Exhibit 4.1

ONE HUNDRED-TENTH SUPPLEMENTAL INDENTURE FOR
ADDITIONAL SUBSIDIARY GUARANTEES

ONE-HUNDRED TENTH SUPPLEMENTAL INDENTURE (this “Supplemental Indenture for Additional Guarantees”), dated as of March 24, 2014, among Bayou Cove Peaking Power, LLC, a Delaware limited liability company (the “Guaranteeing Subsidiary”), a subsidiary of NRG Energy, Inc., a Delaware corporation (the “Company”), the Company, the Existing Guarantors set forth on the signature pages hereto (the “Existing Guarantors”), and Law Debenture Trust Company of New York, as trustee under the Indenture referred to below (the “Trustee”).

W I T N E S S E T H

WHEREAS, the Company has heretofore executed and delivered to the Trustee an indenture (the “Base Indenture”), dated as of February 2, 2006, between the Company and the Trustee, as amended by (i) a twenty-second supplemental indenture (the “Twenty-Second Supplemental Indenture”), dated as of June 5, 2009, among the Company, the Guarantors party thereto and the Trustee, providing for the original issuance of an aggregate principal amount of $700 million of 8.50% Senior Notes due 2019 (the “8.50% 2019 Initial Notes”), and, subject to the terms of the Twenty-Second Supplemental Indenture, future unlimited issuances of 8.50% Senior Notes due 2019 (the “8.50% 2019 Additional Notes,” and together with the 8.50% 2019 Initial Notes, the “8.50% 2019 Notes”), (ii) a thirty-sixth supplemental indenture (the “Thirty-Sixth Supplemental Indenture”), dated as of August 20, 2010, among the Company, the Guarantors party thereto and the Trustee, providing for the original issuance of an aggregate principal amount of $1,100 million of 8.25% Senior Notes due 2020 (the “2020 Initial Notes”), and, subject to the terms of the Thirty-Sixth Supplemental Indenture, future unlimited issuances of 8.25% Senior Notes due 2020 (the “2020 Additional Notes,” and together with the 2020 Initial Notes, the “2020 Notes”), (iii) a forty-second supplemental indenture (the “Forty-Second Supplemental Indenture”), dated as of January 26, 2011, among the Company, the Guarantors party thereto and the Trustee, providing for the original issuance of an aggregate principal amount of $1,200 million of 7.625% Senior Notes due 2018 (the “2018 Initial Notes”), and, subject to the terms of the Forty-Second Supplemental Indenture, future unlimited issuances of 7.625% Senior Notes due 2018 (the “2018 Additional Notes,” and together with the 2018 Initial Notes, the “2018 Notes”), (iv) a fiftieth supplemental indenture (the “Fiftieth Supplemental Indenture”), dated as of May 24, 2011, among the Company, the Guarantors party thereto and the Trustee, providing for the original issuance of an aggregate principal amount of $800 million of 7.625% Senior Notes due 2019 (the “7.625% 2019 Initial Notes”), and, subject to the terms of the Fiftieth Supplemental Indenture, future unlimited issuances of 7.625% Senior Notes due 2019 (the “7.625% 2019 Additional Notes,” and together with the 7.625% 2019 Initial Notes, the “7.625% 2019 Notes”), (v) a fifty-first supplemental indenture (the “Fifty-First Supplemental Indenture”), dated as of May 24, 2011, among the Company, the Guarantors party thereto and the Trustee, providing for the original issuance of an aggregate principal amount of $1,200 million of 7.875% Senior Notes due 2021 (the “2021 Initial Notes”), and, subject to the terms of the Fifty-First Supplemental Indenture, future unlimited issuances of 7.875% Senior Notes due 2021 (the “2021 Additional Notes,” and together with the 2021 Initial Notes, the “2021 Notes”), (vi) a seventieth supplemental indenture (the “Seventieth Supplemental Indenture”), dated as of September 24, 2012, among the Company, the Guarantors party thereto and the Trustee, providing for the original issuance of an aggregate principal amount of $990 million of 6.625% Senior Notes due 2023 (the “2023 Initial Notes”), and, subject to the terms of the Seventieth Supplemental Indenture, future unlimited issuances of 6.625% Senior Notes due 2023 (the “2023 Additional Notes,” and together with the 2023 Initial Notes, the “2023 Notes”), and (vii) a one hundred-ninth supplemental indenture (the “One Hundred-Ninth Supplemental Indenture” and, collectively with the Base Indenture, the Twenty-Second Supplemental Indenture, the Thirty-Sixth Supplemental Indenture, the Forty-Second Supplemental Indenture, the Fiftieth Supplemental Indenture the Fifty-First Supplemental Indenture and the Seventieth Supplemental Indenture, each as further supplemented and amended to the date hereof, the “Indenture”), dated as of January 27, 2014, among the Company, the Guarantors party thereto and the

