the Collateral Trust Agreement dated as of the
Initial Effective Date, among each Reliant Retail Obligor and the Collateral Trustee under which
the Merrill Parties are Secured Counterparties as therein defined.

          “Collateral Trustee” means the Collateral Trustee under the Collateral Trust
Agreement, including any successors from time to time acting as such thereunder.

          “Commitment” means (i) the commitment of the Working Capital Facility Provider to make
Loans to REPS under, and in accordance with, the Working Capital Facility and (ii) the commitments
of Replacement Working Capital Providers to make Loans to any of the Reliant Retail Obligors under,
and in accordance with, any Replacement Working Capital Facility.

          “Compliance Certificate” means a compliance certificate in substantially the form of
Exhibit H.

          “Compliance Information” means, with respect to any Compliance Party, the information
customarily requested from similarly situated trading counterparties by the Sleeve
Provider or the ML Guarantee Provider in the ordinary course of their respective businesses
(i) to comply with applicable Laws (including the USA PATRIOT Act (Title III of Pub. L. 107-56
(signed into law October 26, 2001))) and (ii) to comply with other internal compliance
requirements, in each case to the extent the same are of general application to, and established by
the Sleeve Provider or the ML Guarantee Provider in the ordinary course of their respective
businesses for, similarly situated trading counterparties.

-9-

 

          “Compliance Party” means any Accepted Counterparty, C&I Customer, Governmental
Customer, Governmental Authority or any other Person entitled to benefit from (i) an ML Guarantee,
or (ii) the posting of cash collateral by, or any agreement to post or provide cash collateral by,
the Sleeve Provider.

          “Compliance Requirements” means, with respect to any Compliance Party, the receipt by
the Sleeve Provider or the ML Guarantee Provider, as applicable, from such Compliance Party of
applicable Compliance Information that satisfies the compliance requirements generally established
by the Sleeve Provider or the ML Guarantee Provider for similarly situated trading counterparties
in the ordinary course of their respective businesses.

          “Computation Period” means, as of the last day of any month, the last twelve full
calendar months ending on such last day.

          “Condemnation” shall mean any condemnation or other taking, or temporary or permanent
requisition of, any property, any interest therein or right appurtenant thereto, or any change of
grade affecting any property, in each case as the result of the exercise of any right of
condemnation or eminent domain. A sale or other transfer to a Governmental Authority in lieu of,
or in anticipation of, condemnation shall be deemed to be a Condemnation.

          “Consolidated EBITDA” means, for any Person for any period determined on a
consolidated basis in accordance with GAAP, an amount equal to, without any duplication, (a) net
income (before giving effect to the cumulative effect of changes in accounting principles and
discontinued operations and before income taxes and franchise taxes to the extent based on the
income of such Person and its Subsidiaries) for such period, plus (b) Consolidated Interest Charges
for such period, plus (c) depreciation, depletion, impairment, abandonment and amortization expense
for such period (including any increase in amortization or depreciation or other non-cash charges
resulting from the application of purchase accounting in relation to the transactions contemplated
by the Transaction Documents), plus (d) net unrealized losses related to trading or non-trading
energy derivatives, plus (e) any expenses or charges related to any investment, disposition,
recapitalization or indebtedness not prohibited to be incurred or undertaken under this Agreement
including a refinancing thereof (whether or not successful), including such fees, expenses or
charges related to this Agreement, the other Transaction Documents and each Transaction
contemplated hereby or thereby, plus (f) any professional and underwriting fees related to any
investment, recapitalization or indebtedness not prohibited to be incurred or undertaken under this
Agreement, the other Transaction Documents and each transaction contemplated hereby or thereby,
plus (g) without duplication, any writeoffs, writedowns or other non-cash charges reducing net
income for such period, (excluding any such charge that represents an accrual or reserve for a cash
expenditure for a future period), plus (h) all non-cash losses or charges classified as
extraordinary, unusual or nonrecurring (including
severance, relocation and other restructuring costs), and related tax effects according to
GAAP, plus (i) any impairment charge or asset write-off pursuant to Financial Accounting Statement
No. 142 and/or 144, or any successor pronouncement, minus (j) net unrealized gains related to
trading or non-trading energy derivatives, and minus (k) any non-cash gains or other items
increasing net income for such period, other than such gains that represent an accrual of revenue
in the ordinary course of business; provided, however, for purposes of this definition, (i) gains
and losses on the disposition of assets not in the ordinary course of business, and (ii) any cash

-10-

 

extraordinary, unusual or other non-recurring gains or losses shall be excluded to the extent
incurred or realized during such period in accordance with GAAP from the calculation of
Consolidated EBITDA. If during any period for which Consolidated EBITDA is being determined, RERH
Holdings or any Subsidiary shall have made or consummated any asset sale that is not fully included
in discontinued operations, then Consolidated EBITDA shall, to the extent such asset sale is not
excluded from Consolidated EBITDA pursuant to the foregoing proviso, be determined on a pro forma
basis for such period as if such asset sale had been made or consummated as of the beginning of the
first day of such period.

          “Consolidated Interest Charges” means, without duplication, for any period for RERH
Holdings and its Subsidiaries on a consolidated basis, (a) the total interest expense for such
period (including the Monthly Sleeve Fee (and any similar payment payable to a Replacement Sleeve
Provider, however defined), amortization of debt issuance costs and original issue discount,
non-cash interest payments, the interest component of any deferred payment obligations, the
interest component of all payments associated with Capital Lease Obligations, and net of the effect
of all payments made or received pursuant to hedging obligations in respect of interest rates),
whether or not included as interest expense in accordance with GAAP), plus (b) any capitalized
interest during such period, plus (c) any interest accruing on indebtedness of another Person that
is Guaranteed by such Person or one of its Subsidiaries or secured by a Lien on assets of such
Person or one of its Subsidiaries, whether or not such Guarantee or Lien is called upon; minus (d)
(i) the total interest income of such Person and its Subsidiaries, including interest income from
any escrow or trust account, and (ii) in all cases whether expensed or amortized, any interest
expense attributable to (A) any makewhole or premium paid in connection with the repayment of any
Indebtedness not prohibited hereunder, or (B) any upfront direct or indirect costs, expenses, or
fees incurred in connection with, including those arising out of the preparation for the maturity
of, (1) this Agreement or the Working Capital Facility or (2) the incurrence of any Indebtedness
not prohibited hereunder after the Third A&R Date.

          “Contingent Exposure Amount” means, with respect to any Accepted Trades, the aggregate
Dollar amount of all potential liability of the Merrill Parties in respect of such Accepted Trades,
as reasonably determined by the Merrill Parties to a 99.0% (2.32-sigma) confidence level.

          “Contractual Obligation” means, as to any Person, any provision of any security issued
by such Person or of any agreement, instrument or other undertaking to which such Person is a party
or by which it or any of its property is bound.

          “Controller” means the Controller of NRG Parent or the individual with equivalent
responsibilities to the Controller as of the Third A&R Date.

          “Control” means, with respect to any Person, the possession, directly or indirectly,
of the power to direct or cause the direction of the management or policies of such Person, whether
through the ownership of voting securities, by agreement or otherwise; and the terms “controlling,”
“controlled by” and “under common control with” have correlative meanings.

          “Core Collateral Subsidiary” has the meaning ascribed thereto in the Parent
Contribution Agreement.

-11-

 

          “Counterparty” means a Person that at any time sells, delivers, purchases and/or
receives, or is or can be required to sell, deliver, purchase and/or receive, Accepted Products to
or from any Reliant Retail Obligor.

          “Counterparty Document” means, with respect to each Accepted Counterparty, the Power
and Hedging Contract, Credit Support Agreement and ML Guarantee and any related certificates,
documents and agreements, as applicable, relating to such Accepted Counterparty.

          “Counterparty Limitations” means, in respect of an Accepted Counterparty and an
Accepted Product, each of the limits set forth on Exhibit B.

          “CPT” means the prevailing time in Houston, Texas.

          “Credit Rating” means at any time:

     (a) with respect to any Accepted Counterparty, if Moody’s or S&P has issued a credit
rating for long-term senior unsecured, and non-credit enhanced, Dollar-denominated debt of
such Accepted Counterparty, such credit rating, or, if such credit rating is not available,
the issuer rating of such Accepted Counterparty, issued by each of Moody’s and S&P, as
applicable, as in effect at such time in respect of the Accepted Counterparty (in the event
of a split rating the lower rating shall apply);

     (b) with respect to any Accepted Counterparty, if (i) clause (a) above does not apply
at such time, (ii) the obligations of such Accepted Counterparty are guaranteed by any
Person, (iii) the Sleeve Provider has approved in its reasonable discretion the form of such
guarantee and (iv) Moody’s or S&P has issued a credit rating for long-term senior unsecured,
and non-credit enhanced debt of such guarantor, such credit rating issued by each of Moody’s
and S&P, as applicable, as in effect at such time in respect of the guarantor (in the event
of a split rating the lower rating shall apply);

     (c) with respect to any Accepted Counterparty, if neither clause (a) nor clause (b)
above shall apply at such time, the credit rating, if any, for such Accepted Counterparty
designated in writing by the Sleeve Provider and in effect at such time for purposes of this
Agreement (which the Sleeve Provider may designate or withhold in its reasonable discretion
after consultation with, and review of any relevant credit information provided by, the
Reliant Retail Obligors); or

     (d) with respect to the ML Guarantee Provider, if Moody’s or S&P has issued a credit
rating for long-term senior unsecured, and non-credit enhanced, Dollar-denominated debt of
the ML Guarantee Provider, such credit rating, or, if such credit
rating in not available, the issuer rating of the ML Guarantee Provider, issued by
Moody’s or S&P, as applicable, as in effect at such time in respect of the ML Guarantee
Provider.

          “Credit Sleeve Obligations” mean the Obligations of the Reliant Retail Obligors under
this Agreement, including the Reimbursement Obligations and the Obligations in respect of the
payment of all Monthly Sleeve Fees, Additional Sleeve Fees and Excess Exposure Fee required
hereunder.

-12-

 

          “Credit Sleeve Termination Date” means the earliest date on which the Credit Sleeve
Obligations have been terminated and satisfied in full and all Merrill Collateral, including all ML
Guarantees, posted by the Merrill Parties has been returned to the Merrill Parties or reimbursement
has been made therefore and on which all other obligations owed to the Merrill Parties hereunder
and under the other Transaction Documents have been paid and satisfied in full in accordance with
Section 6.19 (in each case, other than indemnities and any similar obligations of the
Reliant Retail Obligors not then due and payable that expressly survive termination of this
Agreement and the other Transaction Documents).

          “Credit Support Agreement” means a credit support agreement among an Accepted
Counterparty, REPS and the Sleeve Provider, in each case, in the form in effect as of the Third A&R
Date, or in such other form as REPS and the Sleeve Provider may otherwise agree, in accordance with
Section 2.02, providing for credit support with respect to a Power and Hedging Contract.

          “Current Draw Reimbursement Obligations” means Draw Reimbursement Obligations other
than any portion thereof that becomes a Deferred Reimbursement Obligation.

          “Current Mark-to-Market” has the meaning ascribed thereto in Schedule 1.01(c).

          “Current Payables” means, for any day, the aggregate accounts payable balance of the
Reliant Retail Obligors under all Power and Hedging Contracts and Power Purchase Agreements as of
the first day of the calendar month in which such day falls, as reflected in the books and records
of the Reliant Retail Obligors.

          “Data Failure Event of Default” has the meaning ascribed thereto in Schedule
1.01(c).

          “Default” means an Event of Default or an event that with notice or lapse of time or
both would, unless cured or waived, become an Event of Default.

          “Deferred Cure Reimbursement Obligations” has the meaning ascribed thereto in
Section 12.07(b).

          “Deferred Draw Reimbursement Obligations” has the meaning ascribed thereto in
Section 3.02.

          “Deferred Reimbursement Obligations” means the Deferred Draw Reimbursement Obligations
and Deferred Cure Reimbursement Obligations.

          “Disqualified Stock” means any Capital Stock that, by its terms (or by the terms of
any security into which it is convertible, or for which it is exchangeable, in each case, at the
option of the holder of the Capital Stock), or upon the happening of any event, matures or is
mandatorily redeemable, pursuant to a sinking fund obligation or otherwise, or redeemable at the
option of the holder of the Capital Stock, in whole or in part, on or prior to the date that is 91
days after the Credit Sleeve Termination Date. Notwithstanding the preceding sentence, any Capital
Stock of NRG Parent that would constitute Disqualified Stock solely because the holders of the
Capital Stock have the right to require NRG Parent to repurchase such Capital Stock upon

-13-

 

the
occurrence of a change of control or an asset sale shall not constitute Disqualified Stock. The
amount of Disqualified Stock of any Reliant Retail Obligor deemed to be outstanding at any time for
purposes of this Agreement shall be equal to the maximum amount that RERH Holdings and its
Subsidiaries may become obligated to pay upon the maturity of, or pursuant to any mandatory
redemption provisions of, such Disqualified Stock, exclusive of accrued dividends.

          “Dollars” and “$” means lawful money of the United States of America.

          “Downgrade Event” means, with respect to any Person, the Credit Rating of such Person
in effect on the Initial Effective Date or when such Person first becomes an Accepted Counterparty,
as applicable, is downgraded by either of Moody’s or S&P by two notches or has been downgraded by
one notch and put on watch list for a possible additional downgrade by either of Moody’s or S&P.

          “Draw Reimbursement Obligations” has the meaning ascribed thereto in Section
3.02.

          “EEI Master Agreement” means the Edison Electric Institute Master Power Purchase and
Sale Agreement, version 2.1 (modified 04/25/00) as in effect from time to time.

          “EFS Transaction” means, in respect of any NYMEX Exchange Traded Contract(s) held by
REPS, an exchange of such futures for a swap transaction between REPS and the Sleeve Provider
executed on the NYMEX, in accordance with any applicable rules and procedures, pursuant to which
the Sleeve Provider and REPS exchange (a) the number of NYMEX Exchange Traded Contract(s) held by
REPS at the volume weighted average price at which REPS entered into such Exchange Traded
Contract(s) for (b) related Mirror NYMEX OTC Contracts.

          “Energy” means “Energy” as defined in Schedule P to the EEI Master Agreement.

          “Environmental Laws” means any and all Federal, state, local, regional and foreign
statutes, laws, rules of common law, constitutional provisions, regulations, ordinances, rules
judgments, orders, decrees, permits, concessions, grants, franchises, licenses, agreements or
governmental restrictions relating to pollution and the protection of the environment or Hazardous
Materials, including, those relating to the use analysis, generation, manufacture, storage,
discharge, emission, release, disposal, transportation treatment, investigation, removal, or
remediation of Hazardous Materials. Environmental Laws include those acts commonly referred to as:
the Comprehensive Environmental Response, Compensation and Liability Act of 1980; the Superfund
Amendments and Reauthorization Act; the National Environmental Policy
Act; the Hazardous Materials Transportation Act; the Resource Conservation and Recovery Act,
the Solid Waste Disposal Act, the Clean Water Act, the Clean Air Act, the Toxic Substances Control
Act, and the Occupational Safety and Health Act, and their state counterparts.

          “EOO Transaction” means, in respect of any NYMEX Exchange Traded Contract(s) held by
REPS, an exchange of such NYMEX options for an over-the-counter option transaction between REPS and
the Sleeve Provider executed on NYMEX, in accordance with any applicable rules and procedures,
pursuant to which the Sleeve Provider and REPS exchange

-14-

 

(a) the number of NYMEX options held by
REPS for (b) related Mirror NYMEX OTC Contracts.

          “Equity Interests” means Capital Stock and all warrants, options or other rights to
acquire Capital Stock (but excluding any debt security that is convertible into, or exchangeable
for, Capital Stock).

          “ERCOT” means the Electric Reliability Council of Texas, or any successor thereto.

          “ERCOT Market” means the electric market to which ERCOT regulation applies.

          “ERISA” means the Employee Retirement Income Security Act of 1974, as amended from
time to time, and the regulations promulgated thereunder.

          “ERISA Affiliate” means any trade or business (whether or not incorporated) which is a
member of the controlled group of RERH Holdings or under common control with RERH Holdings within
the meaning of Section 414(b) or (c) of the Code (and Sections 414(m) and (o) of the Code for
purposes of provisions relating to Section 412 of the Code) or Section 4001(a)(14) of ERISA.

          “ERISA Event” means (a) a reportable event (within the meaning of Section 4043 of
ERISA) with respect to a Pension Plan; (b) a withdrawal by RERH Holdings or any ERISA Affiliate
from a Pension Plan subject to Section 4063 of ERISA during a plan year in which it was a
substantial employer (as defined in Section 4001(a)(2) of ERISA) or a cessation of operations that
is treated as such a withdrawal under Section 4062(e) of ERISA; (c) a complete or partial
withdrawal (within the meaning of Sections 4203 or 4205 of ERISA) by RERH Holdings or any ERISA
Affiliate from a Multiemployer Plan or notification that a Multiemployer Plan is in reorganization;
(d) the filing of a notice of intent to terminate, the treatment of a Plan amendment as a
termination under Sections 4041 or 4041A of ERISA, or the commencement of proceedings by the PBGC
to terminate a Pension Plan or Multiemployer Plan; (e) an event or condition which constitutes
grounds under Section 4042 of ERISA for the termination of, or the appointment of a trustee to
administer, any Pension Plan or Multiemployer Plan; or (f) the imposition of any liability under
Title IV of ERISA, other than for PBGC premiums due but not delinquent under Section 4007 of ERISA,
upon RERH Holdings or any ERISA Affiliate.

          “ESDS” means the Exposure Step-Down Schedule set forth on Schedule 1.01(d).

          “ESDS Calculation Date” means, with respect to any calendar month, the last Business
Day of the immediately preceding month.

          “Event of Default” means a Sleeve Provider Event of Default or a Reliant Event of
Default.

          “Excess Exposure Fee” means, with respect to any calendar month, the “Excess Exposure
Fee” for such month set forth on the Fee Schedule.

-15-

 

          “Exchange Act” means the Securities Exchange Act of 1934, as amended.

          “Exchange Traded Contract” means each trade of an Accepted Product traded and cleared
on an Accepted Exchange held or obtained by REPS relating to the sale, purchase, delivery or
receipt of any Accepted Product.

          “Excluded Subsidiary” has the meaning ascribed thereto in the Parent Contribution
Agreement.

          “Exclusivity and Fee Letter” means that certain letter dated February 22, 2009 from
NRG Parent and accepted and agreed to by the Merrill Parties, relating to the transactions
contemplated hereby.

          “Exempt Subsidiary” has the meaning ascribed thereto in the Parent Contribution
Agreement.

          “Existing CSRA” has the meaning ascribed thereto in the introductory paragraphs to
this Agreement.

          “Exposure” means, as of any ESDS Calculation Date, (a) the sum, without duplication,
of (i) the Current Mark-to-Market, (ii) all cash, letters of credit, surety bonds and any cash
equivalents posted by the Merrill Parties under this Agreement, (iii) the aggregate amount of all
outstanding ML Guarantees (other than any ML Guarantee of an Accepted Trade) and (iv) Current
Payables, minus (b) all Posted Collateral, in each case, as determined by the Merrill
Parties as of such ESDS Calculation Date and set forth in the related Exposure Report; provided
that for purposes of the foregoing (a) Current Mark-to-Market shall exclude the effect of any
Accepted Trades under the PMI/REPS RW ISDA so long as no “Event of Default” or “Termination Event”
shall have occurred and be continuing thereunder, (b) Current Mark-to-Market shall exclude the
effect of the True Forward Hedge Positions solely to the extent such positions are in-the-money to
the Reliant Retail Obligors and exceed Current Payables and (c) the amount of any ML Guarantee
shall be deemed equal to the stated or determinable amount of the related primary obligation, or
portion thereof, in respect of which such ML Guarantee is made or, if not stated or determinable,
the maximum reasonably anticipated liability in respect thereof as determined by ML Guarantee
Provider in good faith. Without limiting any challenge rights of the Reliant Retail Obligors
provided in Part I of Schedule 1.01(c), the determination of Exposure shall be conclusive
and binding on all of the Parties hereto absent manifest error. As used in this definition, “True
Forward Hedge Positions” means all Forward Hedge Positions (as defined in Schedule 1.01(c)) other
than Mirror OTC Contracts.

          “Exposure Report” has the meaning ascribed thereto in Schedule 1.01(c).19.

          “Fair Market Value” means the value that would be paid by a willing buyer to a willing
seller in a transaction not involving distress or necessity of either party, determined in good
faith by the chief financial officer of RERH Holdings or Board of Directors of RERH Holdings or the
selling entity (unless otherwise provided in this Agreement).

          “Failure to Pay or Post” means, in respect of any Accepted Counterparty, any event of
default (after any applicable cure period) for failure to make payment or post collateral

-16-

 

(howsoever defined) by such Accepted Counterparty under its related Power and Hedging Contract with
REPS (including, as applicable, its related Credit Support Agreement).

          “Federal Funds Rate” means, for any day, the rate per annum equal to the weighted
average of the rates on overnight Federal funds transactions with members of the Federal Reserve
System arranged by Federal funds brokers on such day, as published by the Federal Reserve Bank of
New York on the Business Day next succeeding such day; provided, that (a) if such day is not a
Business Day, the Federal Funds Rate for such day shall be such rate on such transactions on the
next preceding Business Day as so published on the next succeeding Business Day, and (b) if no such
rate is so published on such next succeeding Business Day, the Federal Funds Rate for such day
shall be the average rate (rounded upward, if necessary, to a whole multiple of 1/100 of 1%)
charged to Bank of America, N.A. on such day on such transactions as determined by the Sleeve
Provider.

          “Fee Schedule” means the fee schedule set forth on Schedule 1.01(d).

          “Federal Reserve Board” means the Board of Governors of the Federal Reserve System of
the United States of America.

          “Federal Tax Payable Amount” has the meaning set forth in the NRG Parent Services
Agreement.

          “FERC” means the Federal Energy Regulatory Commission, or any successor thereto.

          “Financial Officer” means, with respect to any Reliant Retail Obligor, any of the
chief financial officer, principal accounting officer, treasurer or controller thereof.

          “First Execution Date” means September 24, 2006.

          “Fiscal Quarter” means each three month period of a Fiscal Year ending on March 31,
June 30, September 30, and December 31.

          “Fiscal Year” means any period of twelve consecutive calendar months ending on
December 31; references to a Fiscal Year with a number corresponding to any calendar year
(e.g., the “2006 Fiscal Year”) refer to the Fiscal Year ending on December 31 of
such calendar year.

          “GAAP” means generally accepted accounting principles set forth in the opinions and
pronouncements of the Accounting Principles Board and statements and pronouncements of the
Financial Accounting Standards Board or in such other statements by such other entity as have been
approved by a significant segment of the accounting profession, which are in effect from time to
time.

          “GLO” means the Texas General Land Office.

          “GLO Amount” means, at any time, the aggregate outstanding amount owed to GLO in
respect of the outstanding GLO Payments (as such term is defined in the GLO Contract).

-17-

 

          “GLO Assignment Agreement” means the partial assignment and assumption agreement dated
as of the Third A&R Date in respect of the GLO Contract, between REPS, as assignor, and RETR, as
assignee, together with the consent and release of GLO in respect thereof

          “GLO Contract” means that certain Energy Supply and Services Agreement dated as of
December 12, 2006, between GLO and REPS.

          “Governmental Authority” means the government of the United States of America, any
other nation or any political subdivision thereof, whether state, county, or local, and any agency,
authority, instrumentality, regulatory body, court, central bank, independent system operator,
transmission organization or other entity to the extent exercising executive, legislative,
judicial, taxing, monetary, regulatory, supervisory or administrative powers or functions of or
pertaining to government or the regulation of the Retail Energy Business, including Approved ISOs
and Approved Market Regulators in such capacities as regulators of their applicable markets.

          “Governmental Contract” means a contract for the purchase or sale of any retail
electric products or services between any Reliant Retail Obligor and a Governmental Customer.

          “Governmental Customer” means (a) any agency, authority, instrumentality, central
bank, independent system operator, transmission organization or other entity owned or controlled by
any Governmental Authority or (b) any Person that is or could be a Governmental Authority; in
either case, to the extent acting in a commercial capacity under a Governmental Contract, including
Approved ISOs and GLO in such capacities.

          “Guarantee” means a guarantee other than by endorsement of negotiable instruments for
collection in the ordinary course of business, direct or indirect, in any manner including by way
of a pledge of assets or through letters of credit or reimbursement agreements in respect thereof,
of all or any part of any Indebtedness (whether arising by virtue of partnership arrangements, or
by agreements to keep-well, to purchase assets, goods, securities or services, to take or pay or to
maintain financial statement conditions or otherwise; provided, that standard contractual
indemnities that do not relate to Indebtedness shall not be considered a Guarantee). The term
“Guarantee” as a defined verb has a corresponding meaning.

          “Guaranteed Obligations” has the meaning ascribed thereto in Section 11.01.

          “Hazardous Materials” means all explosive, flammable, corrosive or radioactive
substances or wastes and all hazardous, carcinogenic, mutagenic or toxic substances, wastes or
other pollutants, including petroleum or petroleum distillates, asbestos or asbestos-containing
materials, polychlorinated biphenyls, radon gas, infectious or medical wastes, toxic mold and all
other substances or wastes of any nature regulated pursuant to any Environmental Law.

          “Hedging Obligations” shall mean, with respect to any specified Person, the
obligations of such Person under (a) interest rate swap agreements (whether from fixed to floating
or from floating to fixed), interest rate cap agreements and interest rate collar agreements, (b)
other agreements or arrangements designed to manage interest rates or interest rate risk, (c) other
agreements or arrangements designed to protect such Person against fluctuations in currency
exchange rates and (d) agreements (including each confirmation entered

-18-

 

into pursuant to any master
agreement) providing for swaps, caps, collars, puts, calls, floors, futures, options, spots,
forwards, power purchase or sale agreements, fuel purchase or sale agreements, emissions credit
purchase or sales agreements, power transmission agreements, fuel transportation agreements, fuel
storage agreements, netting agreements, commercial or trading agreements, each with respect to, or
involving the purchase, transmission, distribution, sale, lease or hedge of, any energy, generation
capacity or fuel, or any other energy related commodity or service, price or price indices for any
such commodities or services or any other similar derivative agreements, and any other similar
agreements, in each case under clause (a), (b), (c) and (d), entered into by such Person.

          “ICE” means the IntercontinentalExchange, Inc. or its successor.

          “ICE Block Transaction” means, in respect of any ICE Exchange Traded Contract(s) held
by REPS, transactions between REPS and the Sleeve Provider, pursuant to which the Sleeve Provider
and REPS (a) execute a block trade entered into ICE in accordance with any applicable rules and
procedures, whereby Sleeve Provider takes the same net long or short position as that initially
held by REPS for the number of ICE Exchange Traded Contract(s) held by REPS at the volume weighted
average price at which REPS entered into such ICE Exchange Traded Contract(s) and (b) enter into
related Mirror ICE OTC Contracts.

          “Indebtedness” means, with respect to any specified Person, any indebtedness of such
Person (excluding accrued expenses or trade payables), whether or not contingent (without
duplication):

     (a) in respect of borrowed money;

     (b) evidenced by bonds, notes, debentures or similar instruments or letters of credit
or reimbursement agreements in respect thereof;

     (c) in respect of banker’s acceptances;

     (d) representing Capital Lease Obligations or Attributable Debt in respect of sale and
leaseback transactions, Synthetic Lease Obligations or financing leases;

     (e) representing the balance deferred and unpaid of the purchase price of any property
or services due more than six months after such property is acquired or such services are
completed;

     (f) representing any Interest Hedging Obligations; or

     (g) consisting of Disqualified Stock;

whether or not any of the preceding items appear as a liability upon a balance sheet of the
specified Person prepared in accordance with GAAP. In addition, the term “Indebtedness”
includes all Indebtedness of others secured by a Lien on any asset of the specified Person (whether
or not such Indebtedness is assumed by the specified Person) and, to the extent not otherwise
included, the Guarantee by the specified Person of any Indebtedness of any other Person. The
amount of any Indebtedness outstanding as of any date will be:

-19-

 

     (i) the accreted value of the Indebtedness, in the case of any Indebtedness issued with
original issue discount;

     (ii) the principal amount of and premium (if any) on the Indebtedness, in the case of
any other Indebtedness;

     (iii) in respect of Indebtedness of other Persons secured by a Lien on the assets of
the specified Person, the lesser of:

     (A) the Fair Market Value of such asset at such date of determination, and

     (B) the amount of such Indebtedness of such other Persons; and

          (iv) in respect of any Guarantee, an amount equal to the stated or determinable amount
of the related primary obligation, or portion thereof, in respect of which such Guarantee is
made or, if not stated or determinable, the maximum reasonably anticipated liability in
respect thereof as determined by the guaranteeing Person in good faith.

          “Information Technology Systems” means all information technology systems used in the
operation of the Retail Energy Business including hardware, software, middleware, tools, databases,
technical and business information, know-how or other data or information, related documents,
registrations and franchises, licenses or leases for any of the foregoing and all license rights
and all additions, improvements, enhancements and accessions thereto, and books and records
describing or used in connection with any of the foregoing.

          “Initial Effective Date” means December 1, 2006.

          “Initial Contribution” has the meaning ascribed thereto in the Parent Contribution
Agreement.

          “Intercompany Cash Management Agreement” means the Intercompany Cash Management
Agreement dated as of the Initial Effective Date among RERH Holdings and its Subsidiaries.

          “Interest Hedging Obligations” means, with respect to any specified Person, the net
obligations of such Person under:

     (a) interest rate swap agreements (whether from fixed to floating or from
floating to fixed), interest rate cap agreements and interest rate collar
agreements;

     (b) other agreements or arrangements designed to manage interest rate risk; and

     (c) other agreements or arrangements designed to protect such Person against
fluctuations in currency exchange rates.

-20-

 

          “Investment” means, with respect to any Person, all direct or indirect investments by
such Person in other Persons (including Affiliates) in the forms of loans (including Guarantees or
similar obligations), advances or capital contributions (excluding payroll, commission, travel and
similar advances to directors, officers and employees made in the ordinary course of business),
purchases or other acquisitions for consideration of Indebtedness, Equity Interests or other
securities, together with all items that are or would be classified as investments on a balance
sheet prepared in accordance with GAAP. “Investment” shall exclude extensions of trade credit or
posting of cash collateral by the Reliant Retail Obligors and each of their Subsidiaries in the
ordinary course of business. The acquisition by the Reliant Retail Obligors or their Subsidiaries
of a Person that holds an Investment in a third Person will be deemed to be an Investment by such
Reliant Retail Obligor or such Subsidiary in such third Person in an amount equal to the Fair
Market Value of the Investments held by the acquired Person in such third Person. Except as
otherwise provided in this Agreement, the amount of an Investment shall be its Fair Market Value at
the time the Investment is made and without giving effect to subsequent changes in value.

          “Investment Grade Rating” means a Credit Rating equal to or higher than Baa3 (or the
equivalent) by Moody’s and BBB- (or the equivalent) by S&P.

          “IP License Agreement” means the IP Cross License Agreement dated as of the Third A&R
Date between REI, RERH and the IT Trust, or any replacement or successor agreement approved by the
Merrill Parties.

          “IP Trust” means the Reliant Energy Trademark Trust, a Delaware statutory trust, or
any replacement or successor trust formed for a similar purpose and approved by the Merrill
Parties.

          “IT Service Agreement” means the IT Service Agreement dated as of the Initial
Effective Date between IT Trust and one or more of the Reliant Retail Obligors, or any replacement
or successor agreement, or any similar agreement between one or more of the Reliant Retail Obligors
and the NRG IT Trust, in each case, approved by the Merrill Parties.

          “IT Trust” means the RRI Energy IT Trust, a Delaware statutory trust.

          “IT Trust Management Agreement” means the IT Trust Management Agreement dated as of
the Initial Effective Date between REI and IT Trust, or any replacement or successor agreement, or
any similar agreement between NRG Parent (or an Affiliate of NRG Parent) and the NRG IT Trust, in
each case, approved by the Merrill Parties.

          “IT Trust Transfer and Allocation Plan” means a detailed written plan in form, scope
and substance satisfactory to the Sleeve Provider outlining in detail, among other things, the
proposed allocation of assets held in the IT Trust on the Third A&R Date between REI and its
Subsidiaries, on the one hand and the Reliant Retail Obligors, on the other hand, including, (a)
the manner of transfer, (b) the timing of transfer, (c) the third-party consents required to be
obtained in connection with the transfer and (d) such other information as MLCI may reasonably
request, as such plan may be modified and supplemented from time to time with the consent of the
Sleeve Provider.

-21-

 

          “Joinder Agreement” means a Joinder Agreement in the form of Exhibit G or in
such other form as REPS and the Merrill Parties may agree executed pursuant to Section
6.11(a)(i) in connection with a Subsidiary of RERH Holdings becoming an “Other Reliant Retail
Obligor” hereunder.

          “Law” means, as to any Person, any law, rule, regulation, ordinance or treaty, or any
determination, ruling or other directive by or from a court, arbitrator or other Governmental
Authority, including ERCOT, in each case applicable to or binding on such Person or any of its
property or assets or to which such Person or any of its property or assets is subject.

          “Level I Violation”, “Level II Violation” or “Level III Violation” means a violation
relating to the Risk Management Policy, described as such in Schedule 1.01(a), with respect
to Approved Markets.

          “Lien” means, with respect to any asset, any mortgage, lien, pledge, charge, security
interest or encumbrance of any kind in respect of such asset, whether or not filed, recorded or
otherwise perfected under applicable law, including any conditional sale or other title retention
agreement and any lease that constitutes a security interest.

          “Loans” means (i) the loans made by the Working Capital Facility Provider to REPS
under, and in accordance with, the Working Capital Facility and (ii) the loans made by Replacement
Working Capital Providers to REPS under, and in accordance with, any Replacement Working Capital
Facilities.

          “Make-whole Payment” has the meaning ascribed thereto in Section 3.05.

          “Margin Stock” means “margin stock” within the meaning of Regulations T, U and X of
the Federal Reserve Board.

          “Marks” means all trade names, trademarks and service marks, logos, trademark and
service mark registrations used by the Reliant Retail Obligors in the Retail Energy Business,
including those set forth on Schedule 1.01(e), and all related applications for trademark
and
service mark registrations, including all renewals of trademark and service mark
registrations, all rights to recover for all past, present and future infringements thereof and all
rights to sue therefor, and all rights corresponding thereto throughout the world, as are necessary
to operate the Retail Energy Business using the “Reliant” name consistent with the arrangements in
place for the Retail Energy Business as of the Third A&R Date.

          “Market Information” means market information such as price curves, volatilities,
interest rates and similar information for which quotes are customarily available from reference
market makers.

          “Master Separation Agreement” has the meaning ascribed thereto in the Purchase and
Sale Agreement.

          “Material Adverse Effect” means a material adverse effect upon (a) the business,
operations, property or financial condition of RERH Holdings and its Subsidiaries taken as a whole;
or (b) the validity or enforceability against any of RERH Holdings or any of its

-22-

 

Subsidiaries of
any Transaction Document to which it is a party or the material rights and remedies of the Sleeve
Provider thereunder.

          “Maximum Permitted Exposure” means, for any month, the “Maximum Permitted Exposure”
set forth on the ESDS for such month.

          “Merrill Collateral” or “ML Collateral” has the meaning ascribed thereto in
Section 3.01.

          “Merrill Parties” means the Sleeve Provider and the ML Guarantee Provider.

          “Mirror ICE OTC Contract” means, in respect of any ICE Exchange Traded Contract(s),
the over-the-counter swap leg of the related ICE Block Transaction or the swap that corresponds to
the ICE cleared swap contract transferred pursuant to Section 2.03(a) in each case between
REPS and the Sleeve Provider (executed under the MLCI/REPS ISDA), (i) in which REPS takes the same
net long or short position it took in the related ICE Exchange Traded Contract(s); (ii) that
settles on the industry standard settlement date applicable to such Accepted Product; (iii) that
has a price per unit equal to the price of the ICE Exchange Traded Contract(s) leg of the ICE Block
Transaction or the price of the ICE cleared swap contract transferred pursuant to Section
2.03(a); and (iv) that has a volume equal to the related Adjusted Volume.

          “Mirror NYMEX OTC Contract” means, in respect of any NYMEX Exchange Traded Contracts,
the over-the-counter swap leg of the related EFS Transaction or EOO Transaction or the swap that
corresponds to the ex-pit transfers made pursuant to Section 2.03(a) in each case between
REPS and the Sleeve Provider (executed under the MLCI/REPS ISDA), (i) in which REPS takes the same
net long or short position it held in the related Exchange Traded Contracts; (ii) that settles on
the industry standard settlement date applicable to such Accepted Product; (iii) that has a price
or strike per unit equal to the price or strike of the futures or option leg of the EFS Transaction
or EOO Transaction or the price or strike of the future or option transferred pursuant to
Section 2.03(a); and (iv) that has a volume equal to the related Adjusted Volume.

          “Mirror OTC Contract” means any Mirror ICE OTC Contract or Mirror NYMEX OTC Contract.

          “ML&Co.” means Merrill Lynch & Co., Inc., a Delaware corporation.

          “MLCI” means Merrill Lynch Commodities, Inc., a Delaware corporation.

          “ML Equivalent Credit Rating” means “A” and “A2” by S&P and Moody’s, respectively,
provided that if the Credit Rating for the ML Guarantee Provider by S&P or Moody’s, respectively,
is lower, then the actual S&P or Moody’s Credit Rating of the ML Guarantee Provider, respectively,
shall apply.

          “ML Guarantee” means a guarantee by the ML Guarantee Provider (i) in substantially the
form of Exhibit A1 with respect to Accepted Counterparties or Exhibit A2 with
respect to C&I Customers, (ii) in substantially the form of Exhibit A2 with respect to
Governmental Customers and Governmental Authorities that do not have requirements with

-23-

 

respect to
the forms of guarantees received or in such other form of guarantee as is required by the
applicable Governmental Customer or Governmental Authority and is reasonably acceptable to the
Merrill Parties, and (iii) in such other form as REPS and the Merrill Parties may agree.

          “ML Guarantee Provider” means ML&Co.

          “MLCI/REPS ISDA” means the ISDA 2002 Master Agreement dated the Initial Effective Date
between the Sleeve Provider and REPS.

          “ML/REI Letter Agreement” means that certain letter dated as of the Signing Date from
REI and accepted and agreed to by the Merrill Parties, relating to the transactions contemplated
hereby.

          “Moody’s” shall mean Moody’s Investors Service, Inc. or if such company shall cease to
issue ratings, another nationally recognized rating company selected in good faith by mutual
agreement of the Sleeve Provider and REPS.

          “Monthly Payment Date” means, in respect of any month, the date two Business Days
after the first day of such month.

          “Monthly Sleeve Fee” means, in respect of any month, the “Monthly Sleeve Fee” for such
month set forth on the Fee Schedule; provided that following the declaration of an Unwind Start
Date by REPS in accordance with Section 9.02(a), the Monthly Sleeve Fee for any month shall
equal (i) the “Monthly Sleeve Fee” for such month set forth on the Fee Schedule multiplied by (ii)
the Sleeve Adjustment Factor.

          “Multiemployer Plan” means a multiemployer plan defined as such in Section 3(37) of
ERISA to which contributions have been made, or have been required to be made, by RERH Holdings or
any ERISA Affiliate and that is covered by Title IV of ERISA.

          “MWh” means a megawatt hour of energy.

          “MW” means one million watts.

          “Notice Date” has the meaning ascribed thereto in Section 3.02.

          “NRG Collateral Trust Agreement” shall mean the Collateral Trust Agreement dated as of
February 2, 2006, between NRG Parent, certain Subsidiaries thereof, Deutsche Bank Trust Company
Americas, as Collateral Trustee and the other parties thereto.

          “NRG IT Trust” means the NRG Retail IT Trust, a Delaware statutory trust.

          “NRG IT Trust Agreement” means the IT Trust Agreement dated as of the Third A&R Date
among RERH, NRG Parent and Wilmington Trust Company.

          “NRG/ML Letter Agreement” means the letter agreement dated as of the Signing Date from
NRG Parent and accepted and agreed to by the Merrill Parties, relating to the transactions
contemplated hereby.

-24-

 

          “NRG Parent” means NRG Energy, Inc., a Delaware corporation.

          “NRG Parent Credit Agreement” means the Second Amended and Restated Credit Agreement
dated as of June 8, 2007 between NRG Parent, Citicorp North America Inc., as Administrative Agent,
and the lenders and other Persons party thereto, as amended, restated and otherwise modified from
time to time.

          “NRG Parent Consent and Agreement” means the Consent and Agreement dated as of the
Third A&R Date made by NRG Parent for the benefit of the Collateral Trustee and the Secured
Counterparties pertaining to the NRG Parent Services Agreement.

          “NRG Parent Services Agreement” means the Master Services Agreement dated as of the
Third A&R Date among NRG Parent on one hand, and RERH Holdings and its Subsidiaries, on the other
hand.

          “NRG Power Purchase Agreements” means, collectively, the PMI/REPS RW ISDA and the
PMI/REPS STANDARD ISDA.

          “NYMEX” means the New York Mercantile Exchange or its successor.

          “Obligations” means any amounts, principal, interest, premium, fees, indemnifications,
reimbursements, expenses, damages and other liabilities payable under the applicable documentation.

          “Obligee Guarantor” has the meaning ascribed thereto in Section 11.06.

          “Offsetting Trades” means the over-the-counter positions listed on Part A of
Schedule 12.17.

          “Organizational Documents” means, (a) with respect to any corporation, the certificate
or articles of incorporation and the bylaws (or equivalent or comparable constitutive
documents with respect to any non-U.S. jurisdiction); (b) with respect to any limited
liability company, the certificate or articles of formation or organization and operating
agreement; and (c) with respect to any partnership, joint venture, trust or other form of business
entity, the partnership, joint venture or other applicable agreement of formation or organization
and any agreement, instrument, filing or notice with respect thereto filed in connection with its
formation or organization with the applicable Governmental Authority in the jurisdiction of its
formation or organization and, if applicable, any certificate or articles of formation or
organization of such entity.

          “Other Reliant Retail Obligors” means each of RERH Holdings, RERH, RERS, RERR and any
other Subsidiaries of RERH Holdings and, in each case, their respective successors and assigns.

          “Parent Contribution Agreement” means the Contingent Contribution Agreement dated as
of the Third A&R Date between NRG Parent, the Sleeve Provider and RERH Holdings.

          “Party” has the meaning ascribed thereto in the preamble to this Agreement.

-25-

 

          “PBGC” means the Pension Benefit Guaranty Corporation or any entity succeeding to any
or all of its functions under ERISA.

          “Pension Plan” means any “employee pension benefit plan” (as such term is defined in
Section 3(2) of ERISA), other than a Multiemployer Plan, that is subject to Title IV of ERISA and
is sponsored or maintained by RERH Holdings or any ERISA Affiliate or to which RERH Holdings or any
ERISA Affiliate contributes or has an obligation to contribute or with respect to which RERH
Holdings or any ERISA Affiliate has any direct or contingent liability, or in the case of a
multiple employer or other plan described in Section 4064(a) of ERISA, has made contributions at
any time during the immediately preceding five plan years.

          “Permitted Investments” means:

     (a) (1) any Investment by a Reliant Retail Obligor in any other Reliant Retail Obligor;

     (b) any Investment in Cash Equivalents, the Collateral Accounts and under the
Intercompany Cash Management Agreement;

     (c) any Investment (other than an Investment in Capital Stock) made as a result of the
receipt of non-cash consideration from an Asset Sale that was made pursuant to and in
compliance with the provisions of Section 7.05;

     (d) any Investments received in compromise or resolution of (A) Obligations of trade
creditors or customers that were incurred in the ordinary course of business of the Reliant
Retail Obligors, including pursuant to any plan of reorganization or similar arrangement
upon the bankruptcy or insolvency of any trade creditor or customer; or (B) litigation,
arbitration or other disputes with Persons who are not Affiliates;

     (e) loans or advances to directors, officers and/or employees made in the ordinary
course of business up to an aggregate principal amount not to exceed $2,000,000 at any one
time;

     (f) any Investment acquired by any Reliant Retail Obligor on account of any claim
against, or interest in, any other Person (A) acquired in good faith in connection with or
as a result of a bankruptcy, workout, reorganization or recapitalization of such other
Person or (B) as a result of a bona fide foreclosure by any Reliant Retail Obligor with
respect to any claim against any other Person;

     (g) receivables owing to any Reliant Retail Obligor, if created or acquired in the
ordinary course of business and payable or dischargeable in accordance with customary trade
terms; provided that such trade terms may include such concessionary trade terms as such
Reliant Retail Obligor deems reasonable under the circumstances;

     (h) other Investments otherwise not prohibited in accordance with this Agreement;
provided that the aggregate outstanding amount of Investments under this clause (h) shall
not exceed $2,000,000 at any time outstanding;

-26-

 

     (i) Investments in Hedging Obligations, including but not limited to Power and Hedging
Contracts and Interest Hedging Obligations, to the extent not otherwise prohibited
hereunder; and

     (j) Investments of RERH Holdings and its Subsidiaries on the Signing Date listed on
Schedule 1.01(g).

          With respect to all of the foregoing Permitted Investments in Subsidiaries of RERH Holdings
that are not Reliant Retail Obligors, such Investments are subject to compliance with Section
6.11(a).

          “Permitted Liens” means:

     (a) Liens under the Collateral Trust Agreement or otherwise securing the Credit Sleeve
Obligations and Working Capital Obligations;

     (b) Liens in favor of the Reliant Retail Obligors;

     (c) Liens for taxes, assessments or governmental charges or claims that are not yet
delinquent or that are being contested in good faith by appropriate proceedings promptly
instituted and diligently concluded; provided that any reserve or other appropriate
provision as is required in conformity with GAAP has been made therefore;

     (d) Liens imposed by law, such as carriers’, warehousemen’s, landlord’s and mechanics’
and other similar Liens or to secure other statutory obligations, in each case, incurred in
the ordinary course of business;

     (e) Liens in the form of survey exceptions, encumbrances, easements or reservations,
including those for licenses, rights-of-way, sewers, electric lines, telegraph
and telephone lines, other utilities, mineral reservations and rights and leases,
zoning restrictions and other restrictions as to the use of real property or other
exceptions to title that were not incurred in connection with Indebtedness and that do not
in the aggregate materially adversely affect the value of said properties or materially
impair their use in the operation of the business of such Person;

     (f) Liens securing Indebtedness incurred pursuant to clause (f) of Section
7.03, covering only the assets acquired with or financed by such Indebtedness;

     (g) Liens in the form of financing statements (including precautionary statements)
filed in connection with a Capital Lease Obligation, financing lease or an operating lease,
in each case, not prohibited hereunder; provided, that no such financing statement extends
to, covers or refers to as collateral, any property or assets of RERH or its Subsidiaries,
other than the property or assets which are subject to such Capital Lease Obligation,
financing lease or operating lease;

     (h) Liens arising out of or in connection with any judgment that does not constitute a
Reliant Event of Default or in connection with any litigation or other legal proceeding as
to which an appeal to contest or review is timely commenced in good faith

-27-

 

by appropriate
proceedings and as to which adequate reserves have been established in accordance with GAAP;
provided, that any right to levy, seizure, attachment, sequestration, foreclosure or
garnishment of any property and assets of a Reliant Retail Obligor arising out of or in
connection with any such Lien has been and continues to be enjoined or effectively stayed;

     (i) Liens in the form of inchoate statutory Liens arising under ERISA;

     (j) Liens in the form of licenses to IP Rights under the IP License Agreement;

     (k) Liens granted during an Unwind Period in favor of a commercial trading counterparty
pursuant to a netting agreement, which Liens encumber rights under agreements that are
subject to such netting agreement and which Liens are granted by a Subsidiary of RERH
Holdings to secure such Subsidiary’s obligations to such counterparty under such netting
agreement; provided that any such agreements and netting agreements are entered into in the
ordinary course of business; and provided, further, that the Liens are incurred in the
ordinary course of business and when granted do not secure obligations which are past due;

     (l) Liens arising by virtue of any statutory or common law provision relating to
banker’s liens, rights of set off or similar rights, contractual rights of setoff or netting
arrangements entered into in the ordinary course of business and similar rights with respect
to deposit accounts, commodity accounts and/or securities accounts;

     (m) Liens arising under Section 9.343 of the Texas Uniform Commercial Code or similar
statutes of states other than Texas;

     (n) pledges and deposits to secure the payment of worker’s compensation, unemployment
insurance, social security benefits or obligations under similar laws, or to
secure the payment or performance of statutory or public obligations (including
environmental, municipal and public utility commission obligations and requirements),
reimbursement or indemnity obligations arising out of surety, performance, or other similar
bonds, and other obligations of a like nature, in each case incurred in the ordinary course
of business;

     (o) Liens (other than under the Collateral Trust Agreement) incurred in the ordinary
course of business of RERH Holdings or any Subsidiary of RERH Holdings securing obligations
that do not exceed $2,000,000 in the aggregate at any one time outstanding;

     (p) Liens in favor of any Replacement Sleeve Provider or Replacement Working Capital
Provider incurred during an Unwind Period and subject to the Collateral Trust Agreement;

     (q) Liens on assets of Reliant Energy Retail Services, LLC created in connection with
Delivery Order No. DABT39-97-C-4046 dated September 1997 and issued by the Directorate of
Contracting, Contract Support Division, Ft. Sill, Oklahoma (as more completely described in
Schedule 7.14);

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     (r) Liens on assets or securities granted or deemed to arise in connection with and
solely as a result of the execution, delivery or performance of contracts to purchase or
sell such assets or securities if such purchase or sale is otherwise permitted hereunder;
and

     (s) Liens on assets of RERH Holdings or any of its Subsidiaries existing on the Signing
Date listed on Schedule 1.01(h).