Trustee, providing for the original issuance of an aggregate principal amount of $1,100 million of 6.250% Senior Notes due 2022 (the “2022 Initial Notes”), and subject to the terms of the One Hundred-Ninth Supplemental Indenture, future unlimited issuances of 6.250% Senior Notes due 2022 (the “2022 Additional Notes,” and together with the 2022 Initial Notes, the “2022 Notes,” which, collectively with the 8.50% 2019 Notes, the 2020 Notes, the 2018 Notes, the 7.625% 2019 Notes, the 2021 Notes and the 2023 Notes, are referred to herein as the “Notes”);

WHEREAS, the Indenture provides that under certain circumstances the Guaranteeing Subsidiary shall execute and deliver to the Trustee a supplemental indenture pursuant to which the Guaranteeing Subsidiary shall unconditionally guarantee all of the Company’s Obligations under the Notes and the Indenture (the “Additional Guarantees”); and

WHEREAS, pursuant to Section 4.17 of each of the Twenty-Second Supplemental Indenture, the Thirty-Sixth Supplemental Indenture, the Forty-Second Supplemental Indenture, the Fiftieth Supplemental Indenture, the Fifty-First Supplemental Indenture and the Seventieth Supplemental Indenture, and Section 4.16 of the One Hundred-Ninth Supplemental Indenture, the Trustee, the Company and the Existing Guarantors are authorized and required to execute and deliver this Supplemental Indenture for Additional Guarantees.

NOW THEREFORE, in consideration of the foregoing and for good and valuable consideration, the receipt of which is hereby acknowledged, the Guaranteeing Subsidiary, the Trustee, the Company and the Existing Guarantors mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows:

1.             Capitalized Terms. Unless otherwise defined in this Supplemental Indenture for Additional Guarantees, capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.

2.             Agreement to Be Bound; Guarantees. The Guaranteeing Subsidiary hereby becomes party to the Indenture as a Guarantor and as such will have all of the rights and be subject to all of the Obligations and agreements of a Guarantor under the Indenture.  The Guaranteeing Subsidiary hereby agrees to be bound by all of the provisions of the Indenture applicable to a Guarantor and to perform all of the Obligations and agreements of a Guarantor under the Indenture.  In furtherance of the foregoing, the Guaranteeing Subsidiary shall be deemed a Guarantor for purposes of Article 10 of each of the Twenty-Second Supplemental Indenture, the Thirty-Sixth Supplemental Indenture, the Forty-Second Supplemental Indenture, the Fiftieth Supplemental Indenture, the Fifty-First Supplemental Indenture, the Seventieth Supplemental Indenture and the One Hundred-Ninth Supplemental Indenture, including, without limitation, Section 10.02 thereof.

3.             NEW YORK LAW TO GOVERN. THE INTERNAL LAW OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE THIS SUPPLEMENTAL INDENTURE FOR ADDITIONAL GUARANTEES BUT WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY.