          “Person” means any individual, corporation, firm, partnership, joint venture,
association, joint-stock company, trust, unincorporated organization, limited liability company or
government or other entity.

          “Plan” means any “employee benefit plan” (as such term is defined in Section 3(3) of
ERISA) established by RERH Holdings or its Subsidiaries or with respect to which RERH Holdings or
its Subsidiaries could have any direct or contingent liability or, with respect to any such plan
that is subject to Section 412 of the Code, or Title IV of ERISA, any such plan established by an
ERISA Affiliate.

          “PMI” means NRG Power Marketing LLC.

          “PMI/REPS EEI” means the EEI Master Agreement dated as of December 1, 2006 between PMI
and REPS.

          “PMI/REPS RW ISDA” means ISDA 2002 Master Agreement (Right-Way) dated as of the Third
A&R Date between PMI and REPS.

          “PMI/REPS STANDARD ISDA” means ISDA 2002 Master Agreement (Standard) dated as of the
Third A&R Date between PMI and REPS.

          “Posted Collateral” means, for any day, all cash collateral posted by the Reliant
Retail Obligors to the Merrill Parties under this Agreement, including in accordance with
Section 6.11(c)(xi) and Section 6.18, which as of such day has not been theretofore
been applied or used by the Merrill Parties to satisfy any Secured Obligation or otherwise returned
to REPS.

          “Post-Default Rate” means a per annum rate equal to the Base Rate (as in effect from
time to time) plus 11.00%.

          “Post-Unwind Start Date Transaction” means an Accepted Trade entered prior to the
Unwind Start Date in accordance with this Agreement under which the final delivery date, payment
date, or settlement date is scheduled to occur after the Unwind Start Date.

          “Power and Hedging Contract” means each over-the-counter master agreement between REPS
and an Accepted Counterparty providing for transactions regarding Accepted Products, and including
as part thereof the associated Credit Support Agreement, in each case, existing on the Third A&R
Date, the PMI/REPS RW ISDA, the PMI/REPS STANDARD ISDA and any other over-the-counter master
agreement between any Reliant Retail Obligor and an Accepted Counterparty entered into after the
Third A&R Date with the consent of the Sleeve Provider.

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          “Power Purchase Agreements” means, collectively, the Reliant Power Purchase Agreements
and the NRG Power Purchase Agreements.

          “Preferred Equity” means, collectively, each of (i) the Certificate of Designations of
NRG Parent, adopted December 14, 2004, with respect to 4.0% Convertible Perpetual Preferred Stock,
(ii) the Certificate of Designations of NRG Parent, adopted August 5, 2005, with respect to 3.625%
Convertible Perpetual Preferred Stock and (iii) the Certificate of Designations of NRG Parent,
adopted January 25, 2006, with respect to 5.750% Mandatory Convertible Preferred Stock.

          “Preliminary Exposure Report” has the meaning ascribed thereto in Schedule
1.01(c).19.

          “Prime Rate” means a fluctuating rate of interest equal to the rate of interest most
recently announced by the Wall Street Journal as the prime rate for Dollar-denominated loans.

          “Prohibited New C&I Contracts” means any C&I Contract that is entered into on or after
Third A&R Date, including any extension or rollover of any C&I Contract in existence as of the
Third A&R Date, except as provided in Schedule 1.01(i).

          “Properly Allocable” means with respect to any Allocable State Taxes the percentage of
the total tax (not in excess of 100 percent) which the tax of the Reliant Retail Obligors if
computed on a separate return would bear to the total amount of the taxes for all members of the
group so computed.

          “Projected Financial Statements” means the financial forecast (for the fiscal quarter
ending March 31, 2009 and each fiscal quarter of the two following calendar years) for
the Retail Energy Business of RERH Holdings and its Subsidiaries most recently delivered to
the Sleeve Provider prior to the date hereof.

          “PUCT” means the Public Utility Commission of Texas, or any successor thereto.

          “Purchase and Sale Agreement” has the meaning ascribed thereto in the introductory
paragraphs to this Agreement.

          “Qualified Institution” means a major U.S. commercial bank or a foreign bank with a
U.S. branch office with a Credit Rating of at least the ML Equivalent Credit Rating.

          “QSE” or “Qualified Scheduling Entity” means a market participant qualified by
ERCOT in accordance with the ERCOT protocols to submit schedules and settle payments with ERCOT.

          “Reaffirmation Agreement” means the Reaffirmation Agreement dated as of the Third A&R
Date, among the Reliant Retail Obligors, and the Collateral Trustee.

          “RECs” means renewable energy credits.

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          “RECS” means Reliant Energy Corporate Services, LLC, a Delaware limited liability
company.

          “REES” means Reliant Energy Electric Solutions, LLC, a Delaware limited liability
company.

          “REES/REPS Power Purchase Agreement” means the ISDA 2002 Master Agreement dated July
1, 2006, between REES and REPS, relating to (i) the confirmation thereunder outstanding on the
Initial Effective Date regarding certain third party agreements related to ERCOT other than “Upton
Wind,” and (ii) the confirmation thereunder outstanding on the Initial Effective Date regarding the
“Upton Wind” agreement.

          “REI” has the meaning ascribed thereto in the introductory paragraphs to this
Agreement.

          “Reimbursement Guarantors” means each of the Other Reliant Retail Obligors and their
respective successors and assigns.

          “Reimbursement Guaranty” means the guarantee of the Reimbursement Guarantors to repay
the Guaranteed Obligations in accordance with Section 11.

          “Reimbursement Obligations” means the Draw Reimbursement Obligations and the Deferred
Reimbursement Obligations.

          “Reliant Default” means any Default with respect to a Reliant Event of Default.

          “Reliant Event of Default” has the meaning ascribed thereto in Section 8.01.

          “Reliant Power Purchase Agreements” means the REES/REPS Power Purchase Agreement, the
RES/REPS Power Purchase Agreement and the REPS/RERS Power Purchase Agreement.

          “Reliant Retail Obligors” has the meaning ascribed thereto in the preamble to this
Agreement.

          “Remediation Plan” means a written report outlining the sequence of actions that the
Reliant Retail Obligors will take to address a Level III Violation and seek to prevent similar
Level III Violations from occurring in the future.

          “Replacement Sleeve Provider” means a counterparty or counterparties with a Credit
Rating, or a guarantor with a Credit Rating, that is equal to or better than the ML Equivalent
Credit Rating, and providing Accepted Products or credit support for the acquisition thereof to
RERH Holdings or any of its Subsidiaries during an Unwind Period.

          “Replacement Working Capital Facility” means a working capital facility or similar
facility provided by a Replacement Working Capital Provider (a) entered into during the Unwind
Period after the commitments under the Working Capital Facility shall have been permanently
terminated and the Working Capital Obligations have been paid in full (other than

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indemnities and
any similar obligations of the Reliant Retail Obligors not then due and payable that expressly
survive termination of the Working Capital Facility), (b) having available commitments that,
together with all other Replacement Working Capital Facilities then in effect, do not exceed
$50,000,000 on an aggregate basis, and (c) having terms, taken as a whole, no less restrictive than
the Working Capital Facility on the date of its termination.

          “Replacement Working Capital Provider” means a counterparty or counterparties with a
Credit Rating that is at least equal to the ML Equivalent Credit Rating and providing working
capital to RERH Holdings or any of its Subsidiaries under a Replacement Working Capital Facility.

          “REPS” has the meaning ascribed thereto in the preamble of this Agreement.

          “REPS/RERS Power Purchase Agreement” means the ISDA 2002 Master Agreement dated July
1, 2006, between REPS and RERS.

          “Required Equity Contribution” means any equity contribution required to be made by
NRG Parent to RERH Holdings in accordance with the Parent Contribution Agreement.

          “RERH” has the meaning ascribed thereto in the preamble to this Agreement.

          “RERH Holdings” has the meaning ascribed thereto in the preamble to this Agreement.

          “RERR” has the meaning ascribed thereto in the preamble to this Agreement.

          “RERS” has the meaning ascribed thereto in the preamble to this Agreement.

          “RES” means Reliant Energy Services, Inc., a Delaware corporation.

          “Residential Mass Customer” means any residential customer of the Reliant Retail
Obligors.

          “Responsible Officer” means the chief executive officer, president, chief financial
officer, treasurer or assistant treasurer of a Party and, in addition with respect to RERH
Holdings, any officer thereof that is also a vice president or more senior officer of NRG Parent
(excluding vice presidents in marketing). Any document delivered hereunder that is signed by a
Responsible Officer of a Party shall be conclusively presumed to have been authorized by all
necessary corporate, partnership and/or other action on the part of such Party and such Responsible
Officer shall be conclusively presumed to have acted on behalf of such Party.

          “Restricted Payment” means any of the following:

     (a) any declaration or payment of any dividend or the making of any other payment or
distribution on account of RERH Holdings’, or any of its Subsidiaries’ Equity Interests
(including any payment in connection with any merger or consolidation involving RERH
Holdings or any of its Subsidiaries) or to the direct or indirect holders of RERH Holdings’
or any of its Subsidiaries’ Equity Interests, in each case in their capacity

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as such, (other
than dividends or distributions payable in Equity Interests of RERH Holdings or to RERH
Holdings or any Other Reliant Retail Obligor);

     (b) any purchase, redemption or other acquisition or retirement for value (including in
connection with any merger or consolidation involving RERH Holdings) of any Equity Interests
of RERH Holdings; or

     (c) any payment on or with respect to, or purchase, redemption, defeasance or other
acquisition or retirement for value of any Indebtedness of RERH Holdings and its
Subsidiaries that is contractually subordinated to the Credit Sleeve Obligations (excluding
any intercompany Indebtedness, intercompany receivables or intercompany advances between or
among any of the Reliant Retail Obligors).

For the avoidance of any doubt, payments or distributions under the NRG Parent Services Agreement
are not Restricted Payments.

          “Retail Acquisition” has the meaning ascribed thereto in the introductory paragraphs
to this Agreement.

          “Retail Company Service Fee” has the meaning ascribed thereto in the NRG Parent
Services Agreement.

          “Retail Energy Business” means the business of providing Accepted Retail Products in
retail electricity markets in the United States and any businesses incidental or related thereto
and performing under the Transaction Documents and any activities incidental or related thereto.

          “Retail Letter Agreement” means that certain letter agreement dated as of the Third
A&R Date by and among NRG Retail and the Working Capital Facility Provider.

          “Retail Organizational Documents” means the Organizational Documents of each of the
Reliant Retail Obligors.

          “Retail Provided Services” has the meaning ascribed thereto in the NRG Parent Services
Agreement.

          “Risk Limit” means any of the limits specified in GEP Conversion and Limits, Hourly
Scheduled Energy, Natural Gas Basis, Power Average Daily Peak Contractual Load, or Power Basis, in
each case as such terms are defined in Section VII (ERCOT) of the Risk Management Policy.

          “Risk Limit Report” has the meaning ascribed thereto in Schedule 1.01(c).19.

          “Risk Management Event of Default” has the meaning ascribed thereto in Section
6.13.

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          “Risk Management Policy” means the “Reliant Energy – Retail Risk Policy” set forth in
Exhibit E1, as the same may be updated from time to time in accordance with Section
6.13.

          “S&P” means Standard & Poor’s Ratings Group (presently a division of The McGraw-Hill
Companies, Inc.), together with its successors, or, if such company shall cease to issue ratings,
another nationally recognized rating company selected in good faith by mutual agreement of the
Sleeve Provider and REPS.

          “Scheduled Term” means the period from the First Execution Date through November 1,
2010.

          “Scheduling Entity” means a market participant qualified by an Approved ISO or
Approved Market Regulator to submit schedules, settle payments and handle like matters within an
Approved Market, including, with respect to ERCOT, a QSE.

          “SEC” means the Securities and Exchange Commission or any Governmental Authority
succeeding to any of its principal functions.

          “Secured Obligations” has the meaning ascribed thereto in the Collateral Trust
Agreement.

          “Secured Counterparties” has the meaning ascribed thereto in the Collateral Trust
Agreement.

          “Security Agreement” means the Security Agreement dated as of the Initial Effective
Date among the Reliant Retail Obligors, and the Collateral Trustee.

          “Security Documents” shall mean (i) the Collateral Trust Agreement, the Security
Agreement, the NRG Parent Consent and Agreement, the Blocked Account Agreement, the Reaffirmation
Agreement (ii) each other security agreement, pledge agreement, mortgage, deed of trust, assignment
agreement, consent and agreement and other instrument being executed concurrently therewith or
herewith or from time to time hereafter pursuant to which a Lien has been granted by the Reliant
Retail Obligors in favor of the Collateral Trustee (for the benefit of the Secured Counterparties)
on any of their respective assets to secure any of the Secured Obligations, and (iii) any
intercreditor or like agreements related to any of the foregoing to which any Reliant Retail
Obligor, NRG Retail LLC or any of their respective Subsidiaries or NRG Parent, is a party. For the
avoidance of doubt, “Security Documents” will not include the NRG Collateral Trust Agreement.

          “Senior Note Documents” means any or all of the following:

     (a) The Base Indenture, dated as of February 2, 2006 (as amended, restated, modified or
otherwise in effect from time to time) (the “Base Indenture”), by and between the
NRG Energy, Inc. and Law Debenture Trust Company of New York, as trustee (the
“Trustee”);

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     (b) First Supplemental Indenture, dated as of February 2, 2006, by and among the NRG
Energy, Inc., the subsidiaries of the Company set forth on Schedule I attached thereto and
the Trustee, providing for the issuance of 7.250% Senior Notes due 2014;

     (c) Second Supplemental Indenture, dated as of February 2, 2006, by and among the NRG
Energy, Inc., the subsidiaries of the Company set forth on Schedule I attached thereto and
the Trustee, providing for the issuance of 7.375% Senior Notes due 2016;

     (d) Third Supplemental Indenture, dated as of March 14, 2006, by and among the NRG
Energy, Inc., the guarantors listed on the signature page thereto and the Trustee;

     (e) Fourth Supplemental Indenture, dated as of March 14, 2006, by and among the NRG
Energy, Inc., the guarantors listed on the signature page thereto and the Trustee;

     (f) Fifth Supplemental Indenture, dated as of April 28, 2006, by and among the NRG
Energy, Inc., the guarantors listed on the signature page thereto and the Trustee;

     (g) Sixth Supplemental Indenture, dated as of April 28, 2006, among the NRG Energy,
Inc., the guarantors listed on the signature page thereto and the Trustee;

     (h) Seventh Supplemental Indenture, dated November 13, 2006 among the NRG Energy, Inc.,
the guarantors listed on the signature page thereto and the Trustee;

     (i) Eighth Supplemental Indenture, dated November 13, 2006 among the NRG Energy, Inc.,
the guarantors listed on the signature page thereto and the Trustee;

     (j) Ninth Supplemental Indenture, dated as of November 21, 2006, by and among the NRG
Energy, Inc., the subsidiaries of the NRG Energy, Inc. set forth on Schedule I attached
thereto and the Trustee, providing for the issuance of 7.375% Senior Notes due 2017;

     (k) Tenth Supplemental Indenture, dated July 19, 2007 among the NRG Energy, Inc., the
guarantors listed on the signature page thereto and the Trustee;

     (l) Eleventh Supplemental Indenture, dated July 19, 2007 by and among the NRG Energy,
Inc., the guarantors listed on the signature page thereto and the Trustee;

     (m) Twelfth Supplemental Indenture, dated as of July 19, 2007 among the NRG Energy,
Inc., the subsidiaries of the Company set forth on Schedule I attached thereto and the
Trustee;

     (n) Thirteenth Supplemental Indenture, dated as of August 28, 2007 among the NRG
Energy, Inc., the guarantors listed on the signature page thereto and the Trustee;

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     (o) Fourteenth Supplemental Indenture, dated as of August 28, 2007, by and among the
NRG Energy, Inc., the guarantors listed on the signature page thereto and the Trustee;

     (p) Fifteenth Supplemental Indenture, dated as of August 28, 2007 , by and among the
NRG Energy, Inc., the subsidiaries of the Company set forth on Schedule I attached thereto
and the Trustee; and

     (q) Any other supplemental indenture issued pursuant to the Base Indenture.

          “Senior Notes” shall mean each note issued pursuant to the Senior Note Documents.

          “Significant Subsidiary” has the meaning ascribed thereto in the Parent Contribution
Agreement.

          “Signing Date” means February 28, 2009.

          “Sleeve Adjustment Factor” means, as of any ESDS Calculation Date, the ratio of (i)
the total contracted volume of the Reliant Retail Obligors’ power and gas positions for all
Accepted Trades supported by the Merrill Parties over (ii) the sum of (a) the total
contracted volumes of the Reliant Retail Obligors’ power and gas positions supported by the Merrill
Parties plus (b) the total contracted volumes of the Reliant Retail Obligors’ power and gas
positions supported by a Replacement Sleeve Provider, in each case, as of such ESDS Calculation
Date.

          “Sleeve Provider” has the meaning ascribed thereto in the title paragraph hereto.

          “Sleeve Provider Event of Default” has the meaning ascribed thereto in Section
8.02.

          “Sleeve Provider Default” means any Default with respect to Sleeve Provider Event of
Default.

          “Solvent” and “Solvency” mean, with respect to any Person on any date of
determination, that on such date (i) the fair value of the property of such Person is greater than
the total amount of liabilities, including contingent liabilities, of such Person, (ii) the present
fair salable value of the assets of such Person is not less than the amount that will be required
to pay the probable liability of such Person on its debts as they become absolute and matured,
(iii) such Person does not intend to, and does not believe that it will, incur debts or liabilities
beyond such Person’s ability to pay such debts and liabilities as they mature and (iv) such Person
is not engaged in business or a transaction, and is not about to engage in business or a
transaction, for which such Person’s property would constitute an unreasonably small capital. The
amount of contingent liabilities at any time shall be computed as the amount that, in the light of
all the facts and circumstances existing at such time, represents the amount that can reasonably be
expected to become an actual or matured liability; provided that if the context in which “Solvent”
or “Solvency” is used refers to a Person together with its Subsidiaries, Person as used above shall
be deemed to be a reference to such Person together with its Subsidiaries.

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          “Specified Transaction” means, with respect to any Person (i) any prepaid forward sale
of energy, oil, gas or minerals by such Person that is intended primarily as a borrowing of funds,
excluding volumetric production payments, and (ii) any interest rate, currency, commodity or other
swap, collar, cap, option or other derivative that is intended primarily as a borrowing of funds,
or any combination of any of the foregoing, with the amount of the obligations of such Person
thereunder being the net obligations of such Person thereunder.

          “State Tax Distribution Amount” means with respect to any Allocable State Taxes, on
any date of determination, the excess of (a) the cumulative amounts, for periods beginning on or
after the Third A&R Date, of Allocable State Taxes Properly Allocable to the Reliant Retail
Obligors as shown on tax returns relating thereto (and reflecting any adjustments thereto agreed
upon with applicable Governmental Authorities or as determined by courts of competent
jurisdiction), over (b) amounts previously distributed pursuant to Section 6.11(c)(ii) of
this Agreement.

          “Stated Maturity” means, with respect to any installment of interest or principal on
any series of Indebtedness, the date on which the payment of interest or principal was scheduled to
be paid in the documentation governing such Indebtedness as of the Third A&R Date, and shall not
include any contingent obligations to repay, redeem or repurchase any such interest or principal
prior to the date originally scheduled for the payment thereof.

          “Sublease “ means the Sublease Agreement dated as of the Initial Effective Date
between Reliant Energy Corporate Services, LLC, a Delaware limited liability company, as Sublessor,
and RERR, as Sublessee.

          “Subsidiary” of a Person means a corporation, partnership, joint venture, limited
liability company or other business entity of which a majority of the shares of securities or other
interests having ordinary voting power for the election of directors or other governing body (other
than securities or interests having such power only by reason of the happening of a
contingency) are at the time beneficially owned, or the management of which is otherwise
controlled, directly, or indirectly through one or more intermediaries, or both, by such Person.

          “Synthetic Lease Obligation” means the monetary obligation of a Person under a
so-called synthetic, off-balance sheet or tax retention lease.

          “Target Exposure” means, for any day, the “Target Exposure” set forth on the
ESDS for the date on or most recently preceding such day.

          “Tax Code” means Title 26 of the United States Code (Internal Revenue), 26 U.S.C.
Section 1 et seq.

          “Tax Subordination Agreement” means the Tax Subordination Agreement dated as of the
Third A&R Date made by NRG Parent and the Reliant Retail Obligors for the benefit of the Merrill
Parties and the Working Capital Facility Provider.

          “TDSP” means a transmission or distribution service provider.

          “Term” has the meaning ascribed thereto in Section 2.06.

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          “Third A&R Date” has the meaning ascribed thereto in the preamble to this Agreement.

          “Transaction Documents” means (i) this Agreement, (ii) the Working Capital Facility,
(iii) the Security Documents, (iv) the Parent Contribution Agreement, (v) the Retail Organizational
Documents, (vi) the NRG Parent Services Agreement, (vii) the NRG Power Purchase Agreements, (viii)
[intentionally deleted], (ix) the Transition Services Agreement, (x) NRG/ML Letter Agreement, (xi)
[intentionally deleted], (xii) Mirror OTC Contracts, (xiii) the IP License Agreement, (xiv) the IT
Trust Transfer and Allocation Plan, (xv) [intentionally deleted], (xvi) the IT Service Agreement,
(xvii) the IT Trust, (xviii) the IT Trust Management Agreement, (xix) NRG IT Trust, (xx) the
Exclusivity and Fee Letter, (xxi) the Tax Subordination Agreement, (xxii) the Sublease, and (xxiii)
any other contract or agreement (including ISDA Master Agreements, but excluding any Credit Support
Agreements) between any Merrill Party or its Affiliates, on one hand, and any Reliant Retail
Obligor or its Affiliates, on the other hand, relating to the transactions contemplated hereby.

          “Transition Services Agreement” means the Transition Services Agreement dated as of
the Third A&R Date among NRG Parent, REI, and the Reliant Retail Obligors, with respect to certain
interim employment matters, intellectual property and information technology matters and other
interim matters related to the Reliant Retail Obligors.

          “Transition End Date” has the meaning ascribed thereto in Section 6.19.

          “Transition Period” means the period from the Transition Start Date through the
Transition End Date.

          “Transition Start Date” means the date 90 days prior to the last day of the Scheduled
Term.

          “UCC” means the Uniform Commercial Code as in effect from time to time in the State of
New York and (solely with respect to the perfection or priority of any Lien in personal property or
fixtures or control over Collateral that constitutes personal property or fixtures) the Uniform
Commercial Code as in effect from time to time in the jurisdiction that governs such perfection,
priority or control (as applicable), provided that, for purposes of each Security Document in which
the term “UCC” is separately defined, “UCC” has the meaning assigned to such term in such Security
Document.

          “Unaudited Financial Statements” means the unaudited consolidated balance sheet of
RERH Holdings and its consolidated Subsidiaries as at the end of the Fiscal Quarter ended March 31,
2009, and the related unaudited consolidated statements of income or operations for such Fiscal
Quarter and cash flows for the Fiscal Quarter then ended, including normal year-end adjustments and
without comparisons to prior periods.

          “Unfunded Pension Liability” means the failure of a Pension Plan to satisfy the
minimum funding standard applicable to such Pension Plan for any plan year, as determined in
accordance with Section 412 of the Code.

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          “Unrestricted Subsidiary” has the meaning ascribed thereto in the Parent Contribution
Agreement.

          “Unwind Conclusion Date” means, with respect to any Unwind Start Date, the Credit
Sleeve Termination Date.

          “Unwind Period” means the period from the Unwind Start Date through the Unwind
Conclusion Date.

          “Unwind Start Date” means the earliest of (a) the date for the beginning of an Unwind
Period declared by the Sleeve Provider in connection with a Reliant Event of Default in accordance
with Section 9.01(a), (b) the date for the beginning of an Unwind Period declared by REPS
in accordance with Section 2.06(b), and (c) the date for the beginning of an Unwind Period
declared by REPS in connection with a Sleeve Provider Event of Default in accordance with
Section 9.02(a).

          “Upton Wind Side Letter” means the letter agreement regarding the “Upton Wind”
agreement dated as of the Third A&R Date, by and among REPS, REI and the Sleeve Provider.

          “Voting Stock” of any Person as of any date means the Capital Stock of such Person
that is at the time entitled to vote in the election of the Board of Directors of such Person.

          “Wholly Owned Subsidiary” of any specified Person means a Subsidiary of such Person
all of the outstanding Capital Stock or other ownership interests of which (other than directors’
qualifying shares) is owned by such Person or by one or more other Wholly Owned Subsidiaries of
such Person.

          “Working Capital Adjustment Amount” means, on any date of determination, the excess of
(a) the cumulative amount, for periods beginning on or after the Third A&R Date, of
all payments due and payable to REI in accordance with Section 7.13 of the Purchase and Sale
Agreement, over (b) the aggregate amount previously distributed pursuant to Section
6.11(c)(x) of this Agreement.

          “Working Capital Facility” means the Working Capital Facility dated as of September
01, 2006, as amended and restated as of the Third A&R Date, among Working Capital Facility
Provider, as Lender, REPS, as Borrower, and the Other Reliant Retail Obligors, as Guarantors.

          “Working Capital Facility Provider” means Merrill Lynch Capital Corporation, a
Delaware corporation.

          “Working Capital Obligations” mean the Obligations of the Reliant Retail Obligors
under the Working Capital Facility.

          “Work Plan” means a written report outlining a series of actions that the Reliant
Retail Obligors will take to develop a Remediation Plan.

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          1.02. Terms Generally. The definitions of terms herein shall apply equally to the singular
and plural forms of the terms defined. Whenever the context may require, any pronoun shall include
the corresponding masculine, feminine and neuter forms. The words “include”, “includes” and
“including” shall be deemed to be followed by the phrase “without limitation”. The word “will”
shall be construed to have the same meaning and effect as the word “shall”. Unless the context
requires otherwise (a) any definition of or reference to any agreement, instrument or other
document herein shall be construed as referring to such agreement, instrument or other document as
from time to time amended, restated, supplemented or otherwise modified, renewed or replaced
(subject to any restrictions on such amendments, restatements, supplements or modifications,
renewals or replacements set forth therein or herein), (b) references to any law, constitution,
statute, treaty, regulation, rule or ordinance, including any section or other part thereof (each,
for purposes of this Section 1.02, a “law”) shall refer to that law as amended from
time to time and shall include any successor law, (c) any reference herein to any Person shall be
construed to include such Person’s successors and permitted assigns, (d) the words “herein”,
“hereof” and “hereunder”, and words of similar import, shall be construed to refer to this
Agreement in its entirety and not to any particular provision hereof and (e) all references herein
to Sections, Exhibits and Schedules shall be construed to refer to Sections of, and Exhibits and
Schedules to, this Agreement.

          1.03. Accounting Terms and Determinations. Unless otherwise specified herein, all
accounting terms used herein shall be interpreted, all determinations with respect to accounting
matters hereunder shall be made, and all financial statements and certificates and reports as to
financial matters required to be furnished to the Sleeve Provider hereunder shall be prepared in
accordance with GAAP, applied on a basis consistent with that used in the financial statements
referred to in Section 5.05.

          Section 2. Credit Sleeve for Reliant Retail Obligors

          2.01. Credit Sleeve Generally; Exclusivity (a) Commitment of Merrill Parties.
From and after the Third A&R Date and during the remainder of the Term, and otherwise subject to
and in accordance with the terms and conditions of this Agreement (including Sections 2.04
and 2.05), at the request of REPS from time to time, subject to the proviso below, the
Merrill Parties shall:

     (i) cause the ML Guarantee Provider to perform under ML Guarantees in respect of REPS’
obligations under the Power and Hedging Contracts, including Credit Support Agreements, and
prevent any events of default or termination events relating solely to the ML Guarantee
Provider as a credit support provider under such Power and Hedging Contracts, including the
related Credit Support Agreements;

     (ii) cause the Sleeve Provider to perform under Credit Support Agreements providing
credit support for the obligations under the Power and Hedging Contracts, and prevent any
events of default or termination events relating solely to the Sleeve Provider as a credit
support provider under the Credit Support Agreements related to the Power and Hedging
Contracts;

     (iii) cause the Sleeve Provider to execute and deliver and perform under EFS

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Transactions, EOO Transactions and ICE Block Transactions in connection with Exchange Traded
Contracts entered into by REPS, or held by REPS on the Third A&R Date, or subsequently
obtained by REPS, in each case, in accordance with the provisions of Section 2.03;

     (iv) cause the ML Guarantee Provider to perform under ML Guarantees in connection with
the C&I Contracts and Governmental Contracts listed on Schedule 2.04 (but, in each
case, excluding any Prohibited New C&I Contracts);

     (v) subject to Section 2.05, cause the ML Guarantee Provider to execute and
deliver ML Guarantees to, and cause the Sleeve Provider to provide or post cash collateral
to, Governmental Authorities for Persons making customer deposits and advance payments and
Persons constituting transmission and distribution service providers (for this paragraph,
collectively the “regulatory beneficiaries”), for, in all cases, the obligations of the
Reliant Retail Obligors to such regulatory beneficiaries regarding (A) regulatory
requirements with respect to the conduct of the Retail Energy Business in Approved Markets
under or with Governmental Authorities, (B) the obligations of the Reliant Retail Obligors
with respect to customer deposits and advance payments relating to Approved Markets as
required by Governmental Authorities (including, with respect to the ERCOT Market area,
under PUCT Subst. Reg. 25.107, or any successor thereto), provided that the same are for the
benefit of Persons making customer deposits and advance payments and are payable or made at
the direction of the Reliant Retail Obligors, and (C) the obligations of the Reliant Retail
Obligors with respect to transmission and distribution service in Approved Markets required
by Governmental Authorities (including, with respect to the ERCOT Market area, posting
requirements under PUCT Subst. Reg. 25.108, or any successor thereto); and

     (vi) execute and deliver such further certificates, documents and agreements, and take
such further actions, as REPS may reasonably request to fully implement the intent of the
foregoing;

     Provided, however, that the foregoing commitments of the Merrill Parties are subject to
the following:

     (1) the commitments of the Merrill Parties to enter into any ML Guarantees or Credit
Support Agreements, any EFS Transactions, EOO Transactions, Mirror OTC Contracts or ICE
Block Transactions or any agreement to post or provide cash collateral to Governmental
Authorities, are subject to the satisfaction of the conditions precedent set forth in
Section 4;

     (2) on and after the Third A&R Date the Reliant Retail Obligors shall not enter into
any Prohibited New C&I Contracts; provided that the Merrill Parties agree to consider in
good faith any request of the Reliant Retail Obligors to enter into a Prohibited New C&I
Contract hereunder so long as such request and such Prohibited New C&I Contract are
consistent with the exceptions set forth on Schedule 1.01(i) in respect of C&I
Business entered into after the Third A&R Date.

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          (3) on and after the Third A&R Date the ML Guarantee Provider shall not be obligated to
execute and deliver, or perform under, any new ML Guarantee; and

          (4) following an Unwind Start Date, (A) commitments with respect to any ML Guarantees
and Credit Support Agreements, and EFS Transactions, EOO Transactions, Mirror OTC Contracts
and ICE Block Transactions, other than those described in clause (B) below shall be limited
to transactions outstanding on the Unwind Start Date and the maintenance and modification of
hedges in Accepted Products where those hedges are in place to support contracts with
Residential Mass Customers, Business Services Mass Customers and C&I Customers existing on
the Unwind Start Date, (B) on the first to occur of the last day of the Scheduled Term and
ninety (90) days after the Unwind Start Date, the commitments of the Merrill Parties with
respect to providing ML Guaranties or the posting or provision of collateral to Governmental
Authorities or with respect to customer deposits shall be terminated, and (C) to the extent
of any commitments that have terminated, the Merrill Parties shall have the right to deliver
to the applicable Persons notices that such commitments have terminated and the right to the
return of any collateral theretofore posted under such commitments.

          The Merrill Parties shall take all actions reasonably requested under this Section
2.01(a) by REPS reasonably promptly upon receipt of such request unless another time period is
expressly provided for such actions under this Agreement.

          (b) Exclusivity.

          (i) Subject to Section 2.01(b)(ii), the Reliant Retail Obligors shall conduct all
power, gas and other commodity purchases or sales and all hedging transactions entered into or
performed after the Third A&R Date either:

     (A) Using Accepted Products under the Power and Hedging Contracts and the Power
Purchase Agreements, as applicable, with Accepted Counterparties and within each applicable
Counterparty Limitation;

     (B) On an Accepted Exchange in accordance with Section 2.03;

     (C) With Governmental Customers, and, in each case, such transactions shall be solely
for the Retail Energy Business;

     (D) [Intentionally Deleted];

     (E) Under transactions outstanding on the Third A&R Date and disclosed in a
certificate, dated the Third A&R Date, of a Responsible Officer of REPS;

     (F) Acting as a Scheduling Entity for C&I Customers making purchases from
third-parties, provided such transactions do not result in any increase in the aggregate
credit risk of the Reliant Retail Obligors to such C&I Customers;

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     (G) Under transactions constituting purchases and sales among the Reliant Retail
Obligors;

     (H) Under transactions constituting sales of electricity in the ordinary course of the
Retail Energy Business to Residential Mass Customers, Business Services Mass Customers and
C&I Customers using Accepted Retail Products, provided that from and after the Third A&R
Date the Reliant Retail Obligors will not enter into any Prohibited New C&I Contracts;

     (I) [Intentionally Deleted]; or

     (J) Under transactions with third parties (who are not required to be Accepted
Counterparties) where such transactions are made such that (1) payment for purchases of
applicable RECs are made by the Reliant Retail Obligors after delivery of the RECs to the
applicable Reliant Retail Obligor account, (2) delivery of applicable RECs shall take place
within 12 months of the execution of the applicable transaction, (3) no ML Guarantee is
requested to be provided to the applicable counterparty, and (4) with respect to the
applicable counterparty under such transaction, the sum of (x) the quantity of RECs that
have been contracted for purchase from such counterparty and its affiliates under previous
transactions that have not yet been delivered by such counterparty and affiliates to the
applicable Reliant Retail Obligor account and (y) the quantity of RECs contracted for
purchase from such counterparty and its affiliates under the subject transaction, does not
exceed the limit set forth in the table below:

	 	 	 	 	 
	Type of REC	 	Quantity
	ERCOT
	 	 	100,000	 

          (ii) During an Unwind Period, the Reliant Retail Obligors shall have the right to conduct
power, gas and other commodity purchases or sales and hedging transactions that
would otherwise be restricted by Section 2.01(b)(i) so long as such transactions (A)
are either (1) with Accepted Counterparties and, taken together with the transactions under this
Agreement, are within applicable Counterparty Limitations, or (2) on an Accepted Exchange, (B) do
not impose setoff rights against transactions under Credit Support Agreements, and (C) use Accepted
Products, provided that in no event shall the Reliant Retail Obligors enter into any Prohibited New
C&I Contracts.

          (iii) Until the commitments under the Working Capital Facility have been terminated and the
Working Capital Obligations have been repaid in full (other than indemnities and any similar
obligations of the Reliant Retail Obligors not then due and payable that expressly survive
termination of the Working Capital Facility), and unless an Unwind Start Date has occurred, the
Reliant Retail Obligors shall not enter into any agreement with any Person for the provision of
working capital facilities and, thereafter, shall not enter into any agreement for the provision of
working capital facilities other than Replacement Working Capital Facilities.

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          2.02. Credit Sleeve of OTC Trading and Hedging Activities.

          (a) Modifications and Collateral Posting Under Power and Hedging Contracts. In
connection with the obligations of the Merrill Parties under Section 2.01(a):

     (i) General. Modifications to any Power and Hedging Contract, Credit Support
Agreement or ML Guarantee shall require the consent of the Merrill Parties, not to be
unreasonably withheld or delayed; provided that consent shall be deemed given with respect
to the items provided on Schedule 2.02(a) if not objected to by the Sleeve Provider
within one Business Day of the receipt of the related proposed modification. No consent of
the Merrill Parties shall be required with respect to confirmations reflecting Accepted
Trades under the Power and Hedging Contracts; provided that consent of the Merrill Parties
shall be required to execute any confirmation for an Accepted Trade that (i) modifies the
underlying terms of any Power and Hedging Contract or (ii) modifies or supplements in any
manner (including any supplement providing for posting of additional collateral or any
independent amount) the terms of any Credit Support Agreement, but in each case such consent
shall not be unreasonably withheld or delayed.

     (ii) [Intentionally Deleted].

     (iii) [Intentionally Deleted].

     (iv) [Intentionally Deleted].

     (v) Notice and Demands for Collateral Posting. Following receipt of notice
from any Person, including any Accepted Counterparty or Governmental Customer, that REPS (or
the Sleeve Provider on its behalf) is required to post or return collateral in connection
with any collateral posting obligation that the Sleeve Provider has undertaken in accordance
with this Agreement, REPS shall promptly (and in no event later than, for collateral to be
posted on the same day, 11:00 a.m. CPT on such day of receipt, and for collateral to be
posted on the next day, 2:00 p.m. CPT on such day of receipt) provide such notice to the
Sleeve Provider. On each day in which REPS is permitted to value exposure or make any other
determination in respect of collateral to be posted by or to the
Sleeve Provider in connection with any posting obligation that the Sleeve Provide has
agreed to undertake in connection with this Agreement, REPS shall make such valuation or
determination in good faith and in a commercially reasonable manner. To the extent
applicable, following any valuation or determination made pursuant to the prior sentence,
REPS shall make demand to the applicable Person for the posting of collateral by or the
return of collateral to the Sleeve Provider and to the extent the Sleeve Provider receives
such a demand from REPS, the Sleeve Provider shall, subject to the terms and conditions of
this Agreement and the related Credit Support Agreement, make such posting of Collateral as
demanded, whether or not the Sleeve Provider disputes the valuation, determination or demand
(but subject to the Sleeve Provider’s rights to cause the adjustment thereof below). Each
valuation, determination and demand of REPS specified in this clause (v) shall be made by
REPS without consultation with the Sleeve Provider unless such consultation is sought by
REPS, except that:

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     (1) if the Sleeve Provider disputes any such valuation, determination or
demand, prior to any action taken under paragraphs (2) or (3) below, and prior to
the commencement of any further remedial action, REPS shall negotiate with the
Sleeve Provider in good faith for one Business Day to resolve any such dispute and
upon resolution of such dispute, the applicable valuation, determination or demand
shall be adjusted accordingly, with corresponding adjustments to the subsequent
requests to the Persons to whom such valuations, determinations or demands apply;

     (2) if the Sleeve Provider disputes any such valuation based on Market
Information, prior to any action taken under paragraph (3) below, the Market
Information and resulting calculation shall be determined in accordance with
Section 12.13 and upon such determination, the applicable valuation shall be
adjusted accordingly, with corresponding adjustments to the subsequent requests to
the Persons to whom such valuations apply; provided that, until such determination
in accordance with Section 12.13, the valuation determined by REPS shall
apply;

     (3) to the extent applicable, if after the application of clauses (1) and (2)
above, the Sleeve Provider in its reasonable discretion determines that (x) more
than $30,000,000 in outstanding value of Merrill Collateral remains at any time
posted or is requested to be posted in excess of the amount that is required to be
posted as determined by REPS (determined, in each case, on aggregate basis across
all Persons to whom the Sleeve Provider has such excess posted or has requested
posting of Merrill Collateral in an outstanding value of $2,000,000 or more in
connection with this Agreement), or (y) more than $10,000,000 in outstanding value
of Merrill Collateral remains at any time posted or is requested to be posted to any
single Person in excess of the amount that is required to be posted as determined by
REPS, then, in either case, if REPS disputes such determination, such determination
shall be referred by the parties to the Calculation Agent within three Business Days
for resolution, and upon resolution of such dispute the applicable valuation shall
apply and REPS shall use its reasonable best efforts to negotiate with, and to the
extent applicable, dispute
valuations of, or provide updated valuations to each such Person holding excess
Merrill Collateral that the Sleeve Provider may direct in accordance with the
resolution; provided that in lieu thereof REPS may instead authorize the Sleeve
Provider to do so; and provided further that, until resolution of this dispute by
the Calculation Agent, the valuation determined by REPS shall apply; and

     (4) to the extent applicable, if after application of clause (1) and (2) above
the Sleeve Provider in its reasonable discretion determines that the outstanding
value of any single Counterparty’s cash collateral posted or requested to be posted
to any Reliant Retail Obligor as determined by REPS is more than $10,000,000 in
deficiency of the amount that is required to be posted as determined by Sleeve
Provider, then, if REPS disputes such determination, such determination shall be
referred by the parties to the Calculation Agent for within three Business Days, and
upon resolution of such dispute the applicable valuation shall apply and REPS

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shall
use its reasonable best efforts to negotiate with, and to the extent applicable,
dispute valuations of, or provide updated valuations to each such Counterparty that
the Sleeve Provider may direct in accordance with the resolution; provided that in
lieu thereof REPS may instead authorize the Sleeve Provider to do so; and provided
further that, until resolution of this dispute by the Calculation Agent, the
valuation determined by REPS shall apply .

          (b) Accepted Counterparties and Counterparty Limitations. Each counterparty listed on
Exhibit B shall constitute an Accepted Counterparty and the limitations set forth therein
(including those with respect to RECs in Annex A to Exhibit B) shall constitute such
Accepted Counterparty’s “Counterparty Limitations” (in respect of each Accepted Product set
forth therein). Following a Failure to Pay or Post or other material event of default (howsoever
defined, but after all applicable grace periods), a Bankruptcy Event or a Downgrade Event in
respect of an Accepted Counterparty, the Sleeve Provider shall have the right by written notice to
REPS to adjust the Counterparty Limitations applicable to such Accepted Counterparty, as determined
by the Sleeve Provider in its commercially reasonable discretion.

          (c) Compliance Requirements. Each Compliance Party shall be subject to the Compliance
Requirements.

          2.03. Credit Sleeve of Exchange Traded Hedging Activities.

          On each Business Day, on and after the Third A&R Date, REPS and the Sleeve Provider shall
execute (i) one EFS Transaction or EOO Transaction per Accepted Product, for all of the NYMEX
Exchanged Traded Contracts held by REPS as of the mutually agreed upon time on such Business Day,
by the close of the Business Day such NYMEX Exchanged Traded Contracts were entered into, and (ii)
one ICE Block Transaction per Accepted Product, for all of the ICE cleared swap contracts held by
REPS as of the mutually agreed upon time on such Business Day, by the close of the Business Day
such ICE cleared swap contracts were entered into. With respect to all EFS Transactions, EOO
Transactions and ICE Block Transactions, each Party shall pay its own broker’s fees and FCM fees.

          2.04. Offsetting Trades.

          (a) On the Third A&R Date, the Reliant Retail Obligors shall cause NRG Parent to novate to
REPS the Offsetting Trades, which novations shall be made pursuant to a novation agreement and on
terms and conditions reasonably satisfactory to the Merrill Parties. Concurrently therewith, the
Reliant Retail Obligors shall cause PMI to enter into a back-to-back transaction with REPS under
the PMI/REPS RW ISDA in respect of each Offsetting Trade in which PMI takes the same position as it
took in the original Offsetting Trade.

          (b) In addition, the Reliant Retail Obligors shall have the right from time to time after the
Third A&R Date to initiate additional novation transactions in a manner consistent with, and having
a similar benefit to the Reliant Retail Obligors and the Sleeve Provider, as the above novations of
the Offsetting Trades.

          (c) All novations and trades made pursuant to this Section 2.04 shall be

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completed in
a manner reasonably satisfactory to the Merrill Parties. In connection with such novations and
trades, the Merrill Parties agree to consider in good faith any request of the Reliant Retail
Obligors to modify the limits in Section 7.17 and on Exhibit B hereto so long as
such request would comply with the then current credit policies of the Sleeve Provider.

          (d) The Reliant Retail Obligors agree that at no time following the Third A&R Date will any
Reliant Retail Obligor execute (or request that the Sleeve Provider execute) any Accepted Trade or
Exchange Traded Contract, including any EFS Transactions, EOO Transactions or ICE Block
Transactions, for the purpose of offsetting or reversing the economic effect to the Reliant Retail
Obligors and the Sleeve Provider of the Offsetting Trades in clause (a) above.

          2.05. Credit Sleeve of Regulatory Obligations. In connection with the obligation of the
Merrill Parties under Section 2.01(a)(v), REPS shall endeavor with the Merrill Parties to
cause the applicable beneficiaries to accept ML Guarantees instead of the posting or provision of
cash collateral. In providing any such ML Guarantee, cash collateral, or other collateral which
the Merrill Parties may agree in their sole discretion, neither the Merrill Parties nor any of
their Affiliates shall be responsible for or otherwise guarantee or assure, any other regulatory
requirements or compliance provisions applicable to the Reliant Retail Obligors, other than those
pertaining to required financial criteria and the required posting of guarantees, cash collateral
or such other collateral with respect to the applicable regulatory beneficiaries identified in, and
as defined in, Section 2.01(a)(v). In no event shall the Merrill Parties be required to
post any surety bond or letters of credit.

          2.06. Term.

          (a) The term of this Agreement (the “Term”) shall be the period from the First
Execution Date through the Credit Sleeve Termination Date.

          (b) REPS shall have the right to declare an Unwind Start Date at any time that the ML
Guarantee Provider shall have an Additional Support Credit Rating, upon written notice by REPS to
the Sleeve Provider and the ML Guarantee Provider to be effective as of the Business Day next
following receipt of such notice.

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          Section 3. Payments, Fees and Records.

          3.01. Notice of Payment on ML Guarantee or Collateral Foreclosure. The Sleeve Provider
shall notify REPS, promptly upon receipt from any beneficiary or recipient of an ML Guarantee or
any secured party to which the Sleeve Provider has provided collateral pursuant to Article 2
(whether a ML Guarantee, posted cash collateral, surety bond, letter of credit or other collateral
or credit support, “Merrill Collateral” or “ML Collateral”) of any demand for
payment under such ML Collateral or any Collateral Foreclosure thereon or of any notice of default.
The Sleeve Provider shall notify REPS of the Dollar amount paid by the Merrill Parties as a result
of such demand or the Dollar amount of Merrill Collateral relating to such Collateral Foreclosure,
as applicable, and the date on which payment was made by a Merrill Party in respect of such demand
or the date on which such Collateral Foreclosure occurred, as applicable (any such date, a
“Capital Outlay Date”).

          3.02. Repayment of Draw Reimbursement Obligations. REPS hereby unconditionally and
irrevocably promises to pay to the Sleeve Provider, on behalf of the applicable Merrill Party, the
entire outstanding Dollar amount of each payment on behalf of the Reliant Retail Obligors by the ML
Guarantee Provider or the Sleeve Provider arising from each demand for payment under Merrill
Collateral or payment on behalf of the Reliant Retail Obligors by the Sleeve Provider arising from
each Collateral Foreclosure of ML Collateral and the entire outstanding Dollar amount of any ML
Collateral that is not returned by any person to the Merrill Parties for any reason (including, any
bankruptcy or insolvency of the applicable counterparty) within one Business Day of the time
required by the terms of the applicable Counterparty Document or other applicable arrangement
pursuant to which such Merrill Collateral was posted to such person (each, a “Draw
Reimbursement Obligation”), notwithstanding the identity of the beneficiary or recipient of any
Merrill Collateral, and without presentment, demand, protest or other formalities of any kind.
Each such Draw Reimbursement Obligation shall mature on the Business Day following the date the
Sleeve Provider delivers notice to REPS of the related Capital Outlay Date as provided in
Section 3.01 (the “Notice Date”); provided that, in the event that, on or prior to
the Business Day following the Notice Date, REPS delivers to the Sleeve Provider in good faith a
written notice referred to in Section 8.02(b) or (c) predicated upon (i) failure to pay
under any ML Guarantee after demand by the beneficiary complying with the terms and conditions of
the ML Guarantee or (ii) the breach of a Merrill Party of its obligations under Section
2.01 or any Credit Support Agreement, such Draw Reimbursement Obligation shall mature and be
payable on the earliest of (A) the date that the notice to the Sleeve Provider is withdrawn, (B)
the date the underlying failure related to the Draw Reimbursement Obligation is cured, (C) the date
that the remedies under Section 9.02 with respect to such failure have been resolved,
mutually concluded, or finally determined by a court of competent jurisdiction, (D) the date that
the Working Capital Facility matures (whether on the Maturity Date under, and as defined in, the
Working Capital Facility, by acceleration or
otherwise), or (E) November 1, 2010 (any Reimbursement Obligation subject to the foregoing proviso,
a “Deferred Draw Reimbursement Obligation”).

Notwithstanding any payment of a Draw Reimbursement Obligation REPS makes as required in this
Section 3.02, REPS does not by making such payment waive any rights under Sections
8.02 and 9.02 against a Merrill Party related to the applicable Draw Reimbursement
Obligation, subject to the limitations in Section 9.04.

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          3.03. Interest.

          (a) (i) REPS hereby unconditionally promises to pay to the Sleeve Provider, when due and
payable in accordance with Section 3.03(d):

     (A) interest accruing at a rate per annum equal to the Base Rate (as in effect from
time to time) plus 5.875% on the unreimbursed Dollar amount of each Current Draw
Reimbursement Obligation for the period from and including the Business Day following the
related Notice Date to but excluding the date the Dollar amount of such Current Draw
Reimbursement Obligation shall be paid in full; and

     (B) interest accruing at a rate per annum equal to the LIBO Rate (as defined in the
Working Capital Facility and incorporated by reference in accordance with Section
3.03(a)(ii)) plus 5.875% on the unpaid Dollar amount of each Deferred Reimbursement
Obligation for the period from and including the Business Day following the related Notice
Date to but excluding the date the Dollar amount of such Deferred Reimbursement Obligation
shall be paid in full.

     (ii) REPS agrees, for the benefit of the Sleeve Provider, to perform, comply with and
be bound by each of its covenants, agreements and obligations contained in Sections 2.10,
2.13, and 2.14 of the Working Capital Facility with respect to Deferred Reimbursement
Obligations, as modified and supplemented and in effect from time to time, or as last in
effect in the event the Working Capital Facility shall be terminated. Without limiting the
generality of the foregoing, the above-mentioned provisions of Working Capital Facility,
together with related definitions (including the definition of “LIBO Rate” and “Interest
Payment Date”) and ancillary provisions, are hereby incorporated herein by reference, as if
set forth herein in full, mutatis mutandis.

          (b) Notwithstanding Section 3.03(a), REPS hereby unconditionally promises to pay to
the Sleeve Provider, when due and payable in accordance with Section 3.03(d), interest
accruing at a rate per annum equal to the Post-Default Rate (as in effect from time to time) on
(i) the Dollar amount of each Reimbursement Obligation that is not paid in full within one Business
Day after becoming due and (ii) any other overdue amount payable by REPS or any other Reliant
Retail Obligor under any Transaction Documents with any Merrill Party, in each case for the period
from and including the due date thereof to but excluding the date the same is paid in full.

          (c) Interest on any amount, including interest on Reimbursement Obligations, shall be computed
on the basis of actual days elapsed (including the first day but excluding the last day) occurring
during the period such interest accrues and a year of 365 or 366 days, as applicable (if computed
by reference to the Prime Rate) or 360 days (if computed by reference to the Federal Funds Rate or
the LIBO Rate).

          (d) (i) Subject to clause (iii) below, accrued interest on each Current Draw Reimbursement
Obligation shall be payable monthly on the last Business Day of each month and on the date that
such Current Draw Reimbursement Obligation shall be paid in full; (ii) subject to

-49-

 

clause (iii)
below, accrued interest on each Deferred Reimbursement Obligation shall be payable on each Interest
Payment Date (as defined in the Working Capital Facility and incorporated by reference in
accordance with Section 3.03(a)(ii)) for such Deferred Reimbursement Obligation and on the
date that such Deferred Reimbursement Obligation shall be paid in full; provided that interest
payable on each Interest Payment Date prior to the date that such Deferred Reimbursement Obligation
is payable shall be reserved in accordance with Section 6.11(c)(vi) in lieu of being paid
on such Interest Payment Date; and (iii) accrued interest on any amount (including Current Draw
Reimbursement Obligations and Deferred Reimbursement Obligations) payable in accordance with
Section 3.03(b) shall be payable on demand from time to time, on the last Business Day of
each month and on the date that such amount is paid in full.

          3.04. Sleeve Fees.

          REPS hereby unconditionally promises to pay to the Sleeve Provider:

          (a) with respect to each month, the Monthly Sleeve Fee for such month, payable in advance on
the Monthly Payment Date for such month;

          (b) with respect to each month in which Exposure exceeds the Target Exposure, the Additional
Sleeve Fee for such month (which shall be in addition to the Monthly Sleeve Fee for such month),
which shall be payable promptly, and in event within three Business Days of notice from the Sleeve
Provider to REPS that such Additional Sleeve Fee is due and payable;

          (c) with respect to each month in which Exposure exceeds the Maximum Permitted Exposure, the
Excess Exposure Fee for such month (which shall be in addition to the Monthly Sleeve Fee and the
Additional Sleeve Fee for such month), which shall be payable promptly, and in event within three
Business Days of notice from the Sleeve Provider to REPS that such Excess Exposure Fee is due and
payable; and

          (d) with respect to the month of April 2009, the “Monthly Sleeve Fee” (as defined in the
Existing CSRA) in respect of such month (the “April 2009 Sleeve Fee”), which amount shall
be due and payable and calculated in accordance with the relevant provisions of the Existing CSRA
(as if the Existing CSRA remained in effect); provided that the Parties acknowledge and agree that
no “True-Up Sleeve Fee Amount” or other adjustment to the April
2009 Sleeve Fee or any other sleeve fees previously paid under the Existing CSRA shall be due
and payable.

All Monthly Sleeve Fee, Additional Sleeve Fee and Excess Exposure Fee or any portion of any thereof
shall not be refundable under any circumstances. In addition, REPS hereby unconditionally promises
to pay to the Sleeve Provider from time to time on demand interest accruing at a rate per annum
equal to the Post-Default Rate (as in effect from time to time) on the aggregate amount of any
Monthly Sleeve Fee, Additional Sleeve Fee or Excess Exposure Fee that is not paid in full when due.

          3.05. Make-Whole Payment. In the event that the Credit Sleeve Termination Date occurs on
or prior to January 1, 2010, REPS shall pay to the Sleeve Provider

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on the Credit Sleeve Termination
Date a make-whole payment in an amount equal to $10,000,000 (the “Make-whole Payment”);
provided that, no Make-whole Payment will be due if, following the occurrence on or prior to
January 1, 2010 of any Sleeve Provider Event of Default under Section 8.02(b), (f),
(g) or (h), the Reliant Retail Obligors shall have declared the Unwind Start Date
and be actively pursuing the engagement of a Replacement Sleeve Provider. The Make-whole Payment
or any portion thereof shall not be refundable under any circumstances.

          3.06. Payments Generally.

          (a) Payments by Reliant Retail Obligors. Except to the extent otherwise provided
herein, all payments in respect of Reimbursement Obligations, interest, Monthly Sleeve Fees,
Additional Sleeve Fees, any Excess Exposure Fee, Make-whole Payment and other amounts to be made by
the Reliant Retail Obligors under this Agreement, and, except to the extent otherwise provided
therein, all payments to be made by the Reliant Retail Obligors under any other Transaction
Document, shall be made in Dollars, in immediately available funds, without deduction, set-off or
counterclaim to the Sleeve Provider at the account designated on Schedule 3.06(a) or any
other account designated in writing by the Sleeve Provider to REPS not less than five Business Days
before any payment is made, not later than 3:00 p.m., New York City time, on the date on which such
payment shall become due (each such payment made after such time on such due date to be deemed to
have been made on the next succeeding Business Day).

          (b) Extensions to Next Business Day. If the due date of any payment under this
Agreement would otherwise fall on a day that is not a Business Day, such date shall be extended to
the immediately succeeding Business Day and interest shall be payable for any amount so extended
for the period of such extension (except in the case of the Monthly Sleeve Fee).

          3.07. Records; Prima Facie Evidence.

          (a) Maintenance of Records by the Sleeve Provider. The Sleeve Provider shall maintain
records in which it shall record (i) each ML Guarantee issued hereunder or other Merrill Collateral
provided hereunder, (ii) the amount of each Reimbursement Obligation,
(iii) interest due and payable or to become due and payable from REPS to the Sleeve Provider
hereunder and (iv) the amount of any sum received by the Sleeve Provider hereunder.

          (b) Effect of Entries. The entries made in the records maintained pursuant to
paragraph (a) above shall be prima facie evidence of the existence and amounts of
the obligations recorded therein; provided that the failure of the Sleeve Provider to maintain such
records or any error therein shall not in any manner affect the obligation of REPS to repay the
Reimbursement Obligations in accordance with the terms of this Agreement.

          Section 4. Conditions.

The obligation of the Merrill Parties to provide Merrill Collateral, or enter into any EFS
Transactions, EOO Transactions, Mirror OTC Contracts or ICE Block Transactions, any agreement to
post or provide cash collateral to Governmental Authorities or other Persons or any

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transaction
contemplated by Section 2.02 is subject to the following conditions precedent that, both
immediately prior to and after giving effect thereto and to the intended use thereof:

     (a) (i) Each of the representations and warranties of the Reliant Retail Obligors made
in Section 5 and in the other Transaction Documents which is qualified by
materiality shall be true and correct and (ii) each of the other representations and
warranties of the Reliant Retail Obligors made in Section 5 and in the other
Transaction Documents shall be true and correct in all material respects, in each case of
clause (i) and (ii) on and as of the date of request provision of other Merrill Collateral,
with the same force and effect as if made on and as of such date (or, if any such
representation or warranty is expressly stated to have been made as of a specific date, as
of such specific date); and

     (b) no Reliant Default or Reliant Event of Default shall have occurred and be
continuing.

Each request by REPS for provision of Merrill Collateral shall constitute a certification to the
effect that the above conditions have been satisfied.

          Section 5. Representations and Warranties. Each of the Reliant Retail Obligors hereby represents
and warrants as follows:

          5.01. Existence, Qualification and Power; Compliance with Laws. Such Person (a) is duly
organized or formed, validly existing and in good standing under the Laws of the jurisdiction of
its incorporation or organization, (b) has all requisite power and authority and all requisite
governmental licenses, authorizations, consents and approvals to (i) own its assets and carry on
its business and (ii) execute, deliver and perform its obligations under the Transaction Documents
to which it is a party, (c) is duly qualified and is licensed and in good standing under the Laws
of each jurisdiction where its ownership, lease or operation of properties or the conduct of its
business requires such qualification or license, and (d) is in compliance with all Laws; except in
each case referred to in clause (b)(i), (c) or (d), to the extent that
failure to do so could not reasonably be expected to have a Material Adverse Effect.

          5.02. Authorization; No Contravention. The execution, delivery and performance by such
Person of each Transaction Document to which such Person is party, have been duly authorized by all
necessary corporate or other organizational action, and do not and will not (a) contravene the
terms of any of such Person’s Organizational Documents; (b) conflict with or result in any breach
or contravention of, or the creation of any Lien (other than Permitted Liens) under, or require any
payment to be made under (i) any Contractual Obligation to which such Person is a party or
affecting such Person or the properties of such Person or any of its Subsidiaries, except in each
case as could not reasonably be expected to have a Material Adverse Effect, or (ii) any order,
injunction, writ or decree of any Governmental Authority or any arbitral award to which such Person
or its property is subject that could reasonably be expected to have a Material Adverse Effect; (c)
violate any Law that could reasonably be expected to have a Material Adverse Effect; or (d) result
in the creation of any Lien other than a Permitted Lien. The Reliant Retail Obligors are in
compliance with all Contractual Obligations referred to in

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clause (b)(i), except to the
extent that failure to do so could not reasonably be expected to have a Material Adverse Effect.

          5.03. Governmental Authorization; Other Consents. Except as to those which have been duly
obtained, taken, given or made and are in full force and effect and except as noted below, no
approval, consent, exemption, authorization, or other action by, or notice to, or filing with, any
Governmental Authority or any other Person is necessary or required in connection with (i) the
execution, delivery or performance by any Reliant Retail Obligors of this Agreement or any other
Transaction Document, (ii) the grant by any Reliant Retail Obligors of the Liens granted by it
pursuant to the Transaction Documents, or (iii) the perfection or maintenance of the Liens created
under the Transaction Documents (including the first priority (subject to Permitted Liens and to
the extent set forth in Section 5.19) nature thereof), other than the filing of UCC-1
Financing Statements and applicable filings with respect to patents, trademarks and material
copyrights and such other actions described in Section 5.19. The Parties recognize that in
connection with transaction contemplated hereby, one or more of the Reliant Retail Obligors may be
required to seek approval and/or provide notice to a Governmental Authority prior to or in order to
undertake one or more of the transactions not prohibited by Article 7.

          5.04. Binding Effect. This Agreement has been, and each other Transaction Document, when
executed and delivered hereunder, will have been, duly executed and delivered by each Reliant
Retail Obligor that is party thereto. This Agreement constitutes, and each other Transaction
Document when so executed and delivered will constitute, a legal, valid and binding obligation of
each Reliant Retail Obligor, enforceable against each Reliant Retail Obligor that is party thereto
in accordance with its terms, except as enforceability may be limited by applicable bankruptcy,
insolvency, reorganization or similar laws affecting creditors’ rights generally and by general
principles of equity, whether such enforceability is considered in a proceeding at law or in
equity.

          5.05. Financial Statements; No Material Adverse Effect.

          (a) The Audited Financial Statements (i) were prepared in accordance with GAAP consistently
applied throughout the period covered thereby, except as otherwise expressly noted therein and (ii)
fairly present in all material respects the consolidated financial condition of RERH Holdings and
its consolidated Subsidiaries as of the date thereof and their results of operations and cash flows
for the period covered thereby in accordance with GAAP consistently applied throughout the period
covered thereby, except as otherwise expressly noted therein.

          (b) The Unaudited Financial Statements (i) were prepared in accordance with GAAP consistently
applied throughout the period covered thereby, except as otherwise expressly noted therein and (ii)
fairly present in all material respects the consolidated financial condition of RERH Holdings and
its consolidated Subsidiaries as of the date thereof and their results of operations and cash flows
for the period covered thereby in accordance with GAAP consistently applied throughout the period
covered thereby, except as otherwise expressly noted therein, subject, in the case of
clauses (i) and (ii), to the absence of footnotes and to normal year-end audit
adjustments.

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          (c) The Projected Financial Statements fairly present in all material respects on a pro forma
basis the estimated assets and liabilities of the Retail Energy Business contemplated by this
Agreement as of the Third A&R Date (immediately after giving effect to the Retail Acquisition), it
being understood that estimates (including pro forma financials such as the Projected Financial
Statements) are by their nature inherently uncertain and no assurances are being given that such
results will be achieved.

          (d) From the date of the Audited Financial Statements through the Third A&R Date, except as
disclosed in public filings or in writing to the Sleeve Provider on or before five Business Days
before the Third A&R Date, there has been no event or circumstance, either individually or in the
aggregate that has had or could reasonably be expected to have a Material Adverse Effect.

          5.06. Litigation. There are no actions, suits, proceedings, claims or disputes pending or,
to the knowledge of each Reliant Retail Obligor, threatened or contemplated, at law, in equity, in
arbitration or before any Governmental Authority, by or against the Reliant Retail Obligors or
against any of their properties or revenues that (a) purport to affect or pertain to this Agreement
or any other Transaction Document, or any of the transactions contemplated hereby or (b) except as
disclosed to the Sleeve Provider on Schedule 5.06, exist on or prior to the Third A&R Date
and either individually or in the aggregate, if determined adversely, could reasonably be expected
to have a Material Adverse Effect.

          5.07. No Default. Immediately prior to the Third A&R Date, and before giving effect to the
amendment and
restatement of this Agreement described in Section 12.17, no Reliant Default had occurred
and was continuing. On the Third A&R Date, and after giving effect to the amendment and
restatement of this Agreement described in Section 12.17, no Reliant Default has occurred
and is continuing or would result from the consummation of the amendment and restatement described
in Section 12.17 or the resulting transactions contemplated by this Agreement or any other
Transaction Document.

          5.08. Ownership of Property; Liens.

          (a) Each of the Reliant Retail Obligors has good and marketable title in fee simple to, or
valid leasehold interests in, or a valid license or other valid, written right to use all real
property necessary or used in the ordinary conduct of its business, except for Permitted Liens and
such defects in title as could not, individually or in the aggregate, reasonably be expected to
have a Material Adverse Effect.

          (b) The property of the Reliant Retail Obligors is subject to no Liens, other than Permitted
Liens.

          (c) As of the Third A&R Date, the Reliant Retail Obligors have no fee interests in real
property.

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          5.09. Environmental Matters.

          (a) The Reliant Retail Obligors have been and are in compliance with all Environmental Laws,
including obtaining and complying with all required environmental permits, other than
non-compliances that could not, individually or in the aggregate, reasonably be expected to result
in a Material Adverse Effect.

          (b) None of the Reliant Retail Obligors nor any property currently owned, operated or leased
by or for Reliant Retail Obligors is subject to any pending or, to the knowledge of the Reliant
Retail Obligors, threatened, claim, order, agreement, notice of violation, notice of potential
liability or is the subject of any pending or threatened proceeding or governmental investigation
under or pursuant to Environmental Laws other than those that could not, individually or in the
aggregate, reasonably be expected to result in a Material Adverse Effect.

          (c) As of the Third A&R Date, none of the Reliant Retail Obligors owns or operates a hazardous
waste treatment, storage or disposal facility requiring a permit under the Resource Conservation
and Recovery Act, 42 U.S.C. Section 6901 et seq., the regulations thereunder or any state analogous
statute or regulation.

          (d) There are no facts, circumstances or conditions known to the Reliant Retail Obligors
arising out of or relating to the operations or ownership of the Reliant Retail Obligors or of the
property owned, operated or leased by the Reliant Retail Obligors that are not specifically
included in the financial information furnished to the Sleeve Provider that could be reasonably
expected to result in any Environmental Liabilities that could reasonably be expected to have a
Material Adverse Effect, except for such liabilities that are (i) covered by environmental
liability insurance, (ii) subject to an indemnity from any Governmental Authority, or (iii) subject
to an indemnity satisfactory to REPS from a Person that is not an Affiliate of REPS that REPS has
determined in good faith is appropriately credit worthy in relation to the potential amount of such
liabilities.

          (e) As of the Third A&R Date, to the knowledge of the Reliant Retail Obligors, no
environmental Lien has attached to any property owned by the Reliant Retail Obligors and, to the
knowledge of the Reliant Retail Obligors, no facts, circumstance or conditions exist that could,
individually or in the aggregate, reasonably be expected to result in an environmental Lien that
would have a Material Adverse Effect.

          (f) None of the Reliant Retail Obligors is undertaking, and has not completed, either
individually or together with other potentially responsible parties, any investigation or
assessment or remedial action relating to any actual or threatened release of Hazardous Materials
at any site, location or operation, either voluntarily or pursuant to the order of any Governmental
Authority or the requirements of any Environmental Law that could reasonably be expected to have a
Material Adverse Effect; and all Hazardous Materials generated, used, treated, handled or stored
at, or transported to or from, any property currently or formerly owned or operated by the Reliant
Retail Obligors have been disposed of in a manner that could not, individually or in the aggregate,
reasonably be expected to result in a Material Adverse Effect.

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          5.10. Insurance. The properties of the Reliant Retail Obligors are insured with
financially sound and reputable insurance companies not Affiliates of REPS (provided, however, that
there shall be no breach of this Section 5.10 if any such insurer becomes financially
unsound and the applicable Reliant Retail Obligor obtains reasonably promptly insurance coverage
from a different financially sound insurer), in such amounts (after giving effect to any
self-insurance compatible with the following standards), with such deductibles and covering such
risks as are customarily carried by companies of the same or similar size engaged in similar
businesses and owning similar properties in localities where each Reliant Retail Obligor operates,
which insurance may be under policies obtained by NRG Parent.

          5.11. Taxes. The Reliant Retail Obligors have filed all Federal, state and other material
tax returns and reports required to be filed after giving effect to applicable extensions, except
for tax returns or reports the failure of which to timely file could not reasonably be expected to
have a Material Adverse Effect, and have paid all Federal, state and other material taxes,
assessments, fees and other governmental charges levied or imposed upon them or their properties,
income or assets otherwise due and payable, except those which are being contested in good faith by
appropriate proceedings diligently conducted and for which adequate reserves have been provided in
accordance with GAAP. There is no proposed tax assessment against any Reliant Retail Obligor that
would, if made, have a Material Adverse Effect. Except for the provisions of the NRG Parent
Services Agreement or any replacement thereof with respect to tax matters entered into in
accordance with Section 7.15, neither RERH Holdings nor any Subsidiary thereof is party to
any tax sharing agreement that would create any liability for taxes (for any period either before
or after the Third A&R Date), after taking into account the provisions of the NRG Parent Services
Agreement or any such replacement.

          5.12. ERISA Compliance.

          (a) Except as could not reasonably be expected to result in a Material Adverse Effect, (i)
each Plan has been established, operated and administered in compliance in all material respects
with its terms and the applicable provisions of ERISA, the Code and other Federal or state Laws,
(ii) each Plan that is intended to qualify under Section 401(a) of the Code has received a
favorable determination letter from the IRS or an application for such a letter is currently being
processed by the IRS with respect thereto and, to the best knowledge of the Reliant Retail
Obligors, nothing has occurred which would prevent, or cause the loss of, such qualification, and
(iii) RERH Holdings and each ERISA Affiliate have made all required contributions (both quarterly
and annually) to each Plan subject to Section 412 of the Code, and no application for a funding
waiver or an extension of any amortization period pursuant to Section 412 of the Code has been made
with respect to any Plan.

          (b) There are no pending or, to the best knowledge of the Reliant Retail Obligors, threatened
claims, actions or lawsuits or investigations, or action by any Governmental Authority, with
respect to any Plan that could reasonably be expected to have a Material Adverse Effect. There has
been no prohibited transaction or violation of the fiduciary responsibility rules with respect to
any Plan that has resulted or could reasonably be expected to result in a Material Adverse Effect.

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          (c) (i) No ERISA Event has occurred or is reasonably expected to occur that could reasonably
be expected to have a Material Adverse Effect; (ii) no Pension Plan has any Unfunded Pension
Liability, whether or not waived, that could reasonably be expected to have a Material Adverse
Effect, and no application for a waiver of the minimum funding standard has been filed or is
expected to be filed with respect to any Pension Plan; (iii) none of the Reliant Retail Obligors
and any of their ERISA Affiliates has incurred, or reasonably expects to incur, any liability (and
no event has occurred which, with the giving of notice under Section 4219 of ERISA, would result in
such liability) under Sections 4201 or 4243 of ERISA with respect to a Multiemployer Plan that
could reasonably be expected to have a Material Adverse Effect; and (iv) none of the Reliant Retail
Obligors and any of their ERISA Affiliates has engaged in a transaction that could be subject to
Sections 4069 or 4212(c) of ERISA.

          5.13. Subsidiaries; Equity Interests. On the Third A&R Date, (a) RERH Holdings has no
Subsidiaries other than RERH, REPS, RERS and RERR and each such Subsidiary is a Wholly Owned
Subsidiary of RERH Holdings, and all of the outstanding Equity Interests in such Subsidiaries have
been validly issued, are fully paid and nonassessable and are free and clear of all Liens except
those created under the Transaction Documents and the Permitted Liens, (b) RERH Holdings and its
Subsidiaries have no equity investments in any other Persons, and (c) set forth in Schedule
5.13 is a complete and accurate list of the jurisdiction of incorporation, the address of
principal place of business and U.S. taxpayer identification number for RERH Holdings and its
Subsidiaries.

          5.14. Margin Regulations; Investment Company Act; Public Utility Holding Company Act.

          (a) None of the Reliant Retail Obligors is engaged or will engage, principally or as one of
its important activities, in the business of purchasing or carrying Margin Stock, or extending
credit for the purpose of purchasing or carrying Margin Stock.

          (b) None of the Reliant Retail Obligors or any Person Controlling the Reliant Retail Obligors
(i) is in violation of any regulation under the Public Utility Holding Company Act of 2005, the
Federal Power Act or any foreign, federal or local statute or any other Law of the United States of
America or any other jurisdiction, in each case limiting its ability to incur indebtedness for
money borrowed as contemplated by any Transaction Document, or (ii) is or is required to be
registered as an “investment company” under the Investment Company Act of 1940.

          5.15. Disclosure. The Reliant Retail Obligors have disclosed to the Sleeve Provider all
agreements, instruments and corporate or other restrictions to which the Reliant Retail Obligors
are subject, and all other matters known to it (other than general industry, political, and
economic conditions), that, individually or in the aggregate, could reasonably be expected to
result in a Material Adverse Effect. No report, financial statement, certificate or other
information furnished (whether in writing or orally) by or on behalf of any Reliant Retail Obligor
to the Sleeve Provider in connection with the transactions contemplated or delivered to the Sleeve
Provider hereunder or under any other Transaction Document (in each case, as modified or
supplemented by other information so furnished), at the time furnished or delivered, contains any
material misstatement of fact or omits to state any material fact necessary to make

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the statements therein, taken as a whole, in the light of the circumstances under which they were
made, not misleading; provided that with respect to projected financial information (including the
Projected Financial Statements), the Reliant Retail Obligors represent only that such information
was prepared in good faith based upon assumptions believed to be reasonable at the time made; it
being understood that estimates (including pro forma financials such as the Projected Financial
Statements) are by their nature inherently uncertain and no assurances are being given that such
results will be achieved; and provided further, that the Reliant Retail Obligors make no
representation or warranty, express or implied, with respect to the Compliance Information
delivered to Sleeve Provider in accordance with Section 2.02(c).

          5.16. Compliance with Laws. Except as set forth on Schedule 5.16, each of the
Reliant Retail Obligors is in compliance in all material respects with the requirements of all Laws
and all orders, writs, injunctions and decrees applicable to it or to its properties, except in
such instances in which (a) such requirement of Law or order, writ, injunction or decree is being
contested in good faith by appropriate proceedings diligently conducted or (b) the failure to
comply therewith, either individually or in the aggregate, could not reasonably be expected to have
a Material Adverse Effect.

          5.17. Intellectual Property; Licenses, Etc. The Reliant Retail Obligors own, or possess
the right to use, all of the trademarks, service marks, trade names, copyrights, patents, patent
rights, franchises, licenses and other intellectual property rights (collectively, “IP
Rights”) that are necessary for the operation of their respective businesses, without conflict
with the rights of any other Person, unless the failure to so own or possess the right to use could
not reasonably be expected to have a Material Adverse Effect. To the best knowledge of the Reliant
Retail Obligors, no slogan or other advertising device, product, process, method, substance, part
or other material now employed, or now contemplated to be employed, by the Reliant Retail Obligors
infringes upon any rights held by any other Person in a manner that could reasonably be expected to
have a Material Adverse Effect. No claim or litigation regarding any of the foregoing is pending
or, to the best knowledge of the Reliant Retail Obligors, threatened, which, either individually or
in the aggregate, could reasonably be expected to have a Material Adverse Effect.

          5.18. Solvency. RERH Holdings is, together with its Subsidiaries on a consolidated basis,
Solvent.

          5.19. Perfection, Etc. The Security Documents, together with (i) the filing of appropriate
UCC-1 and, if applicable, UCC-3, financing statements with the filing offices required under the
Security Agreement, and (ii) the possession of certificated Pledged Securities (together with blank
executed stock powers with respect thereto and money not credited to a Deposit Account), if any,
(iii) the execution of agreements providing for “control” (as described under Section 9-104 and
9-106 of the UCC) in respect of deposit accounts, securities accounts, commodities accounts and
letter-of-credit rights that are not supporting obligations, and (iv) compliance with Section 9-311
and 9-313 of the UCC in respect of assets subject to a certificate of title statute, create and
grant to the Collateral Trustee for the benefit of the holders of Secured Obligations, including
the Merrill Parties, a valid, first priority (subject to Permitted Liens), perfected security
interest in the Collateral (to the extent such security interest

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can be accomplished under applicable Laws), subject to the terms and provisions of the Security
Agreement.

          5.20. Employees, Etc. On the Third A&R Date, RERH Holdings and its Subsidiaries have
sufficient officers and employees that, taken together with the services provided under arm’s
length service contracts (including the NRG Parent Service Agreement and the Transition Services
Agreement), they can run the Retail Energy Business in a manner consistent with the business
operations of the Retail Energy Business as of the Third A&R Date and provide the Retail Provided
Services required to be provided by the Reliant Retail Obligors in accordance with the NRG Parent
Services Agreement.

          5.21. Information Technology Systems. On the Third A&R Date, RERH Holdings and its
Subsidiaries own or have access to (through arm’s length contracts including the IT Service
Agreement, the Transition Services Agreement, the NRG Parent Services Agreement and the IP License
Agreement, in each case, if then in effect) the Information Technology Systems necessary to run the
Retail Energy Business, including Information Technology Systems providing capabilities consistent
with the arrangements in place for the Retail Energy Business as of the Third A&R Date. RERH
Holdings and its Subsidiaries (a) own all modifications made by RERH Holdings and its Subsidiaries
to the software licensed by SAP America, Inc., (the “SAP Software”) with specific
application to the Retail Energy Business of RERH Holdings and its Subsidiaries, and (b) have
access to the benefits of all other modifications to the SAP Software made by RERH Holdings and its
Subsidiaries related to the Retail Energy Business of RERH Holdings and its Subsidiaries (including
through the services provided under the IT Service Agreement or the Transition Services Agreement
or licenses provided under the IP License Agreement).

          5.22. Marks. On the Third A&R Date, RERH Holdings and its Subsidiaries own or have access
to (through arm’s length licenses and other arrangements) the Marks.

          Section 6. Affirmative Covenants. From the Third A&R Date until the Credit Sleeve
Termination Date, the Reliant Retail Obligors shall, and shall cause each of their Subsidiaries,
to:

          6.01. Financial Statements. Deliver to the Sleeve Provider, in form and detail reasonably
satisfactory to the Sleeve Provider:

          (a) as soon as available, but in any event within 90 days after the end of each Fiscal Year of
RERH Holdings, an audited consolidated balance sheet of RERH Holdings and its consolidated
Subsidiaries as at the end of such Fiscal Year, and the related consolidated statements of income
or operations, stockholders’ equity, comprehensive income (loss) and cash flows for such Fiscal
Year, setting forth in each case, the figures as of the end of, and for, the previous Fiscal Year,
all in reasonable detail and prepared in accordance with GAAP, such consolidated statements to be
audited and accompanied by a report and opinion of an independent registered public accounting firm
of nationally recognized standing, which report and opinion shall be prepared in accordance with
the standards of the Public Company

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Accounting Oversight Board or its successor and shall not be subject to any “going concern” or
like qualification or exception;

          (b) as soon as available, but in any event within 50 days after the end of each of the first
three Fiscal Quarters of each Fiscal Year of RERH Holdings, an unaudited consolidated balance sheet
of RERH Holdings and its consolidated Subsidiaries as at the end of such Fiscal Quarter, and the
related unaudited consolidated statements of income or operations for such Fiscal Quarter and for
the portion of RERH Holdings’ Fiscal Year to date then ended and cash flows for the portion of RERH
Holdings’ Fiscal Year to date then ended, setting forth in each case (beginning with Fiscal Quarter
ending June 2009) in comparative form the figures for the corresponding Fiscal Quarter of the
previous Fiscal Year and the corresponding portion of the previous Fiscal Year, all in reasonable
detail, certified by a Responsible Officer of RERH Holdings as fairly presenting in all material
respects the financial condition, results of operations and cash flows of RERH Holdings and its
consolidated Subsidiaries in accordance with GAAP, subject only to normal year-end audit
adjustments and the absence of footnotes;

          (c) as soon as available, but in any event within 30 days after the end of each calendar month
(beginning with the first full calendar month following the Third A&R Date), a copy of RERH
Holdings’ internal monthly consolidated corporate reporting package (i.e., flash reports)
in form reasonably acceptable to Sleeve Provider; and

          (d) as soon as available, but in any event within 55 days after the end of each of the first
three Fiscal Quarters of each Fiscal Year, and 95 days after the end of the fourth Fiscal Quarter
of each Fiscal Year, a financial forecast (for each quarter remaining in the then current calendar
year and each of the two following calendar years) for the Retail Energy Business of RERH Holdings
and its Subsidiaries in form reasonably acceptable to the Sleeve Provider.

          6.02. Certificates; Other Information. Deliver to the Sleeve Provider, in form and detail
reasonably satisfactory to the Sleeve Provider:

          (a) concurrently with the delivery of the financial statements referred to in
Sections 6.01(a) and (b), a duly completed Compliance Certificate signed by a
Responsible Officer of RERH Holdings;

          (b) promptly after any request by the Sleeve Provider, copies of any detailed audit reports,
management letters or written recommendations submitted to the board of directors (or the audit
committee of the board of directors) of RERH Holdings by independent accountants in connection with
the accounts or books of RERH Holdings or any Subsidiary or any audit of any of them;

          (c) promptly after the furnishing or receiving thereof, copies of any written notice of
default furnished to, or received from, any holder of debt securities of RERH Holdings or any
Subsidiary thereof pursuant to the terms of any indenture, guarantee or credit or similar agreement
reflecting indebtedness for borrowed money and not otherwise required to be furnished to the Sleeve
Provider pursuant to Section 6.01 or any other clause of this Section;

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          (d) as soon as available, but in any event within 15 days after the end of each month, a
report regarding compliance and non-compliance with the Risk Management Policy having substantially
the same form, scope and level of detail as the monthly risk management report or reports presented
to any vice president of risk control or otherwise to senior management of NRG Parent with respect
to such month; and

          (e) at least three Business Days prior to the occurrence thereof, notice of the anticipated
closing of any Asset Sale or any sale, lease, conveyance or other disposition of any assets made in
reliance on clause (2) of the definition of Asset Sale;

          (f) at the applicable times required by Schedule 1.01(c), the data, reports and other
information set forth therein;

          (g) promptly, such additional information regarding the business, financial or corporate
affairs of RERH Holdings or any Subsidiary, or compliance with the terms of the Transaction
Documents, as the Sleeve Provider may from time to time reasonably request.

          Documents required to be delivered pursuant to Section 6.01(a) or (b) (to the
extent any such documents are included in materials otherwise filed with the SEC) shall be
delivered electronically and when so delivered, shall be deemed to have been delivered on the date
on which RERH Holdings provides such documents electronically, including by email or electronic
posting; provided that: (i) RERH Holdings shall at the request of the Sleeve Provider deliver paper
copies of such documents to the Sleeve Provider and (ii) if documents are electronically posted,
RERH Holdings shall notify the Sleeve Provider (by telecopier or electronic mail) of the posting.
Notwithstanding anything contained herein, in every instance RERH Holdings shall be required to
provide paper copies of the Compliance Certificates required by Section 6.02(a) to the
Sleeve Provider. Except for such Compliance Certificates, the Sleeve Provider shall have no
obligation to request the delivery or to maintain copies of the documents referred to above, and in
any event shall have no responsibility to monitor compliance by RERH Holdings with any such request
for delivery.

          6.03. Notices. Promptly notify the Sleeve Provider:

     (a) after any Responsible Officer’s obtaining knowledge of (i) the occurrence of any
Default with respect to a Reliant Event of Default and the intended actions of the Reliant
Retail Obligors with respect thereto and (ii) any Level 3 Violation under, and as defined
in, the Risk Management Policy with respect to Approved Markets (as opposed to a Level III
Violation as defined herein);

     (b)   of any matter that has resulted or could reasonably be expected to result in a
Material Adverse Effect; and

     (c)   after any Responsible Officer’s obtaining knowledge of the occurrence of any
ERISA Event or of any actual or reasonably likely contribution failure under Code Section
412, or ERISA Section 302 with respect to any Pension Plan or the filing of an application
seeking waiver of any potential contribution failure that either individually or in the
aggregate could reasonably be expected to result in a Material Adverse Effect.

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Each notice pursuant to this Section shall be accompanied by a statement of a Responsible Officer
of the applicable Reliant Retail Obligor setting forth details of the occurrence referred to
therein and stating what action the applicable Reliant Retail Obligor has taken and proposes to
take with respect thereto. Each notice pursuant to Section 6.03(a) shall describe with
particularity any and all provisions of this Agreement and any other Transaction Document that have
been breached.

          6.04. Payment of Obligations. Pay and discharge as the same shall become due and payable
(a) all material tax liabilities, assessments and governmental charges or levies upon it or its
properties or assets, unless the same are being contested in good faith by appropriate proceedings
diligently conducted and adequate reserves in accordance with GAAP are being maintained by each
Reliant Retail Obligor; and (b) all lawful claims which, if unpaid, would by law become a Lien upon
its property that is not a Permitted Lien.

          6.05. Preservation of Existence, Etc.. Preserve, renew and maintain in full force and
effect its legal existence and good standing under the Laws of the jurisdiction of its organization
except in a transaction permitted by Section 7.04, 7.05 or 7.06, (b) take
all reasonable action to maintain all rights, privileges, permits, licenses and franchises
necessary or desirable in the normal conduct of its business, except to the extent that failure to
do so could not reasonably be expected to have a Material Adverse Effect; and (c) preserve or renew
all of its patents, trademarks, trade names and service marks registered in the United States of
America, the non-preservation of which could reasonably be expected to have a Material Adverse
Effect.

          6.06. Maintenance of Properties. (a) Maintain, preserve and protect all of its material
properties and equipment necessary in the operation of its business in good working order and
condition, ordinary wear and tear excepted; (b) make all necessary repairs thereto and renewals and
replacements thereof; and (c) use the standard of care typical in the industry in the operation and
maintenance of its facilities, in each of cases (a), (b) and (c), except where the failure to do so
could not reasonably be expected to have a Material Adverse Effect.

          6.07. Maintenance of Insurance. Maintain with financially sound and reputable insurance
companies (provided, however, that there shall be no breach of this Section 6.07 if any
such insurer becomes financially unsound and the applicable Reliant Retail Obligor obtains
reasonably promptly insurance coverage from a different financially sound insurer), insurance with
respect to its properties and business against loss or damage of the kinds customarily insured
against by Persons of same or similar size engaged in the same or similar business, of such types
and in such amounts (after giving effect to any self-insurance compatible with the following
standards) as are customarily carried under similar circumstances by such other Persons and
providing for not less than 30 days’ (or such other period as required by law) prior notice to the
Sleeve Provider and Collateral Trustee of termination, lapse or cancellation of such insurance;
provided that such insurance may be under policies obtained by NRG Parent.

          6.08. Compliance with Laws. Comply in all material respects with the requirements of all
Laws and all orders, writs, injunctions and decrees applicable to it or to its business or
property, except in such instances in which (a) such requirement of Law or order, writ, injunction
or decree is being contested in good faith by appropriate proceedings diligently

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conducted or (b) the failure to comply therewith could not reasonably be expected to have a
Material Adverse Effect.

          6.09. Books and Records. (a) Maintain proper books of record and account, in which entries
in conformity with GAAP consistently applied shall be made of all financial transactions and
matters involving the assets and business of the Reliant Retail Obligors and (b) maintain such
books of record and account in material conformity with all applicable requirements of any
Governmental Authority having regulatory jurisdiction over the Reliant Retail Obligors.

          6.10. Inspection Rights. Permit representatives and independent contractors of the Sleeve
Provider to visit and inspect any of its properties, to examine its corporate, financial and
operating records, and make copies thereof or abstracts therefrom, and to discuss its affairs,
finances and accounts with its officers, and independent public accountants at such reasonable
times during normal business hours and as often as may be reasonably desired, upon reasonable
advance notice to REPS, all at the expense of the Reliant Retail Obligors, and the Reliant Retail
Obligors will pay up to $100,000 during any contract year to the extent of the third party expenses
of the Sleeve Provider incurred in connection therewith (but the Reliant Retail Obligors shall pay
no further expenses in connection therewith); provided that, the foregoing shall include permitting
one representative of the Sleeve Provider to retain an office in the retail office space of the
Reliant Retail Obligors with access to the information set forth in Schedule 1.01(c) and to
appropriate personnel of the Reliant Retail Obligors and the Reliant Parent and the administrative
floor on which such representative’s office is located (but not access to the trading floor) during
each Business Day; provided further that when a Reliant Event of Default exists the Sleeve Provider
(or any of their respective representatives or independent contractors) may do any of the foregoing
at the expense of the Reliant Retail Obligors, to the extent reasonable under the circumstances,
without being subject to the expense limit described above, and at any time during normal business
hours and without advance notice.

          6.11. Addition and Removal of Transaction Parties; Collateral Matters; Waterfall.

          (a) (i) Promptly and in any event within thirty (30) Business Days after any Reliant Retail
Obligor creates or acquires any new Subsidiary, whether or not the acquisition or creation of such
new Subsidiary is permitted hereunder, deliver to the Sleeve Provider and Collateral Trustee the
following with respect to such Subsidiary (as to each such delivery, each a “Designated
Subsidiary”): (A) Joinder Agreements under this Agreement and Joinder Agreements under, and as
such term is defined in, the Collateral Trust Agreement pursuant to which, among other things, the
Designated Subsidiary shall become a party to this Agreement and the Collateral Trust Agreement and
the Security Agreement, (B) appropriate UCC-1 financing statements with respect to the collateral
under the Security Agreement, (C) all applicable Lien searches, (D) Organizational Documents and
other documents of the type previously provided with respect to Reliant Retail Obligors, (E) a
written opinion of counsel covering those matters addressed in the opinion delivered on the Initial
Effective Date but limited to the Designated Subsidiary, (F) such other security documents as may
be reasonably requested by the Sleeve Provider or its counsel and all of the foregoing in form and
substance reasonably satisfactory to the Sleeve Provider and its counsel, and (G) certificates or
other

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instruments (if any) representing all of the Equity Interests in the Designated Subsidiary
owned by RERH Holdings or its Subsidiaries together with an undated stock power (or other
appropriate document) executed in blank for each such certificate or other instrument.

          (ii) If any Subsidiary of RERH Holdings is, or will be, sold or otherwise transferred or
disposed of in connection with any transaction not prohibited by this Agreement, the Merrill
Parties shall take the actions described in Section 12.04(d) with respect thereto and shall
release such Subsidiary from this Agreement and any obligations with respect to the Credit Sleeve
Obligations and make or approve any conforming changes reasonably requested by REPS in the
Transaction Documents necessary to implement such release in the reasonable discretion of the
Merrill Parties.

          (b) At any time and from time to time, promptly execute and deliver any and all further
instruments and documents and take all such other action as the Sleeve Provider and the Collateral
Trustee may reasonably deem necessary or desirable in obtaining the full benefits of, or in
perfecting and preserving, the Reimbursement Guarantees and the Liens under the Security Documents.