4.             Counterparts. The parties may sign any number of copies of this Supplemental Indenture for Additional Guarantees.  Each signed copy shall be an original, but all of them together represent the same agreement.

5.             Effect of Headings. The Section headings herein are for convenience only and shall not affect the construction hereof.

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6.             The Trustee. The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Supplemental Indenture for Additional Guarantees or for or in respect of the recitals contained herein, all of which recitals are made solely by the Guaranteeing Subsidiary and the Company.

7.             Ratification of Indenture; Supplemental Indenture for Additional Guarantees Part of Indenture. Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect.  This Supplemental Indenture for Additional Guarantees shall form a part of the Indenture for all purposes, and every Holder of Notes heretofore or hereafter authenticated and delivered shall by bound hereby.

[Signatures on following pages]

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IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture for Additional Guarantees to be duly executed and attested, all as of the date first above written.

GUARANTEEING SUBSIDIARY:
BAYOU COVE PEAKING POWER, LLC
By:	/s/ Lynne Wittkamp
	Name:	Lynne Wittkamp
	Title:	Assistant Secretary

Signature Page to One Hundred-Tenth Supplemental Indenture

ISSUER:
NRG ENERGY, INC.
By:	/s/ Brian Curci
	Name:	Brian Curci
	Title:	Corporate Secretary

EXISTING GUARANTORS:

ARTHUR KILL POWER LLC

ASTORIA GAS TURBINE POWER LLC

CABRILLO POWER I LLC

CABRILLO POWER II LLC

CARBON MANAGEMENT SOLUTIONS LLC

CLEAN EDGE ENERGY LLC

CONEMAUGH POWER LLC

CONNECTICUT JET POWER LLC

COTTONWOOD DEVELOPMENT LLC

COTTONWOOD GENERATING PARTNERS I LLC

COTTONWOOD GENERATING PARTNERS II LLC

COTTONWOOD GENERATING PARTNERS III LLC

DEVON POWER LLC

DUNKIRK POWER LLC

EASTERN SIERRA ENERGY COMPANY LLC

EL SEGUNDO POWER, LLC

EL SEGUNDO POWER II LLC

ENERGY PLUS HOLDINGS LLC

ENERGY PLUS NATURAL GAS LLC

ENERGY PROTECTION INSURANCE COMPANY

GREEN MOUNTAIN ENERGY COMPANY (NY COM) LLC

GREEN MOUNTAIN ENERGY COMPANY (NY RES) LLC

HUNTLEY POWER LLC

INDEPENDENCE ENERGY ALLIANCE LLC

INDEPENDENCE ENERGY NATURAL GAS LLC

INDIAN RIVER OPERATIONS INC.

INDIAN RIVER POWER LLC

KEYSTONE POWER LLC

LANGFORD WIND POWER, LLC

MERIDEN GAS TURBINES LLC

Signature Page to One Hundred-Tenth Supplemental Indenture

MIDDLETOWN POWER LLC

MONTVILLE POWER LLC

NEO CORPORATION

NEO FREEHOLD-GEN LLC

NEO POWER SERVICES INC.

NORWALK POWER LLC

NRG AFFILIATE SERVICES INC.

NRG ARTESIAN ENERGY LLC

NRG ARTHUR KILL OPERATIONS INC.

NRG ASTORIA GAS TURBINE OPERATIONS INC.

NRG BAYOU COVE LLC

NRG CABRILLO POWER OPERATIONS INC.

NRG CALIFORNIA PEAKER OPERATIONS LLC

NRG CEDAR BAYOU DEVELOPMENT COMPANY, LLC

NRG CONNECTICUT AFFILIATE SERVICES INC.

NRG DEVELOPMENT COMPANY INC.

NRG DEVON OPERATIONS INC.

NRG DISPATCH SERVICES LLC

NRG DUNKIRK OPERATIONS INC.