          (c) Have all revenues of the Reliant Retail Obligors, all working capital facility proceeds,
all proceeds of asset sales and all other amounts from time to time received by the Reliant Retail
Obligors paid directly to or promptly deposited to the Collateral Accounts (except for proceeds of
any Required Equity Contribution, which shall be applied in accordance with Section 6.18,
and except for proceeds of asset sales used to close out existing Power and Hedging Contracts
related to the supply for the assets sold (I) in accordance with Section 7.05 or (II) in
accordance with clause (2) of the definition of Asset Sale), and distribute or instruct the
Collateral Trustee to distribute funds in the Collateral Accounts on each Business Day, or with
such other frequency (but at least monthly and on each Monthly Payment Date) as reasonably
determined by the Reliant Retail Obligors in their business judgment, in the following manner and
priority:

     (i) (A) to the extent the same are held on behalf of third parties, or owed to third
parties for amounts collected or billed on behalf of third parties, to the application
intended for such funds, including customer deposits collected by any Reliant Retail
Obligors required by the PUCT to be segregated or held by the PUCT or in an account
controlled by the PUCT or held in any other arrangement required by the PUCT (to the extent
the same becomes applicable as a result of change in ERCOT rules and regulations), to third
parties for third party refunds or deposits, transmission and distribution service providers
for their charges collected on their behalf, Governmental Authorities for sales or usage
taxes which are required to be or have been agreed to be collected and paid to them and to
the GLO for payment of the GLO Amount, (B) to Governmental Authorities for taxes and other
amounts due and payable by the Reliant Retail Obligors and their Subsidiaries to such
Governmental Authorities in their capacities as such (and not in their capacities as
Governmental Customers) excluding for this purpose (x) U.S. federal income taxes, and (y)
any state or local taxes other than Applicable State Taxes, (C) to the directors, officers
and employees of the Reliant Retail Obligors for salary, bonus and other compensation and
amounts then due and payable to

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such Persons, and (D) to the IT Trust for payment of all amounts due from the Reliant
Retail Obligors under the IT Service Agreement;

     (ii) on each date not later than 10 Business Days following the filing of any state or
local tax return that relates to Allocable State Taxes, the State Tax Distribution Amount;

     (iii) to the Collateral Trustee for the payment of all amounts due to the Collateral
Trustee under the terms of the Security Documents, including reasonable legal fees, costs,
and other liabilities of any kind incurred by the Collateral Trustee in connection with the
Security Documents, Collateral Trustee’s Fees (as defined in the Collateral Trust
Agreement), and payments to or incurred by any Agent (as defined in the Collateral Trust
Agreement), and including reimbursement obligations to Secured Counterparties that have made
advance payments to the Collateral Trustee for payment of the foregoing;

     (iv) (A) to the Accepted Counterparties for payment of all amounts then due and payable
under the Power and Hedging Contracts (including the MLCI/REPS ISDA), (B) to third party
service and goods providers (other than any Replacement Sleeve Provider or Replacement
Working Capital Facility Provider), (C) to other holders of Permitted Debt for payment of
all amounts then due and payable with respect thereto (other than any Replacement Sleeve
Provider or Replacement Working Capital Facility Provider), (D) to Governmental Customers,
including Approved ISOs and the GLO, for all amounts due and payable to Governmental
Customers in connection with the Retail Energy Business, (E) to energy brokers engaged for
all amounts due and payable to such brokers in the ordinary course of the Retail Energy
Business, (F) to the payment of all amounts then due and payable under the Reliant Power
Purchase Agreements, (G) to the payment of all amounts then due and payable under the NRG
Power Purchase Agreements and (H) to Accepted Exchanges for payments of amounts or postings
then due and payable in connection with EFS Transactions, EOO Transactions and ICE Block
Transactions, together with retention in the Collateral Accounts in an amount equal to all
funds received from transactions on an Accepted Exchange which will be required to be
returned to the Accepted Exchange to complete transactions contemplated in Section
2.03 until such transactions are complete;

     (v) (A) to the ML Guarantee Provider and Sleeve Provider for payment of interest and
principal and other Working Capital Obligations then due and payable under the Working
Capital Facility and (B) to the extent applicable, to any Replacement Working Capital
Provider for payment of interest and principal and other obligations under the related
Replacement Working Capital Facility in accordance with the terms hereof then due and
payable;

     (vi) (A) to the ML Guarantee Provider and Sleeve Provider for payment of the
Reimbursement Obligations and other Credit Sleeve Obligations then due and payable under
this Agreement, including, on each Monthly Payment Date, the Monthly Sleeve Fees, (B) to the
Sleeve Provider, the amount of any cash required to be posted to the Sleeve Provider
pursuant to Section 6.18, (C) to the extent applicable, to any

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Replacement Sleeve Provider for payment of any credit support, reimbursement, or
related obligations provided by such Replacement Sleeve Provider in accordance with the
terms hereof then due and payable, and (D) to retention in the Collateral Accounts in an
amount equal to all Deferred Reimbursement Obligations and interest related thereto;
provided that, in the event that funds in the Collateral Accounts are insufficient to
completely satisfy the payment obligations described in this clause to Sleeve Provider and
any Replacement Sleeve Provider, such funds shall be applied equally and ratably between the
Sleeve Provider and any Replacement Sleeve Provider in proportion to the respective amounts
then due and payable to them;

     (vii) (A) to NRG Parent for payment of all amounts due under the NRG Parent Services
Agreement (including, any Federal Tax Payable Amount), and (B) to REI for payment of all
amounts due under the Transition Services Agreement; provided that, in the event that funds
in the Collateral Accounts are insufficient to completely satisfy the payment obligations
described in this clause to NRG Parent and REI, such funds shall be applied equally and
ratably between NRG Parent and REI in proportion to the respective amounts then due and
payable to them;

     (viii) to the payment of any other obligations of the Reliant Retail Obligors then due
and payable (other than any Working Capital Adjustment Amount and any amount payable under
the Master Separation Agreement);

     (ix) to the Working Capital Facility Provider for pre-payment of all amounts
outstanding under the Working Capital Facility; provided that, so long as no Reliant Default
or Event of Default has occurred and is continuing, and so long as the same would then be
permitted to be drawn in accordance with the Working Capital Facility, REPS shall not be
required to make any prepayment to the extent that after giving effect thereto the
outstanding principal balance of the Working Capital Facility would be less than
$25,000,000;

     (x) at the election of the Reliant Retail Obligors, (A) to NRG Retail for payment of
any Working Capital Adjustment Amount then due and payable or (B) to NRG Retail for the
payment of any amounts then due and payable under the Master Separation Agreement, in each
case, solely to the extent that after giving effect to such payments (i) Adjusted Working
Capital would be at least equal to $200,000,000 on each day during the immediately
succeeding 30 days (as reasonably determined by RERH) and (ii) the amount of funds remaining
in the Collateral Accounts after application under this clause (x) would be at least equal
to outstanding principal balance of the Working Capital Facility;

     (xi) on each Monthly Payment Date commencing with the Monthly Payment Date occurring in
June 2009, all remaining funds after application under clauses (i) through (x) above shall
be posted to the Merrill Parties solely to the extent that after giving effect to such
postings on such Monthly Payment Date (A) Adjusted Working Capital would be at least equal
to $200,000,000 on each day during the 30 day period immediately succeeding such Monthly
Payment Date (as reasonably determined by RERH) and (B) the amount of funds remaining in the
Collateral Accounts after

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application under this clause (xi) would be at least equal to the outstanding principal
balance of the Working Capital Facility; provided that during an Unwind Period, at the
election of the Reliant Retail Obligors, an amount not in excess of 50% of any amounts that
would otherwise be required to be posted to the Merrill Parties under this clause (xi) may
be used to post cash collateral in accordance with Section 2.01(b); and

     (xii) after application under clauses (i) through (xi) above, to be retained in the
Collateral Accounts;

provided, however, that during the existence of any Reliant Event of Default, the Reliant Retail
Obligors shall distribute, or shall instruct the Collateral Trustee to distribute, funds in the
Collateral Accounts from time to time as directed by the Sleeve Provider.

          6.12. Further Assurances. Promptly upon request by the Sleeve Provider, (a) correct any
material defect or error that may be discovered in any Transaction Document or in the execution,
acknowledgment, filing or recordation thereof, and (b) do, execute, acknowledge, deliver, record,
re-record, file, re-file, register and re-register any and all such further acts, deeds,
certificates, assurances and other instruments as the Sleeve Provider may reasonably require from
time to time in order to (i) carry out more effectively the purposes of the Transaction Documents,
(ii) to the fullest extent permitted by applicable law, subject any Reliant Retail Obligors’
properties, assets, rights or interests to the Liens now or hereafter intended to be covered by any
of the Transaction Documents, (iii) perfect and maintain the validity, effectiveness and priority
of any of the Transaction Documents and any of the Liens intended to be created thereunder (subject
to Permitted Liens) and (iv) assure, convey, grant, assign, transfer, preserve, protect and confirm
more effectively unto the Merrill Parties the rights granted or now or hereafter intended to be
granted to the Merrill Parties under any Transaction Document or under any other instrument
executed in connection with any Transaction Document to which RERH Holdings or any of its
Subsidiaries is or is to be a party.

          6.13. Risk Management Policy.

          Shall take the following actions with respect to the Risk Management Policy:

          (a) The Reliant Retail Obligors shall maintain in effect the Risk Management Policy with
respect to Approved Markets. The Reliant Retail Obligors may waive the Risk Management Policy with
respect to Approved Markets with respect to individual actions, provided that any such waiver shall
require prior written approval of the Sleeve Provider, which shall not be unreasonably withheld or
delayed, and shall be responded to in any event within three Business Days. The Reliant Retail
Obligors may amend or otherwise modify in general the Risk Management Policy with respect to
Approved Markets, provided that REPS shall promptly provide to the Sleeve Provider copies of final
requests for such general amendments or modifications to the Risk Management Policy promptly after
providing such final requests to senior management, and before becoming effective such amendments
or modifications shall be approved by the Sleeve Provider, which approval shall not be unreasonably
withheld or delayed, and shall be responded to in any event within three Business Days.

          (b) The Reliant Retail Obligors shall comply with the Risk Management

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Policy to the extent required by the following:

     (i) If there shall occur any violation of any Risk Limit as set forth in any Risk Limit
Report, the Reliant Retail Obligors shall have three Business Days to cure the same after
notice thereof delivered to or received from the Sleeve Provider or, with respect any
violation under clause (a) of the definition of Risk Limit, any Responsible Officer or other
executive officer of REPS obtaining knowledge of such occurrence; provided that if at any
time the mark-to-market loss on position(s) in violation of the Risk Limits exceeds
$25,000,000, the Reliant Retail Obligors shall have only one Business Day after the date of
the delivery or receipt of notice or, with respect to any violation under clause (a) of the
definition of Risk Limit, knowledge to cure the same such that the position(s) in violation
do not exceed such threshold (however, if such threshold is exceeded during the last day of
any three Business Day cure period, such three Business Day cure period shall be extended
through the following Business Day such that the Reliant Retail Obligors shall have the
fourth Business Day to cure such violation). If cure is not effected within such three (or
four) Business Day period, then as the Sleeve Provider’s sole remedy with respect to such
violation, other than under Section 6.13(b)(ii), the Sleeve Provider shall have the
right to enter into hedges with REPS to effect the cure at prices consistent with the prices
the Sleeve Provider would use in transactions with third parties at the applicable times and
in the applicable volumes. In exercising such right, Sleeve Provider will use the same
standard of care as Sleeve Provider uses in conducting transactions to correct risk policy
violations under Sleeve Provider’s risk policies.

     (ii) In addition to the rights of Sleeve Provider under Section 6.13(b)(i), if
there shall occur any Level III Violation, after providing notice thereof to Sleeve Provider
in accordance with Section 6.13(a), at the Sleeve Provider’s request the Reliant
Retail Obligors will take the following actions:

          (A) Notify immediately the Chief Executive Officer, Chief Financial Officer, Chief Risk
Officer and Controller of the Level III Violation;

          (B) Present to the Merrill Parties within five Business Days a Working Plan that has
been approved by the Chief Executive Officer;

          (C) Present to Merrill Parties within 30 Business Days a Remediation Plan that has been
approved by the Chief Executive Officer. The Merrill Parties shall have two Business Days
after receipt of such Remediation Plan to consult with the Reliant Parties and review and
agree upon the same. If the Merrill Parties and the Reliant Retail Obligors do not mutually
agree on the Remediation Plan at the end of such two Business Day period, then a third-party
evaluator chosen from the list set forth in Schedule 1.01(a) shall be engaged to
mediate promptly the matters in dispute; and

          (D) Submit the Remediation Plan to the Audit Committee promptly after its determination
in accordance with paragraph (C) above. If the Audit Committee does not approve the
Remediation Plan within six Business Days after submission, the Reliant Retail Obligors
shall consult with the Merrill Parties and make reasonable

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modifications to the Remediation Plan based upon comments from the Audit Committee, and
resubmit the same within ten Business Days after the end of such six Business Day period.

It shall be a Reliant Event of Default (a “Risk Management Event of Default”) if the
Reliant Retail Obligors (1) do not comply with the process provided for in Section
6.13(b)(ii)(A) through (D), and the same is not cured within two Business Days, or (2)
if the resubmitted Remediation Plan described in Section 6.13(b)(ii)(D) above is not
implemented by the Reliant Retail Obligors in all material respects. A Risk Management
Event of Default shall be the sole Reliant Events of Default or Defaults with respect
thereto for any non-compliance with the Risk Management Policy or breach of Section
6.13(b).

          6.14. Employees. Have sufficient officers and employees that, taken together with the
services provided under arm’s length service contracts (including the NRG Parent Service Agreement
and the Transition Services Agreement, if then in effect), RERH Holdings and its Subsidiaries can
run the Retail Energy Business in a manner consistent with the business operations of the Retail
Energy Business as of the Third A&R Date and provide the Retail Provided Services in accordance
with the NRG Parent Services Agreement.

          6.15. Information Technology Systems. Own or have access to (through arm’s length
contracts including the IT Service Agreement, the Transition Services Agreement, the NRG Parent
Services Agreement and the IP License Agreement, if the same are then in effect), at all times, the
Information Technology Systems necessary to run the Retail Energy Business, including Information
Technology Systems providing capabilities consistent with the arrangements in place for the Retail
Energy Business as of the Third A&R Date and provide the Retail Provided Services in accordance
with the NRG Parent Services Agreement.

          6.16. Marks. Own the Marks necessary to run the Retail Energy Business using the “Reliant”
name consistent with the arrangements in place for the Retail Energy Business as of the Third A&R
Date.

          6.17. NRG Parent Services Agreement.

     (a) Promptly upon receipt, furnish to the Sleeve Provider the Corporate Cost Center Allocation
under the NRG Parent Services Agreement for each Fiscal Quarter contemplated by Section
5.1(b) of the NRG Parent Services Agreement, including the cost center basis for such Corporate
Cost Center Allocation as between the cost centers referred to on Exhibit C to the NRG Parent
Services Agreement; provided that at the option of REPS, certain of the cost centers may be
reported on a consolidated basis. The Reliant Retail Obligors shall not approve any change in the
methodology for allocation of the costs and expenses giving rise to the Corporate Cost Center
Allocation referred to on Exhibit B to the NRG Parent Services Agreement proposed by NRG
Parent without giving 30 days prior written notice to the Sleeve Provider and, in the event NRG
Parent proposes to change the methodology for allocation of such costs and expenses in a manner
materially adverse to the Reliant Retail Obligors (it being expressly understood that an increase
is not in and of itself “materially adverse”), the Reliant Retail Obligors shall not

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approve such change without the approval of the Sleeve Provider, such approval not to be
unreasonably withheld or delayed.

     (b) Commencing with the 2010 Fiscal Year, consult with the Sleeve Provider in the event that
the Corporate Cost Center Allocation for any Fiscal Year reflects an increase of more than 5% over
the prior Fiscal Year. In such case, and to the extent that third-party suppliers could reasonably
be expected to provide all or certain of the Administrative Services provided under the NRG Parent
Services Agreement on a more cost effective basis than under the NRG Parent Service Agreement
(taking into account all relevant factors including demobilization and transition costs), REPS
shall solicit as promptly as practicable, through an industry standard request for proposals, bids
for comparable administrative services from recognized third-party service providers for those
Administrative Services determined not to be cost effective under the NRG Parent Services
Agreement. Upon receipt and review of the bids procured, REPS shall choose the service provider
best able to provide the administrative services required (and shall furnish a written assessment
of the bids provided to the Sleeve Provider, together with written support for any bids proposed to
be accepted that are not the lowest cost bids). REPS shall promptly deliver the notice required
under Section 3.4(b) of the NRG Parent Services Agreement with respect to any Administrative
Services that are to be performed by third-party service providers in accordance with the
foregoing.

          6.18. Obligation to Post Collateral to Sleeve Provider.

     (a) Upon receipt of any Required Equity Contribution, REPS shall post such Required Equity
Contribution in cash to the Sleeve Provider.

     (b) The Sleeve Provider hereby unconditionally promises to pay to REPS, with respect to any
Posted Collateral which is cash, interest accruing at a rate per annum equal to the Federal Funds
Rate, for each day, on the Dollar amount of such collateral posted as cash held by the Sleeve
Provider on such day (which has not been theretofore applied or used by the Merrill Parties to
satisfy any Draw Reimbursement Obligation or any other Secured Obligation or otherwise returned to
REPS). Such interest shall be payable monthly in arrears within two Business Days following the
last day of each month and on the Credit Sleeve Termination Date.

     (c) The Sleeve Provider will, notwithstanding Section 9-207 of the New York Uniform Commercial
Code, have the right to (i) sell, pledge, rehypothecate, assign, invest, use, commingle or
otherwise dispose of, or otherwise use in its business any Posted Collateral it holds, free from
any claim or right of any nature whatsoever of the Reliant Retail Obligors, including any equity or
right of redemption by the Reliant Retail Obligors and (ii) register any Posted Collateral in the
name of the Sleeve Provider, its custodian or a nominee for either. Upon the occurrence and
continuance of a Reliant Event of Default, the Merrill Parties shall have, in addition to all other
rights and remedies in favor of a secured party existing at law or equity, the rights and remedies
of a secured party under the UCC with respect to the Posted Collateral, including the right to
apply Posted Collateral in satisfaction of the Secured Obligations.

     (d) Promptly following the occurrence of the Credit Sleeve Termination Date (or concurrently
therewith to the extent that the Reliant Retail Obligors have made arrangements

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satisfactory to the Merrill Parties to cause the occurrence of the Credit Sleeve Termination Date
in accordance with Section 6.19(b) below) and the date on which all other Secured
Obligations have been paid or satisfied in full (other than indemnities and any similar obligations
of the Reliant Retail Obligors not then due and payable and that expressly survive termination of
this Agreement and the other Transaction Documents), the Merrill Parties shall return all Posted
Collateral, together with any accrued interest, to REPS which has not been theretofore applied and
will not be concurrently applied in connection with arrangements made in accordance with
Section 6.19(d) below or otherwise used by the Merrill Parties to satisfy any Draw
Reimbursement Obligation or any other Secured Obligation or otherwise returned to REPS.

          6.19. Credit Sleeve Termination Date and Transition Period.

     (a) The Reliant Retail Obligors shall cause the Credit Sleeve Termination Date to occur on or
prior to November 1, 2010. Except as expressly provided in clause (d) below, the “Credit
Sleeve Termination Date” shall not occur until the date on which all Merrill Collateral, including
all ML Guarantees, posted by the Merrill Parties have been returned to the Merrill Parties and the
Merrill Parties have been legally discharged from all obligations in respect of the transactions
contemplated hereby and all ML Guarantees have been terminated, and on which all other obligations
owed to the Merrill Parties hereunder and under the other Transaction Documents have been paid and
satisfied in full (other than indemnities and any similar obligations of the Reliant Retail
Obligors not then due and payable and that expressly survive termination of this Agreement and the
other Transaction Documents).

     (b) The Reliant Retail Obligors shall, on or prior to the Transition Start Date, inform each
Accepted Counterparty and each other beneficiary of any ML Collateral, including each beneficiary
of any ML Guarantee, that on November 1, 2010 (or such earlier date as the Reliant Retail Obligors
may elect to cause the “Credit Sleeve Termination Date”, such date, the “Transition End
Date”), that the Reliant Retail Obligors desire for such Accepted Counterparty or other
beneficiary, as the case may be, to release all ML Collateral, including each ML Guarantee, and to
discharge all future obligations of the Merrill Parties to provide or post any future collateral or
ML Guarantee, in exchange for alternate collateral or other arrangements to be negotiated between
the Reliant Retail Obligors and such Accepted Counterparty or other beneficiary, in each case, to
be effective on the Transition End Date. During the Transition Period, the Reliant Retail Obligors
agree to use all commercially reasonable efforts to effect the release and discharge of all ML
Collateral on the Transition End Date in accordance with the foregoing sentence, and shall on or
prior to the second Business Day of each calendar week during the Transition Period, provide to the
Merrill Parties a reasonably detailed summary of the progress of negotiations with each Accepted
Counterparty and each other beneficiary in connection with the Transition End Date. Nothing in
this clause (b), or any action or inaction of any Accepted Counterparty or any other
beneficiary of any ML Collateral, shall relieve the Reliant Retail Obligors of the obligation to
cause the Credit Sleeve Termination Date to occur in accordance with clause (a) above.

     (c) Without limiting the generality of clause (b) above, with respect to each Exchange
Traded Contract and each corresponding Mirror OTC Contract that is held by the Reliant Retail
Obligors and the Merrill Parties on the Transition End Date, the Reliant Retail Obligors will, or

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will cause an Affiliate to, (i) enter into a transaction on ICE or NYMEX, as applicable, to
transfer the Sleeve Provider’s position in such Exchange Traded Contract to such Reliant Retail
Obligor or such Affiliate and (ii) close-out each related Mirror OTC Contract (which may be through
novation of the Sleeve Provider’s position under such Mirror OTC Contract to such Affiliate), in
each case, at no cost or expense to the Merrill Parties. Concurrently with the completion of the
foregoing transfers and novations, the Merrill Parties shall be legally discharged from all
obligations under such transactions, the Merrill Parties shall have received the return of all
variation margin and all other ML Collateral posted in connection therewith, and all related ML
Guarantees shall be terminated; provided that nothing in this clause (c) shall relieve the
Reliant Retail Obligors of the obligation to cause the Credit Sleeve Termination Date to occur in
accordance with clause (a) above.

     (d) If, notwithstanding the use of all commercially reasonable efforts by the Reliant Retail
Obligors to effect a full release of the Merrill Parties in accordance with clauses (a) and
(b) above, the Merrill Parties remain obligated in respect of any Accepted Trades on November
1, 2010 under which the aggregate exposure of all such Accepted Trades (expressed in BCFe) is equal
to or less than 30 BCFe (calculated based on the absolute volume of such Accepted Trades, whether a
buy or a sell transaction), then the Reliant Retail Obligors may elect to satisfy their obligations
to release and discharge the Merrill Parties in respect of such Accepted Trades by (i) posting (and
maintaining to the extent required below) cash collateral in an amount at least equal to the Cash
Coverage Amount and (ii) posting (and maintaining to the extent required below) cash collateral or
providing one or more letters of credit satisfactory to the Merrill Parties or a guarantee by a
Person with at least an Investment Grade Credit Rating, for an amount at least equal to the
Additional Coverage Amount (the “Clean-Up Option”). At any time and from time to time
after any such posting or other arrangements have been made, the Reliant Retail Obligors shall be
required to post additional cash collateral to the extent that the Merrill Parties reasonably
determine that the aggregate amount of cash collateral and other support then posted is
insufficient to exceed the actual liabilities of the Merrill Parties at any time following the
exercise of such Clean-Up Option. Until such time as all Merrill Collateral, including all ML
Guarantees, posted by the Merrill Parties have been returned to the Merrill Parties and the Merrill
Parties have been legally discharged from all obligations in respect of the transactions
contemplated hereby and all ML Guarantees have been terminated, and on which all other obligations
owed to the Merrill Parties hereunder and under the other Transaction Documents have been paid and
satisfied in full (other than indemnities and any similar obligations of the Reliant Retail
Obligors not then due and payable and that expressly survive termination of this Agreement and the
other Transaction Documents) and on which all other Secured Obligations have been paid or satisfied
in full (other than indemnities and any similar obligations of the Reliant Retail Obligors not then
due and payable and that expressly survive termination of this Agreement and the other Transaction
Documents), the Merrill Parties shall be entitled to retain and apply all such posted collateral
and any other support in satisfaction of the obligations of the Reliant Retail Obligors.

          6.20. IT Trust Transfer and Allocation Plan.  Shall (a) implement the IT Trust
Transfer and Allocation Plan as promptly as practicable in accordance with its terms pursuant to
documentation in form and substance satisfactory to the Sleeve Provider, (b) cause modifications of
the Transition Services Agreement contemplated by Section 3.2(f) of the

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Purchase and Sale Agreement in form and substance satisfactory to the Sleeve Provider (i) necessary
to implement the IT Trust Transfer and Allocation Plan and (ii) as may be required to ensure that
at all times the Reliant Retail Obligors have access to Information Systems Technology necessary to
run the Retail Energy Business (including providing the Retail Provided Services), including
Information Technology Systems providing capabilities consistent with the arrangements in place for
the Retail Energy Business as of the Third A&R Date and (c) following the complete implementation
of the IT Trust Transfer and Allocation Plan, dissolve the IT Trust in a manner reasonably
satisfactory to the Sleeve Provider.

          Section 7. Negative Covenants. From the Third A&R Date until the Credit Sleeve Termination
Date, the Reliant Retail Obligors shall not, and shall cause their Subsidiaries not to:

          7.01. Liens. Create, incur, assume or otherwise cause or suffer to exist or become
effective any Lien of any kind on any asset now owned or hereafter acquired, except Permitted
Liens.

          7.02. Investments and Acquisitions. Make or hold any Investments (except for Permitted
Investments) or make any Acquisition.

          7.03. Indebtedness. Create, incur, issue, assume, suffer to exist, guarantee or otherwise
become directly or indirectly liable, contingently or otherwise, with respect to any Indebtedness,
and RERH Holdings shall not permit any of its Subsidiaries to issue any shares of preferred stock,
in each case, other than the following (collectively, “Permitted Debt”):

     (a) Indebtedness of RERH Holdings and the Reliant Retail Obligors under this Agreement,
if any, and the Working Capital Facility;

     (b) intercompany Indebtedness (i) between or among Reliant Retail Obligors and (ii)
Indebtedness of Subsidiaries of RERH Holdings that are not Reliant Retail Obligors to
Reliant Retail Obligors; provided that (A) any subsequent issuance or transfer of Equity
Interests that results in any such Indebtedness being held by a Person other than RERH or
any Subsidiary, and (B) any sale or other transfer of any such Indebtedness to a Person that
is not RERH or any Subsidiary shall be deemed, in each case, to constitute an incurrence of
such Indebtedness by RERH or such Subsidiary, as the case may be, that was not permitted by
this clause;

     (c) Indebtedness of RERH Holdings or any of its Subsidiaries in respect of workers’
compensation claims, self-insurance obligations, performance and surety bonds provided by
RERH Holdings or a Subsidiary in the ordinary course of business;

     (d) Indebtedness of RERH Holdings or any of its Subsidiaries arising from the honoring
by a bank or other financial institution of a check, draft or similar instrument
inadvertently drawn against insufficient funds, so long as such Indebtedness is covered
within five Business Days;

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     (e) Indebtedness arising from agreements of RERH Holdings or a Subsidiary providing for
indemnification, adjustment of purchase price or similar obligations, in each case, incurred
or assumed in connection with the disposition of any business, assets or Equity Interests of
a Subsidiary of RERH Holdings; provided that the maximum aggregate liability in respect of
all such Indebtedness shall at no time exceed the gross proceeds (including non-cash
proceeds) actually received by RERH Holdings and/or such Subsidiary in connection with such
disposition;

     (f) Additional Indebtedness of Subsidiaries of RERH Holdings or purchase money
obligations in an aggregate principal amount (or accreted value, as applicable) at any time
outstanding, not to exceed $20,000,000, the proceeds of which are used for, or assumed in
connection with, general corporate purposes of RERH or any of its Subsidiaries, including
for any capital expenditures; provided that (i) except for regularly scheduled amortization
payments in any year not exceeding 5% of original principal amount of such Indebtedness, any
Indebtedness incurred in reliance on this clause (f) shall mature no earlier than 6
months after the Credit Sleeve Termination Date and (ii) the terms of all such Indebtedness
shall permit prepayment thereof at any time from any Person or source at par without any
premium or penalty;

     (g) the Guarantee by (i) Reliant Retail Obligors of Indebtedness of Reliant Retail
Obligors that is otherwise permitted by this Section 7.03, (ii) Reliant Retail
Obligors of Indebtedness of Subsidiaries of RERH Holdings that are not Reliant Retail
Obligors that is otherwise permitted by this Section 7.03 and (iii) RERH of the
obligations of REES under the Amended and Restated Power Purchase Agreement between REES and
FPL Upton Wind II, L.P. dated May 30, 2003, as in effect on the date hereof;

     (h) Indebtedness of Reliant Retail Obligors under Replacement Working Capital
Facilities or in favor of Replacement Sleeve Provider;

     (i) the incurrence by any Subsidiary of RERH Holdings of Indebtedness consisting of (i)
obligations to pay insurance premiums or (ii) take-or-pay obligations contained in supply
agreements, in each case arising in the ordinary course of business and not in connection
with the borrowing of money, Hedging Agreements or Specified Transactions;

     (j) Indebtedness arising out of the NRG Parent Services Agreement; and

     (k) Indebtedness (if any) arising out of the Interest Hedging Obligations and Power and
Hedging Contracts to the extent such agreements are otherwise permitted hereunder.

          7.04. Consolidation and Mergers

     (a) Consolidate or merge with or into another Person, or sell, assign, transfer, convey
or otherwise dispose of all or substantially all of the properties or assets of RERH
Holdings and its Subsidiaries taken as a whole, in one or more related transactions, to
another Person, except that:

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          (i) so long as no Reliant Default exists or would result therefrom, (A) any Subsidiary
of RERH Holdings may consolidate or merge with or into any one or more other Subsidiaries of
RERH Holdings; provided that in the event that a Subsidiary of RERH Holdings is a Reliant
Retail Obligor, such Subsidiary may only consolidate or merge with or into another
Subsidiary of RERH Holdings that is a Reliant Retail Obligor, and (B) any Person may be
merged with or into any Subsidiary of RERH Holdings if the resulting entity is a Wholly
Owned Subsidiary of RERH Holdings, provided that the provisions of Section 6.11(a)
are complied with in connection with any such transaction involving a Subsidiary of RERH
Holdings that is not a Reliant Retail Obligor; and

          (ii) so long as no Reliant Default exists or would result therefrom, any Subsidiary of
RERH Holdings may sell, transfer, assign, convey, lease or otherwise dispose of any or all
of its assets to any one or more other Subsidiaries of RERH Holdings, provided that the
provisions of Section 6.11(a) are complied with in connection with any such
transaction involving a Subsidiary of RERH Holdings that is not a Reliant Retail Obligor.

          (b) In addition, the Reliant Retail Obligors shall not, nor shall they permit any of their
Subsidiaries to, directly or indirectly, lease all or substantially all of their properties or
assets, in one or more related transactions, to any Person that is not a Reliant Retail Obligor.

          (c) Without the prior written consent of the Sleeve Provider, consent to any liquidation,
dissolution or winding up of the IT Trust (except in accordance with the Transition Services
Agreement) or the NRG IT Trust.

          (d) For the avoidance of doubt, nothing in this Section 7.04 is intended to prohibit
any Asset Sale permitted by Section 7.05.

          7.05. Asset Sales.

          (a) Consummate an Asset Sale unless (i) it receives consideration at the time of such Asset
Sale that is not less than $0 and at least equal to the Fair Market Value of the assets issued or
sold or otherwise disposed of (as reasonably determined by such Reliant Retail Obligor), (ii) at
least 90% (or, in the case of an Asset Sale comprised of any tangible personal property, 75%) of
the consideration therefor received in the Asset Sale by RERH Holdings or such Subsidiary is in the
form of cash or Cash Equivalents (which, except for cash used to close out existing Power and
Hedging Contracts related to the supply for the assets sold, shall be applied to the repayment of
any outstanding principal and interest on the Working Capital Facility and payment of outstanding
Reimbursement Obligations then due, with surplus being deemed and available for application in
accordance with Section 6.11(c)) and (iii) it has closed out existing Power and Hedging
Contracts necessary to close out substantially all of the supply for the assets sold (and caused
the return of any ML Guarantee relating to such supply or such assets being sold). For purposes of
this provision, each of the following shall be deemed to be cash:

     (A) any liabilities, as shown on RERH Holdings’ most recent consolidated balance sheet,
of the Reliant Retail Obligors (other than contingent liabilities and

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liabilities that are by their terms subordinated to the Credit Sleeve Obligations) that
are assumed by the transferee of any such assets pursuant to a customary novation agreement
that releases such Reliant Retail Obligor from further liability;

     (B) any securities, notes or other Obligations received by a Reliant Retail Obligor
from such transferee that are converted (by sale or other disposition) by such Reliant
Retail Obligor into cash, to the extent of the cash received in that conversion within 60
days; and

     (C) reasonable reserves for indemnity obligations and purchase price adjustments funded
in cash or held back by the purchaser;

          (b) Consummate any sale, lease, conveyance or other disposition (i) comprised of Residential
Mass Customers, (ii) comprised of any Mark, or any rights in any Information Technology Systems
(except for termination or expiration of licenses or leases for Information Technology Systems in
the ordinary course of business), the IT Trust (except in accordance with the IT Trust Transfer and
Allocation Plan) or the NRG IT Trust, (iii) comprised of the Equity Interests in REPS or any other
Subsidiary of RERH Holdings, (iv) comprised of all or substantially all of the assets of REPS or
any other Subsidiary of RERH Holdings or (v) to the extent a Reliant Default or Reliant Event of
Default would result therefrom.

REPS agrees to keep the Merrill Parties reasonably apprised of all negotiations and the material
terms and conditions of any proposed sale, lease, conveyance or other disposition of any C&I
Customers, and to the extent the Merrill Parties elect to provide any comments to REPS with respect
to the terms and conditions or documentation of any such sale or other disposition (which comments
are provided to REPS within a commercially reasonable time period), REPS agrees such comments will
be accepted to the extent determined by the Reliant Retail Obligors using their reasonable business
judgment.

          7.06. Limitation on Issuances and Sales of Equity Interests. Transfer, convey, sell, lease
or otherwise dispose of any Equity Interests in any Subsidiary of RERH Holdings to any Person
(other than RERH or a Wholly Owned Subsidiary of RERH). In addition, the Reliant Retail Obligors
will not permit any Wholly Owned Subsidiary of RERH Holdings to issue any of its Equity Interests
(other than, if necessary, shares of its Capital Stock constituting directors’ qualifying shares)
to any Person other than to RERH Holdings or a Wholly Owned Subsidiary of RERH Holdings.

          7.07. Restricted Payments. Make any Restricted Payment by way of the payment of any
dividend or distribution in cash or Cash Equivalents on any Equity Interests of RERH Holdings; or
otherwise, make any Restricted Payment except for the following:

     (a) the payment of any dividend (or, in the case of any partnership or limited
liability company, any similar distribution) by a Subsidiary of RERH Holdings to RERH
Holdings or another Subsidiary of RERH Holdings;

     (b) the payment of any Working Capital Adjustment Amount to the extent permitted by
Section 6.11(c)(x); and

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     (c) the transactions with any Person (including any Affiliate of RERH Holdings) set
forth in clauses (b)(i) and (b)(iv) of Section 7.09 and the funding
of any obligations in connection therewith.

          7.08. Line of Business. Engage, or permit any Subsidiary to engage, in any business other
than the Retail Energy Business, except to such extent as would not be material to the Reliant
Retail Obligors taken as a whole; provided that on and after the Third A&R Date the Reliant Retail
Obligors shall not enter into any Prohibited New C&I Contracts.

          7.09. Transactions with Affiliates.

          (a) Make any payment to, or sell, lease, transfer or otherwise dispose of any of its
properties or assets to, or purchase any property or assets from, or enter into or make or amend
any transaction, contract, agreement, understanding, loan, advance or guarantee with, or for the
benefit of, any Affiliate of RERH Holdings (each, an “Affiliate Transaction”), in each case
without the approval of the Sleeve Provider, which shall not be unreasonably withheld or delayed.

          (b) The following items shall not be deemed to be Affiliate Transactions and, therefore, shall
not be subject to the provisions of Section 7.09(a):

     (i) any employment agreement or director’s engagement agreement, employee
benefit plan, officer and director indemnification agreement or any similar
arrangement entered into by RERH Holdings or any of its Subsidiaries in the ordinary
course of business or approved by its Board of Directors;

     (ii) transactions between or among the Reliant Retail Obligors;

     (iii) payment of reasonable directors’ fees to Persons who are not otherwise
Affiliates of RERH Holdings;

     (iv) any issuance of Equity Interests of RERH Holdings to NRG Parent;

     (v) Restricted Payments that do not violate the provisions of
Section 7.07;

     (vi) loans or advances to employees in the ordinary course of business not to
exceed $2,000,000 in the aggregate outstanding at any one time;

     (vii) the NRG Parent Services Agreement;

     (viii) the Transition Services Agreement;

     (ix) the NRG Power Purchase Agreements;

     (x) the IT Trust Transfer and Allocation Plan, the IT Service Agreement,
the NRG IT Trust, and IT Trust Management Agreement;

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     (xi) [Intentionally Deleted];

     (xii) any other Transaction Documents,

     (xiii) subject to Section 7.05, any payments to, dispositions of
properties or assets to, purchases of property or assets from, or entering into or
making or amending any transaction, contract, agreement, understanding, loan,
advance or guarantee with, or for the benefit of, an Affiliate of RERH Holdings to
the extent any one such transaction or group of related transactions (A) is on terms
that are no less favorable (as reasonably determined by RERH Holdings) to RERH
Holdings or the relevant Subsidiary than those that would have been obtained in a
comparable transaction by RERH Holdings or such Subsidiary with an unrelated Person
and (B) does not involve consideration in excess of $5,000,000 when taken together
with all other transactions pursuant to this clause (xiii);

     (xiv) any Permitted Investments under clause (g) of the definition of Permitted
Investment arising under any of the foregoing agreements; and

     (xv) any agreement to do any of the foregoing.

          (c) Notwithstanding the foregoing clause (b), the Reliant Retail Obligors shall not
accept any Information Technology Systems from or on behalf of NRG Parent or an Affiliate of NRG
Parent (other than the Reliant Retail Obligors and their subsidiaries) that replace any Information
Technology Systems which were provided by IT Trust to the Reliant Retail Obligors immediately prior
to the Third A&R Date or are owned or operated (or received directly from third parties) by the
Reliant Retail Obligors after the Third A&R Date (including, in all instances, any replacements of
such replacements) unless all right, title and interest of NRG Parent or an Affiliate of NRG Parent
(other than the Reliant Retail Obligors and their subsidiaries) in such Information Technology
Systems is either transferred or conveyed to (i) the Reliant Retail Obligors or (ii) the NRG IT
Trust and made available to the Reliant Retail Obligors in accordance with the terms of the IT
Service Agreement; provided, however, that the Reliant Retail Obligors may accept such Information
Technology Systems as of the Third A&R Date if, within 30 days after the Third A&R Date, such
Information Technology Systems are transferred or conveyed to the NRG IT Trust.

          7.10. Restrictive Agreements. Enter into, incur or permit to exist any agreement or other
arrangement that prohibits, restricts or imposes any condition upon (a) the ability of any of its
Subsidiaries to create, incur or permit to exist any Lien upon any of its property or assets; or
(b) the ability of any of its Subsidiaries to pay dividends or make any other distributions with
respect to any shares of its capital stock or any other Equity Interest or participation in its
profits owned by any Subsidiaries; or (c) the ability of any of its Subsidiaries to make or repay
loans or advances to it or any of its Subsidiaries or to Guarantee Indebtedness of it or any of its
Subsidiaries or to transfer any of its properties or assets to RERH Holdings or any other
Subsidiary; provided that the foregoing shall not apply to (i) restrictions and conditions imposed
by Laws or by any Transaction Document, (ii) customary restrictions and conditions contained in
agreements relating to the sale of a Subsidiary or asset pending such sale; provided that such
restrictions and conditions apply only to the Subsidiary or asset that is to be sold and

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such sale is permitted hereunder, (iii) restrictions or conditions imposed by any agreement
relating to secured Indebtedness not prohibited by this Agreement if such restrictions or
conditions apply only to the property or assets securing such Indebtedness, (iv) customary
non-assignment provisions in any contract, easement or lease, and other customary encumbrances and
restrictions entered into in the ordinary course of business, and (v) restrictions or conditions
contained in any trading, netting, operating, construction, service, supply, purchase, sale or
similar agreement to which any Subsidiary is a party and which is entered into in the ordinary
course of business; provided that such agreement prohibits the encumbrance of solely the property
or assets of such Subsidiary that are the subject of such agreement, the payment rights arising
thereunder and/or the proceeds thereof and not to any other asset or property of such Subsidiary or
the assets or property of any other Subsidiary.

          7.11. Modification and Enforcement of Purchase and Sale Agreement; Transaction Documents.
Consent to any amendment, restatement, supplement, modification, renewal or replacement of, or
enter into any forbearance from exercising any rights with respect to the terms or provisions
contained in, or initiate or acquiesce to the cancellation, termination or suspension of
performance under, the Purchase and Sale Agreement or any Transaction Document, or fail to enforce
the rights of the Reliant Retail Obligors under the Purchase and Sale Agreement or any Transaction
Document (including enforcement of its right to receive any Retail Company Service Fee) in any
manner that would be outside of the reasonable business judgment of the Reliant Retail Obligors
(acting in the case of agreements with NRG Parent or any Subsidiary thereof other than the Reliant
Retail Obligors as if such agreements were with third parties), in each case, without the prior
written consent of the Sleeve Provider, such consent not to be unreasonably withheld or delayed;
provided that, notwithstanding the foregoing, (i) so long as no Reliant Default or Reliant Event of
Default has occurred and is continuing or would result therefrom, REPS may terminate the Working
Capital Facility and (ii) the Reliant Retail Obligors acknowledge and agree that the Sleeve
Provider shall have the right, to the exclusion of the Reliant Retail Obligors, to enforce and
protect all rights of RERH Holdings under the Parent Contribution Agreement.

          7.12. Fiscal Year. Change, permit any of its Subsidiaries to, directly or indirectly
change, its Fiscal Year from a Fiscal Year ending December 31.

          7.13. Specified Transaction. Enter into, or permit any of its Subsidiaries to, directly or
indirectly enter into, any Specified Transaction.

          7.14. Services. Provide, or permit any of its Subsidiaries to provide, commercial revenue
generating services in retail electric markets except for such services described in Schedule
7.14 and such services consented to by the Sleeve Provider, which consent will not be
unreasonably withheld or delayed.

          7.15. Tax Agreements. Enter into, or permit any of its Subsidiaries to enter into,
directly or indirectly, any tax sharing agreement (a) under which cash payments by any Reliant
Retail Obligor with respect to federal income tax shall be made other than in accordance with
Section 6.11(c) or other payments permitted by the Tax Subordination Agreement, (b) under
which any Reliant Retail Obligor accrues liabilities that are not subject to

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subordination terms substantially similar to the subordination provisions of the Tax Subordination
Agreement, or (c) that does not contain non-petition language in substantially the form set forth
in the Tax Subordination Agreement.

          7.16. Posting of Collateral. Post directly or indirectly any collateral with respect to
any power, gas or other commodity purchases or sales or any hedging transactions with any Person
other than (a) collateral postings for transactions outstanding on the Third A&R Date which, as of
the Third A&R Date, are under obligation to be returned to the Reliant Retail Obligors, (b) the
Sleeve Provider, and (c) during an Unwind Period, in connection with power, ancillary services,
transmission, distribution, gas, REC or other commodity purchases or sales, ERCOT requirements or
any hedging transactions entered into in accordance with Section 2.01(b) and, in which
event, only with funds available pursuant to Section 6.11(c)(xi).

          7.17. Accepted Products. Permit the aggregate amount of Accepted Products (measured in
Dollars expended) purchased by RERH Holdings and its Subsidiaries directly or indirectly from
Affiliates of RERH Holdings (other than its Subsidiaries) during any Computation Period to exceed
30% (or during any period after January 1, 2010 and on or prior to July 1, 2010, 40%, and for any
period after July 1, 2010, 50%) of the aggregate amount of all Accepted Products (measured in
Dollars expended) purchased by RERH Holdings and its Subsidiaries during such Computation Period;
provided that for purposes of this Section 7.17, the aggregate Dollars expended by the
Reliant Retail Obligors shall not include payments made to PMI in respect of the REPS to PMI legs
of the Offsetting Trades under the PMI/REPS RW ISDA. For purposes of this Section 7.17 (A)
the month in which Accepted Products shall be deemed “purchased” will be the month in which the
relevant initial cash flow or settlement payment occurs, and not the date of underlying contract,
and (B) the determination of whether a Person is an Affiliate of RERH Holdings shall be made with
reference to such same month.

          7.18. Minimum Consolidated EBITDA. Permit, on the last day of any Fiscal Quarter, the
Consolidated EBITDA of RERH Holdings and its Subsidiaries for the period of four Fiscal Quarters
most recently ended to be less than the amount indicated below:

	 	 	 	 	 
	 	 	Consolidated
	Fiscal Quarter	 	EBITDA
	June 30, 2009

	 	$	150,000,000	 
	September 30, 2009

	 	$	150,000,000	 
	December 31, 2009

	 	$	125,000,000	 
	March 31, 2010

	 	$	100,000,000	 
	June 30, 2010

	 	$	100,000,000	 
	September 30, 2010

	 	$	100,000,000	 

          7.19. NRG Parent Credit Agreement; Senior Notes. Provide any guarantee or security
interest in respect of the NRG Parent Credit Agreement and/or any Senior Notes.

          Section 8. Events of Default.

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          8.01. Reliant Events of Default. Each of the following shall constitute a “Reliant
Event of Default”:

     (a) Non-Payment. Any Reliant Retail Obligor fails to pay within three Business
Days after the same becomes due, any amount payable to any Merrill Party hereunder or under
any other Transaction Document (other than the Working Capital Facility); or

     (b) Specific Covenants. Any Reliant Retail Obligor fails to perform or observe
any term, covenant or agreement contained in Section 6.11 or the separateness
covenants in any Retail Organizational Documents, and such failure continues for five
Business Days after the earlier to occur of (i) such Reliant Retail Obligor’s receiving
notice thereof from Sleeve Provider, or (ii) a Responsible Officer or other executive
officer of a Reliant Retail Obligor obtains knowledge of such occurrence; or

     (c) Other Defaults. Any Reliant Retail Obligor fails to perform or observe any
other covenant or agreement (not specified in clauses (a) or (b) above or not addressed by
clauses (n), (o), (p) or (q) below) contained in any Transaction Document (other than the
Working Capital Facility) on its part to be performed or observed and such failure continues
for 15 days after the earlier to occur of (i) such Reliant Retail Obligor’s receiving notice
thereof from Sleeve Provider, or (ii) a Responsible Officer or other executive officer of
such Reliant Retail Obligor obtains knowledge of such occurrence; or

     (d) Representations and Warranties. Any representation, warranty, certification
or statement of fact made or deemed made by or on behalf of any Reliant Retail Obligor
herein, in any other Transaction Document, or in any document delivered in connection
herewith or therewith shall be incorrect or misleading in any material respect when made or
deemed made; or

     (e) Cross-Default. Any Reliant Retail Obligor, except with respect to payments
described in paragraph (a) above, (i) fails to make any payment when due (whether by
scheduled maturity, required prepayment, acceleration, demand, or otherwise) in respect of
any Indebtedness or Guarantee (other than Indebtedness hereunder or under the Working
Capital Facility) having an aggregate principal amount (including amounts owing to all
creditors under any combined or syndicated credit arrangement) of more than $5,000,000, or
(ii) fails to observe or perform any other agreement or condition relating to any such
Indebtedness (other than Indebtedness hereunder or under the Working Capital Facility) or
Guarantee or contained in any instrument or agreement evidencing, securing or relating
thereto, or any other event occurs, the effect of which default or other event is to cause
such Indebtedness (other than Indebtedness hereunder or under the Working Capital Facility)
to be demanded as a result of such failure, or to become due or to be repurchased, prepaid,
defeased or redeemed (automatically or otherwise), or an offer to repurchase, prepay,
defease or redeem such Indebtedness to be made, prior to its Stated Maturity, or such
Guarantee to become payable or cash collateral in respect thereof to be demanded; or

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     (f) Insolvency Proceedings, Etc. Any Reliant Retail Obligor institutes or
consents to the institution of any proceeding under any Debtor Relief Law, or makes an
assignment for the benefit of creditors; or applies for or consents to the appointment of
any receiver, trustee, custodian, conservator, liquidator, rehabilitator or similar officer
for it or for all or any material part of their respective property; or any receiver,
trustee, custodian, conservator, liquidator, rehabilitator or similar officer is appointed
without the application or consent of such Person and the appointment continues undischarged
or unstayed for 60 calendar days; or any proceeding under any Debtor Relief Law relating to
any such Person or to all or any material part of their respective property is instituted
without the consent of such Person and continues undismissed or unstayed for 60 calendar
days, or an order for relief is entered in any such proceeding; or

     (g) Inability to Pay Debts; Attachment. Any Reliant Retail Obligor becomes
unable or admits in writing its inability or fails generally to pay its debts as they become
due; or

     (h) Judgments. There is entered against any Reliant Retail Obligor a final
judgment or order for the payment of money (other than a judgment for an amount owed under
the Working Capital Facility) in an aggregate amount exceeding $25,000,000 (to the extent
not covered by independent third-party insurance or that has not been paid), and (A)
enforcement proceedings are commenced by any creditor upon such judgment or order, or (B)
within thirty (30) days from the later of (X) the entry of any such judgment or the date of
any such order (as applicable) and (Y) the date any payment is required to be made on or
with respect to any such judgment or order pursuant to the terms thereof, the same shall not
have been paid, discharged or vacated or, in the case of a judgment, stayed pending appeal,
or shall not have been discharged or vacated within thirty (30) days from the entry of a
final order of affirmance on appeal; or

     (i) Invalidity of Documents. (i) Any Security Document shall for any reason
(other than pursuant to the terms thereof or as expressly permitted thereby) cease to create
a valid and perfected first priority Lien (subject to Permitted Liens) on and security
interest in the Collateral purported to be covered thereby; provided that no such defects
pursuant to this clause with respect to a Lien granted or purported to be granted by any of
the Transaction Documents shall give rise to a Reliant Event of Default under this clause
unless such defects shall adversely affect the aggregate value of the Collateral by an
aggregate amount of $25,000,000 or more; or (ii) any Reliant Retail Obligor shall so assert
such invalidity or lack of perfection or priority; or (iii) at any time after its execution
and delivery and for any reason other than as expressly permitted hereunder or thereunder or
satisfaction in full of all the Credit Sleeve Obligations thereunder, any other Transaction
Document ceases to be in full force and effect; or any Reliant Retail Obligor or any other
Person contests in any manner the validity or enforceability of any provision of any other
Transaction Document; or any Reliant Retail Obligor denies that it has any or further
liability or obligation under any other Transaction Document, or purports to revoke,
terminate or rescind any provision of any other Transaction Document; or

     (j) Contribution Agreement Default. NRG Parent shall fail to make the Initial
Contribution on or prior to May 1, 2009 or shall fail to make any other Required Equity

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Contribution within one Business Day after the same becomes due under the Parent
Contribution Agreement, or NRG Parent shall fail to perform or observe any other covenant or
agreement contained in the Parent Contribution Agreement on its part to be performed or
observed and such failure continues for 15 days after the earlier to occur of (i) NRG Parent
receiving notice thereof from Sleeve Provider or (ii) a Responsible Officer or other
executive officer of NRG Parent obtains knowledge of such occurrence; or

     (k) NRG Credit Events. NRG Parent or any of its Significant Subsidiaries
(other than the Exempt Subsidiaries, Excluded Subsidiaries and Unrestricted Subsidiaries) or
any group of Significant Subsidiaries (other than the Exempt Subsidiaries, Excluded
Subsidiaries and Unrestricted Subsidiaries) that, taken together, would constitute
Significant Subsidiaries (i) fails to make any payment when due (whether by scheduled
maturity, required prepayment, acceleration, demand, or otherwise) in respect of any
Indebtedness (or Guarantee) or under any Specified Transaction (in each case, except with
respect to payments described in paragraph (j) above) having an aggregate amount (including
amounts owing to all creditors under any combined or syndicated credit arrangement) of more
than $75,000,000, (ii) fails to observe or perform any other agreement or condition relating
to any such Indebtedness (or Guarantee) or Specified Transaction or contained in any
instrument or agreement evidencing, securing or relating thereto, or any other event occurs,
the effect of which default or other event is to cause such Indebtedness or amounts owning
under such Specified Transaction to be demanded as a result of such failure or to become due
or to be repurchased, prepaid, defeased or redeemed (automatically or otherwise), or an
offer to repurchase, prepay, defease or redeem such Indebtedness to be made, prior to its
Stated Maturity, or such Guarantee to become payable or cash collateral in respect thereof
to be demanded as a result of such failure, or (iii) institutes or consents to the
institution of any proceeding under any Debtor Relief Law, or makes an assignment for the
benefit of creditors; or applies for or consents to the appointment of any receiver,
trustee, custodian, conservator, liquidator, rehabilitator or similar officer for it or for
all or any material part of their respective property; or any receiver, trustee, custodian,
conservator, liquidator, rehabilitator or similar officer is appointed without the
application or consent of such Person and the appointment continues undischarged or unstayed
for 60 calendar days; or any proceeding under any Debtor Relief Law relating to any such
Person or to all or any material part of their respective property is instituted without the
consent of such Person and continues undismissed or unstayed for 60 calendar days, or an
order for relief is entered in any such proceeding; or

     (l) NRG Cross-Default. NRG Parent fails to observe or perform any other
agreement or condition relating to any Indebtedness (or Guarantee) or any Specified
Transaction (in each case, except with respect to payments described in paragraph (j) above)
having an aggregate principal amount (including amounts owing to all creditors under any
combined or syndicated credit arrangement) of more than $75,000,000 or contained in any
instrument or agreement evidencing, securing or relating thereto, or any other event occurs,
the effect of which default or other event is to permit such Indebtedness or amounts owing
under such Specified Transaction to be demanded as a result of such failure or to become due
or to be repurchased, prepaid, defeased or

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redeemed (automatically or otherwise), or an offer to repurchase, prepay, defease or
redeem such Indebtedness to be made, prior to its Stated Maturity, or such Guarantee to
become payable or cash collateral in respect thereof to be demanded as a result of such
failure, and NRG Parent shall not within two Business Days of such failure have made an
additional equity contribution in cash to RERH Holdings in an amount equal to the maximum
remaining equity contributions that NRG Parent may be required to make to RERH Holdings in
accordance with the Parent Contribution Agreement at any time from and after the date of
such failure (all of which shall have been posted to the Sleeve Provider); or

     (m) Excess Exposure. On any ESDS Calculation Date, the Exposure exceeds the
Maximum Permitted Exposure and is not cured within three Business Days after such ESDS
Calculation Date or, the Exposure exceeds the Target Exposure for any period of four
consecutive ESDS Calculation Dates; or

     (n) Data Failure Event of Default. A Data Failure Event of Default shall
occur; or

     (o) Risk Management Event of Default. A Risk Management Event of Default shall
occur; or

     (p) Posted Collateral Default. Any failure by the Reliant Retail Obligors to
perform or observe any covenant or agreement to post collateral contained in Section
6.18; or

     (q) Credit Sleeve Termination Date. The Credit Sleeve Termination Date shall
not have occurred at or prior to the time required by Section 6.19;

     (r) Purchase and Sale Agreement. NRG Retail fails to perform any term, covenant
or agreement contained in clause (iv) of Section 1 of the Retail Letter Agreement, and such
failure continues for 15 days after the earlier to occur of (i) notice thereof from Sleeve
Provider, or (ii) a Responsible Officer or other executive officer of such Reliant Retail
Obligor obtains knowledge of such occurrence.

     (s) Change of Control. The occurrence of any Change of Control.

          8.02. Sleeve Provider Events of Default. Any of the following shall constitute a
“Sleeve Provider Event of Default”:

     (a) Non-Payment. Any Merrill Party or the Working Capital Facility Provider
fails to pay within three Business Days after the same becomes due, any amount payable to a
Reliant Retail Obligor hereunder or under any other Transaction Document, including any
failure to fund when due under the Working Capital Facility; or

     (b) Willful Defaults. Any Merrill Party fails to perform or observe any
covenant or agreement set forth in Sections 2.01 through 2.05 and such
failure continues for ten Business Days after such Merrill Party receiving written notice
thereof from any Reliant Retail Obligor, which notice makes specific reference to this
Section 8.02(b) and

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provides reasonably detailed information regarding the facts constituting such failure;
provided that any such failure shall not fall within the provisions of this Section
8.02(b) in the event that both: (i) the covenant or agreement the Merrill Party failed
to perform or observe is a covenant or agreement that necessarily involves a consent,
determination or judgment required to be made by any Merrill Party or Reliant Retail Obligor
in a “reasonable” or “commercially reasonable” manner, or in “good faith” or with
“reasonable discretion” or without unreasonably withholding any such consent (each, a
“Decision”); and (ii) there is a good faith dispute among the parties as to such Decision;
provided further, however, that the foregoing proviso shall not apply at any time that (1)
any Merrill Party is in breach of its obligations to maintain ML Guarantees or Credit
Support Agreements with two or more Accepted Counterparties when required by this Agreement,
or (2) any Merrill Party is in breach of its obligations to post collateral to any two or
more Accepted Counterparties when required by the applicable Credit Support Agreement; or

     (c) Other Defaults. Any Merrill Party or the Working Capital Facility Provider
fails to perform or observe any other covenant or agreement (excluding those specified in
clause (a) above or addressed by clause (i) below, but including those specified under
clause (b) above) contained in any Transaction Document on its part to be performed or
observed and such failure continues for 30 days after the earlier to occur of (i) the Sleeve
Provider receiving notice thereof from any Reliant Retail Obligor or (ii) a Responsible
Officer or other executive officer of Sleeve Provider obtains knowledge of such occurrence;
or

     (d) Representations and Warranties. Any representation, warranty,
certification or statement of fact made or deemed made by or on behalf of any Merrill Party
or the Working Capital Facility Provider herein, in any other Transaction Document, or in
any document delivered in connection herewith or therewith shall be incorrect or misleading
in any material respect when made or deemed made; or

     (e) Cross-Default. ML&Co. (i) shall default (after giving effect to all
applicable grace periods) in the payment of any Indebtedness or Guarantee having an
aggregate principal amount (including amounts owing to all creditors under any combined or
syndicated credit arrangement) of more than $100,000,000 and (ii) either (A) at the time of
such default (after giving effect to all applicable grace periods), the final scheduled
maturity of such Indebtedness shall have occurred or (B) the final scheduled maturity of
such Indebtedness shall have been accelerated by the lenders thereunder or the holders
thereof; or

     (f) Credit Downgrade. Any senior unsecured, non-credit enhanced debt of the ML
Guarantee Provider shall fail to have an Investment Grade Rating; or

     (g) Insolvency Proceedings, Etc. Either Merrill Party or the Working Capital
Facility Provider institutes or consents to the institution of any proceeding under any
Debtor Relief Law, or makes an assignment for the benefit of creditors; or applies for or
consents to the appointment of any receiver, trustee, custodian, conservator, liquidator,
rehabilitator or similar officer for it or for all or any material part of their respective

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property; or any receiver, trustee, custodian, conservator, liquidator, rehabilitator
or similar officer is appointed without the application or consent of such Person and the
appointment continues undischarged or unstayed for 60 calendar days; or any proceeding under
any Debtor Relief Law relating to any such Person or to all or any material part of their
respective property is instituted without the consent of such Person and continues
undismissed or unstayed for 60 calendar days, or an order for relief is entered in any such
proceeding; or

     (h) Inability to Pay Debts; Attachment. Either Merrill Party or the Working
Capital Facility Provider becomes unable or admits in writing its inability or fails
generally to pay its debts as they become due.

          Section 9. Remedies and Termination.

          9.01. Remedies of Sleeve Provider. If any Reliant Event of Default shall have occurred and
be continuing, the Sleeve Provider shall have each of the following rights and remedies:

     (a) the right to declare an Unwind Start Date;

     (b) the right to deliver to each Accepted Counterparty notice that all future trades
under an existing Power and Hedging Contract shall not have the benefit of an ML Guarantee
or any Merrill Collateral under such Accepted Counterparty’s Power and Hedging Contract and
related Credit Support Agreement;

     (c) the right to cause REPS to enter into additional power purchase and hedging
activities to cure any violation of the Risk Limits (and REPS may not enter into any other
power purchase and hedging activities without the Sleeve Provider’s prior written consent);
provided that in exercising such right, Sleeve Provider will use the same standard of care
as Sleeve Provider uses in conducting transactions to correct risk policy violations under
Sleeve Provider’s risk policies;

     (d) (i) the right to declare, by written notice to the Reliant Retail Obligors, an
amount equal to 115% of the sum of all Exposure and all other liabilities and potential
liabilities of the Merrill Parties to any Counterparty or other beneficiary under this
Agreement, as reasonably determined by the Merrill Parties to a 99.0% (2.32-sigma)
confidence level (such amount, the “Required Collateralization Amount”), to be, and
the Required Collateralization Amount shall thereupon become, immediately due and payable
without presentment, demand, protest or other notice of any kind, all of which are hereby
waived by the Reliant Retail Obligors, which amount shall be posted to the Sleeve Provider,
and may be applied by the Sleeve Provider from time to time to satisfy any Draw
Reimbursement Obligation or any other Secured Obligation, or at the option of the Sleeve
Provider, posted from time to time to any Counterparty or other beneficiary in such amounts
as may be agreed between the Sleeve Provider and such Counterparty or other beneficiary in
exchange for a release or return of Merrill Collateral, following which the Merrill Parties
shall have no liability to the Reliant Retail Obligors with respect to such portion of the
Required Collateralization Amount so applied or posted to any

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Counterparty or other beneficiary and (ii) the right from time to time to require the
Reliant Retail Obligors to post such additional amounts to the extent that the Merrill
Parties determine that the amount of cash then posted is insufficient to exceed 115% of all
Exposure and other potential liabilities as of such time, all of which may be applied by the
Merrill Parties as provided in clause (i);

     (e) the right to setoff any amounts owed by any Merrill Party to any Reliant Retail
Obligor under the Transaction Documents, whether such amounts or obligations are direct or
indirect, absolute or contingent, or matured or unmatured, against any amounts owed by any
Reliant Retail Obligor, including Credit Sleeve Obligations, whether such obligations are
direct or indirect, absolute or contingent, or matured or unmatured;

     (f) the right of specific performance and injunctive relief to give effect to the terms
and conditions of the Transaction Documents, to the extent permitted by applicable law, and
in connection therewith the Parties acknowledge that the monetary remedies provided to the
Merrill Parties under the Transaction Documents are insufficient to cover all damages that
could be incurred by the Merrill Parties in connection with such a Reliant Event of Default;
and

     (g) any other rights and remedies available at law or in equity with respect to breach
of contract, subject to the provisions of Section 9.04.

          9.02. Remedies of REPS. 

          If any Sleeve Provider Event of Default shall have occurred and be continuing, REPS shall have
each of the following rights and remedies:

     (i) the right to declare an Unwind Start Date;

     (ii) the right, without declaring an Unwind Start Date or terminating any
commitments of the Merrill Parties under the Transaction Documents, to cure or cure
the effects of such Sleeve Provider Event of Default; and

     (iii) solely in the case of a Sleeve Provider Event of Default described in
Section 8.02 (b), (c), (d), (g) or (h) shall have occurred and be
continuing, any other rights and remedies available at law or in equity with respect
to breach of contract, subject to the provisions of Section 9.04.

          9.03. [Intentionally Deleted].

          9.04. Certain Limitations on Remedies. FOR BREACH OF ANY PROVISION OF THIS AGREEMENT FOR
WHICH AN EXPRESS REMEDY OR MEASURE OF DAMAGES IS PROVIDED, SUCH EXPRESS REMEDY OR MEASURE OF
DAMAGES SHALL BE THE SOLE AND EXCLUSIVE REMEDY, THE OBLIGOR’S LIABILITY SHALL BE LIMITED AS SET
FORTH IN SUCH PROVISION AND ALL OTHER REMEDIES OR DAMAGES AT LAW OR IN EQUITY ARE WAIVED. IF NO
REMEDY OR

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MEASURE OF DAMAGES IS EXPRESSLY PROVIDED HEREIN, THE OBLIGOR’S LIABILITY SHALL BE LIMITED TO DIRECT
ACTUAL DAMAGES ONLY, SUCH DIRECT ACTUAL DAMAGES SHALL BE THE SOLE AND EXCLUSIVE REMEDY, AND ALL
OTHER REMEDIES OR DAMAGES AT LAW OR IN EQUITY ARE WAIVED. UNLESS EXPRESSLY HEREIN PROVIDED, NO
PARTY SHALL BE LIABLE UNDER THIS AGREEMENT FOR CONSEQUENTIAL, INCIDENTAL, PUNITIVE, EXEMPLARY OR
INDIRECT DAMAGES, INCLUDING CONSEQUENTIAL LOST PROFITS OR OTHER CONSEQUENTIAL BUSINESS INTERRUPTION
DAMAGES, BY STATUTE, IN TORT OR CONTRACT OR OTHERWISE. IT IS THE INTENT OF THE PARTIES THAT THE
LIMITATIONS HEREIN IMPOSED ON REMEDIES AND THE MEASURE OF DAMAGES BE WITHOUT REGARD TO THE CAUSE OR
CAUSES RELATED THERETO, INCLUDING THE NEGLIGENCE OF ANY PARTY, WHETHER SUCH NEGLIGENCE BE SOLE,
JOINT OR CONCURRENT OR ACTIVE OR PASSIVE. TO THE EXTENT ANY DAMAGES REQUIRED TO BE PAID HEREUNDER
ARE LIQUIDATED, THE PARTIES ACKNOWLEDGE THAT THE DAMAGES ARE DIFFICULT OR IMPOSSIBLE TO DETERMINE,
OR OTHERWISE OBTAINING AN ADEQUATE REMEDY IS INCONVENIENT, AND THE DAMAGES CALCULATED HEREUNDER
CONSTITUTE A REASONABLE APPROXIMATION OF THE HARM OR LOSS.

          Section 10. Unwind

          10.01. Permitted Activities during Unwind Period.

          (a) During an Unwind Period, REPS may exercise one or more of the following rights with
respect to any Post-Unwind Start Date Transactions:

     (i) REPS may terminate Post-Unwind Start Date Transactions and pay, to the extent such
payments do not require application of funds in violation of this Agreement, applicable
settlement payments for the Post-Unwind Start Date Transactions (in which case, the Liens of
the Merrill Parties under the Collateral Trust Agreement securing the Credit Sleeve
Obligations shall be released on the Credit Sleeve Termination Date, and the Merrill Parties
shall take action under Section 12.04(c) in connection therewith);

     (ii) REPS may, to the extent such postings do not require application of funds in
violation of this Agreement, post collateral to cover credit risk for Post-Unwind Start Date
Transactions to the Sleeve Provider or Accepted Counterparties (in which case when such
postings have either replaced or covered all collateral postings by the Merrill Parties
under this Agreement and arrangements acceptable to the Sleeve Provider in its commercially
reasonably discretion for all potential future collateral postings have been made in respect
of such Post-Unwind Start Date Transactions, the liens of the Merrill Parties under the
Collateral Trust Agreement securing the Credit Sleeve Obligations shall be released, and the
Merrill Parties shall take action under Section 12.04(c) in connection therewith);
provided that for such purposes the Sleeve Provider will be deemed to be commercially
reasonable to the extent that it applies standards for collateral postings comparable to the
standards it applies generally in its business to counterparties with similar credit ratings
in comparable transactions;

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     (iii) the Reliant Retail Obligors may provide shared Liens on a pari passu basis to
any Replacement Sleeve Providers under the terms, including the sharing provisions, of the
Collateral Trust Agreement (in which case the Merrill Parties shall take action under
Section 12.04(b) (or (e), as applicable), in connection therewith) and the
Merrill Parties agree to negotiate in good faith at the request of REPS with any Replacement
Sleeve Providers to make reasonable adjustments to the terms of the Collateral Trust
Agreement or any requested intercreditor terms in connection therewith;

     (iv) REPS may provide the Sleeve Provider with a counterparty or counterparties with a
ML Equivalent Credit Rating, or if such counterparty or counterparties does not have at
least the ML Equivalent Credit Rating, it or they have provided cash collateral or made
other arrangements, in each case, satisfactory to the Sleeve Provider, who agree to take
assignment of and assume Reliant Retail’s positions under Post-Unwind Start Date
Transactions, and the Sleeve Provider agrees to negotiate in good faith with such
counterparty or counterparties to establish credit terms under which REPS positions can be
assumed by such counterparties under the standard credit policies of the Sleeve Provider (in
which case, the Liens of the Merrill Parties under the Collateral Trust Agreement securing
the Credit Sleeve Obligations shall be released following such assumption, and the Merrill
Parties shall take action under Section 12.04(c) in connection therewith); provided
that for such purposes the Sleeve Provider will be deemed to be acting in good faith to the
extent that it applies standards for credit terms comparable to the standards it applies
generally in its business to counterparties with similar credit ratings in comparable
transactions; and

     (v) REPS may provide the Sleeve Provider with a counterparty or counterparties with a
ML Equivalent Credit Rating, or if such counterparty or counterparties does not have at
least the ML Equivalent Credit Rating, it or they have provided cash collateral or made
other arrangements, in each case, satisfactory to the Sleeve Provider, who agree to take
assignment of and assume or replace the ML Guarantees and Credit Support Agreements with
respect to the Post-Unwind Start Date Transactions, and the Sleeve Provider agrees to
negotiate in good faith with such counterparty or counterparties to effect such an
assignment and assumption or replacement (in which case, the Liens of the Merrill Parties
under the Collateral Trust Agreement securing the Credit Sleeve Obligations shall be
released following such assignment and assumption or replacement, and the Merrill Parties
shall take action under Section 12.04(c) in connection therewith); provided that for
such purposes the Sleeve Provider will be deemed to be acting in good faith to the extent
that it applies standards for assignments and assumptions comparable to the standards it
applies generally in its business to counterparties with similar credit ratings in
comparable transactions.

          (b) At any time and from time to time in connection with such process, the Merrill Parties and
shall promptly execute and deliver any and all further agreements and documents and take such other
actions as REPS may reasonably request to fully implement the intent of the foregoing provisions in
this Section 10.01.

          Section 11. Reimbursement Guaranty by Other Reliant Retail Parties 

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          11.01. Reimbursement Guaranty of the Obligations. Subject to the provisions of
Section 11.02, the Reimbursement Guarantors jointly and severally hereby irrevocably and
unconditionally guaranty to the Merrill Parties (i) the due and punctual payment in full of all
Reimbursement Obligations and all other amounts payable by REPS to the Merrill Parties under the
Transaction Documents when the same shall become due, whether at stated maturity, by required
prepayment, declaration, acceleration, demand or otherwise (including amounts that would become due
but for the operation of the automatic stay under Section 362(a) of the Bankruptcy Code, 11 U.S.C.
Section 362(a)) and (ii) the performance of all other obligations of REPS hereunder (collectively,
the “Guaranteed Obligations”).

          11.02. Payment by Guarantors. The Reimbursement Guarantors hereby jointly and severally
agree, in furtherance of the foregoing and not in limitation of any other right which any Merrill
Party may have at law or in equity against any Reimbursement Guarantor by virtue hereof, that upon
the failure of REPS to pay any of the Guaranteed Obligations when and as the same shall become due,
whether at stated maturity, by required prepayment, declaration, acceleration, demand or otherwise
(including amounts that would become due but for the operation of the automatic stay under Section
362(a) of the Bankruptcy Code, 11 U.S.C. Section 362(a)), the Reimbursement Guarantors will upon
demand pay, or cause to be paid, in accordance with the terms of this Agreement, to the Merrill
Parties, an amount equal to the sum of the unpaid principal amount of all Guaranteed Obligations
then due as aforesaid, accrued and unpaid interest on such Guaranteed Obligations (including
interest which, but for REPS’s becoming the subject of a case under the Bankruptcy Code, would have
accrued on such Guaranteed Obligations, whether or not a claim is allowed against REPS for such
interest in the related bankruptcy case) and all other Guaranteed Obligations then owed to the
Merrill Parties as aforesaid.

          11.03. Liability of Reimbursement Guarantors Absolute. Each Reimbursement Guarantor agrees
that its obligations hereunder are irrevocable, absolute, independent and unconditional and shall
not be affected by any circumstance which constitutes a legal or equitable discharge of a guarantor
or surety other than payment in full of the Guaranteed Obligations. In furtherance of the
foregoing and without limiting the generality thereof, each Reimbursement Guarantor agrees as
follows:

     (a) this Reimbursement Guaranty is a guaranty of payment when due and not of
collectability. This Reimbursement Guaranty is a primary obligation of each Reimbursement
Guarantor and not merely a contract of surety;

     (b) the obligations of each Reimbursement Guarantor hereunder are independent of the
obligations of REPS and the obligations of any other guarantor (including any other
Reimbursement Guarantor) of the obligations of REPS, and a separate action or actions may be
brought and prosecuted against such Reimbursement Guarantor whether or not any action is
brought against REPS or any of such other guarantors and whether or not REPS is joined in
any such action or actions;

     (c) payment by any Reimbursement Guarantor of a portion, but not all, of the
Guaranteed Obligations shall in no way limit, affect, modify or abridge any Reimbursement
Guarantor’s liability for any portion of the Guaranteed Obligations which

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has not been paid; and without limiting the generality of the foregoing, if the Merrill
Parties is awarded a judgment in any suit brought to enforce any Reimbursement Guarantor’s
covenant to pay a portion of the Guaranteed Obligations, such judgment shall not be deemed
to release such Reimbursement Guarantor from its covenant to pay the portion of the
Guaranteed Obligations that is not the subject of such suit, and such judgment shall not,
except to the extent satisfied by such Reimbursement Guarantor, limit, affect, modify or
abridge any other Reimbursement Guarantor’s liability hereunder in respect of the Guaranteed
Obligations;

     (d) any Merrill Party, upon such terms as it deems appropriate, without notice or
demand and without affecting the validity or enforceability hereof or giving rise to any
reduction, limitation, impairment, discharge or termination of any Reimbursement Guarantor’s
liability hereunder, from time to time may (i) renew, extend, accelerate, increase the rate
of interest on, or otherwise change the time, place, manner or terms of payment of the
Guaranteed Obligations; (ii) settle, compromise, release or discharge, or accept or refuse
any offer of performance with respect to, or substitutions for, the Guaranteed Obligations
or any agreement relating thereto and/or subordinate the payment of the same to the payment
of any other obligations; (iii) request and accept other guaranties of the Guaranteed
Obligations and take and hold security for the payment hereof or the Guaranteed Obligations;
(iv) release, surrender, exchange, substitute, compromise, settle, rescind, waive, alter,
subordinate or modify, with or without consideration, any security for payment of the
Guaranteed Obligations, any other guaranties of the Guaranteed Obligations, or any other
obligation of any Person (including any other Reimbursement Guarantor) with respect to the
Guaranteed Obligations; (v) enforce and apply any security now or hereafter held by or for
the benefit of such Merrill Party in respect hereof or the Guaranteed Obligations and direct
the order or manner of sale thereof, or exercise any other right or remedy that such Merrill
Party may have against any such security, in each case as such Merrill Party in its
discretion may determine consistent herewith or any applicable security agreement, including
foreclosure on any such security pursuant to one or more judicial or nonjudicial sales,
whether or not every aspect of any such sale is commercially reasonable, and even though
such action operates to impair or extinguish any right of reimbursement or subrogation or
other right or remedy of any Reimbursement Guarantor against REPS or any security for the
Guaranteed Obligations; and (vi) exercise any other rights available to it under the
Transaction Documents; and

     (e) this Reimbursement Guaranty and the obligations of the Reimbursement Guarantors
hereunder shall be valid and enforceable and shall not be subject to any reduction,
limitation, impairment, discharge or termination for any reason (other than payment in full
of the Guaranteed Obligations), including the occurrence of any of the following, whether or
not any Reimbursement Guarantor shall have had notice or knowledge of any of them: (i) any
failure or omission to assert or enforce or agreement or election not to assert or enforce,
or the stay or enjoining, by order of court, by operation of law or otherwise, of the
exercise or enforcement of, any claim or demand or any right, power or remedy (whether
arising under the Transaction Documents, at law, in equity or otherwise) with respect to the
Guaranteed Obligations or any agreement relating thereto, or with respect to any other
guaranty of or security for the payment of the Guaranteed

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Obligations; (ii) any rescission, waiver, amendment or modification of, or any consent
to departure from, any of the terms or provisions (including provisions relating to events
of default) hereof, any of the other Transaction Documents or any agreement or instrument
executed pursuant thereto, or of any other guaranty or security for the Guaranteed
Obligations, in each case whether or not in accordance with the terms hereof or such
Transaction Document or any agreement relating to such other guaranty or security; (iii) the
Guaranteed Obligations, or any agreement relating thereto, at any time being found to be
illegal, invalid or unenforceable in any respect; (iv) any Merrill Party’s consent to the
change, reorganization or termination of the corporate structure or existence of REPS or any
of its Subsidiaries and to any corresponding restructuring of the Guaranteed Obligations;
(v) any failure to perfect or continue perfection of a security interest in any collateral
which secures any of the Guaranteed Obligations; and (vi) any other act or thing or
omission, or delay to do any other act or thing, which may or might in any manner or to any
extent vary the risk of any Reimbursement Guarantor as an obligor in respect of the
Guaranteed Obligations.

          11.04. Waivers by Reimbursement Guarantors. Each Reimbursement Guarantor hereby waives,
for the benefit of the Merrill Parties: (a) any right to require any Merrill Party, as a condition
of payment or performance by such Reimbursement Guarantor, to (i) proceed against REPS, any other
guarantor (including any other Reimbursement Guarantor) of the Guaranteed Obligations or any other
Person, (ii) proceed against or exhaust any security held from REPS, any such other guarantor or
any other Person, (iii) proceed against or have resort to any balance of any Collateral Account or
credit on the books of any Merrill Party in favor of REPS or any other Person, or (iv) pursue any
other remedy in the power of any Merrill Party whatsoever; (b) any defense arising by reason of the
incapacity, lack of authority or any disability of REPS or any other Reimbursement Guarantor
including any defense based on or arising out of the lack of validity or the unenforceability of
the Guaranteed Obligations or any agreement or instrument relating thereto; (c) any defense based
upon any statute or rule of law which provides that the obligation of a surety must be neither
larger in amount nor in other respects more burdensome than that of the principal; (d) (i) any
principles or provisions of law, statutory or otherwise, which are or might be in conflict with the
terms hereof, to the extent the same may be waived, (ii) the benefit of any statute of limitations
affecting such Reimbursement Guarantor’s liability hereunder or the enforcement hereof, and (iii)
promptness, diligence and any requirement that any Merrill Party protect, secure, perfect or insure
any security interest or lien or any property subject thereto; (e) notices, demands, presentments,
protests, notices of protest, notices of dishonor and notices of any action or inaction, including
acceptance hereof, notices of default hereunder or under any agreement or instrument related
thereto, notices of any renewal, extension or modification of the Guaranteed Obligations or any
agreement related thereto, notices of any extension of credit to REPS and notices of any of the
matters referred to in Section 11.04; and (f) any other defenses or benefits that may be
derived from or afforded by law which limit the liability of or exonerate guarantors or sureties,
or which may conflict with the terms hereof.

          11.05. Reimbursement Guarantors’ Rights of Subrogation, Contribution, etc. Until the
Guaranteed Obligations shall have been indefeasibly paid in full (other than indemnities and any
similar obligations of the Reliant Retail Obligors not then due and payable and that expressly
survive termination of this Agreement and the other Transaction Documents),

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each Reimbursement Guarantor hereby agrees not to exercise any claim, right or remedy, direct or
indirect, that such Reimbursement Guarantor now has or may hereafter have against REPS or any other
Reimbursement Guarantor or any of its assets in connection with this Reimbursement Guaranty or the
performance by such Reimbursement Guarantor of its obligations hereunder, in each case whether such
claim, right or remedy arises in equity, under contract, by statute, under common law or otherwise
and including (a) any right of subrogation, reimbursement or indemnification that such
Reimbursement Guarantor now has or may hereafter have against REPS with respect to the Guaranteed
Obligations, (b) any right to enforce, or to participate in, any claim, right or remedy that any
Merrill Party now has or may hereafter have against REPS, and (c) any benefit of, and any right to
participate in, any collateral or security now or hereafter held by any Merrill Party. In
addition, until the Guaranteed Obligations shall have been indefeasibly paid in full (other than
indemnities and any similar obligations of the Reliant Retail Obligors not then due and payable and
that expressly survive termination of this Agreement and the other Transaction Documents), each
Reimbursement Guarantor shall withhold exercise of any right of contribution such Reimbursement
Guarantor may have against any other guarantor (including any other Reimbursement Guarantor) of the
Guaranteed Obligations, including any such right of contribution as contemplated by Section
11.02. Each Reimbursement Guarantor further agrees that, to the extent the agreement to
withhold the exercise of its rights of subrogation, reimbursement, indemnification and contribution
as set forth herein is found by a court of competent jurisdiction to be void or voidable for any
reason, any rights of subrogation, reimbursement or indemnification such Reimbursement Guarantor
may have against REPS or against any collateral or security, and any rights of contribution such
Reimbursement Guarantor may have against any such other guarantor, shall be junior and subordinate
to any rights any Merrill Party may have against REPS, to all right, title and interest any Merrill
Party may have in any such collateral or security, and to any right any Merrill Party may have
against such other guarantor. If any amount shall be paid to any Reimbursement Guarantor on
account of any such subrogation, reimbursement, indemnification or contribution rights at any time
when all Guaranteed Obligations shall not have been finally and indefeasibly paid in full (other
than indemnities and any similar obligations of the Reliant Retail Obligors not then due and
payable and that expressly survive termination of this Agreement and the other Transaction
Documents), such amount shall be held in trust for the Merrill Parties and shall forthwith be paid
over to the Merrill Parties to be credited and applied against the Guaranteed Obligations, whether
matured or unmatured, in accordance with the terms hereof.

          11.06. Subordination of Other Obligations. Any Indebtedness of REPS or any Reimbursement
Guarantor now or hereafter held by any Reimbursement Guarantor (the “Obligee Guarantor”) is
hereby subordinated in right of payment to the Guaranteed Obligations during the existence of a
Reliant Event of Default, and any such indebtedness collected or received by the Obligee Guarantor
during the existence of a Reliant Event of Default shall be held in trust for the Merrill Parties
and shall forthwith be paid over to the Merrill Parties to be credited and applied against the
Guaranteed Obligations but without affecting, impairing or limiting in any manner the liability of
the Obligee Guarantor under any other provision hereof.

          11.07. Continuing Reimbursement Guaranty. This Reimbursement Guaranty is a continuing
guaranty and shall remain in effect until all of the Guaranteed Obligations shall have been
indefeasibly paid in full. Each Reimbursement Guarantor hereby

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irrevocably waives any right to revoke this Reimbursement Guaranty as to future transactions giving
rise to any Guaranteed Obligations.

          11.08. Authority of Reimbursement Guarantors or REPS. It is not necessary for any Merrill
Party to inquire into the capacity or powers of any Reimbursement Guarantor or REPS or the
officers, directors or any agents acting or purporting to act on behalf of any of them.

          11.09. Financial Condition of REPS. Any Reimbursement Guarantee may be made to REPS or
continued from time to time, without notice to or authorization from any Reimbursement Guarantor
regardless of the financial or other condition of REPS at the time of any such grant or
continuation. No Merrill Party shall have any obligation to disclose or discuss with any
Reimbursement Guarantor its assessment, or any Reimbursement Guarantor’s assessment, of the
financial condition of REPS. Each Reimbursement Guarantor has adequate means to obtain information
from REPS on a continuing basis concerning the financial condition of REPS and its ability to
perform its obligations under the Transaction Documents, and each Reimbursement Guarantor assumes
the responsibility for being and keeping informed of the financial condition of REPS and of all
circumstances bearing upon the risk of nonpayment of the Guaranteed Obligations. Each
Reimbursement Guarantor hereby waives and relinquishes any duty on the part of any Merrill Party to
disclose any matter, fact or thing relating to the business, operations or conditions of REPS now
known or hereafter known by any Merrill Party.

          11.10. Bankruptcy, etc.

          (a) So long as any Guaranteed Obligations remain outstanding, no Reimbursement Guarantor
shall, without the prior written consent of Merrill Parties acting pursuant to the instructions of
Requisite Lenders, commence or join with any other Person in commencing any bankruptcy,
reorganization or insolvency case or proceeding of or against REPS or any other Reimbursement
Guarantor or admit in writing or in any legal proceeding that it is unable to pay its debts as they
become due. The obligations of Reimbursement Guarantors hereunder shall not be reduced, limited,
impaired, discharged, deferred, suspended or terminated by any case or proceeding, voluntary or
involuntary, involving the bankruptcy, insolvency, receivership, reorganization, liquidation or
arrangement of REPS or any other Reimbursement Guarantor or by any defense which REPS or any other
Reimbursement Guarantor may have by reason of the order, decree or decision of any court or
administrative body resulting from any such proceeding.

          (b) Each Reimbursement Guarantor acknowledges and agrees that any interest on any portion of
the Guaranteed Obligations which accrues after the commencement of any case or proceeding referred
to in clause (a) above (or, if interest on any portion of the Guaranteed Obligations ceases to
accrue by operation of law by reason of the commencement of such case or proceeding, such interest
as would have accrued on such portion of the Guaranteed Obligations if such case or proceeding had
not been commenced) shall be included in the Guaranteed Obligations because it is the intention of
Reimbursement Guarantors and Merrill Parties that the Guaranteed Obligations which are guaranteed
by Reimbursement Guarantors pursuant hereto should be determined without regard to any rule of law
or order which may relieve REPS of any portion of such Guaranteed Obligations. Reimbursement
Guarantors will permit any trustee in

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bankruptcy, receiver, debtor in possession, assignee for the benefit of creditors or similar
person to pay the Merrill Parties, or allow the claim of the Merrill Parties in respect of, any
such interest accruing after the date on which such case or proceeding is commenced.

          (c) In the event that all or any portion of the Guaranteed Obligations are paid by REPS, the
obligations of Reimbursement Guarantors hereunder shall continue and remain full force and effect
or be reinstated, as the case may be, in the event that all or any part of such payment(s) are
rescinded or recovered directly or indirectly from any Merrill Party as a preference, fraudulent
transfer or otherwise, and any such payments which are so rescinded or recovered shall constitute
Guaranteed Obligations for all purposes hereunder.

          Section 12. Miscellaneous.

          12.01. Notices. All notices and other communications provided for herein shall be in
writing, including telecopy and electronic mail, and shall be delivered by hand or overnight
courier service, mailed by certified or registered mail or sent by telecopy or other means of
electronic transmission approved in advance by the recipient party, as follows:

(a) if to the REPS:

RELIANT ENERGY POWER SUPPLY, LLC

100 Main St.

Houston, Texas 77002

Attention: Kevin T. Howell, President

Telephone No.: 713-795-6124

Telecopy No.: 713-795-7444

E-Mail: Kevin.howell@nrgenergy.com

              Joy.thakur@nrgenergy.com

with a copy to:

RELIANT ENERGY POWER SUPPLY, LLC

c/o NRG Energy, Inc.

211 Carnegie Center

Princeton, New Jersey 08540

Attention: Treasurer, Chief Financial Officer and General Counsel

Telecopy No.: (609) 524-4501

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(b) if to the Sleeve Provider:

MERRILL LYNCH COMMODITIES, INC.

20 East Greenway Plaza

Suite 700

Houston, Texas 77046

Attention: Legal Department

Telephone No.: (713) 544-5263

Telecopy No.: (713) 544-5551

E-Mail: reliantsleeve_notices@ml.com

(c) if to the ML Guarantee Provider:

MERRILL LYNCH & CO., INC.

Merrill Lynch & Co., Inc.

4 World Financial Center, 22nd Floor

New York, NY 10281

Attention: Treasurer

Fax: (212) 449-2766

E-Mail: reliantsleeve_notices@ml.com

With a copy (which shall not constitute notice) to:

Merrill Lynch & Co., Inc.

222 Broadway, 17th Floor

New York, NY 10038

Attention: Corporate Secretary

Any Party hereto may change its address, telecopy number or e-mail address for notices and other
communications hereunder by notice to the other Party hereto. All notices and other communications
given to any Party hereto in accordance with the provisions of this Agreement shall be deemed to
have been given on the date of receipt.

          12.02. Confidentiality; Limitation on Use of Information. (a) Any information made
available by the Reliant Retail Obligors, any Subsidiary of any of the foregoing, any Merrill Party
or any Affiliate thereof with respect to this Agreement is confidential and shall not be discussed
with or disclosed to any third party, except for such information (i) as may become generally
available to the public other than as a result of a violation of this Agreement, (ii) as may be
required or appropriate in response to any summons, subpoena, or otherwise in connection with any
litigation or to comply with any applicable law, order, regulation, or ruling or to the extent
requested by any regulatory authority, (iii) which becomes available to the Reliant Retail
Obligors, any Subsidiary of any of the foregoing, any Merrill Party or any Affiliate thereof on a
non-confidential basis from a source other than the other Party, (iv) as may be furnished to any
person or entity (including that Person’s auditors, attorneys, advisors, Information Technology
Personnel, or financial institutions) with which such Person has a written agreement or which are
otherwise required to keep the information that is

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disclosed in confidence, (v) relating to the U.S. Federal income tax treatment and tax structure of
the transactions contemplated by this Agreement, including all relevant materials relating to such
tax treatment and tax structure (except where confidentiality is reasonably necessary to comply
with the securities laws) or (vi) to the extent required by Section 7.01 of the Collateral Trust
Agreement; provided that Proprietary Information of the Reliant Retail Obligors, any Subsidiary of
any of the foregoing, any Merrill Party and any Affiliate thereof shall be shared by the other
Person in accordance with clauses (iv) or (vi) only on a “need to know” or “need to have access”
basis). Notwithstanding the foregoing, the existence and terms of the ML Guarantees shall not be
considered confidential information.

     (b) In addition to the confidentiality restrictions with respect to third parties in
paragraph (a) above, the Merrill Parties agree that:

     (i) the confidential information of the Reliant Retail Obligors will not be used by the
Merrill Parties except for determining compliance with, and performance under, the
Transaction Documents; and

     (ii) With respect to the information provided to the Merrill Parties pursuant to
Schedule 1.01(c) or otherwise relating to the transactions or market positions of
the Reliant Retail Obligors (“Retail Proprietary Information”), access to such
information will be limited to (A) the personnel listed on Exhibit I1 and their
successors in function with respect to this Agreement and the personnel of the Merrill
Parties that are described in any updates to such Exhibit provided by the Sleeve Provider
from time to time for such purposes (“Merrill Updates”), subject to the approval of
REPS, which shall not be unreasonably withheld or delayed and (B) information technology
personnel engaged in the operation or maintenance of the information technology systems used
by the Merrill Parties operating within the scope of their duties (including third-party
service providers subject to Section 12.02(a)) (“ML Information Technology
Personnel”); provided that no such personnel shall be engaged in placing trades in the
wholesale electricity or natural gas markets except under the Transaction Documents. For
the avoidance of doubt, Merrill Updates and the related REPS approval may be provided via
“e-mail” transmission pursuant to Section 12.01.

     (c) In addition to the confidentiality restrictions with respect to third parties in
paragraph (a) above, the Reliant Retail Obligors agree that:

     (i) the confidential information of the Merrill Parties will not be used by the Reliant
Retail Obligors except for determining compliance with, and performance under, the
Transaction Documents; and

     (ii) With respect to the information provided to the Reliant Retail Obligors pursuant
to Schedule 1.01(c) or otherwise relating to transactions, market positions, cost of
funds or other market information of the Merrill Parties (including the information set
forth in the proviso below, “Merrill Proprietary Information” and, together with
Retail Proprietary Information, “Proprietary Information”), access to such
information will be limited to (A) the personnel listed on Part A of Exhibit I2 and
their successors in function

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with respect to this Agreement and the personnel that are described in any updates to Part A
of such Exhibit provided by the Reliant Retail Obligors from time to time for such purposes
(“Reliant Updates”), subject to the approval of the Sleeve Provider, which shall not
be unreasonably withheld or delayed and (B) information technology personnel engaged in the
operation or maintenance of the information technology systems used by the Reliant Retail
Obligors operating within the scope of their duties (including third-party service providers
subject to Section 12.02(a))(“Retail Information Technology Personnel, and together
with ML Information Technology Personnel, “Information Technology Personnel”);
provided that proprietary commodity and pricing curves (including curves relating to power,
gas, basis, volatilities and skews), the CD ROM referred to in Schedule 1.01(c) to
the Existing CSRA and the General Principles referred to in Schedule 1.01(c) to the
Existing CSRA will be limited to (A) the personnel listed on Part B of Exhibit I2
and their successors in function with respect to this Agreement and the personnel that are
described in any updates to Part B of such Exhibit provided by the Reliant Retail Obligors
from time to time for such purposes, subject to the approval of the Sleeve Provider, which
shall not be unreasonably withheld or delayed and (B) Retail Information Technology
Personnel. For the avoidance of doubt, Reliant Updates and the related Sleeve Provider
approval may be provided via “e-mail” transmission pursuant to Section 12.01.

     (d) In connection with the foregoing provisions of this Section 12.02, (A) the
Parties recognize that the Parties are both engaged in wholesale trading activities in the
gas and electricity markets that may from time to time be adverse, (B) the possession by the
Merrill Parties of the confidential information of the Reliant Retail Obligors, or the
possession by the Reliant Retail Obligors of the confidential information of the Merrill
Parties, in compliance with the foregoing does not constitute a reason for one Party to
limit the ability of the other Party to engage in such adverse trading activities, and (C)
the Parties may in compliance with the foregoing and for the purposes of the Transaction
Documents discuss the confidential information of the other Parties (other than the
Proprietary Information of the other Parties) internally.

          12.03. Reliant Employees. During the Scheduled Term, the Merrill Parties shall not solicit
or otherwise induce any director, officer or key employee of the Reliant Retail Obligors, or any
officer or key employee of NRG Parent or its Subsidiaries that is actively involved in the
negotiation or administration of this Agreement to leave the employ of the Reliant Retail Obligors,
NRG Parent or its Subsidiaries; provided that (a) this prohibition shall not apply to (i)
directors, officers or key employees of the Reliant Retail Obligors or officers or key employees of
NRG Parent or its Subsidiaries who are not full time employees or who are not actively involved
with the Merrill Parties in negotiating on or administering this Agreement or (ii) officers,
directors or key employees of the Reliant Retail Obligors, NRG Parent or its Subsidiaries who
respond to general solicitations or who otherwise independently seek employment without inducement
by any Merrill Party and (b) in the event that (i) NRG Parent or any Subsidiary of NRG Parent that
provides services to the Reliant Retail Obligors under the NRG Parent Services Agreement becomes
subject of a bankruptcy, insolvency or similar proceeding or (ii) the NRG Parent Services Agreement
is terminated, this prohibition shall not

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apply with respect to any such officer or employee of NRG Parent or any of its Subsidiaries who
provided services to the Reliant Retail Obligors under the NRG Parent Services Agreement.

          12.04. Provisions relating to Collateral Trust Agreement and Reimbursement Guarantee. (1)
The Merrill Parties hereby agree in favor of the Collateral Trustee, the Secured Counterparties,
and the Reliant Retail Obligors to perform, comply with, and be bound by each of the covenants,
agreements, and obligations contained in the Collateral Trust Agreement to the extent applicable to
the Merrill Parties as Secured Counterparties under the Collateral Trust Agreement.

(2) The Merrill Parties hereby agree that at the direction of REPS from time to time and to the
extent no Default with respect to a Reliant Event of Default or Reliant Event of Default exists and
no such Default or Reliant Event of Default would be caused thereby, the Merrill Parties shall or
shall direct the Collateral Trustee, as applicable, to:

     (a) accept additional Collateral in accordance with Section 2.03 of the Collateral Trust
Agreement;

     (b) accept Replacement Sleeve Providers and Replacement Working Capital Providers and their
respective agreements as additional secured counterparties and secured agreements in accordance
with Section 3.01 and 3.03 of the Collateral Trust Agreement;

     (c) remove the Merrill Parties as secured counterparties with respect to the Credit Sleeve
Obligations in accordance with Section 3.02 and 3.03 of the Collateral Trust Agreement (A) upon the
occurrence of the Credit Sleeve Termination Date (or, if any Merrill Party is the sole secured
counterparty under the Collateral Trust Agreement upon the occurrence of the Credit Sleeve
Termination Date, at the direction of REPS release all of the Collateral in accordance with Section
2.07 of the Collateral Trust Agreement); (B) under the circumstances expressly contemplated by
Section 10.01(a)(i), 10.01(a)(ii), 10.01(a)(iv) and 10.01(a)(v) (or, if any Merrill Party
is the sole secured counterparty under the Collateral Trust Agreement at the time of the occurrence
of the events and circumstances set forth in such Sections, at the direction of REPS release all of
the Collateral in accordance with Section 2.07 of the Collateral Trust Agreement);

     (d) with respect to, and to the extent of, property constituting Collateral that is, or will
be, sold or otherwise transferred or disposed of in connection with any transaction permitted under
this Agreement, release or confirm the release of such Collateral under Sections 2.04, 2.05 or
2.06 of the Collateral Trust Agreement, as applicable; provided that (i) to the extent that such
sale, transfer or other disposition is of all of the Equity Interests in a Subsidiary, the Merrill
Parties shall also instruct the Collateral Trustee to release all of the assets of such Subsidiary
that constitute Collateral, (ii) to the extent that such sale, transfer or other disposition is of
all or substantially all of the assets of a Subsidiary, the Merrill Parties shall also instruct the
Collateral Trustee to release all of the Equity Interests in such Subsidiary that constitute
Collateral and (iii) make or approve any conforming changes reasonably requested by REPS in the
Security Documents necessary to implement such release in the reasonable discretion of the Merrill
Parties;

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     (e) [Intentionally Deleted];

     (f) enter into intercreditor agreements with respect to the Credit Sleeve Obligations in
accordance with, and to the extent, expressly contemplated by Section 10.01(a)(iii) and
Article IX of the Collateral Trust Agreement; and

     (g) amend, restate, supplement, modify, renew or replace, or forbear from exercising any
rights with respect to the terms or provisions contained in, or cancel, terminate or suspend
performance under, any Security Document, or consent to the taking of any of the foregoing actions
with respect to any other Transaction Document, in each case to the extent such foregoing action is
approved by the Sleeve Provider in accordance with Section 7.11 hereof.

The Merrill Parties shall timely execute and deliver, provide, return or otherwise make available
or direct the execution and delivery, provision, return or otherwise making available of all
filings, recordings, notices, and other related documents and agreements, including releases and
notices, directions and other communications to the Collateral Trustee, reasonably required to
implement the foregoing in accordance with the terms of the foregoing.

          12.05. Waiver. No failure on the part of any Party to exercise and no delay in exercising,
and no course of dealing with respect to, any right, power or privilege under this Agreement shall
operate as a waiver thereof, nor shall any single or partial exercise of any right, power or
privilege under this Agreement preclude any other or further exercise thereof or the exercise of
any other right, power or privilege. The remedies provided herein are cumulative and not exclusive
of any remedies provided by law.

          12.06. Amendments, Etc.. Except as otherwise expressly provided in this Agreement, any
provision of this Agreement or in any other Transaction Document between or among any of the
Merrill Parties, on one hand, and any of the Reliant Retail Obligors, on the other hand, may be
modified or supplemented only by an instrument in writing signed by the applicable Parties thereto.

          12.07. Expenses, Etc.

     (a) REPS agrees to pay or reimburse the Sleeve Provider for:  (A) all reasonable and
documented out-of-pocket costs and expenses of the Sleeve Provider (including the reasonable fees
and expenses of legal counsel and of any other third-party advisors or consultants) in connection
with the execution or delivery of this Agreement or any other Transaction Document or any agreement
or instrument contemplated hereby or thereby, the performance by the Parties hereto and thereto of
their respective obligations hereunder or thereunder or the consummation of the transactions
contemplated hereby, including, any such costs and expenses incurred in connection with (1) any
waiver, modification or amendment of this Agreement or any other Transaction Document, whether or
not consummated, (2) any Default by the Reliant Retail Obligors and any enforcement or collection
proceedings resulting therefrom, including all manner of participation in or other involvement with
(i) bankruptcy, insolvency, receivership, foreclosure, winding up or liquidation proceedings,
(ii) judicial or regulatory proceedings and (iii) workout, restructuring or other negotiations or
proceedings (whether or not the workout,

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restructuring or transaction contemplated thereby is consummated) and (3) the enforcement of
this Section 12.07; and (B) all transfer, stamp, documentary or other similar taxes,
assessments or charges levied by any governmental or revenue authority in respect of this Agreement
or any of the other Transaction Documents or any other document referred to herein or therein and
all costs, expenses, taxes, assessments and other charges incurred in connection with any filing,
registration, recording or perfection of any security interest contemplated by any Security
Document or any other document referred to therein.

          (b) REPS agrees to reimburse the Merrill Parties for any amounts paid by the Merrill Parties
(i) to cure defaults by REPS or any Other Reliant Retail Obligor under any Transaction Document or
any other document, contract or agreement to which REPS or such Other Reliant Retail Obligor is a
party or (ii) to any software vendor relating to the use or maintenance of software (A) used by the
Reliant Retail Obligors or the IT Trust in the Retail Energy Business or (B) to be used by the
Reliant Retail Obligors or the IT Trust in maintaining the Information Technology Systems or
related services needed to operate the Retail Energy Business at the best general efficiency level
of Information Technology Systems and related services used by the Reliant Retail Obligors or the
IT Trust before the time in question (the amounts referred to in clauses (i) and (ii) being herein
collectively referred to as the “Deferred Cure Reimbursement Obligations”). Deferred Cure
Reimbursement Obligations may be prepaid but shall mature and be payable on the date that the
Working Capital Facility matures (whether on the Maturity Date under, and as defined in, the
Working Capital Facility, by acceleration or otherwise).

          (c) REPS shall indemnify each Merrill Party and each Related Party of the Merrill Parties
(each such Person being called an “Indemnitee”) against, and hold each Indemnitee harmless
from, any and all actual losses, claims, damages, liabilities and related expenses, including the
fees, charges and disbursements of any counsel for any Indemnitee, incurred by or asserted against
any Indemnitee arising out of, in connection with, or as a result of (i) the execution or delivery
of this Agreement or any agreement or instrument contemplated hereby, the performance by the
parties hereto of their respective obligations hereunder or the consummation of any of the
transactions contemplated hereby, (ii) the provision of any ML Guarantee or other Merrill
Collateral or use thereof, (iii) any actual or alleged presence or release of Hazardous Materials
on or from any property owned or operated by RERH Holdings or any of its Subsidiaries, or any
liability under any Environmental Law related in any way to RERH Holdings or any of its
Subsidiaries, or (iv) any actual or prospective claim, litigation, investigation or proceeding
relating to any of the foregoing, whether based on contract, tort or any other theory and
regardless of whether any Indemnitee is a party thereto; provided that such indemnity shall not, as
to any Indemnitee, be available to the extent that such losses, claims, damages, liabilities or
related expenses are determined by a court of competent jurisdiction by final and nonappealable
judgment to have resulted from (A) the gross negligence or willful misconduct of such Indemnitee,
(B) any breach by such Indemnitee of its obligations hereunder, or (C) claims by one Indemnitee
against another Indemnitee not relating to a breach of this Agreement by any Reliant Retail
Obligor.

          12.08. Successors and Assigns. This Agreement shall be binding upon and inure to the
benefit of the Parties hereto and their respective successors and permitted

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assigns. Except as expressly set forth in Section 12.04(1), there shall be no third party
beneficiaries of this Agreement

          12.09. Assignments. Neither the Reliant Retail Obligors nor the Merrill Parties may assign
any of their rights or obligations hereunder without the prior written consent of the other Parties
hereto.

          12.10. Survival. The obligations of REPS under Section 12.07, Section
6.19(d) and any other provision that expressly provides for survival after termination shall
survive the Credit Sleeve Termination Date.

          12.11. Counterparts. This Agreement may be executed in any number of counterparts, all of
which taken together shall constitute one and the same instrument and any of the Parties hereto may
execute this Agreement by signing any such counterpart.

          12.12. Governing Law; Jurisdiction; Etc.

          (a) Governing Law. This Agreement shall be governed by, and construed in accordance
with, the law of the State of New York.

          (b) Submission to Jurisdiction. The Parties hereby submit to the nonexclusive
jurisdiction of the United States District Court for the Southern District of New York and of the
Supreme Court of the State of New York sitting in New York County (including its Appellate
Division), and of any other appellate court in the State of New York (the “New York Courts”), for
the purposes of all legal proceedings arising out of or relating to this Agreement or the
transactions contemplated hereby. Notwithstanding the nonexclusive submission above:

          (A) With respect to any proceeding initiated by or on behalf of any Reliant Retail
Obligor arising out of or relating to this Agreement or the transactions contemplated
hereby, the Reliant Retail Obligors agree to bring such proceeding exclusively in the United
States District Court for the Southern District of New York or if such court does not have
subject matter jurisdiction in any of the other New York Courts located in New York, New
York, and in such case EACH PARTY HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED
BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY SUCH LEGAL PROCEEDING;

          (B) With respect to any proceeding initiated by or on behalf of any Merrill Party
arising out of or relating to this Agreement or the transactions contemplated hereby, which
the Merrill Parties elect to bring in the United States District Court for the Southern
District of New York or if such court does not have subject matter jurisdiction in any of
the other New York Courts located in New York, New York, EACH PARTY HEREBY IRREVOCABLY
WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY
JURY IN ANY SUCH LEGAL PROCEEDING; and

-102-

 

          (C) With respect to any proceeding initiated by or on behalf of any Merrill Party
arising out of or relating to this Agreement or the transactions contemplated hereby, which
the Merrill Parties elect to bring in the United States District Court for the Southern
District of Texas (Houston Division) or if such court does not have subject matter
jurisdiction in any of the other Texas Courts located in Houston, Texas, the Reliant Retail
Obligors expressly reserve their rights to trial by jury.

          (c) Waiver of Venue. Each Party hereby irrevocably waives, to the fullest extent
permitted by applicable law, any objection that it may now or hereafter have to the laying of the
venue of any such proceeding brought in such a court and any claim that any such proceeding brought
in such a court has been brought in an inconvenient forum.

          (d) Service of Process. Each Party to this Agreement irrevocably consents to service
of process in the manner provided for notices in Section 12.01. Nothing in this Agreement
will affect the right of any Party to this Agreement to serve process in any other manner permitted
by law.

          12.13. Certain Dispute Resolution Procedures. If a Party (a “Disputing Party”)
disputes any Market Information forming a component used in a calculation under Sections
2.02(a)(v)(2), (3), and (4), then (i) the Disputing Party will notify the other Party not later
than the close of business on the Business Day following the date that Disputing Party received the
other Party’s calculation and such Disputing Party will also provide its calculation of such amount
and the applicable Market Information used to make such calculation, (ii) the Parties will in good
faith consult with each other in an attempt to resolve the dispute and (iii) if the Parties fail to
resolve the dispute by the third (3rd) Business Day following the date the notice of
dispute was delivered, then the Calculation Agent will recalculate the applicable calculation by:
(A) utilizing any Market Information that the Parties have agreed are not in dispute; and (B)
calculating the component that is in dispute by seeking four actual quotations at mid market from
reference market makers, and taking the arithmetic average of those obtained; provided that if such
number of quotations are not available for a particular component, then fewer than such number of
quotations may be used for such component; and if no quotations are available for a particular
component, then the Calculation Agent shall use its own calculations for that component. Following
a recalculation pursuant to this Section, the Calculation Agent will notify the Parties of the
recalculation of such amount not later than 12:00 noon CPT on the fifth Business Day following the
date of the notice of dispute was delivered, and the same shall be binding for the purposes of this
Agreement. The “Calculation Agent” shall be a third party agreed to by both REPS and the
Sleeve Provider from the list of third parties in Schedule 12.13; provided that if the
Parties are unable to promptly agree on such third party, then the next third party listed on such
Schedule who has not yet served as Calculation Agent shall be the Calculation Agent for such
dispute.

          12.14. Captions. The table of contents and captions and section headings appearing herein
are included solely for convenience of reference and are not intended to affect the interpretation
of any provision of this Agreement.

          12.15. Limitation on Interest. Notwithstanding anything herein to the contrary, if at
any time the interest rate applicable to any Reimbursement Obligation, together

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with all fees, charges and other amounts which are treated as interest on such Reimbursement
Obligation under applicable law (collectively the “Charges”), shall exceed the maximum
lawful rate (the “Maximum Rate”) which may be contracted for, charged, taken, received or
reserved by the Sleeve Provider in accordance with applicable law, the rate of interest payable in
respect of such Reimbursement Obligations hereunder, together with all Charges payable in respect
thereof, shall be limited to the Maximum Rate and, to the extent lawful, the interest and Charges
that would have been payable in respect of such Reimbursement Obligation but were not payable as a
result of the operation of this Section shall be cumulated and the interest and Charges payable to
the Sleeve Provider in respect of other Reimbursement Obligations or periods shall be increased
(but not above the Maximum Rate therefor) until such cumulated amount, together with interest
thereon at the Federal Funds Rate to the date of repayment, shall have been received by the Sleeve
Provider.

          12.16. Integration. This Agreement and the other Transaction Documents constitute the
entire contract among the Parties relating to the subject matter hereof and supersede any and all
previous agreements and understandings, oral or written, relating to the subject matter hereof.

          12.17. Conditions to Amendment and Restatement. The Existing CSRA shall be amended
and restated hereby as of the Third A&R Date; provided that:

     (a) each of the following conditions has been satisfied or waived by the Merrill Parties on or
prior to June 1, 2009 (which may occur concurrently with the effectiveness of such amendment and
restatement):

     (i) The Purchase and Sale Agreement shall be in form and substance satisfactory to the
Merrill Parties in all respects (provided that the Merrill Parties acknowledge and agree
that the terms and conditions of the Purchase and Sale Agreement in the form originally
executed on the Signing Date are satisfactory).

     (ii) The Retail Acquisition shall have been (or shall be simultaneously) consummated in
all respects in accordance with applicable Laws and the terms of (and upon the satisfaction
of the conditions precedent set forth in) the Purchase and Sale Agreement in the form
originally executed by the parties thereto (provided that any modifications, supplements or
waivers thereof, or written consents or determinations thereunder, shall be reasonably
satisfactory to the Merrill Parties), and the Sleeve Provider shall have received a
certificate of a Responsible Officer of NRG Parent to such effect.

     (iii) Each agreement, opinion, certificate, instrument and other document required
pursuant to the Purchase and Sale Agreement to be delivered by the parties thereto in
connection with the closing of the Retail Acquisition shall have been duly executed and
delivered and in full force and effect, and the Sleeve Provider shall have received a
certificate of a Responsible Officer of NRG Parent to such effect and to the effect that
attached thereto are true and complete copies of each such agreement, opinion, certificate,
instrument and other document, each of which shall be in form and substance

-104-

 

reasonably satisfactory to the Merrill Parties.

     (iv) The Merrill Parties shall have received evidence that NRG Parent has initiated the
wire transfer in the Federal Wire System of the Initial Contribution for receipt by the
Reliant Retail Obligors upon the open of business on May 1, 2009.

     (v) The Merrill Parties shall be satisfied as to the absence of any liabilities of the
Reliant Retail Obligors or any Merrill Party to REI, any Affiliate of REI or any other
Person arising as a result of the Retail Acquisition, including under any tax sharing or
similar agreements (but excluding liabilities arising under the Purchase and Sale Agreement
or the ML/REI Letter Agreement).

     (vi) The Offsetting Trades shall have been novated in accordance with Section
2.04. The PMI/REPS EEI shall have been terminated, all transactions thereunder novated
to the PMI/REPS STANDARD ISDA and arrangements satisfactory to the Merrill Parties made for
return of the original ML Guarantee in respect thereof.

     (vii) Since the date of the Audited Financial Statements, there shall have not have
occurred any event or circumstance, either individually or in the aggregate that has had or
could reasonably be expected to have a Retail Material Adverse Effect (as defined in the
Purchase and Sale Agreement).

     (viii) Since December 31, 2008, there shall have not have occurred any event or
circumstance, either individually or in the aggregate that has had or could reasonably be
expected to have a material adverse effect on the business, operations, property or
financial condition of NRG Parent and its Subsidiaries (other than the Reliant Retail
Obligors) taken as a whole.

     (ix) The Merrill Parties shall have received a favorable written opinion of Kirkland &
Ellis LLP, counsel for NRG Parent and the Reliant Retail Obligors (or from such other
counsel, which may be in-house counsel, as is reasonably acceptable to the Merrill Parties),
as to the enforceability of this Agreement and each other Transaction Document effective as
of the Third A&R Date, the validity and perfection of the liens created by the Security
Documents, the absence of any violation of law and absence of conflict with the Organization
Documents and any material Contractual Obligations of the Reliant Retail Obligors and NRG
Parent (provided that, other than with respect to the NRG Parent Credit Agreement, the
Senior Note Documents and the Preferred Equity, or any refinancing in effect at the relevant
time, such opinion as to absence of conflicts with other Contractual Obligations may be from
in-house counsel to NRG Parent), as to the absence of a substantive consolidation between
any of RERH Holdings or the IT Trust, on the one hand, with NRG Parent, on the other hand,
and covering such other matters relating to the Reliant Retail Obligors, NRG Parent, this
Agreement or the transactions contemplated hereby as the Merrill Parties or their counsel
shall reasonably request. In addition, the Reliant Retail Obligors shall have made
available to the Merrill Parties and their counsel such documents as any of them may request
in order to enable counsel to the Merrill Parties to render to the Merrill Parties such
legal opinions, if any, as the

-105-

 

Merrill Parties may request.

     (x) The Risk Management Policy shall be in form and substance reasonably satisfactory
to the Merrill Parties. The Merrill Parties acknowledge and agree that Section VII of the
Risk Management Policy in the form delivered by the Merrill Parties to NRG Parent on
February 26, 2009 is satisfactory; provided any supplements, amendments or modifications
thereto shall be satisfactory to the Merrill Parties in all respects.

     (xi) The members of senior management, including the board of managers (or similar
governing body), of the Reliant Retail Obligors shall be reasonably satisfactory to the
Merrill Parties.

     (xii) The Working Capital Facility and each other Transaction Document shall be in full
force and effect, and in the case of each other Transaction Document, together with all
amendments and modifications thereto as may be necessary or reasonably requested by the
Merrill Parties in connection with the consummation of the Retail Acquisition. Without
limiting the generality of the foregoing, each of the Tax Subordination Agreement, the
Sublease, the Parent Consent and Agreement, the Transition Services Agreement and Parent
Services Agreement shall be in form and substance satisfactory the Merrill Parties (provided
that the Merrill Parties acknowledge and agree that the terms and conditions of the
Sublease, the Parent Consent and Agreement, the Transition Services Agreement and the Parent
Services Agreement, in the original forms attached to the Purchase and Sale Agreement are
satisfactory).

     (xiii) The Merrill Parties shall have received the IT Trust Transfer and Allocation
Plan and the IP Trust shall have been dissolved in a manner reasonably satisfactory to the
Merrill Parties.

     (xiv) The NRG IT Trust shall have been duly formed in accordance with the law of the
State of Delaware, the NRG IT Trust Agreement shall be in full force and effect, and the
Merrill Parties shall have received a favorable written opinion of special Delaware counsel
to the NRG IT Trust covering the formation of the NRG IT Trust, the enforceability of the
NRG IT Trust Agreement and such other matters relating to the NRG IT Trust as the Merrill
Parties or their counsel shall reasonably request.

     (xv) The partial assignment of the GLO Contract shall have been consummated in
accordance with the terms of the GLO Assignment Agreement and the Merrill Parties shall have
received a copy of the consent and release from GLO in respect thereof.

     (xvi) The Reliant Retail Obligors shall have received all necessary third-party
consents and approvals to the transactions contemplated by this Agreement.

     (xvii) REI shall not be in breach of any of its obligations under the ML/REI Letter
Agreement.

     (xviii) The Merrill Parties shall have received all fees and expenses that are due

-106-

 

under any Transaction Document (or shall have received evidence that payment of all
such fees and expenses has been initiated in the Federal Wire System for payment upon the
open of business on May 1, 2009), including under the Exclusivity and Fee Letter, the NRG/ML
Letter Agreement and the ML/REI Letter Agreement, including payment of the following: (i)
the invoice of the Merrill Parties, (ii) the invoice of Milbank, Tweed, Hadley & McCloy LLP
and (iii) the invoice of Alvarez & Marsal.

     (xix) Each action contemplated to occur on or prior to the Third A&R Date pursuant to
the Upton Wind Side Letter shall have been consummated in accordance with the terms thereof.

     (xx) The Merrill Parties shall have received a certificate, dated the Third A&R Date,
of a Responsible Officer of REPS, to the effect that:

     (1) the representations and warranties of the Reliant Retail Obligors made in
Section 5 and in the other Transaction Documents are true and correct in all
material respects on and as of the Third A&R Date, and

     (2) no Reliant Default or Reliant Event of Default has occurred and is continuing as of
the Third A&R Date.

     (xviii) The Security Documents shall create in favor of the Collateral Trustee a valid,
perfected first-priority lien (subject only to Permitted Liens) in all assets transferred to
the Reliant Retail Obligors, and the Merrill Parties shall have received all additional
security documents as may be necessary in connection therewith, including, with respect to
the Marks acquired by NRG Retail on the Third A&R Date, a supplemental trademark security
agreement and, with respect to the Sublease, a valid leasehold mortgage; and

     (b) REPS shall have received a certificate, dated the Third A&R Date, of a Responsible Officer
of the Sleeve Provider, to the effect that no Sleeve Provider Default or Sleeve Provider Event of
Default described in Section 8.02(f), (g) or (h) has occurred and is continuing as
of the Third A&R Date.

          12.18. Public Disclosures. REPS agrees that neither it nor its Affiliates will at any
time issue any press release or other public disclosure, including any prospectus, proxy statement
or other materials filed with any Governmental Authority using the name of the Sleeve Provider, the
ML Guarantee Provider or any of their Affiliates or referring to this Agreement, the transactions
or any of the agreements contained herein or contemplated hereby or any discussions relating to any
of the foregoing, without at least one full Business Day (or such shorter period as may be
practicable in the circumstances) prior notice to the Merrill Parties and the prior written consent
of the Sleeve Provider (such consent not to be unreasonably withheld, delayed or conditioned).

          12.19. Non-Recourse. The recourse of the Merrill Parties under or in connection with this
Agreement and the other Transaction Documents shall be solely against

-107-

 

RERH Holdings and its Subsidiaries and the Collateral (and, solely with respect to the obligations
of NRG Parent under the Parent Contribution Agreement and the Exclusivity and Fee Letter, against
NRG Parent). Each Merrill Party hereby waives any claim against any other Affiliate of RERH
Holdings other than its Subsidiaries and, to the extent expressly provided by the Parent
Contribution Agreement or the Exclusivity and Fee Letter, as the case may be, NRG Parent) (each a
“Non-Recourse Party”) for any liability under or in connection with this Agreement or any
other Transaction Document, or any of the transactions contemplated hereby or thereby, or by
operation of law or otherwise, to the extent arising in connection with any breach or Reliant
Default, or alleged breach or Reliant Default under the Transaction Documents or any instrument or
document provided thereunder, except to the extent the same is enforced against any Non-Recourse
Party only with respect to its obligations under any Transaction Document to which it is a party.
The foregoing acknowledgement, waiver and agreement shall be enforceable by RERH Holdings and its
Affiliates, including NRG Parent.

[signatures follow]

-108-

 

          IN WITNESS WHEREOF, the Parties hereto have caused this Agreement to be duly executed and
delivered as of the day and year first above written.

	 	 	 	 	 
	 	RELIANT ENERGY POWER SUPPLY, LLC

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

Signature Page to Credit Sleeve and Reimbursement Agreement

 

	 	 	 	 	 
	 	MERRILL PARTIES

MERRILL LYNCH COMMODITIES, INC.,

        as Sleeve Provider

 	 
	 	By:  	/s/ Dennis Albrecht
 	 
	 	 	Name:  	Dennis Albrecht 	 
	 	 	Title:  	Managing Director and COO 	 
	 
	 	MERRILL LYNCH & CO., INC.,

        as ML Guarantee Provider

 	 
	 	By:  	/s/ Marlene Debel
 	 
	 	 	Name:  	Marlene Debel 	 
	 	 	Title:  	Assistant Treasurer 	 
	 
	 	Accepted and agreed, for the purposes of Section
12.18.

MERRILL LYNCH CAPITAL CORPORATION,

        as Working Capital Facility Provider

 	 
	 	By:  	/s/ Barry S. Price
 	 
	 	 	Name:  	Barry S. Price 	 
	 	 	Title:  	Vice President 	 

Signature Page to Credit Sleeve and Reimbursement Agreement

 

	 	 	 	 	 
	 	OTHER RELIANT RETAIL OBLIGORS

RERH HOLDINGS, LLC

 	 
	 	By:  	/s/ Christopher S. Sotos
 	 
	 	 	Name:  	Christopher S. Sotos 	 
	 	 	Title:  	Vice President 	 
	 
	 	RELIANT ENERGY RETAIL HOLDINGS, LLC

 	 
	 	By:  	/s/ Christopher S. Sotos
 	 
	 	 	Name:  	Christopher S. Sotos 	 
	 	 	Title:  	Vice President 	 
	 
	 	RELIANT ENERGY RETAIL SERVICES, LLC

 	 
	 	By:  	/s/ Christopher S. Sotos
 	 
	 	 	Name:  	Christopher S. Sotos 	 
	 	 	Title:  	Vice President 	 
	 
	 	RE RETAIL RECEIVABLES, LLC

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

Signature Page to Credit Sleeve and Reimbursement AgreementEX-10.1.B

Exhibit 10.1(B)

Schedules and Exhibits to the

Amended and Restated Credit Sleeve and Reimbursement Agreement

dated as of May 1, 2009

(Portions of this Exhibit marked “[***]” have been omitted

pursuant to a request for confidential treatment)

	 	 	 	 	 
	SCHEDULE 1.01 (a)

	 	-
	 	Risk Management Policy Violations
	SCHEDULE 1.01(b)

	 	-
	 	Calculations Relating to Exchange Traded
Contracts
	SCHEDULE 1.01(c)

	 	-
	 	Data and Reporting Requirements
	SCHEDULE 1.01(d)

	 	-
	 	ESDS and Fee Schedules
	SCHEDULE 1.01(e)

	 	-
	 	Trademarks
	SCHEDULE 1.01(f)

	 	-
	 	[Intentionally Deleted]
	SCHEDULE 1.01(g)

	 	-
	 	Investments
	SCHEDULE 1.01(h)

	 	-
	 	Liens
	SCHEDULE 1.01(i)

	 	-
	 	C&I Contract Exceptions
	SCHEDULE 2.02(a)

	 	-
	 	Counterparty Document Modification Provisions
	SCHEDULE 2.04

	 	 	 	C&I Contracts and Governmental Contracts receiving
ML Guarantee
	SCHEDULE 3.06(a)

	 	-
	 	Merrill Account
	SCHEDULE 5.06

	 	-
	 	Litigation
	SCHEDULE 5.13

	 	-
	 	List of Subsidiaries
	SCHEDULE 5.16

	 	-
	 	Compliance With Laws
	SCHEDULE 7.14

	 	-
	 	List of Retail Services
	SCHEDULE 12.13

	 	-
	 	List of Calculation Agents
	SCHEDULE 12.17

	 	-
	 	List of Offsetting Trades
	 
	 	 	 	 
	EXHIBIT Al

	 	-
	 	Form of ML Guarantee for Accepted Counterparties
	EXHIBIT A2

	 	-
	 	Form of ML Guarantee for C&I Customers
	EXHIBIT B

	 	-
	 	List of Accepted Counterparties
	EXHIBIT C1

	 	-
	 	[Intentionally Deleted]
	EXHIBIT C2

	 	-
	 	[Intentionally Deleted]
	EXHIBIT C3

	 	-
	 	[Intentionally Deleted]
	EXHIBIT C4

	 	-
	 	[Intentionally Deleted]
	EXHIBIT Dl

	 	-
	 	[Intentionally Deleted]
	EXHIBIT D2

	 	-
	 	[Intentionally Deleted]
	EXHIBIT E1

	 	-
	 	Reliant Energy – Retail Risk Policy
	EXHIBIT E2

	 	-
	 	[Intentionally Deleted]
	EXHIBIT F

	 	-
	 	[Intentionally Deleted]
	EXHIBIT G

	 	-
	 	Form of Joinder Agreement
	EXHIBIT H

	 	-
	 	Form of Compliance Certificate
	EXHIBIT I1

	 	-
	 	Sleeve Provider’s Employees with Access to Certain

Reliant Retail Obligor Information
	 
	 	 	 	 
	EXHIBIT I2

	 	-
	 	Reliant Retail Obligors’ Employees with Access to

Certain Merrill Party Information

 

 

Schedule 1.01 (a)

To Amended and Restated Credit Sleeve and Reimbursement Agreement

Risk Management Policy Violations

DETERMINATION OF LEVEL I, II, AND III VIOLATIONS

CSRA Violations

Level I Violations

1) Inaccurate input or failure to enter on a timely basis transactions with a
notional amount of greater than $250,000 into a transaction capture system.

Level II Violations

1) Level I violations equal to 2 percent of total transactions during the preceding calendar
quarter;

2) Transactions resulting in a Loss Exposure of less than $15,000,000 due to a) Failure to
report an executed transaction; b) Execution of a commercial transaction with an
unauthorized counterparty; c) Executing a transaction with unapproved terms, notional
limits or tenor; and / or d) Other unauthorized transactions (involving, for example,
commodity, product, market).

Level III Violations

1) 5 Level II violations during the preceding calendar quarter;

2) Any amount or quantity that exceeds a Risk Limit and not Cured within 3 Business
Days;

3) Any amount or quantity that exceeds a Risk Limit and that amount or quantity exceeds
a mark-to market loss of $25,000,000 not Cured within 1 business day.

4) Creating a Loss Exposure of greater than $15,000,000 due to a) Execution of a
commercial transaction with an unauthorized counter party; b) Executing a transaction
with unapproved terms, notional limits or tenor; and / or c) Other unauthorized
transactions (involving, for example, commodity, product, market). And such violation
is not Cured within 1 Business Day after the earlier to occur of (i) notice thereof from
Sleeve Provider, or (ii) a Responsible Officer or other executive officer of any Reliant
Retail Obligor obtaining knowledge of such occurrence;

5) 3 violations of the types described in item 4 above shall occur, which have been Cured
such that they do not constitute a Level III Violation on their own, during any 60
consecutive month period; provided that if such a Level III Violation under this item 5
occurs, another such Level III Violation under this item 5 shall not occur unless an
additional 3 violations of such types have occurred

 

			
	*	 	Loss Exposure: The mark-to-market value of an underlying amount or quantity exceeding a Risk
Limit assuming a two standard deviation move in the underlying variables multiplied
by the square root of 10.
	 
	*	 	Cured: As used in Retail Risk Management Policy the term “cured” means the loss exposure
for the amount or quantity exceeding the Risk Limit constituting the applicable violation has
been reduced to less than $5,000,000.

Schedule 1.01(a) to CSRA

 

 

Schedule 1.01 (b)

To Amended and Restated Credit Sleeve and Reimbursement Agreement

Calculations Relating to Exchange Traded Contracts

Adjusted Volume:

For Exchange Traded Contracts with the following delivery periods and volume quantities,

	 	 	 
	 	 	ETC Commodity
	Period (Month)	 	Quantities
	0

	 	Qo
	1

	 	Q1
	2

	 	Q2
	3

	 	Q3
	. . .	 	. . .
	. . .	 	. . .
	N

	 	QN

the “Adjusted Volume” of the Mirror OTC Contracts to be entered into between REPS and the
Sleeve Provider as part of the (EFS Transaction or ICE Block Transaction) under the Credit Sleeve
and Reimbursement Agreement will be computed as follow:

	 	 	 
	Period (Month)	 	Adjusted Volume
	0

	 	Qo / AZPo
	1

	 	Q1 / AZP1
	2

	 	Q2  / AZP2
	3

	 	Q3  / AZP3
	. . .	 	. . .
	. . .	 	. . .
	N

	 	QN / AZPn

“AZP” shall be the Adjusted Zero Prices that corresponds to the date on the
Adjusted Zero Curve which is defined below.
The Adjusted Volume will be rounded off to the nearest full unit (mmbtu or
mwh).

Calculation of Adjusted Zero Curve:

The Credit Sleeve Provider will calculate an adjusted LIBOR forward curve (the “Adjusted LIBOR
Forward Curve”) each day by adding the marginal cost of capital adder (the “MCC Adder”) to the
inputs used to calculate the Merrill Lynch & Co. standard LIBOR curve (the “Merrill LIBOR Curve”).

Schedule 1.01(b) to CSRA

 

 

“MCC Adder” shall be:

(a) 0.0028; for purposes of calculating the Adjusted Volume of Mirror
OTC Contracts executed in connection with (EFS Transactions or ICE
Block Transactions) that are Effective Date Transactions described in
Section 2.03(a) of the Credit Sleeve Reimbursement Agreement; and

(b) the marginal cost of capital relative to LIBOR that all Merrill Lynch &
Co.’s trading desks are charged for the use of funds by Merrill Lynch &
Co. (as of the date of such EFS Transaction or ICE Block Transaction),
which amount is relative to LIBOR that is the average cost of capital for
Merrill Lynch & Co. across all maturities (such MCC Adder can be
positive or negative); for purposes of calculating the Adjusted Volume of
Mirror OTC Contracts executed in connection with EFS Transactions or
ICE Block Transactions that are Ongoing Transactions described in
Section 2.03(b) of the Credit Sleeve Reimbursement Agreement

As of the Effective Date, the MCC Adder described in subsection (b) above is 0.0028;
however, such amount may change in accordance with changes to Merrill Lynch & Co.’s
marginal cost of capital as described above.

“Merrill LIBOR Curve” shall be the LIBOR curve used by Merrill Lynch & Co. and its
subsidiaries in their U.S. and world wide swap and futures operations and business and used
to mark its interest rate position to market. It is understood that Merrill Lynch & Co.
may modify the inputs for how it determines this curve; however, it will continue to use
the same curve for the Merrill LIBOR Curve as used in this Schedule and for its other
operations as described in the foregoing sentence.

Using the Adjusted LIBOR Forward Curve the Sleeve Provider will calculate a corresponding zero
curve (the “Adjusted Zero Curve”), and provide such Adjusted Zero Curve to REPS on each Business
Day, no later than 10:00 a.m. CST, and such curve shall be applicable to the (EFS Transactions and
ICE Block Transactions) that are executed on that day. The Adjusted Zero Curve will be a strip of
monthly Adjusted Zero Prices, which represent the present value of $1.00 dollar received on a
specific date in the future, assuming the Adjusted LIBOR Forward Curve for discounting purposes
with discounting being computed utilizing the continuously compounding methodology. The Adjusted
Zero Curve provided will have 5 places after the decimal point.

The term of the Adjusted LIBOR Forward Curve and the corresponding Adjusted Zero Curve will be 72
months, including the then current month; provided, however, that to the extent REPS currently has
or in the future obtains an Exchange Traded Contract for a longer period, then the Sleeve Provider
will extend the Adjusted LIBOR Forward Curve and the Adjusted Zero Curve to match such longer
period. Adjusted Zero Prices that correspond to dates that are between the Monthly Dates in the
table below will be

 

 

calculated using linear interpolation. The format utilized by the Sleeve Provider in
providing this information will include at a minimum the following attributes:

	 	 	 	 	 	 	 
	 	 	 	 	Adjusted LIBOR	 	Adjusted Zero
	Period (Month)	 	Monthly Date	 	Forward Curve	 	Curve
	0

	 	 	 	AL0 = 0
	 	AZPo = 1
	1

	 	 	 	AL1
	 	AZP1
	2

	 	 	 	AL2
	 	AZP2
	3

	 	 	 	AL3
	 	AZP3
	. . .	 	 	 	. . .	 	. . .
	. . .	 	 	 	. . .	 	. . .
	. . .	 	 	 	. . .	 	. . .
	N

	 	 	 	ALN
	 	AZPN

Treatment for Options:

For purposes of clarification the Parties agree that no adjustment will be made to the volumes of
options transactions which are transferred pursuant to EOO Transactions under the Credit Sleeve
Reimbursement Agreement, or in other words the Adjusted Volume of any Mirror OTC Contract that is
an option will be the exact same volume as the volume of the corresponding Exchange Traded
Contract.

Physical Exposure Management Fee:

For Exchange Traded Contracts that provide for physical delivery, (both futures contracts and
options that provide for physical delivery futures contracts) and are transferred to the Sleeve
Provider pursuant to an EFS or EOO Transaction, the following will apply: The Mirror OTC
Transaction’s confirm will specify that REPS agrees to pay to Sleeve Provider (or Sleeve Provider
agrees to pay to REPS) a fee (the “Physical Exposure Management Fee” or “PhEM”)
equal to: either (i) the actual EFS or EOO Transaction premium paid or received by Sleeve Provider
to liquidate the physical exposure or (ii) if Sleeve Provider takes the position in its own book,
the average of two broker quotes on the day Sleeve Provider takes the position (which quotes shall
be of the applicable buy or sell side from the Sleeve Provider’s perspective of the premium for the
EFS or EOO of the same product and delivery month), multiplied by the volume in the EFS or EOO
Transaction. Sleeve Provider will provide REPS notice of the PhEM amount within 2 Business Days of
either liquidating the physical exposure with a third party or taking the position on the Sleeve
Provider’s own book. REPS may request that the Sleeve Provider provide deal tickets as evidence of
the actual premium paid or received by Sleeve Provider or instant messaging prints of broker
quotes. PhEM shall be due and payable by the applicable Party at the time of settlement of the
Mirror OTC Transaction associated with such EOO or EFS Transaction.

Schedule 1.01(b) to CSRA

 

 

[SUBJECT TO EXISTING

CONFIDENTIALITY

AGREEMENT BETWEEN

NRG AND MERRILL]

Schedule 1.01
(c) 

To Amended and Restated Credit Sleeve and Reimbursement Agreement

Data and Reporting Requirements

I. General Provisions — Certain Defined Terms

This Schedule 1.01(c) shall constitute a part of the Credit Sleeve Reimbursement Agreement
(“CSRA”). Capitalized Terms used herein shall either (a) have the meaning specified in the CSRA or
(b) the meaning defined in this Schedule 1.01(c). All terms defined herein shall be listed
in the Index of Defined Terms for this Schedule 1.01(c). References to Schedule
1.01(c) shall be to the entirety of this Schedule 1.01(c) and all sub-parts unless an
individual sub-part is specified.

All Current Mark-to-Market and Risk Limits computations shall be done on the basis of data REPS
provides to the Sleeve Provider by loading such data to a designated web site on or before 9:00
p.m. Central time on the preceding Business Day. The data provided pursuant to this Schedule
1.01(c) shall reflect transactions closed by the time frames set forth in Schedule
1.01(c).28 (except for the data specified in Schedule 1.01(c).24, which shall reflect
transactions as of the close of business on the Business Day next preceding the day REPS provides
such data). Such data shall be in a format designed to facilitate the Sleeve Provider’s computation
of Risk Limits and Current Mark-to-Market and shall consist of the data required by this
Schedule 1.01(c). The Sleeve Provider’s computation shall be performed consistent with the
methodology that the Sleeve Provider uses to mark its own positions to market on a daily basis.

“Delivery Month” or “delivery month” means a calendar month in which physical
delivery or financial settlement under a transaction occurs.

“(t)” means, as the context requires, any Business Day as of which an amount or value contemplated
in this Schedule 1.01(c) is calculated or an identified event occurs.

“(T)” means each applicable Delivery Month for the contract (or forecast to purchase and sell
electricity in respect of month-to-month Customers) in respect of which this term is used.

“Current Mark-to-Market” for any day, shall be expressed in Dollars and shall be
equal to the Mark-to-Market value of all Forward Hedge Positions (as defined in Schedule
1.01(c).1) determined by the Sleeve Provider, as of such day.

The “Mark-to-Market” value of a transaction, which may be a positive or a negative number,
shall be determined by valuing each transaction (volumes, contract prices, and delivery dates)
using the Merrill Market Forward Pricing Curve, Merrill Volatility Curve and Correlation Curve
that corresponds to the pricing terms of such transaction, or in the case of a dispute as to the

Schedule 1.01(c) to CSRA

 

 

Curve Inputs (as defined below), such new Curve Inputs resulting from the process for resolving
disputes as to the Curve Inputs outlined below. The “Merrill Market Forward Pricing Curves”
and “Merrill Volatility Curves” are defined as the curves used by the Sleeve Provider in its
U.S. energy and related forwards, futures and options trading operations to mark its positions to
market; and in those situations where discounting is applicable it will perform such discounting
using the Merrill LIBOR Curve (as such term is defined in Schedule 1.01(b), the
“Merrill LIBOR Curve”). The “Correlation Curves” will be the curves used by REPS
as of December 31, 2008 in its U.S. energy and related forwards, futures and options trading
operations to mark its positions to market (with such changes thereto as may be reasonably agreed
by the Sleeve Provider and REPS from time to time at the request of either REPS or the Sleeve
Provider). It is understood that the Merrill Parties may modify inputs for how they determine
these curves so long as they continue to use the same curves for the calculations referred to
herein as the curves they use for their other operations referred to in this paragraph.

REPS may challenge the Merrill LIBOR Curve, Merrill Market Forward Pricing Curves, Merrill
Volatility Curves and any other Sleeve Provider curves or inputs or modifications (herein
collectively, referred to as the “Curve Inputs”), used by the Sleeve Provider in calculating the
Risk Limits and Current Mark-to-Market. If the parties cannot reach agreement on the Curve Inputs
within two days after such challenge, then REPS may require that a third party expert be used to
choose between the Sleeve Provider’s methodology for determining the Curve Inputs and a specific
alternative methodology proposed by REPS for use in determining the Curve Inputs for a specified
product, location or time period. The third party expert will be designated by REPS from a list of
at least three qualified and impartial experts which list shall promptly (and in no event more
than two Business Days following request therefor), be provided by the Sleeve Provider to REPS.
Such expert shall be required to choose between the Curve Inputs used by the Sleeve Provider and
those inputs proposed by REPS and to identify which it determines is more accurate, and the inputs
used as Curve Inputs thereafter shall be formulated by the Sleeve Provider in a manner consistent
with the inputs so selected and thereafter such Curve Inputs as so formulated will be the Curve
Inputs for all purposes hereunder. The expenses of the expert will be paid by the Party whose
inputs are not selected by the expert.

Prior to the agreement on any change in the Curve Inputs, the provisions of the CSRA with respect
to Risk Limits and Current Mark-to-Market will continue to be applicable on the basis of the
calculation of Risk Limits and Current Mark-to-Market by the Sleeve Provider immediately prior to,
and during, any challenge by REPS.

Schedule 1.01(c) to CSRA

2

 

II. Overview of Customer Types, Customer Sub-Types and Risk Legs for Forward Retail Positions. The following overview is provided as background for the specification of data to
be provided by REPS and to provide definitions for “Customer Types”, “Customer Sub-Types” and the
respective “Risk Legs”, including the pricing structures associated therewith.

	 	a.	 	Customer Types.

The Retail Energy Business of the Reliant Retail Obligors has three main customer types (each, a
“Customer Type”):

	 	(i)	 	Commercial & Industrial (“C&I”);
	 
	 	(ii)	 	Residential Mass; and
	 
	 	(iii)	 	Small Business Mass.

Residential Mass and Small Business Mass are together referred to as “Mass”.

	 	b.	 	Customer Sub-Types.

Each Customer Type can be further subdivided by the type of product primarily provided to such
Customer Type (each, a “Customer Sub-Type”).

The Customer Sub-Types are as follows for ERCOT business:

	 	(1)	 	“FIXED”: Fixed Price Power;
	 
	 	(2)	 	“MGI”: Monthly Gas Index;
	 
	 	(3)	 	“MCPE”: Market Clearing Price of Energy;
	 
	 	(4)	 	“CAPE”: Capacity Energy;

	 	c.	 	Risk Legs.

Each Customer in a Customer Sub-Type may contract for one pricing and/or risk structure or a
combination of pricing and/or risk structures (defined as “Risk Legs”), the volumes from which must
be quantified for purposes of determining compliance with the Risk Limits.

The Risk Legs for ERCOT business are as follows:

	 	(1)	 	“FP”: Fixed Price Power;
	 
	 	(2)	 	“MGI”: Monthly Gas Index;
	 
	 	(3)	 	“MCPE”: Market Clearing Price of Energy;
	 
	 	(4)	 	“CAPEHR”: Capacity Energy Heat Rate;
	 
	 	(5)	 	“CAPACITY”: Capacity Payments;
	 
	 	(6)	 	“MTMH”: Month-To-Month Hedged with Fixed Price Instruments;
	 
	 	(7)	 	“MTMHO”: Month-To-Month Hedged with Option Instruments;

Schedule 1.01(c) to CSRA

3

 

	 	d.	 	Options.

“Options” refer to customized derivative solutions embedded in contracts for physical delivery of
Energy by a Reliant Retail Obligor to a C&I Customer.

Details of the different pricing structures corresponding to the Risk Legs are provided
below:

C&I Customers:

C&I Customers for ERCOT business are comprised of five Customer Sub-Types. Each of these
Customer Sub-Types may have contracted for component Risk Legs and corresponding pricing
structures as follows:

	 	 	 	 	 	 	 	 	 
	Customer	 	 	 	 	 	 	 	 
	Sub-Type	 	Risk Leg	 	Aggregated	 	Pricing Structure	 	Example
	Fixed

	 	FP
	 	Yes
	 	P=Fixed
	 	P=$75.00/MWh
	 
	 	 	 	 	 	 	 	 
	MGI

	 	MGI

FP
	 	No

No
	 	P=Heat Rate*Monthly Gas Index + Fixed Adder

P=Fixed
	 	P=8.000*NYMEX HH LD + $7.00/MWh

P=$75.00/MWh
	 
	 	 	 	 	 	 	 	 
	CAPE

	 	CAPEHR

MCPE

CAPACITY

FP

MGI
	 	No

No

No

No
	 	P=Heat Rate*Monthly or Daily Gas Index +
Fixed Adder

P=Factor MCPE*Average Monthly MCPE + Fixed Adder

P=Total Dollars

P=Fixed
	 	P=9.000*GD HSC + $10.00/MWh

P=105%*MCPE + $5.50/MWh

P=$45,000

P=$75.00/MWh
	 
	 	 	 	 	 	 	 	 
	MCPE

	 	MCPE

FP

MGI
	 	No

No

No
	 	P=Factor MCPE* Average Monthly MCPE + Fixed Adder

P=Fixed

P=Heat Rate*Monthly Gas Index + Fixed Adder
	 	P=105%*MCPE + $5.50/MWh

P=$75.00/MWh

P=8.000*NYMEX HH LD – $7.00/MWh

Residential Mass:

Residential Mass Customers are comprised of three Customer Sub-Types. Each of these Customer
Sub-Types may have contracted for Risk Legs and corresponding pricing structures as follows:

	 	 	 	 	 	 	 	 	 
	Customer	 	 	 	 	 	 	 	 
	Sub-Type	 	Risk Leg	 	Aggregated	 	Pricing Structure	 	Example
	Fixed

	 	FP
	 	Yes
	 	P=Fixed
	 	P=$75.00/MWh
	 
	 	 	 	 	 	 	 	 
	Fixed

	 	MTMH
	 	Yes
	 	P=Fixed
	 	P=$75.00/MWh
	 
	 	 	 	 	 	 	 	 
	MCPE

	 	MTMHO
	 	Yes
	 	P=Average Monthly MCPE + Gross Margin Projection
	 	P=MCPE + $15.18/MWh
	 
	 	 	 	 	 	 	 	 

Small Business Mass :

Small Business Mass Customers are comprised of three Customer Sub-Types. Each of these Customer
Sub-Types may have contracted for Risk Legs and corresponding pricing structures as follows:

	 	 	 	 	 	 	 	 	 
	Customer	 	 	 	 	 	 	 	 
	Sub-Type	 	Risk Leg	 	Aggregated	 	Pricing Structure	 	Example
	Fixed

	 	FP
	 	Yes
	 	P=Fixed
	 	P=$75.00/MWh
	 
	 	 	 	 	 	 	 	 
	Fixed

	 	MTMH
	 	Yes
	 	P=Fixed
	 	P=$75.00/MWh
	 
	 	 	 	 	 	 	 	 
	MCPE

	 	MTMHO
	 	Yes
	 	P=Average Monthly MCPE + Gross Margin Projection
	 	P=MCPE + $I8.35/MWh

Schedule 1.01(c) to CSRA

4

 

Risk Legs that indicate that they are “Aggregated” in the above tables shall be aggregated by REPS
in accordance with Aggregation Attributes (e.g. Load Zone, etc.) as more specifically set forth in
the descriptions of Forward C&I Positions and Forward Mass Positions one

 Schedule 1.01 (c).

A reference to “load” or “Load” (or their plural equivalents) in this Schedule 1.01(c)
shall have the same meaning as “volume” or “Volume” (or their plural equivalents).

Schedule 1.01(c) to CSRA

5

 

Schedule 1.01(c).1

Data for Risk Limits and Current Mark-to-Market Calculations

On each Business Day REPS will provide the data called for by this Schedule 1.01(c).1 (and
other Schedules referred to herein, other than Schedule 1.01(c).24) in accordance with
Schedule 1.01(c).28 with respect to Forward C & I Positions (t, T), Forward Mass Positions
(t, T) and Forward Hedge Positions (t, T), and shall provide the other information updates called
for herein at the times or on the dates (as applicable) specified in the relevant Schedules below,
each as described below.

REPS shall provide the data specified in Schedule 1.01(c).24 for each Business Day by no
later than 12:00 p.m. Central time on the next succeeding Business Day.

With respect to each Risk Leg that is included in the data required to be provided under this
Schedule 1.01(c), such data will be delivered to the Sleeve Provider in the format called
for by Schedules 1.01(c).4, 1.01(c).5a.1, 1.01(c).5a.2 and 1.01(c).5b or as
modified by mutual agreement of the Parties. Insofar as Schedules 1.01(c).4, 1.01(c).5a.1,
1.01(c).5a.2 and 1.01(c).5b call for pricing data with respect to Risk Legs, REPS will
not be required to provide such pricing data (provided that nothing herein shall limit the Sleeve
Provider’s right to otherwise request such information in accordance with Section 6.02(g) of the
CSRA). Where indicated below REPS shall provide data for Customer Types or Customer Sub-Types by
giving aggregate volume for Customers where the Aggregation Attributes specified below are the
same for such Customer Type or Customer Sub-Type. All volumes will be expressed as megawatt hours
or MWh.

Customers will only be included if they have a binding contract with REPS for Accepted Retail
Products, except insofar as Customers are included for MTMH and MTMHO Risk Legs in accordance
herewith for Accepted Retail Products. All references herein to “Customers” are to Customers so
included.

It is understood that the contracts for those Customers that have contracts may not refer to
information using the same terms as are used herein including those for Customer Sub-Types, Risk
Legs, elements of pricing structure and other terms used in specifying data called for in
Schedules 1.01(c).4, 1.01(c).5a.1, 1.01(c).5a.2 and 1.01(c).5b; however, REPS will
provide data based on the substance of what is called for and not on a mechanical application of
labels.

Any forecast or projected amount required to be provided by REPS under this Schedule 1.01(c)
(including pursuant to the following: paragraphs [A.1.b), A.2.b), A.3.b), A.4.b), A.6.b),
A.6.c) and A.7; B.1.b), B.1.c), B.2.b), B.2.c), B.3.b), B.3.c), B.4.b), B.4.c), B.5.b) and B.5.c);
and E.3 of Schedule 1.01(c).l,]), and any adjustments by REPS of amounts required to be provided
by REPS pursuant to this Schedule 1.01(c) based on known or expected regulatory or
operational changes or other factors as permitted by this Schedule 1.01(c), in each case shall at
all times be consistent with the base case amounts used in forecast or projected information which
the applicable Reliant Retail Obligor (i) uses in its internal management reporting, (ii) provides
to its board of directors, (iii) makes available to financial analysts or investors and (iv) uses
in its reporting to the Securities and Exchange Commission, each to the extent applicable (and
using

Schedule 1.01(c) to CSRA

6

 

the most current of such information so used, provided or made available if not all of such
categories of information are consistent with each other). On request REPS will promptly share the
most recent of such forecast or projected information used, made available or provided as
described above with the Sleeve Provider and will reconcile the amount reported pursuant to this
Schedule 1.01(c) with such information.

Any historical amount required to be provided by REPS under this Schedule 1.01(c) shall at
all times be consistent with the actual amounts which the applicable Reliant Retail Obligor (i)
uses in its internal management reporting, (ii) provides to its board of directors, (iii) makes
available to financial analysts or investors and (iv) uses in its reporting to the Securities and
Exchange Commission, each to the extent applicable (and using the most current of such information
so used, provided or made available if not all of such categories of information are consistent
with each other).

(A) Forward C&I Positions (t, T). Data for Forward C&I Positions (which shall include each of
the positions defined below) shall be classified by Risk Leg and Options as follows:

	 	1.	 	FP Positions (t, T): “FP Positions (t, T)” are forward positions embedded in
C&I contracts pursuant to which a Reliant Retail Obligor delivers Energy to C&I Customers
based on the following pricing structure:

	 	 	 	Price = Fixed Price, expressed in $/MWh
	 
	 	a)	 	Aggregation: Volume (t, T) and shall be calculated using the following Aggregation Attributes (see
Schedule  1.01(c).3
for definitions of the
Aggregation Attributes):

	 	-	 	Load Zone,
	 
	 	-	 	Peak Period, and
	 
	 	-	 	Delivery/Settlement Month

	 	b)	 	Volume (t, T): Aggregated volume of all FP Positions (t, T), as evidenced by
executed customer contracts.

	 	2.	 	MGI Positions (t, T). “MGI Positions (t, T)” are forward monthly gas index
positions embedded in C&I contracts pursuant to which a Reliant Retail Obligor delivers
Energy to C&I Customers based on the following pricing structure:

	 	 	 	Price = {Heat Rate times Monthly Gas Index} plus Fixed Adder,
expressed in $/MWh
	 
	 	 	 	Herein “Heat Rate” refers to a fixed numerical multiplier applied to a gas index in
accordance with the contract with respect to which amounts are being reported.
	 
	 	 	 	Herein “Fixed Adder” refers to a fixed amount added to price as per the contract
with respect to which amounts are being reported.

Schedule 1.01(c) to CSRA

7

 

	 	a)	 	Aggregation: REPS will provide the transactional data but
the aggregation shall
not be performed by REPS. Volume (t, T) shall be calculated by the Sleeve
Provider using the following Aggregation Attributes (see Schedule
1.01(c).3 for definitions of the Aggregation Attributes):

	 	-	 	Load Zone,
	 
	 	-	 	Gas Index Name,
	 
	 	-	 	Peak Period, and
	 
	 	-	 	Delivery/Settlement Month

	 	b)	 	Volume (t, T): Aggregated volume of all MGI Positions (t,
T), as evidenced by executed customer contracts.

	 	3.	 	CAPEHR Positions (t, T). “CAPEHR Positions (t, T)” are forward heat rate
positions embedded in C&I contracts pursuant to which a Reliant Retail Obligor delivers
Energy to C&I Customers based on the following pricing structure:

	 	 	 	Price = {Heat Rate times Monthly or Daily Gas Index} plus Fixed
Adder, expressed in $/MWh
	 
	 	a)	 	Aggregation: REPS will provide the transactional data but
the aggregation shall not be performed by REPS. Volume (t, T) shall be calculated by the Sleeve
Provider using the following Aggregation Attributes (see Schedule
1.01(c).3 for definitions of the Aggregation Attributes):

	 	-	 	Load Zone,
	 
	 	-	 	Gas Index Name,
	 
	 	-	 	Peak Period, and
	 
	 	-	 	Delivery/Settlement Month

	 	b)	 	Volume (t, T): Aggregated volume of all CAPEHR Positions
(t, T), as evidenced by executed customer contracts.
	 
	 	 	 	

	 	4.	 	MCPE Positions (t, T). “MCPE Positions (t, T)” are forward market clearing
price of energy positions embedded in C&I contracts pursuant to which a Reliant Retail
Obligor delivers Energy to C&I Customers based on the following pricing structure:

	 	 	 	Price = {Factor MCPE times Average Monthly MCPE} plus Fixed Adder,
expressed in $/MWh

	 	 	 	“Average Monthly MCPE” means, (i) for C&I Customers in ERCOT business, the simple
average of the HMCPE for a calendar month.

Subject to the terms of Agreement Regarding Additional Accepted Product #2 between REPS and the
Sleeve Provider dated as of November 8, 2006:

Schedule 1.01(c) to CSRA

8

 

	 	1.	 	“HMCPE” means, for the ERCOT congestion management zone or Load Zone, as the
case may be, in which a retail customer’s meters are located, the simple average MCPE
for the hour.
	 
	 	2.	 	“MCPE” means the greater of (a) zero or (b) (i) before implementation of the Texas
Nodal Market, ERCOT’s market clearing price of Energy for a designated ERCOT
settlement interval associated with a congestion management zone, as posted by ERCOT,
and (ii) after implementation of the Texas Nodal Market, the Settlement Point Price(s)
(Day-Ahead or Real-Time) determined by ERCOT for the ERCOT Load Zones
associated with a retail customer’s meters. As used herein, the terms “Day Ahead”,
“Real-Time”, “Settlement Point Price” and “Load Zone” have the meaning set forth in the
Texas Nodal Protocols approved by the Public Utilities Commission of Texas and
published by ERCOT as of October 1, 2006, as amended. As used herein,
“ERCOT Load Zone” means a “load zone”, as determined by ERCOT, as to which it
publishes a MCPE price.
	 
	 	 	 	“Factor MCPE” means a multiplier to be applied to MCPE-based pricing products.

	 	a)	 	Aggregation. REPS will provide the transactional data but the
aggregation shall not be performed by REPS. Volume (t, T) shall be computed by the Sleeve
Provider considering the following Aggregation Attributes (see Schedule
1.01(c).3 for definitions of the Aggregation Attributes):

	 	-	 	Load Zone,
	 
	 	-	 	Peak Period, and
	 
	 	-	 	Delivery/Settlement Month

	 	b)	 	Volume (t, T): Aggregated volume of all MCPE Positions (t, T), as
evidenced by executed customer contracts.

	 	3.	 	Capacity Positions (t, T). “Capacity Positions (t, T)” are fixed payments made to
a Reliant Retail Obligor under CAPE Customer Sub-Type contracts calculated as follows:

	 	 	 	∑ (for all delivery months T, for all Customers under a CAPE Customer Sub-Type)
calculated for each Customer {Billing Volume (t, T, for such Customer) times Capacity Rate (t, T, for
such Customer)}
	 
	 	a.	 	Aggregation: Capacity Positions (t, T) shall be calculated by REPS
using the following Aggregation Attributes (see Schedule 1.01(c).3 for definitions of the
Aggregation Attributes):

	 	-	 	Delivery/Settlement Month

	 	b.	 	Billing Volume (t, T, for the customer N): The “Billing
Volume” is determined by REPS as the “Billing Volume” used by REPS to compute the Capacity

Schedule 1.01(c) to CSRA

9

 

	 	 	 	Payments to be charged to each C&I Customer under a CAPE Customer Sub-Type contract
(referred to as “customer N”), expressed in kW.
	 
	 	c.	 	Capacity Rate (t, T, for the customer N): Capacity Rate represents
the price per unit of “Billing Volume” charged by a Reliant Retail Obligor to each
C&I Customer under a CAPE Customer Sub-Type contract (referred to as “customer
N”), expressed in $/kW-month.

	 	 	 	Capacity Positions (t, T) are expressed in Dollars.
	 
	 	4.	 	Option Positions (t, T). “Option Positions (t, T)” are customized option like
pricing contained in physical delivery retail electricity contracts. The Option Positions (t,
T) main Attributes, including:

	 	-	 	Physical/Financial,
	 
	 	-	 	Commodity,
	 
	 	-	 	Buy/Sell,
	 
	 	-	 	Monthly Quantity (t, T),
	 
	 	-	 	Index,
	 
	 	-	 	Put/Call,
	 
	 	-	 	Strike Price (t, T),
	 
	 	-	 	Premium, and
	 
	 	-	 	Expiry/Maturity

	 	 	 	shall be reported separately according to Schedule 1.01(c).5b.

(B) Forward Mass Positions (t, T). Forward Mass Positions (which shall include each of the
positions described below) shall be classified by Risk Leg as follows:

	 	1.	 	FP Positions (t, T). “FP Positions (t, T)” are forward positions embedded in Mass
contracts pursuant to which a Reliant Retail Obligor delivers Energy to Mass Customers based
on the following pricing structure:

	 	 	 	Price = Fixed Price, expressed in $/MWh
	 
	 	a.	 	Aggregation: Volume (t, T) shall be computed by REPS considering the
following Aggregation Attributes (see Schedule 1.01(c).3 for definitions of
the Aggregation Attributes):

	 	-	 	Load Zone,
	 
	 	-	 	Peak Period, and
	 
	 	-	 	Delivery/Settlement Month

	 	b.	 	Volume (t, T). Aggregated volume of all FP Positions (t, T), as
evidenced by executed Customer contracts, forecasted Customer usage volume and
forecasted Customer counts.

Schedule 1.01(c) to CSRA

10

 

	 	2.	 	MTMH Positions (t, T). “MTMH Positions (t, T)” are forward Mass month-to-month

volumes hedged using fixed price instruments:

	 	a)	 	Aggregation: Volume (t, T) shall be computed by REPS
considering the following Aggregation Attributes (see Schedule 1.01(c).3 for definitions of the Aggregation Attributes):

	 	-	 	Load Zone,
	 
	 	-	 	Peak Period, and
	 
	 	-	 	Delivery/Settlement Month

	 	b)	 	Volume (t, T): Aggregated volume of all MTMH Positions (t, T),
based on forecasted Customer usage volume and forecasted Customer counts.

	 	3.	 	MTMHO Positions (t, T). “MTMHO Positions (t, T)” are forward Mass
month-to-month volumes hedged using option instruments:

	 	a.	 	Aggregation: Volume (t, T) shall be computed by REPS
considering the following Aggregation Attributes (see Schedule 1.01(c).3 for definitions of the Aggregation Attributes):

	 	-	 	Load Zone,
	 
	 	-	 	Peak Period, and
	 
	 	-	 	Delivery/Settlement Month

	 	b.	 	Volume (t, T): Aggregated volume of all MTMHO Positions (t, T),
based on forecasted Customer usage volume and forecasted Customer counts.

(D) Forward Hedge Positions (t, T):

“Forward Hedge Positions” shall be all the individual wholesale trades entered into by a
Reliant Retail Obligor in order to hedge the exposure of the Reliant Retail Obligors (including
liquidations of hedges) regardless of when the applicable trade was entered into. Volumes and
prices shall be expressed on a delivery-month basis. Each Business Day the trade details specified
in Schedules 1.01(c).16 and 1.01(c).17 shall be transferred by REPS to the Sleeve
Provider utilizing the formats included in Schedules 1.01(c).16 and 1.01(c). 17.
These trades shall be of the following types:

          - Physical Power Purchases (including shaped products)

          - Financial Power Swaps

          - Financial Gas Swaps

          - Physical Power Options

          - Financial Power Options

          - Financial Gas Options

Schedule 1.01(c) to CSRA

11

 

          - Financial Heat Rate Swaps

          - Financial Heat Rate Options

          - Tolling Agreements

          - Power Basis Swaps

          - Gas Basis Swaps

          - Other trades that currently are or in the future become Accepted Products (as such term
is defined in the CSRA), but excluding those trades described in subpart (a)(iii) of the definition
of Accepted Products.

(E) Miscellaneous:

	 	1.	 	Current Month: For purposes of computing Risk Limits, the following
assumptions shall be made regarding the Forward C&I Positions (except Options) and
Forward Mass Positions corresponding to the period that starts with day “t+1” until the
end of the corresponding month (“Current Month”):

	 	a.	 	Volumes (t, T) shall be the last monthly Volume (t, T) provided by REPS
(i.e. provided the last Business Day of the previous month).
	 
	 	b.	 	Volumes (t, T) for all the positions and Capacity Positions (t, T)
shall be pro-rated based on the number of days in the Balance of Month divided by the total number

of days in the applicable month;

	 	2.	 	Volumes (t, T) for all C&I Customers shall reflect the expected load factor of
the Customers as indicated in the contracts. For Mass Customers, the Volumes (t, T) shall
reflect load factors based on typical residential and small business load profiles (as
provided on an estimated basis by ERCOT).
	 
	 	3.	 	Accepted Retail Products: For purposes of the CSRA and this Schedule
1.01(c), “Accepted Retail Products” means (i) retail power products for Customers that have
one
or a combination of the Risk Legs and Options described in part II.c. and II.d. of this
Schedule 1.01(c), in each case having a “tenor” of no more than [2] years and [six]
months (“tenor” meaning the time between the initial inclusion of such product in the
data provided by REPS to the Sleeve Provider and the final delivery date of such product)
and (ii) other retail structured products as may be approved by the Sleeve Provider,
including in such approval such related changes to the terms and conditions of the CSRA
and this Schedule 1.01(c) as REPS and the Sleeve Provider may mutually agree, but
with
approval of such other structured products not to be unreasonably withheld, conditioned
or delayed unless the impact thereof on the Risk Limits and Current Mark-To-Market are
not measurable using the data with respect to such other retail structured products that
would be expressly called for by this Schedule 1.01(c). In order to obtain any
such
approval of other structured products described in the foregoing clause (ii), REPS shall
provide notice of such new retail structured product to the Sleeve Provider and REPS and
the Sleeve Provider shall work cooperatively in good faith to determine and agree upon
any modifications that may be necessary to this Schedule 1.01(c).,
	 
	 	4.	 	Data Failure Events:

Schedule 1.01(c) to CSRA

12

 

	 	a)	 	If, in the absence of a Force Majeure Event having occurred and continuing in respect of
REPS or any Other Reliant Retail Obligor, REPS shall fail to provide all the data as
required herein to the Sleeve Provider (i) regarding its executed trades on any Business
Day, in accordance with the time frames set forth in Schedule 1.01(c).28, and regarding
the data specified in Schedule 1.01(c).24 for any Business Day, by 10:00 a.m. Central
time on the next succeeding Business Day, or (ii) in the proper format contemplated
herein (each, a “Data Failure Event”) on any Business Day or Business Days, then REPS
shall use its commercially reasonable efforts to cure such failure as promptly as possible
and shall be required to provide to the Sleeve Provider as soon as reasonably practicable
on the next succeeding Business Day, good faith estimates, certified by the Chief Risk
Officer, of the trades which it has entered into on each such Business Day in a format that
can be used to calculate Risk Limits and Current Mark-to-Market, and the Sleeve
Provider will use such good faith estimates in its calculations of Risk Limits and Current
Mark-to Market with respect to such Business Days. If such Data Failure Event
continues for two Business Days, the Sleeve Provider shall give notice to REPS that such
Data Failure Event (if not excused by a Force Majeure Event having occurred and
continuing) may cause an Event of Default under the CSRA if it continues for three more
Business Days. If such Data Failure Event continues for five Business Days (from the
beginning of such Data Failure Event) (and is not excused by a Force Majeure Event
having occurred and continuing), the Sleeve Provider may declare an Event of Default
under the CSRA with such consequences as are set forth therein (herein and therein a
“Data Failure Event of Default”).
	 
	 	b)	 	A “Force Majeure Event” means, in respect of an Affected Party, an event beyond the
reasonable control of the Affected Party that the Affected Party is unable to prevent,
avoid or overcome through the exercise of diligent efforts and that is not the result of the
Affected Party’s fault or negligence or failure to comply with any provision of the CSRA.
The following events, among others, shall constitute Force Majeure: act of God;
landslide; lightning; earthquake; fire; explosion; flood; storm; hurricane; tornado;
insurrection; war; blockade; riot; civil disturbance; sabotage; and embargo and, to the
extent satisfying the foregoing conditions, failures of hardware, software, systems and
processes. Force Majeure shall not be based on (i) the Reliant Retail Obligors’ inability
to use or resell Accepted Products; (ii) the loss or failure of supply of Accepted Products;
or (iii) the ability to obtain better economics under transactions other than those under the
CSRA. An “Affected Party” for purposes hereof means a Party who fails to perform in a
timely manner its obligations hereunder and in the case of REPS includes a failure to
perform as a result of an event affecting REPS or any Other Reliant Retail Obligor.
	 
	 	5.	 	Change of Format. The Parties may change the format of the data to be provided
hereunder by mutual agreement.

Schedule 1.01(c) to CSRA

13

 

Schedule
1.01(c).2

[intentionally omitted]

Schedule 1.01(c) to CSRA

14

 

Schedule 1.01(c).3 

Definition of Certain Aggregation Attributes

[No Change to Existing Schedule]

Schedule 1.01(c) to CSRA

15

 

Schedule 1.01(c).4 

Retail Non-Options Mass & C&I Template

[No Change to Existing Schedule]

Schedule 1.01(c) to CSRA

16

 

Schedule 1.01(c).5a.1 

Retail Non-options Template (ERCOT only)

[No Change to Existing Schedule]

Schedule 1.01(c) to CSRA

17

 

Schedule 1.01(c).5a.2 

Retail Non-options Template (ERCOT only)

[No Change to Existing Schedule]

Schedule 1.01(c) to CSRA

18

 

Schedule 1.01(c).5b 

Retail Options Template (ERCOT only)

[No Change to Existing Schedule]

Schedule 1.01(c) to CSRA

19

 

Schedules
1.01(c).6 through 1.01(c).15 

[intentionally omitted]

Schedule 1.01(c) to CSRA

20

 

Schedule 1.01(c).16 

Wholesale Standard Deal Template

[No Change to Existing Schedule]

Schedule 1.01(c) to CSRA

21

 

Schedule
1.01(c).17 

Wholesale Structured Deal Template

[No Change to Existing Schedule]

Schedule 1.01(c) to CSRA

22

 

Schedule 1.01(c).18 

[intentionally omitted]

Schedule 1.01(c) to CSRA

23

 

Schedule 1.01(c).19 

Sleeve Provider Data to REPS

1. Exposure Reports.

The Sleeve Provider shall provide to REPS on or prior to the first Business Day of each
month, a report (an “Exposure Report”) in a format to be agreed, and containing the following
elements, in each case, determined as of the last Business Day of the previous month:

	 	 	 	 	 	 	 	 	 
	 

	 	 	1.	 	 	A
	 	single amount in Dollars for the total Current Mark-to-Market;
	 
	 	 	 	 	 	 	 	 
	 

	 	 	2.	 	 	A
	 	breakdown of the total Current Mark-to-Market by:
	 
	 	 	 	 	 	 	 	 
	 

	 	 	 	 	 	 	 	a. Delivery Month; and
	 
	 	 	 	 	 	 	 	 
	 

	 	 	 	 	 	 	 	b. Trade Type Code.

In addition, the Sleeve Provider shall provide to REPS on the 15th day of each month (or if
such day is not a Business Day, the next succeeding Business Day), a report (a
“Preliminary Exposure Report”) in a format to be agreed and containing the following
elements, in each case, determined as of the first Business Day immediately preceding the
15th day of such month:

	 	 	 	 	 	 	 	 	 
	 

	 	 	1.	 	 	A
	 	single amount in Dollars for the total Current Mark-to-Market;
	 
	 	 	 	 	 	 	 	 
	 

	 	 	2.	 	 	A
	 	breakdown of the total Current Mark-to-Market by:
	 
	 	 	 	 	 	 	 	 
	 

	 	 	 	 	 	 	 	a. Delivery Month; and
	 
	 	 	 	 	 	 	 	 
	 

	 	 	 	 	 	 	 	b. Trade Type Code.

2. Risk Limit Reports.

Concurrently with the delivery of each Exposure Report and Preliminary Exposure Report, the
Sleeve Provider shall provide to REPS a report (a “Risk Limit Report”) in a format to be agreed
and containing the following elements, in the case, determined as of the last Business Day of
the previous month, or determined as the first Business Day immediately preceding the
15th day of such month (as applicable):

	 	1.	 	Gas Equivalent Position as defined by Section VII of the REPS Retail Risk
Policy broken out by:

	 	a.	 	Forward C&I Positions (t,T) Forward Mass Positions (t,T) and
Forward Hedged Position (t,T); and
	 
	 	b.	 	Delivery Month.

	 	2.	 	Natural Gas Basis Position as defined by Section VII of the REPS Retail Risk
Policy broken out by:

	 	a.	 	Forward C&I Positions (t,T), Forward Mass Positions (t,T),
and Forward Hedged
Position (t,T);
	 
	 	b.	 	Basis Location; and
	 
	 	c.	 	Delivery Month

	 	3.	 	Power Average Daily Peak as defined by Section VII of the REPS Retail Risk
Policy
broken out by:

Schedule 1.01(c) to CSRA

24

 

	 	a.	 	Forward C&I Positions (t,T), Forward Mass Positions (t,T), and Forward Hedged

Position (t,T); and
	 
	 	b.	 	Delivery Month

	 	4.	 	Power Basis as defined by Section VII of the REPS Retail Risk Policy broken out by

	 	a.	 	Forward C&I Positions (t,T), Forward Mass Positions (t,T) and Forward
Hedged
Position (t,T);
	 
	 	b.	 	ERCOT Load Zone;
	 
	 	c.	 	Delivery Month

3. General.

All Exposure Reports, Preliminary Exposure Reports and Risk Limit Reports (collectively, the
“Merrill Reports”) will be transmitted by the Sleeve Provider to REPS via email or other
electronic format to be agreed.

Additional supporting data will be provided by the Sleeve Provider upon request to REPS as soon as
reasonably practicable to assist with reconciliation and trouble-shooting.

REPS may request additional supporting data and breakdowns of Current Mark-to-Market and Risk
Limits calculations that are reasonably necessary to verify calculations and assist with
reconciliation and trouble-shooting, and the Sleeve Provider will provide such data as soon as
reasonably practicable in light of the circumstances of the request.

Notwithstanding
anything in this Schedule 1.01(c) to the contrary, in no event will the
Sleeve Provider be required to make available to REPS any Curve Inputs except for those actually
used by the Sleeve Provider in preparing the Merrill Reports.

Schedule 1.01(c) to CSRA

25

 

Schedule 1.01(c).20 

[intentionally omitted]

Schedule 1.01(c) to CSRA

26

 

Schedule 1.01(c).21 

[intentionally omitted]

Schedule 1.01(c) to CSRA

27

 

Schedule 1.01(c).22 

[intentionally omitted]

Schedule 1.01(c) to CSRA

28

 

Schedule 1.01(c).23 

[intentionally omitted]

Schedule 1.01(c) to CSRA

29

 

Schedule 1.01(c).24 

Credit Exposure

	 	 	 	 	 	 	 
	Counterparty	 	Breakdown	 	Gross Exposure	 	Gross Obligation
	Counterparty A

	 	Time All	 	 	 	 
	Counterparty A

	 	Current Month Delivered All	 	 	 	 
	Counterparty A

	 	Current Month MTM All	 	 	 	 
	Counterparty A

	 	Forward MTM All	 	 	 	 
	Counterparty A

	 	Prior Month All	 	 	 	 
	Counterparty B

	 	Time All	 	 	 	 
	Counterparty B

	 	Current Month Delivered All	 	 	 	 
	Counterparty B

	 	Current Month MTM All	 	 	 	 
	Counterparty B

	 	Forward MTM All	 	 	 	 
	Counterparty B

	 	Prior Month All	 	 	 	 

With respect to any Counterparty that is party to more than one Power and Hedging
Contract, REPS shall separately provide the above data for each such contract.

Schedule 1.01(c) to CSRA

30

 

Schedule 1.01(c).25 

[intentionally omitted]

Schedule 1.01(c) to CSRA

31

 

Schedule 1.01(c).26 

[intentionally omitted]

Schedule 1.01(c) to CSRA

32

 

Schedule 1.01(c).27 

[intentionally omitted

Schedule 1.01(c) to CSRA

33

 

Schedule 1.01(c).28 

Deal Entry

1. Retail Deal Entry

REPS shall provide data to the Sleeve Provider on or before 9:00 p.m. Central time on each Business
Day with respect to retail contracts that are received by REPS’ Retail Pricing Closing Desk by 2:30
p.m. Central time that same day. Retail contracts that are received by REPS’ Retail Pricing Closing
Desk after 2:30 p.m. Central time shall be subject to the volume and term provisions of REPS’
Retail Risk Policy late closing provisions. REPS shall immediately notify the Sleeve Provider in
writing if any such late closed retail contracts receive Retail Risk Policy waivers with respect to
volume or term provisions.

2. Exchange Traded Transactions

REPS shall provide data to the Sleeve Provider on or before 9:00 p.m. Central time on each Business
Day with respect to exchange traded transactions and the associated EFS/EOO/ICE Block transactions
and Related Mirror OTC Swaps that are executed by 2:30 p.m. Central time that same day.

3. Over-the-Counter Day-Ahead, Balance-of-Month, and Term Transactions

REPS shall provide data to the Sleeve Provider on or before 9:00 p.m. Central time on each
Business Day with respect to over-the-counter day-ahead, balance-of-month, and term
transactions that are executed by 4:00 p.m. Central time that same day.

4. Real Time Transactions

REPS shall provide data to the Sleeve Provider on or before 9:00 p.m. Central time on each Business
Day with respect to real time transactions that are entered into REPS’ system by 4:00 p.m. Central
time that same day. REPS shall not be required to modify its existing practice of entering real
time transactions by the end of the real time trading shifts.

5. Originated Transactions

Originated transactions include all transactions that REPS determines to require routing for
approval by person(s) other than a trader executing a standard transaction by telephone, instant
messenger, electronic platform or other acceptable means. Originated transactions include
transactions that are negotiated by an originator, confirmations with non-standard negotiated
language, and transactions that cannot be routinely entered into REPS’ deal capture & valuation
system. For greater clarity, varying the price and/or the volume by month and/or peak versus
off-peak in a confirmation does not constitute non-standard negotiated language, but each of the
following does constitute non-standard negotiated language: (a) any other variation of price

Schedule 1.01(c) to CSRA

34

 

and/or volume; (b) any confirmation that varies the terms of the underlying ISDA or EEI master
agreement; and (c) any other material change to a standard ISDA/EEI confirmation.

For originated transactions:

	 	a.	 	REPS shall provide to the Sleeve Provider the trade
confirmations upon execution (as soon as possible, by the
end of the day the execution occurs). For purposes of this
Schedule 1.01(c).28, “execution” refers to the moment REPS
is legally bound to the trade, i.e. the transaction is
agreed by the parties, including, but not limited to,
agreement utilizing telephone, fax, instant messenger
devices, etc., as opposed to when the confirmations are
actually signed and delivered by the parties to the trade.
	 
	 	b.	 	REPS shall provide to the Sleeve Provider as promptly
as practicable other information related to originated
transactions as the Sleeve Provider reasonably requests.

The data template utilized in the daily transfer of originated transactions from
REPS to the Sleeve Provider shall be provided by 4:00 p.m. Central Time and shall
contain any originated transactions executed prior to 12:00 p.m. Central Time that
day. Originated transactions executed after 12:00 p.m. Central Time will be
included in the next Business Day’s template.

REPS shall immediately inform the Sleeve Provider in the event that REPS waives its Wholesale
Risk Policy to permit a later deal entry in circumstances such as multiple originated
transactions being executed on the same day.

REPS and the Sleeve Provider shall cooperate to ensure that each Party properly models
originated transactions. The Parties acknowledge and agree that due to the complexity of
certain originated transactions, corrections may need to be made to the data associated with
originated transactions following the time that REPS provides data for the transaction to the
Sleeve Provider. The Parties further acknowledge and agree that unintentional errors in the
data template for originated transactions made without gross negligence or willful misconduct
will not be considered risk violations for the purpose of Schedule 1.01(a) to the CSRA.

6. Other

To the extent that data associated with transactions that do not meet the above time deadlines
is available in time to be provided to the Sleeve Provider on or before 9:00 p.m. Central time
on any given Business Day utilizing the applicable data transfer infrastructure, REPS will not
be precluded from doing so.

Schedule 1.01(c) to CSRA

35

 

Schedule 1.01(c).29 

[intentionally omitted]

Schedule 1.01(c) to CSRA

36

 

Schedule 1.01(c).30 

[intentionally omitted]

Schedule 1.01(c) to CSRA

37

 

Index of Defined Term

	 	 	 	 	 
	(t)
	 	 	1	 
	(T)
	 	 	1	 
	Accepted Retail Products
	 	 	12	 
	Affected Party
	 	 	13	 
	Aggregated 
	 	 	5	 
	Average Monthly MCPE 
	 	 	8	 
	Billing Volume 
	 	 	9	 
	C&I 
	 	 	3	 
	CAPACITY 
	 	 	3	 
	Capacity Positions (t, T) 
	 	 	9	 
	CAPE 
	 	 	3	 
	CAPEHR 
	 	 	3	 
	CAPEHR Positions (t, T) 
	 	 	8	 
	Commercial & Industrial 
	 	 	3	 
	CSRA 
	 	 	1	 
	Current
Mark-to-Market 
	 	 	1	 
	Current Month
	 	 	12	 
	Curve Inputs 
	 	 	2	 
	customer N
	 	 	10	 
	Customer Sub-Type 
	 	 	3	 
	Customer Type
	 	 	3	 
	Customers 
	 	 	6	 
	Data Failure Event
	 	 	13	 
	Data Failure Event of Default
	 	 	13	 
	delivery month 
	 	 	1	 
	Delivery Month 
	 	 	1	 
	ERCOT Load Zone 
	 	 	9	 
	execution
	 	 	35	 
	Factor MCPE 
	 	 	9	 
	Fixed 
	 	 	3	 
	Fixed Adder 
	 	 	7	 
	Force Majeure Event
	 	 	13	 
	Forward C&I Positions
	 	 	7, 24, 25	 
	Forward Hedge Positions
 
	 	 	11	 
	FP 
	 	 	3	 
	FP Positions (t, T)
	 	 	7, 10	 
	Heat Rate 
	 	 	7	 
	HMCPE 
	 	 	9	 
	Mark-to-Market 
	 	 	1	 
	Mass 
	 	 	3	 
	MCPE 
	 	 	9	 
	MCPE 
	 	 	3	 
	MCPE Positions (t, T) 
	 	 	8	 
	Merrill LIBOR Curve 
	 	 	2	 

Schedule 1.01(c) to CSRA

38

 

	 	 	 	 	 
	MGI
	 	 	3	 
	MGI Positions (t, T) 
	 	 	7	 
	MTMH
	 	 	3	 
	MTMH Positions (t, T)
	 	 	11	 
	MTMHO 
	 	 	3	 
	MTMHO Positions (t, T)
	 	 	11	 
	Option Positions (t, T) 
	 	 	10	 
	Options
	 	 	4	 
	Residential Mass
	 	 	3	 
	Risk Legs 
	 	 	3	 
	Small Business Mass
	 	 	3	 
	tenor 
	 	 	12	 

Schedule 1.01(c) to CSRA

39

 

Schedule 1.01(d)

To Amended and Restated Credit Sleeve and Reimbursement Agreement

Exposure Step-Down Schedule (ESDS) and Fee Schedule

[***]

 

			
	***	 	The content of this Schedule 1.01(d) (consisting of 1 page) has been omitted and filed
separately with the Securities and Exchange Commission. Confidential treatment has been
requested with respect to the omitted portions.

 

     

Schedule 1.01(e) 
To Amended and Restated Credit Sleeve and Reimbursement Agreement

Trademarks

	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 
	Case No	 	Trademark Name	 	Tmk Status	 	App. No,	 	FII Date	 	Reg. No.	 	Reg. Date	 	Country Name	 	Class	 	Action Due	 	Due Date	 	Owner
	069382.0194.001HO

	 	POWER. CARD and Design
	 	Registered
	 	 	75940944	 	 	10-Mar-2000
	 	 	2428481	 	 	13-Feb-2001
	 	United States of
America
	 	 	35,42	 	 	Renewal Due
	 	13-Feb-2011
	 	Reliant Energy Retail Holdings, LLC
	069382.0194.002

	 	E-SENSE (Stylized)
	 	Pending
	 	 	77581566	 	 	29-Sep-2008
	 	 	 	 	 	 	 	United States of
America
	 	 	9,36,37,38,41,42	 	 	Pre-Reg Stat Chk
	 	29-Mar-2009
	 	Reliant Energy Trademark Trust
	069382.9319N0

	 	RELIANT ENERGY &

Design
	 	Registered
	 	 	75623514	 	 	19-Jan-1999
	 	 	2983403	 	 	9-Aug-2005
	 	United States of
America
	 	 	42	 	 	Aff of Use - 5 Yr (Open)
	 	9-Aug-2010
	 	Reliant Energy Trademark Trust
	069382 0322HO

	 	RELIANT ENERGY &

Design
	 	Registered
	 	 	75623512	 	 	19-Jan-1999
	 	 	2681501	 	 	28-Jan-2003
	 	United States of
America
	 	 	36	 	 	Aff of Use - 5 Yr (Open)
	 	28-Jan-2008
	 	Reliant Energy Trademark Trust
	069182.0324HO

	 	RELIANT ENERGY &

Design
	 	Registered
	 	 	75623308	 	 	19-Jan-1999
	 	 	2895973	 	 	19-Oct-2004
	 	United States of
America
	 	 	39	 	 	Aff of Use - 5 Yr (Open)
	 	19-Oct-2009
	 	Reliant Energy Trademark Trust
	069382.0325HO

	 	RELIANT ENERGY &

Design
	 	Registered
	 	 	75623309	 	 	19-Jan-1999
	 	 	2666766	 	 	24-Dec-2002
	 	United States of
America
	 	 	42	 	 	Renewal Due
	 	24-Dec-2012
	 	Reliant Energy Trademark Trust
	069382:0330HO

	 	RELIANT ENERGY &

Design
	 	Registered
	 	 	75623509	 	 	19-Jan-1999
	 	 	2747525	 	 	5-Aug-2003
	 	United States of
America
	 	 	35	 	 	Aff of Use - 5 Yr (Open)
	 	5-Aug-2008
	 	Reliant Energy Trademark Trust
	069382.0405HO

	 	RELIANT
	 	Registered
	 	 	78311694	 	 	9-Oct-2003
	 	 	2886710	 	 	21-Sep-2004
	 	United States of
America
	 	 	39	 	 	Aff of Use - 5 Yr(Open)
	 	21-Sep-2009;
	 	Reliant Energy Trademark Trust
	069382.0406HO

	 	RELIANT
	 	Registered
	 	 	78311695	 	 	9-Oct-2003
	 	 	2886711	 	 	21-Sep-2004
	 	United States of
America
	 	 	40	 	 	Aff of Use - 5 Yr (Open)
	 	21-Sep-2009
	 	Reliant Energy Trademark Trust
	069382.0454HO

	 	RELIANT PARK
	 	Registered
	 	 	76195468	 	 	17-Jan-2001
	 	 	2897601	 	 	26-Oct-2004
	 	United States of
America
	 	 	18	 	 	Aff of Use - 5 Yr (Open)
	 	26-Oct-2009
	 	Reliant Energy Trademark Trust
	069382.0457HO

	 	RELIANT PARK
	 	Registered
	 	 	76195465	 	 	17-Jan-2001
	 	 	2897600	 	 	26-Oct-2004
	 	United States of
America
	 	 	25	 	 	Aft of Use - 5 Yr (Open)
	 	26-Oct-2009
	 	Reliant Energy Trademark Trust
	069382.0461HO

	 	RELIANT PARK
	 	Registered
	 	 	76195473	 	 	17-Jan-2001
	 	 	2884611	 	 	14-Sep-2004
	 	United States of
America
	 	 	35	 	 	Aff of Use - 5 Yr (Open)
	 	14-Sep-2009
	 	Reliant Energy Trademark Trust

Schedule 1.01(e) to CSRA

 

 

     

	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 
	Case No	 	Trademark Name	 	Tmk Status	 	App. No,	 	FII Date	 	Reg. No.	 	Reg. Date	 	Country Name	 	Class	 	Action Due	 	Due Date	 	Owner
	069382.0463HO

	 	RELIANT PARK
	 	Registered
	 	 	76195471	 	 	17-Jan-2001
	 	 	2935264	 	 	22-Mar-2005
	 	United States of
America
	 	 	41	 	 	Aff of Use - 5 Yr(Open)
	 	22-Mar-2010
	 	Reliant Energy

Trademark Trust
	069382.0464HO

	 	RELIANT PARK
	 	Registered
	 	 	76195470	 	 	17-Jan-2001
	 	 	2933500	 	 	15-Mar-2005
	 	United States of
America
	 	 	43	 	 	Aff of Use - 5 Yr (Open)
	 	15-Mar-2010
	 	Reliant Energy

Trademark Trust
	069382.0475HO

	 	RELIANT ARENA
	 	Registered
	 	 	76195453	 	 	17-Jan-2001
	 	 	2976601	 	 	26-Jul-2005
	 	United States of
America
	 	 	35	 	 	Aft of Use - 5 Yr (Open)
	 	26-Jul-2010
	 	Reliant Energy

Trademark Trust
	069382.0477HO

	 	RELIANT ARENA
	 	Registered
	 	 	76195451	 	 	17-Jan-2001
	 	 	2896040	 	 	19-Oct-2004
	 	United States of
America
	 	 	41	 	 	Aff of Use - 5 Yr (Open)
	 	19-Oct-2009
	 	Reliant Energy

Trademark Trust
	069382.0478HO

	 	RELIANT ARENA
	 	Registered
	 	 	76195450	 	 	17-Jan-2001
	 	 	2943295	 	 	26-Apr-2005
	 	United States of
America
	 	 	42	 	 	Aff of Use - 5 Yr(Open)
	 	26-Apr-2010
	 	Reliant Energy

Trademark Trust
	060582.0503HO

	 	RELIANT CENTER
	 	Registered
	 	 	76195564	 	 	17-Jan-2001
	 	 	2897602	 	 	26-Oct-2004
	 	United States of
America
	 	 	35	 	 	Aff of Use - 5 Yr (Open)
	 	26-Oct-2009
	 	Reliant Energy

Trademark Trust
	069382.0505HO

	 	RELIANT CENTER
	 	Registered
	 	 	76195562	 	 	17-Jan-2001
	 	 	2875207	 	 	17-Aug-2004
	 	United States of
America
	 	 	41	 	 	Aff of Use - 5 Yr (Open)
	 	17-Aug-2009
	 	Reliant Energy

Trademark Trust
	069382.0509HO

	 	RELIANT STADIUM
	 	Registered
	 	 	76195558	 	 	17-Jan-2001
	 	 	2955241	 	 	24-May-2005
	 	United States of
America
	 	 	16	 	 	Aff of Use - 5 Yr (Open)
	 	24-May-2010
	 	Reliant Energy

Trademark Trust
	069382.0515HO

	 	RELIANT STADIUM
	 	Registered
	 	 	76195448	 	 	17-Jan-2001
	 	 	2929142	 	 	1-Mar-2005
	 	United Stales of
America
	 	 	28	 	 	Aff of Use - 5 Yr (Open)
	 	1-Mar-2010
	 	Reliant Energy

Trademark Trust
	069382.0517100

	 	RELIANT STADIUM
	 	Registered
	 	 	76195445	 	 	17-Jan-2001
	 	 	2929141	 	 	1-Mar-2005
	 	United Stales of
America
	 	 	35	 	 	Aff of Use - 5 Yr(Open)
	 	1-Mar-2010
	 	Reliant Energy

Trademark Trust
	069382.0519HO

	 	RELIANT STADIUM
	 	Registered
	 	 	76195443	 	 	17-Jan-2001
	 	 	2896039	 	 	19-Oct-2004
	 	United States of
America
	 	 	41	 	 	Aff of Use - 5 Yr
(Open)
	 	19-Oct-2009
	 	Reliant Energy

Trademark Trust
	069382.0540HO

	 	ENERGY COMMANDER
	 	Registered
	 	 	76263578	 	 	25-May-2001
	 	 	2764995	 	 	16-Sep-2003
	 	United States of
America
	 	 	9	 	 	Aff of Use - 5 Yr (Open)
	 	16-Sep-2008
	 	Reliant

Energy

Retail

Holdings,

LLC
	069382.0541HO

	 	ENERGY COMMANDER
	 	Registered
	 	 	76263577	 	 	25-May-2001
	 	 	2813513	 	 	10-Feb-2004
	 	United States of
America
	 	 	42	 	 	Aff of Use - 5 Yr(Open)
	 	10-Feb-2009
	 	Reliant

Energy

Retail

Holdings,

LLC

Schedule 1.01(e) to CSRA

 

 

     

	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 
	Case No	 	Trademark Name	 	Tmk Status	 	App. No,	 	FII Date	 	Reg. No.	 	Reg. Date	 	Country Name	 	Class	 	Action Due	 	Due Date	 	Owner
	069382.0547HO

	 	RELIANT STADIUM
	 	Registered
	 	 	75981391	 	 	17-Jan-2001
	 	 	2729638	 	 	24-Jun-2003
	 	United States of
America
	 	 	42	 	 	Aff of Use - 5 Yr (Open)
	 	24-Jun-2008
	 	Reliant Energy

Trademark Trust
	069382.0553HO

	 	YOUR HOUSTON

BUSINESS
	 	Registered
	 	 	78156502	 	 	21-Aug-2002
	 	 	2865827	 	 	20-Jul-2004
	 	United States of
America
	 	 	16, 41	 	 	Aff of Use - 5 Yr (Open)
	 	20-Jul-2009
	 	Reliant

Energy

Retail

Holdings,

LLC
	069382.0764HO

	 	RELIANT CENTER
	 	Registered
	 	 	75981963	 	 	17-Jan-2001
	 	 	2926480	 	 	15-Feb-2005
	 	United States of
America
	 	 	42	 	 	Aff of Use - 5 Yr (Open)
	 	15-Feb-2010
	 	Reliant Energy

Trademark Trust
	069382.0767HO

	 	RELIANT ENERGY
	 	Registered
	 	 	78451768	 	 	16-Jul-2004
	 	 	3053512	 	 	31-Jan-2006
	 	United States of
America
	 	 	35	 	 	Aff of Use - 5 Yr (Open)
	 	31-Jan-2011
	 	Reliant Energy

Trademark Trust
	069302.0768HO

	 	RELIANT ENERGY
	 	Registered
	 	 	78451803	 	 	16-Jul-2004
	 	 	3053513	 	 	31-Jan-2006
	 	United States of
America
	 	 	39	 	 	Aff of Use - 5 Yr (Open)
	 	31 -Jan-2011
	 	Reliant Energy

Trademark Trust
	069382.0769HO

	 	RELIANT ENERGY
	 	Registered
	 	 	78451815	 	 	16-Jul-04
	 	 	3045140	 	 	17-Jan-06
	 	United States of
America
	 	 	40	 	 	Aff of Use - 5 Yr(Open)
	 	17-Jan-2011
	 	Reliant Energy

Trademark Trust
	069382.0807HO

	 	RELIANT
	 	Registered
	 	 	78622356	 	 	4-May-2005
	 	 	3097811	 	 	30-May-2006
	 	United States of
America
	 	 	36	 	 	Aff of Use - 5 Yr (Open)
	 	30-May-2012
	 	Reliant Energy

Trademark Trust
	069382.0808HO

	 	RELIANT ENERGY
	 	Registered
	 	 	78622380	 	 	4-May-2005
	 	 	3132302	 	 	22-Aug-2006
	 	United States of
America
	 	 	36	 	 	Aff of Use - 5 Yr (Open)
	 	22-Aug-2011
	 	Reliant Energy

Trademark Trust
	069382.0817HO

	 	POWERZONE
	 	Registered
	 	 	78762804	 	 	29-Nov-2005
	 	 	3243942	 	 	22-May-2007
	 	United States of
America
	 	 	35, 41	 	 	Aff of Use - 5 Yr (Open)
	 	22-May-2012
	 	Reliant

Energy

Retail

Holdings,

LLC
	069382.0829HO

	 	RELIANT POWERTRACKER
	 	Registered
	 	 	77071862	 	 	27-Dec-2006
	 	 	3528114	 	 	4-Nov-2008
	 	United States of
America
	 	 	39	 	 	Aff of Use - 5 Yr (Open)
	 	4-Nov-2013
	 	Reliant

Energy

Retail

Services,

LLC

Schedule 1.01(e) to CSRA

 

 

Schedule 1.01(g) 
To Amended and Restated Credit Sleeve and Reimbursement Agreement

Investments

1. Reliant Energy Retail Holdings, LLC holds a 50% interest in the IT Trust.

2. Reliant Energy Retail Holdings, LLC owns 100% of the membership interests in Reliant Energy
Solutions East, LLC (“RESE”). Pursuant to Section 7.19 of the Purchase and Sale Agreement, no
Reliant Retail Obligor will own any membership interest in RESE on the Third A&R Date.

Schedule 1.01(g) to CSRA

 

 

Schedule 1.01(h) 
To Amended and Restated Credit Sleeve and Reimbursement Agreement

Liens

None.

 Schedule 1.01(h) to CSRA

 

 

     

Schedule 1.01 (i) to Amended and Restated Credit Sleeve Reimbursement Agreement

CSRA Post- Close Guidelines for Existing C&I Events

	 	 	 	 	 	 	 	 	 
	Change	 	Frequency	 	Description	 	Designation	 	Justification/Ramification
	HR, Gas, or Power Block 

Triggers

	 	High
	 	Existing customer contract allows for option to lock down HR, gas or enrgy blocks.
	 	IRF
	 	Part of existing contractual obligation. For those
customers who negotiated this right out of their
contracts for a lower adder, adding the right back in
will be viewed as a restructure.
	Transitions

	 	High
	 	Customer’s term ends however he/she has not

1 — Extended current contract;

2-Gone to other REP.

Therefore, retail puts them on MCPE + Adder product.

* This applies for customers who’s underlying contract is IRF. Once master base
moves ORF, the transition will be handled ORF.
	 	IRF
	 	Contract has effectively expired but retail is still
serving load in compliance with the terms of the original
contract.
	Assignments

	 	High
	 	An assignment can be a partial of full assignment and occurs when a new 3rd party
assumes the electricity contract of our customer, under the same term, price, etc
as the original C&I customer.
	 	IRF
	 	Contract terms have not changed just customer
	LaaR/EILS

	 	Low
	 	Incremental offering for exisiting customer. Customer receives credit if ERCOT
exercises right to interrupt. The term and price of contract do not change with
execution of amendment.
	 	IRF
	 	Terms and price of contract remain same. Load not
impacted. A customer may sign up for LAAR or EILS after
the retail contract is signed, which causes a contract
amendment, but nothing would change in terms of the
retail contract in regards to price or term.
	Supplemental

	 	Low
	 	Occasionally customers will call and tell us that they are going to have a
temporary increase in their load, This is usually in conjunction with customer
with cogen. Similar to an added site the load will increase, but the period is
short-term.
	 	IRF
	 	Current contractual right. Price will change for
incremental supply to cover for changes in supply costs.
	3rd Party Supply

	 	Low
	 	The customer will call the CTD and tell us they are bringing a certain amount of
supply, in which case we just serve as the QSE.
	 	IRF
	 	If current contractual right to bring 3rd party supply
exists then load remains in the ring fence.
	Immaterial Adds & Deletes

	 	High
	 	Customer calls and adds a meter under 5000 mwhrs. Example: school district adds a
trailer to the contract.
	 	IRF
	 	1) Historically been viewed as maintenance of existing
contracts.
2) High frequency of add/delete make it impractical to
renegotiate each contract to add/remove the sites from the
ring.
3) The load is insignificant.
4) Keeping immaterial new meters for existing customers
with the same legal entity (inside the ring) will be the
smoothest process from a customer’s point of view.
	POLR Drops

	 	Low
	 	A C&I customers REPS goes out of business and they are returned to RERS as POLR.
This will be additional C&I load.
	 	IRF
	 	Ercot will give the POLR load to RERS. RRI has no control
over who and what load is given to us via Ercot POLR
process.
	Prepay with No Price 

Change

	 	Low
	 	Customer is required to move to prepay due to credit quality.
	 	IRF
	 	If a customer is moved to prepay with no price change the
load will remain IRF.
	Prepay with Price Change

	 	Low
	 	Customer is on a contract and is prepaying for their usage, which may result in a
commodity price discount. Customer wants to move off of prepay, resulting in a
price change. Or the reverse situation, customer is on standard payment terms but
wants to move on to prepay to take advantage of the commodity price discount.
	 	ORF
	 	If a price change is involved with a prepay the load will
be moved ORF.
	Add Meters for Exisiting 

Customer on New Product

	 	Low
	 	Customer calls to add meters on a different product than the underlying contract
product exhibit for an immaterial meter(s) of no more than 5000 mwhs in
aggregate.
	 	IRF
	 	Assuming load is immaterial the new meters will be added
just like an immaterial add. If load is deemed material
then the new meters will be added under a new Master Base
ORF.
	Material Adds & Deletes

	 	Low
	 	Customer calls and adds a meter above 5000 mwhrs. Example: school district adds a
trailer to the contract.
	 	ORF*
	 	Very infrequent activity. In 2008 there were a total of 5
material adds. Each instance requires it’s own analysis
to determine % of underlying load and financial impact to
customer.
	Renewals & Extensions

	 	High
	 	Renew existing contract for longer term.
	 	ORF
	 	Original term load will remain in the ring. The load will
move out of the ring fence with the beginning of the
renewal period.
	Restructure — Blend &
Extend

	 	Medium
	 	Change customer’s price during exisiting term, in return for customer extending
the term of their contract.
	 	ORF*
	 	Changes the current obligations and thus requires the
load to come out of the ring fence.
	Restructure — Product switch

	 	Medium
	 	Customer changes product from original product exhibit (usually MCPE moving to
fixed price).
	 	ORF*
	 	Changes the current obligations and thus requires the
load to come out of the ring fence.

 

			
	*	 	When Existing load moves ORF, a portfolio of Supply equivalent to the original term load will be
sold from the RERS supply book to the RETR supply book at the original hedge prices.
	 
	 	 	IRF = Inside Ring Fence
	 
	 	 	ORF = Outside Ring Fence = Prohibited New C&I

 

 

Schedule 2.02(a) 
To Amended and Restated Credit Sleeve and Reimbursement Agreement

Counterparty Document Negotiation Provisions

Counterparty Document Modification Provisions

     ISDA Sections

a. Tax forms and delivery date of forms (assuming they do not go to any Merrill Party)

b. Addresses for Notices (other than Merrill Parties)

c. Definitions of offices, “Multibranch Party”.

 Schedule 2.02(a) to CSRA

 

 

Schedule 2.04

To Amended and Restated Credit Sleeve and Reimbursement Agreement

C&I Contracts and Governmental Contracts receiving ML Guarantee

Counterparty Name

Apache Corporation

Association Power, LLC

Big Lots Stores, Inc.

Citgo Petroleum Corporation

City of Houston

ConocoPhillips Company

Explorer Pipeline Company

Huntsman Polymers Corporation

Kinder Morgan Inc.

Kinder Morgan Operating L.P.

La Quinta Inns, Inc.

O’Reilly Automotive, Inc.

Petsmart, Inc.

Praxair, Inc.

Public Utility Commission of the State of Texas (“PUCT”)

Sprint United Management Company

Texas CUC Aggregation Project, Inc. dba Public Power Pool

Texas Rangers Baseball Partners

Texas General Land Office

University Of Texas System

U.S. General Services Administration

Valero Energy Corporation

Valero Logistics

Schedule 2.04 to CSRA

 

 

Schedule 3.06(a)

To Amended and Restated Credit Sleeve and Reimbursement Agreement

Merrill Account

JP Morgan Chase

ABA 021000021

Account Number [***]

 

			
	***	 	Certain information on this page has been omitted and filed separately with the
Securities and Exchange Commission. Confidential treatment has been requested with
respect to the omitted portions.

 

 

Schedule 5.06

To Amended and Restated Credit Sleeve and Reimbursement Agreement

Litigation

	I.	 	PENDING LITIGATION

	 	a.	 	Office of the Public Utility Counsel vs. Public Utility Commission of Texas,
Reliant Resources, Inc. and Reliant Energy Retail Services, L.L.C.; Cause No. GN301279;
In the District Court of Travis County, Texas, 345th Judicial District.
	 
	 	b.	 	Gulf Coast Coalition of Cities vs. Public Utilities Commission of Texas and
Reliant Energy Services; Cause No. GN2-03756 [4-5 Fuel Factor Case]; 345th Judicial
District Court; Travis County, Texas.
	 
	 	c.	 	The State of Texas vs. Public Utility Commission of Texas; Reliant Energy
Retail Services, L.L.C.; Case No. GV303876; 345th Judicial District Court; Travis
County, Texas.
	 
	 	d.	 	Homestead Commercial Group, LLC v. Reliant Energy Retail Services, LLC, Arched
Bridge Co. Inc., et al.; Cause No: 2007-65389; 281st Judicial District, Harris County,
Texas.
	 
	 	e.	 	In re: Movie Gallery/Hollywood Video Bankruptcy.
	 
	 	f.	 	534 Las Americas/Hispanic Housing (Bankruptcy); Case No. 07-33778; US
Bankruptcy Court, Southern District of Texas, Houston Division.
	 
	 	g.	 	In re: Arctic Cold Storage (Bankruptcy); Case No. 07-60254; US Bankruptcy
Court, Eastern District of Texas, Tyler Division.
	 
	 	h.	 	In re: Bombay Company, Inc. (Bankruptcy); Case
No. 07-44084-rfn-11;
 US Bankruptcy Court, Northern District of Texas, Ft. Worth Division.
	 
	 	i.	 	Houston Council for Health and Education vs. Public Utility
Commission of Texas, CenterPoint Energy, Houston Electric, LLC, Reliant Energy
Retail Services, LLC and Texas Genco, LP; Cause No. GN500160; 3rd Court of
Appeals, Travis County, Texas.
	 
	 	j.	 	Sharon Taylor, et al. vs. Freeman Publishers, Inc., et al. (Reliant
Energy, Inc. a/k/a Reliant Resources); Cause No. 02-07-cv-410; USDC, Western
District of Louisiana.
	 
	 	k.	 	In re: Miracle Candle; Cause No. 07-50227; United States District
Court, Southern District of Texas, Laredo Division.
	 
	 	l.	 	Ray Madrigal v. Reliant Energy, Inc. and AEP Energy Services, Inc.;
Cause No. 08-60392- 1; In the County Court at Law No. 1, Nueces County, Texas.

Schedule 5.06 to CSRA

-1-

 

	 	m.	 	Jan Andel, Diana Clarkson, a/n/f of Anthony Douglas Andel, A Minor, Wanda
Andel and Bruno Andel vs. Atlantic Service & Supply, LLC, et al.; Cause No.
2008-17202; In the 164th Judicial District Court, Harris County, Texas.
	 
	 	n.	 	Constellation Energy Commodities Group, Inc. vs. Public Utility Commission of
Texas; Cause No. D-1-GN-08-001213; in the 98th Judicial District Court, Travis County,
Texas.
	 
	 	o.	 	Timothy Gyftakos vs. Reliant Energy, Incorporated; Cause No. 928308; in the
County Civil Court at Law #3, Harris County, Texas.
	 
	 	p.	 	Merrill Lynch Commodities, Inc. et ano. vs. Reliant Energy Power
Supply, LLC et al.; Index No. 603820/2008; Supreme Court, New York County.
	 
	 	q.	 	IP CO., LLC d/b/a INTUS IQ vs. Reliant Energy, Inc., et al.;
C.A. No. 2: 090cv037; in the United States District Court for the Eastern District of Texas,
Marshall Division.
	 
	 	r.	 	Andrea L. Walker vs. Reliant Energy; Charge No. 450-2009-01794; United
States Equal Employment Opportunity Commission, Dallas District office.
	 
	 	s.	 	In re: Calpine Corporation et al., debtors, Ch 11 Case 05-6022; Calpine
Energy Services, L.P. vs. Reliant Energy Electric Solutions, LLC, Adversary Proceeding
No.08-1-01251; in the United States Bankruptcy Court for the Southern District of New
York.

	II.	 	THREATENED LITIGATION

	 	a.	 	Letter dated December 8, 2008 to Reliant Energy Retail Services, LLC from
Bennett, Weston & LaJone, P.C.
	 
	 	b.	 	Letter dated January 2, 2009 to Reliant Energy Retail Services, LLC from
Cokinos, Bosien & Young
	 
	 	c.	 	Letter dated January 22, 2009 to Reliant from K&L Gates

	III.	 	JUDGMENTS

	 	 	 	None.

Schedule 5.06 to CSRA

-2-

 

Schedule 5.13

To Amended and Restated Credit Sleeve and Reimbursement Agreement

List of Subsidiaries

Equity investment

	 	1.	 	RERH Holdings, LLC’s ownership of 1,000 units of the membership interest of Reliant
Energy Retail Holdings, LLC
	 
	 	2.	 	Reliant Energy Retail Holdings, LLC’s ownership of

	 	a.	 	1,000 units of the membership interest of Reliant Energy Retail Services, LLC
	 
	 	b.	 	1,000 units of the membership interest of Reliant Energy Power Supply, LLC

	 	3.	 	Reliant Energy Retail Services, LLC’s ownership of 1,000 units of the membership
interest of RE Retail Receivables, LLC
	 
	 	4.	 	Reliant Energy Retail Holdings, LLC’s holding of

	 	a.	 	100% of the beneficial interest of NRG Retail IT Trust

	 	 	 	 	 
	 	 	Jurisdiction of	 	Organizational/Taxpayer
	 	 	Organization	 	Identification Number
	RERH Holdings, LLC

	 	Delaware
	 	4191623/20-5222227
	Reliant Energy Retail Holdings, LLC

	 	Delaware
	 	3279845/76-0655580
	Reliant Energy Retail Services, LLC

	 	Delaware
	 	3279840/76-0655567
	RE Retail Receivables, LLC

	 	Delaware
	 	3531400/41-2046596
	Reliant Energy Power Supply, LLC

	 	Delaware
	 	4142914/20-4823108
	NRG Retail IT Trust

	 	Delaware	 	 

Address of the principal place of business for all of the above:

1000 Main Street

Houston, Texas 77002

Schedule 5.13 to CSRA

 

 

Schedule 5.16

To Amended and Restated Credit Sleeve and Reimbursement Agreement

Compliance with Laws

	1.	 	Potential violation of P.U.C. Subst R. 25.107 (i)(5) regarding sufficiency of notice of
mergers of Reliant Energy Solutions, LLC and StarEn Power, LLC into Reliant Energy Retail
Services, LLC in 2005.
	 
	2.	 	During the period from February 4 to February 6, 2009 disconnect orders were issued to the
TDU for 153 customers without first providing the disconnect notices required by P.U.C. Subst.
R. 25.483(c), (k) and (l). 137 of those customers were disconnected. Reconnect orders were
issued to the TDU for all 153 customers by February 13, 2009. During the period of February 2,
2008 to November 4, 2008 disconnect orders were issued to the TDU for 54 customers without
first providing the disconnect notices required by P.U.C. Subst. R.
25.483(c), (k) and (l). 11
of those customers were never reconnected.

Schedule 5.16 to CSRA

 

 

Schedule 7.14

To Amended and Restated Credit Sleeve and Reimbursement Agreement

List of Retail Services

	1.	 	Services sold to RERS’s customers pursuant to that certain agreement entered into effective
July 28, 2006 by and between RERS and Cross Country Home Services, Inc., a corporation duly
organized and existing under the laws of the State of Delaware (“Cross Country”), pursuant to
which RERS will make available to its customers in the state of Texas one or more of the
various home service plans offered by Cross Country.
	 
	2.	 	Services sold to customers of the Reliant Retail Obligors in connection with Energy
Commander, Reliant’s internet-based information and analysis portal that provides customer
specific tools, information, services, and products.
	 
	3.	 	RERS leases certain components and equipment involving the high-voltage substation at General
Motor’s Arlington, Texas assembly plant through October 31, 2010. The lease provides that RERS, through third party contractors, perform certain
maintenance and repair services pursuant to a cost plus arrangement contained in the lease.
RERS has a separate service agreement with a maintenance service provider, Eaton
Electrical, Inc., that provides periodic maintenance services on behalf of RERS.
	 
	4.	 	A project undertaken for Valeron Strength Films involved the installation and ongoing
recommended manufacturer’s (Mitsubishi) maintenance of an automatic fast bus transfer device
(switch) that identifies electrical disturbance conditions on incoming utility lines and can
transfer up to 6 MVA of load from the primary circuit to the secondary circuit within one-half
of one electrical cycle. RERS’s remaining obligation, which will terminate in November 2009,
is to provide annual periodic maintenance through a contract it has with Mitsubishi Electric
Power Products, Inc.
	 
	5.	 	On August 4, 1997, ARKLA and the United States of America/Department of the Army at Ft. Sill
entered into an Agreement For Energy Conservation and Demand Side Management Service, which,
through a subsequent delivery order (DABT 39-97-C-4046), dated September 24, 1997, required
ARKLA to provide labor, supplies and equipment to retrofit lighting fixtures at Ft. Sill’s
barracks, for a contract price of $615,279.70. The Army was to pay for the cost of the project
over a ten-year period from final acceptance. Thereafter, due to the acquisition and
consolidation of activities, Reliant Energy Solutions, LLC (later merged into RERS) expanded
the project to include de-centralizing and upgrading the barracks’ heating system to include
automatically controlled, high efficiency, modular gas fired, pulse type combustion boilers
for domestic hot water and space heating at each of the five barracks, together with
installing variable frequency drives and additional lighting upgrades. The final project sales
price, after

Schedule 7.14 to CSRA

 

 

	 	 	incorporating the then-remaining balance of the ARKLA lighting project, mentioned above,
was $5,168,533, which was funded at 7.75% interest per annum over a 10-year period.
	 
	 	 	After completion of the project, RERS negotiated third party financing (“Program
Agreement”) with Potomac Federal (subsequently acquired by GE Capital). Under the Program
Agreement terms, GE Capital provided third party non-recourse financing of the Ft. Sill
project, with RERS receiving (up-front) full payment from GE Capital for the sales price of
the project. The current outstanding amount owing on the principal is $124,053.69.
	 
	 	 	Under the terms of the Agreement, RERS is to bill, for 120 consecutive months, the monthly
amortization costs ($62,027.89) in conjunction with monthly natural gas bills rendered by
ARKLA to Ft. Sill. Following the spinoff of REI in 2002, administrative agency agreements
were entered into between RERS and CenterPoint Energy-ARKLA, and between RERS and
CenterPoint Energy-Entex, whereby the two natural gas distribution companies continue to
bill and collect as an agent for RERS. In the case of ARKLA, Ft. Sill is billed; whereas,
in the case of Entex, the Naval Construction Battalion Center is billed as discussed below.
In addition to the financing arrangement, RERS’s continuing service to Ft. Sill is limited
to prescribed annual preventative maintenance services, which RERS provides through
third-party local contractors. All of RERS’ obligations to Ft. Sill will terminate in June
11, 2009.
	 
	6.	 	On March 5, 1997, ENTEX appointed NorAM Energy Management as its agent for performing energy
conservation projects at federal facilities served by ENTEX. Subsequently, on July 9, 1997,
ENTEX entered into that certain Basic Ordering Agreement between the United States of America
and ENTEX, a Division of NorAm Energy Corporation, at Defense Facilities within its Service
Area (the “Basic Ordering Agreement”) to implement energy conservation projects.
	 
	 	 	Thereafter, on August 27, 1998, the United States of America, Department of the Navy,
Naval Construction Battalion Center (“NCBC”), issued contract purchase order number
N62467-97-G-1813 and Delivery Orders G0001 and G0002 (the “Delivery Orders”), to ENTEX for
the installation of a fuel cell in the Colmer Galley (the “Project”). On September 9,
1998, ENTEX appointed HL&P Energy Services Company (now RERS) as its agent for performing
energy conservation projects at federal facilities served by ENTEX. Pursuant to the
Delivery Orders, the monthly amortization of energy conservation project costs appear as
separate line items on monthly natural gas utility bills rendered for services supplied by
ENTEX to NCBC, and ENTEX collects on behalf of RERS, each month, payment for the Project.
There are two separate Delivery Orders, involving 120 monthly installments.

Schedule 7.14 to CSRA

 

 

	 	 	RERS’s remaining obligation involves the administration of invoicing, through an
Administrative Agency Agreement it has with CenterPoint Energy – Entex, of NCBC through
March 2010.
	 
	7.	 	Services such as walk-through audits, providing energy tips, and on-line energy audits.
	 
	8.	 	All-utility connection service (ie, together with electricity, water, gas, phone,
internet) provided to retail electric customers through All Connect.

Schedule 7.14 to CSRA

 

 

Schedule 12.13

To Amended and Restated Credit Sleeve and Reimbursement Agreement

List of Calculation Agents

Accenture LTD

Contact: Marina Kotovich

Phone: 312-693-8016 or 713-837-1500 or 1-877-889-9009 
Address:
2929 Allen Parkway, Suite 2000; Houston, TX 77019 
Web:
www.accenture.com

Ernst & Young, LLP

Contact: Marcela Donadio

Phone: 713-750-1276 or 713-750-1500

Address: 5 Houston Center, Suite 1200; 1401 McKinney St.; Houston, TX 77010

Web: www.ey.com/global/content.nsf/US/Home

PricewaterhouseCoopers, LLP

Contact: Mark Allen Smith

Phone: 713-356-4233 or 713-356-4000

Address: 1201 Louisiana, Suite 2900; Houston, TX 77002-5678

Web: www.pwc.com

Sirius Solutions, LLP

Contact: Brent Price

Phone: 713-888-7116 or 713-888-0488 or 1-800-234-8054

Address: 3700 Buffalo Speedway, 11th Floor; Houston, TX 77098

Web: www.sirsol.com

Schedule 12.13 to CSRA

 

 

Schedule 12.17

To Amended and Restated Credit Sleeve and Reimbursement Agreement

List of Offsetting Trades

[***]

 

			
	***	 	The content of this Schedule 12.17 (consisting of 2 pages) has been omitted and filed
separately with the Securities and Exchange Commission. Confidential treatment has been
requested with respect to the omitted portions.

 

 

Exhibit A1

GUARANTEE OF MERRILL LYNCH & CO., INC.

     WHEREAS, Reliant Energy Power Supply, LLC, a Delaware limited liability company (“REPS”), and
certain of its affiliates have entered into an agreement with Merrill Lynch Commodities, Inc., a
corporation duly organized and existing under the laws of the State of Delaware (“MLCI”), and its
parent, Merrill Lynch & Co., Inc., a corporation duly organized and existing under the laws of the
State of Delaware (“ML & CO.”), related to an enhanced credit structure for the retail electric
business of REPS and its affiliates;

     WHEREAS, as part of the consideration for the above described agreement, ML & Co. has agreed
to issue this Guarantee, guarantying the obligations of REPS under the Agreement described below,
consistent with the terms and conditions set forth below.

     FOR VALUE RECEIVED, receipt of which is hereby acknowledged, ML & CO. hereby unconditionally
guarantees to
[                                         ] (the “Company”), the due and punctual payment of any and all amounts payable by REPS, its
successors and permitted assigns, to the extent such successors or permitted assigns are direct or
indirect subsidiaries of RERH Holdings, LLC, a Delaware limited liability company, under the terms
of the [EEI/ISDA] Master Agreement
between the Company and REPS, dated as of [                     ], 2006 (the “Agreement”), including, in case of
default, interest
on any amount due, when and as the same shall become due and payable, whether on the scheduled
payment dates, at maturity, upon declaration of termination or otherwise, according to the terms
thereof. In case of the failure of REPS punctually to make any such payment, ML & Co. hereby
agrees to make such payment, or cause such payment to be made, promptly upon demand made by the
Company to ML & Co.; provided, however that delay by the Company in giving such demand shall in no
event affect ML & Co.’s obligations under this Guarantee. This Guarantee shall remain in full
force and effect or shall be reinstated (as the case may be) if at any time any payment guaranteed
hereunder, in whole or in part, is rescinded or must otherwise be returned by the Company upon the
insolvency, bankruptcy or reorganization of REPS or otherwise, all as though such payment had not
been made.

     ML & Co. hereby agrees that its obligations hereunder shall be unconditional, irrespective of
the validity, regularity or enforceability of the Agreement; the absence of any action to enforce
the same; any waiver or consent by the Company concerning any provisions thereof; the rendering of
any judgment against REPS or any action to enforce the same; or any other circumstances that might
otherwise constitute a legal or equitable discharge of a guarantor or a defense of a guarantor. ML
& Co. covenants that this guarantee will not be discharged except by complete payment of the
amounts payable under the Agreement. This Guarantee shall continue to be effective if REPS merges
or consolidates with or into another entity, loses its separate legal identity or ceases to exist.

     ML & Co. hereby waives diligence; presentment; protest; notice of protest, acceleration, and
dishonor; filing of claims with a court in the event of insolvency or bankruptcy of REPS; all
demands whatsoever, except as noted in the first paragraph hereof; and any right to require a
proceeding first against REPS.

     ML & Co. hereby certifies and warrants that this Guarantee constitutes the valid obligation
of ML & Co. and complies with all applicable laws. This Guarantee guarantees only payment
obligations of REPS and does not guarantee the performance of any other obligations of, including,
but not limited to, physical delivery or, to the extent applicable, reporting obligations of REPS.
This Guarantee constitutes a guarantee of payment and not of collection.

     This Guarantee shall be governed by, and construed in accordance with, the law of the State of
New York.

 

 

Exhibit A1

     This Guarantee may be terminated at any time by notice by ML & Co. to the Company given in
accordance with the notice provisions of the Agreement, effective upon receipt of such notice by
the Company or such later date as may be specified in such notice; provided, however, that this
Guarantee shall continue in full force and effect, and shall be irrevocable, with respect to any
payment obligation of REPS arising under any Transaction under and as defined in the Agreement
entered into prior to the effectiveness of such notice of termination.

     This Guarantee becomes effective upon written notice to such effect from ML & Co., or MLCI on
its behalf, to the Company given in accordance with the notice provisions of the Agreement making
specific reference to this Guarantee and the Agreement.

     IN WITNESS WHEREOF, ML & Co. has caused this Guarantee to be executed in its corporate name by
its duly authorized representative.

	 	 	 	 	 	 	 
	 

	 	 	 	 	 	 
	 	 	MERRILL LYNCH & CO., INC.	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 
	 	 	 	 	 	 
	 

	 	Name:	 	 	 	 
	 

	 	 	 	 	 	 
	 
	 	 	 	 	 	 
	 

	 	Title:	 	 	 	 
	 

	 	 	 	 	 	 
	 
	 	 	 	 	 	 
	 

	 	Date:	 	 	 	 
	 

	 	 	 	 	 	 

 

 

Exhibit A2

GUARANTEE OF MERRILL LYNCH & CO., INC.

     WHEREAS, Reliant Energy Retail Services, LLC, a Delaware limited liability company (“RERS”),
and certain of its affiliates have entered into an agreement with Merrill Lynch Commodities, Inc.,
a corporation duly organized and existing under the laws of the State of Delaware (“MLCI”), and
its parent, Merrill Lynch & Co., Inc., a corporation duly organized and existing under the laws of
the State of Delaware (“ML & CO.”), related to an enhanced credit structure for the retail
electric business of RERS and its affiliates;

     WHEREAS, as part of the consideration for the above described agreement, ML & Co. has agreed
to issue this Guarantee, guarantying the obligations of RERS under the Agreement described below,
consistent with the terms and conditions set forth below.

     FOR VALUE RECEIVED, receipt of which is hereby acknowledged, ML & CO. hereby unconditionally
guarantees to
[                                         ] (the “Company”), the due and punctual payment of any and all amounts payable by RERS, its
successors and permitted assigns, to the extent such successors or permitted assigns are direct or
indirect subsidiaries of RERH Holdings, LLC, a Delaware limited liability company, under the terms
of the [Contract] between the Company and
RERS, dated as of [                     ], 2006 (the “Agreement”), including, in case of default, interest on any
amount due, when
and as the same shall become due and payable, whether on the scheduled payment dates, at maturity,
upon declaration of termination or otherwise, according to the terms thereof. In case of the
failure of RERS punctually to make any such payment, ML & Co. hereby agrees to make such payment,
or cause such payment to be made, promptly upon demand made by the Company to ML & Co.; provided,
however that delay by the Company in giving such demand shall in no event affect ML & Co.’s
obligations under this Guarantee. This Guarantee shall remain in full force and effect or shall be
reinstated (as the case may be) if at any time any payment guaranteed hereunder, in whole or in
part, is rescinded or must otherwise be returned by the Company upon the insolvency, bankruptcy or
reorganization of RERS or otherwise, all as though such payment had not been made.

     ML & Co. hereby agrees that its obligations hereunder shall be unconditional, irrespective of
the validity, regularity or enforceability of the Agreement; the absence of any action to enforce
the same; any waiver or consent by the Company concerning any provisions thereof; the rendering of
any judgment against RERS or any action to enforce the same; or any other circumstances that might
otherwise constitute a legal or equitable discharge of a guarantor or a defense of a guarantor. ML
& Co. covenants that this guarantee will not be discharged except by complete payment of the
amounts payable under the Agreement. This Guarantee shall continue to be effective if REPS merges
or consolidates with or into another entity, loses its separate legal identity or ceases to exist.

     ML & Co. hereby waives diligence; presentment; protest; notice of protest, acceleration, and
dishonor; filing of claims with a court in the event of insolvency or bankruptcy of RERS; all
demands whatsoever, except as noted in the first paragraph hereof; and any right to require a
proceeding first against RERS.

     ML & Co. hereby certifies and warrants that this Guarantee constitutes the valid obligation
of ML & Co. and complies with all applicable laws. This Guarantee guarantees only payment
obligations of RERS and does not guarantee the performance of any other obligations of, including,
but not limited to, physical delivery or, to the extent applicable, reporting obligations of RERS.
This Guarantee constitutes a guarantee of payment and not of collection.

     This Guarantee shall be governed by, and construed in accordance with, the law of the State of
New York.

 

 

Exhibit A2

     This Guarantee becomes effective upon written notice to such effect from ML & Co., or MLCI on
its behalf, to the Company (which notice may be given by e-mail) making specific reference to this
Guarantee and the Agreement.

     IN WITNESS WHEREOF, ML & Co. has caused this Guarantee to be executed in its corporate name by
its duly authorized representative.

	 	 	 	 	 	 	 
	 

	 	 	 	 	 	 
	 	 	MERRILL LYNCH & CO., INC.	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 
	 	 	 	 	 	 
	 

	 	Name:	 	 	 	 
	 

	 	 	 	 	 	 
	 
	 	 	 	 	 	 
	 

	 	Title:	 	 	 	 
	 

	 	 	 	 	 	 
	 
	 	 	 	 	 	 
	 

	 	Date:	 	 	 	 
	 

	 	 	 	 	 	 

 

 

Exhibit B

To Amended and Restated Credit Sleeve and Reimbursement Agreement

List of Accepted Counterparties

[***]

 

			
	***	 	The content of this Exhibit B (consisting of 2 pages) has been omitted and filed separately
with the Securities and Exchange Commission. Confidential treatment has been requested with
respect to the omitted portions.

 

 

Exhibits C1 through D2

To Amended and Restated Credit Sleeve and Reimbursement Agreement

[Intentionally Deleted.]

 

 

Exhibit E1

To Amended and Restated Credit Sleeve and Reimbursement Agreement

Reliant Energy — Retail Risk Policy

[***]

 

			
	***	 	The content of this Exhibit E1 (consisting of 2 pages) has been omitted and filed
separately with the Securities and Exchange Commission. Confidential treatment has been
requested with respect to the omitted portions.

 

 

Exhibit E2

To Amended and Restated Credit Sleeve and Reimbursement Agreement

[Intentionally Deleted.]

 

 

Exhibit F

To Amended and Restated Credit Sleeve and Reimbursement Agreement

[Intentionally Deleted.]

 

 

Exhibit G

To Amended and Restated Credit Sleeve and Reimbursement Agreement

Joinder Agreement

FORM OF JOINDER AGREEMENT

([Subsidiary])

     This JOINDER AGREEMENT dated as of [date] (this “Agreement”), is among the undersigned and
the other parties to each of the agreements listed on Schedule A attached hereto (each a
“Joined Agreement” and together the “Joined Agreements”). With respect to each Joined
Agreement, the undersigned hereby agrees with the parties thereto as follows:

     Effective as of the date hereof, the undersigned by its signature below hereby becomes a
party to each Joined Agreement in the capacity indicated on Schedule A attached hereto, in
each case in accordance with the applicable provisions of such Joined Agreement for parties
joining such Joined Agreement, if any, and, without limiting the joinder requirements of any
Joined Agreement, the undersigned hereby (a) assumes all the obligations under each Joined
Agreement applicable to the undersigned in the capacity in which it is joining thereunder, (b)
agrees to be bound by the provisions of each Joined Agreement applicable to the undersigned in the
capacity in which it is joining thereunder as if the undersigned had been an original party
thereto, and (c) confirms that, after joining each Joined Agreement as set forth above, the
representations and warranties set forth in each Joined Agreement applicable to the undersigned in
the capacity in which it is joining thereunder are true and correct in all material respects as of
the date hereof; provided however, that the undersigned shall have no liability for the
observance and performance of the terms, conditions, and obligations under any Joined Agreement
applicable to the undersigned in its capacity thereunder which accrue prior to the date hereof to
the extent the same is expressly set forth on Schedule A attached hereto with respect to such
Joined Agreement.

     To the extent required by the terms of each Joined Agreement, the joinder of the undersigned
to such Joined Agreement as provided herein is acknowledged and agreed below by the applicable
parties thereto. This Agreement shall be construed as a separate agreement with the parties to
each Joined Agreement, and no party to this Agreement that is not a party to such Joined Agreement
shall have any rights with respect to such Joined Agreement by virtue of this Agreement.

     This Agreement may be executed by one or more of the parties hereto on any number of separate
counterparts, and all of said counterparts taken together shall be deemed to constitute one and the
same instrument. As expressly supplemented hereby, each Joined Agreement shall remain in full force
and effect.

     THIS JOINDER AGREEMENT AND THE JOINED AGREEMENTS REPRESENT THE FINAL AGREEMENT AMONG THE
APPLICABLE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR
SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES.

     THERE ARE NO ORAL AGREEMENTS AMONG THE PARTIES TO ANY JOINED AGREEMENT.

Exhibit G to CSRA

 

 

     IN WITNESS WHEREOF this Joinder Agreement is executed and delivered as of the
                    day of      
               ,
                    ,

	 	 	 	 	 	 	 
	 	 	[SUBSIDIARY]	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	Name:
	 	 

	 	 
	 

	 	Title:
	 	 

	 	 
	 

	 	 	 	 

	 	 

Acknowledged and Agreed:

[                                        ]

	 	 	 	 	 
	By:
	 	 	 	 
	Name:

	 	 

	 	 
	Title:

	 	 

	 	 
	 

	 	 

	 	 

Signature Page to Joinder Agreement

Exhibit G to CSRA

 

 

Schedule A 

Joined Agreements

	 	 	 	 	 	 	 
	Counterparties	 	Agreement	 	Capacity Joined	 	Liability
	Merrill Lynch &
Co., Inc.
(“ML&Co”), a
Delaware
corporation, and
Merrill Lynch
Commodities, Inc.
(“MLCI”), a
Delaware
corporation.

	 	Amended and Restated Credit Sleeve and Reimbursement Agreement,
dated as of September 24, 2006, as amended and restated as of May 1, 2009 (the
“CSRA”), among Reliant Energy Power
Supply, LLC, and the Other Reliant Retail
Obligors listed on the signature pages
thereto, on one hand, and ML&Co and MLCI,
on the other hand, as the same may be
amended, supplemented, restated, renewed,
replaced, waived or otherwise modified
from time to time.
	 	Other Reliant Retail Obligor
	 	The undersigned
shall have no
liability for the
observance and
performance of the
terms, conditions,
and obligations
under applicable to
the undersigned in
its capacity under
the CSRA which
accrue prior to the
date hereof.
	 
	 	 	 	 	 	 
	Merrill Lynch
Capital
Corporation, a
Delaware
corporation
(“MLCC”).

	 	Second Amended and Restated Working Capital Facility Agreement, dated as of
September 24, 2006, as amended and restated as of May 1, 2009 (the “WCF”), among
MLCC, as Lender, Reliant Energy Retail Holdings, LLC,  as Borrower, and
the Other Reliant Retail Obligors, as
Guarantors, as the same may be amended,
supplemented, restated, renewed, replaced,
waived or otherwise modified from time to
time.
	 	Additional Guarantor
	 	The undersigned
shall have no
liability for the
observance and
performance of the
terms, conditions,
and obligations
under applicable to
the undersigned in
its capacity under
the WCF which
accrue prior to the
date hereof.
	 
	 	 	 	 	 	 
	NRG Energy, Inc., a
Delaware
corporation
(“NRG”),

	 	Master Services Agreement dated as of May 1, 2009 (the “MSA”), among NRG
and the Retail Companies listed on the
signature pages thereto, as the same may be
amended, supplemented, restated, renewed,
replaced, waived or otherwise modified
from time to time.
	 	Retail Company
	 	The undersigned
shall have no
liability for the
observance and
performance of the
terms, conditions,
and obligations
under applicable to
the undersigned in
its capacity under
the MSA which
accrue prior to the
date hereof.

Exhibit G to CSRA

 

 

Exhibit H

To Amended and Restated Credit Sleeve and Reimbursement Agreement

Form of Compliance Certificate

FORM OF COMPLIANCE CERTIFICATE

To:      Merrill Lynch Commodities, Inc., a Delaware corporation, as Sleeve Provider

     This Compliance Certificate is furnished pursuant to that certain Amended and Restated Credit Sleeve and
Reimbursement Agreement, dated as of September 24, 2006, as amended and restated as of May 1, 2009 (as the same may be further
amended or otherwise modified from time to time, the “Agreement”), among Reliant Energy Power
Supply, LLC, a Delaware limited liability company (“REPS”), the Other Reliant Retail Obligors
specified therein (together with REPS, the “Reliant Retail Obligors”), Merrill Lynch Commodities
Inc., a Delaware corporation, as Sleeve Provider, and Merrill Lynch & Co., Inc., a Delaware
corporation (“ML&Co”, and together with the Sleeve Provider, the “Merrill Parties”). Capitalized
terms used herein but not otherwise defined shall have the meanings given to such terms in the
Agreement.

     THE UNDERSIGNED HEREBY CERTIFIES THAT:

     1. I
am the duly elected         of RERH Holdings, LLC.

     2. I have reviewed the terms of the Agreement and I have made, or have
caused to be made under my supervision, a detailed review of the transactions and
conditions of the Reliant Retail Obligors during the accounting period covered by the
attached financial statements.

     3. The examinations described in paragraph 2 did not disclose, and I have no
knowledge of, the existence of any condition or event constituting a Default with respect
to a Reliant Event of Default, as such term is defined under the Agreement.

     4. Exhibit A attached hereto includes certain financial statements required
under the terms of the Agreement, all of which financial statements are true, complete
and correct in all material respects.

     5. 

The following individual asset sales were consummated during the quarter ending
                    : The aggregate amount of all such individual asset sales since December 1, 2006, is $                    :

[insert description of asset sales]

 

 

The foregoing certifications, together with the financial statements attached as Exhibit A
hereto, are made and delivered this day of , 20 .

	 	 	 	 	 
	 	 	RERH Holdings, LLC
	 
	 	 	 	 
	 	 	 
	 

	 	Name:	 	 
	 

	 	 	 	 
	 

	 	Title:	 	 
	 

	 	 	 	 

 

 

EXHIBIT A TO COMPLIANCE CERTIFICATE

FINANCIAL STATEMENTS

Exhibit H to CSRA

 

 

Exhibit I1

to Amended and Restated Credit Sleeve Reimbursement Agreement

Sleeve Provider Employees with Access to Data

Senior Management:

David Goodman

Rob Jones

Dennis Albrecht

Origination/Structuring:

Don Ellithorpe

Tammy Nikoltcheva

Philip Carey

Mid-Office:

Vikki Karel

Chris Elliott

Valerie Thomas

Matt Miller

Grady Reed

Laney Sweatt

Market Risk:

Veronica Henley

Marcelo Meira

Yvette Owens

Fabian Rodriguez

Credit:

Orli Almog

Paula Smith

Karalyn Van Leggelo

Stephen Domroes

Ari Kagan

Blessing Mudavanhu

Stephan Dellosso

Lindsay Johnson

Vanessa Stabler

Exhibit I1 toCSRA

 

 

Information Technology:

Karim Ali

Scott Freeberg

Jason Ye

Reema Gupta

Robert Smart

Matt Slane

Burke Nail

Ed Calderon

Chune Zhang

James Coley

Back-Office:

Greg Whiting

Nicole White

Olga Herrera

Corey Dearing

Michelle Pringle

Melissa Valentino

Trade Documentation/Client Services:

Micole Newsome

Brenda Johnson

Jennifer Royer

Settlements:

Genaro Mendoza

Nicole Richard

Heather Jordan

Fawn Dees

Noe Garza

Compliance:

Deanna Newcomb

John Clowney

Legal:

Ron Oppenheimer

Shelly Abramson

Exhibit I1 toCSRA

 

 

Exhibit I2

to Amended and Restated Credit Sleeve Reimbursement Agreement

Reliant Employees with Access to Data

PART A

Please note that this schedule contains three different classifications: functional area access,
systems access and officer listings. There is overlap among and between these classifications.

Functional Area Access

Chief Risk Officer

Krishnan Kasiviswanathan

Retail Credit Risk

Arlene Spangler

Frank Marian

Chris Slaughter

Paul Feldman

Bryan Gelotti

Market Risk

Felix Lu

Bucky Gardner

Michael Naul

Robert Goerner

Manuel Ciobanu

Javier Li

Retail Structuring & Pricing

Chet Mercier

John Adams

Stephen Bouvier

Cara Canovas

David Rissmiller

Ben Yamat

Aibing Zhang

Risk Reporting & Risk Control

Brad Radimer

Allison Mundy

Kathleen Graper

Jonathan Osteen

Kathleen Ho

Exhibit I2 to CSRA

 

 

Matthew Condon

Amanda Lewis

Jasmine Shah

Non-execution Employees of Long-term Supply

Hemant Bajaj

Chad Bullard

Frank Bryan

Contract Administration

Ron Theriot

Ellen Dailey

Carol Grisby

Derivatives Accounting

Bharat Shah

Kellie Schoenecker

Scott Haney

Monica Matlock

Tuyen Nguyen (needs access until May 12 for April Close under TSA)

Stuart Smith

Misa Gondo (needs access until May 12 for April Close under TSA)

Penny Fetherston (needs access until May 12 for April Close under TSA)

Michelle Barnett (needs access until May 12 for April Close under TSA)

Nicole Pierce

Donna Henderson (needs access until May 12 for April Close under TSA)

Deena Mangan (needs access until May 12 for April Close under TSA)

Phelps McKee (needs access until May 12 for April Close under TSA)

Retail Accounting

Chuck Trygstad

Marketing Analytics & Forecasting

Eric Wang

Strategy & Market Analytics

Deena Morgan

Management & Performance Reporting

Lance Boyce

Ethics & Compliance

Courtney Hebert

IT (Personnel remaining with RRI, that will support CSRA IT work and have access to ML data in RRI
systems)

Exhibit I2 to CSRA

 

 

Robert Thibeault

Kim Hales

Tana Lam

Bob Singleton

Mike Reckles

Chris Lurix

Debbie Duniphin

Maria Fernandez

Sreehari Gorantla

Renuka Joopelli

Kevin Keller

Bill King

Meily Mejia

Kristopher Michalsky

Sandeep Paliwal

Prasad Pati

Marco Perez

Sridevi Ravi

Charles Wheatley

Tamie Dowies

Joe Haven

Scott Yeargain

Donna Benefield

Juan Sanchez

Jeff Pratt

Systems Access

ftp Site Access (Merrill data)

Market Risk

Felix Lu

Bucky Gardner

Manuel Ciobanu

Michael Naul

Database RTNP03 Access

Retail Credit Risk

Frank Marian

Arlene Spangler

Chris Slaughter

Market Risk

Felix Lu

Bucky Gardner

Michael Naul

Exhibit I2 to CSRA

 

 

Portfolio Valuation

Non-execution employees of Long-term Supply

Chad Bullard

Risk Reporting & Risk Control

Brad Radimer

Allison Mundy

Database KVARD01 Access

Market Risk

Felix Lu

Bucky Gardner

Manuel Ciobanu

Reliant Sleeve Directory Access

Market Risk

Felix Lu

Bucky Gardner

Manuel Cioanbu

Exhibit I2 to CSRA

 

 

Officers of:

NRG Energy, Inc.

	 	 	 
	Name	 	Title
	David Crane

	 	President and Chief Executive Officer
	Mauricio Gutierrez

	 	Executive Vice President, Commercial Operations
	John Ragan

	 	Executive Vice President & Chief Operating Officer
	Michael Liebelson

	 	Executive Vice President and Chief Development Officer, Low
Carbon Technologies
	Robert C. Flexon

	 	Executive Vice President and Chief Financial Officer
	J. Andrew Murphy

	 	Executive Vice President and Regional President,
Northeast Region
	Kevin T. Howell

	 	Executive Vice President and Regional President, Texas
	Jonathan Baliff

	 	Executive Vice President, Strategy
	Michael Bramnick

	 	Senior Vice President and General Counsel, Corporate
Compliance Officer
	Jan Paulin

	 	Senior Vice President and President and CEO of Padoma Wind
Power LLC
	Robert Martin Henry

	 	Senior Vice President, Business Operations
	Jeff Baudier

	 	Senior Vice President and President, South Central Region
	M. Stephen Hoffman

	 	Senior Vice President and President, Western Region
	Christopher Sotos

	 	Vice President and Treasurer
	James John Ingoldsby

	 	Vice President, Chief Accounting Officer
	Raymond Salort

	 	Vice President, Tax
	Denise Wilson

	 	Chief Administrative Officer
	Krishnan Kasiviswanathan

	 	Chief Risk Officer
	Tanuja M. Dehne

	 	Corporate Secretary

RERH Holdings, LLC

Reliant Energy Retail Holdings, LLC

Reliant Energy Retail Services, LLC

RE Retail Receivables, LLC

	 	 	 
	Name	 	Title
	Kevin T. Howell

	 	President
	Raymond Salort

	 	Vice President
	Jason B. Few

	 	Vice President
	Clare H. Doyle

	 	Vice President
	Eyvette
López Hetherington

	 	Vice President
	David R. Roylance

	 	Vice President
	Christopher Sotos

	 	Vice President and Treasurer
	Lynne Przychodzki

	 	Secretary

Exhibit I2 to CSRA

 

 

Reliant Energy Power Supply, LLC

	 	 	 
	Name	 	Title
	Kevin T. Howell

	 	President
	Raymond Salort

	 	Vice President
	Jason B. Few

	 	Vice President
	Clare H. Doyle

	 	Vice President
	Eyvette López Hetherington

	 	Vice President
	David R. Roylance

	 	Vice President
	Mark A. Durow

	 	Vice President
	Christopher Sotos

	 	Vice President and Treasurer
	Lynne Przychodzki

	 	Secretary

Exhibit I2 to CSRA

 

 

PART B

Chief Risk Officer

Krishnan Kasiviswanathan

Retail Credit Risk

Arlene Spangler

Frank Marian

Chris Slaughter

Bryan Gelotti

Paul Feldman

Market Risk

Felix Lu

Bucky Gardner

Robert Goerner

Manuel Ciobanu

Michael Naul

Javier Li

Retail Structuring & Pricing

Chet Mercier

John Adams

Stephen Bouvier

Cara Canovas

David Rissmiller

Ben Yamat

Aibing Zhang

Risk Reporting & Risk Control

Brad Radimer

Kathleen Graper

Allison Mundy

Matthew Condon

Amanda Lewis

Ethics & Compliance

Courtney Hebert

IT (Personnel remaining with RRI, that will support CSRA IT work and have

access to ML data in RRI systems)

Robert Thibeault

Kim Hales

Tana Lam

Bob Singleton

Mike Reckles

Exhibit I2 to CSRA

 

 

Chris Lurix

Debbie Duniphin

Maria Fernandez

Sreehari Gorantla

Renuka Joopelli

Kevin Keller

Bill King

Meily Mejia

Kristopher Michalsky

Sandeep Paliwal

Prasad Pati

Marco Perez

Sridevi Ravi

Charles Wheatley

Tamie Dowies

Joe Haven

Scott Yeargain

Donna Benefield

Juan Sanchez

Jeff Pratt

Exhibit I2 to CSRA

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