NRG EL SEGUNDO OPERATIONS INC.

NRG ENERGY SERVICES GROUP LLC

NRG GENERATION HOLDINGS, INC.

NRG HOME & BUSINESS SOLUTIONS LLC

NRG HOME SOLUTIONS PRODUCT LLC

NRG HUNTLEY OPERATIONS INC.

NRG IDENTITY PROTECT LLC

NRG ILION LP LLC

NRG INTERNATIONAL LLC

NRG MEXTRANS INC.

NRG MIDATLANTIC AFFILIATE SERVICES INC.

NRG MIDDLETOWN OPERATIONS INC.

NRG MONTVILLE OPERATIONS INC.

NRG NEW JERSEY ENERGY SALES LLC

NRG NORTH CENTRAL OPERATIONS INC.

NRG NORTHEAST AFFILIATE SERVICES INC.

NRG NORWALK HARBOR OPERATIONS INC.

NRG OPERATING SERVICES, INC.

NRG OSWEGO HARBOR POWER OPERATIONS INC.

NRG PACGEN INC.

NRG POWER MARKETING LLC

Signature Page to One Hundred-Tenth Supplemental Indenture

NRG RENTER’S PROTECTION LLC
NRG RETAIL LLC
NRG ROCKFORD ACQUISITION LLC
NRG SAGUARO OPERATIONS INC.
NRG SECURITY LLC
NRG SERVICES CORPORATION
NRG SIMPLYSMART SOLUTIONS LLC
NRG SOUTH CENTRAL AFFILIATE SERVICES INC.
NRG SOUTH CENTRAL GENERATING LLC
NRG SOUTH CENTRAL OPERATIONS INC.
NRG TEXAS C&I SUPPLY LLC
NRG UNEMPLOYMENT PROTECTION LLC
NRG WARRANTY SERVICES LLC
NRG WEST COAST LLC
NRG WESTERN AFFILIATE SERVICES INC.
O’BRIEN COGENERATION, INC. II
ONSITE ENERGY, INC.
OSWEGO HARBOR POWER LLC
RERH HOLDINGS, LLC
SAGUARO POWER LLC
SOMERSET OPERATIONS INC.
SOMERSET POWER LLC
US RETAILERS LLC
VIENNA OPERATIONS INC.
VIENNA POWER LLC
WCP (GENERATION) HOLDINGS LLC
WEST COAST POWER LLC
By:	/s/ Lynne Wittkamp
	Name:	Lynne Wittkamp
	Title:	Assistant Secretary

Signature Page to One Hundred-Tenth Supplemental Indenture

COTTONWOOD ENERGY COMPANY LP
By: Cottonwood Generating Partners I LLC, its General Partner
	By:			/s/ Lynne Wittkamp
				Name:				Lynne Wittkamp
				Title:				Assistant Secretary
COTTONWOOD TECHNOLOGY PARTNERS LP
By: Cottonwood Generating Partners I LLC, its General Partner
	By:		/s/ Lynne Wittkamp
			Name:				Lynne Wittkamp
			Title:				Assistant Secretary
ELBOW CREEK WIND PROJECT LLC
	By:			/s/ Lynne Wittkamp
				Name:				Lynne Wittkamp
				Title:				Assistant Secretary
GCP FUNDING COMPANY, LLC
By:		/s/ Elizabeth McCormack
		Name:				Elizabeth McCormack
		Title:				Assistant Secretary
GREEN MOUNTAIN ENERGY COMPANY
By:		/s/ G. Gary Garcia
		Name:				G. Gary Garcia
		Title:				Vice President, Treasury
NRG CONSTRUCTION LLC
By:		/s/ Gaetan Frotte
		Name:			Gaetan Frotte
		Title:			Vice President and Treasurer

Signature Page to One Hundred-Tenth Supplemental Indenture

ACE ENERGY, INC.
ALLIED WARRANTY LLC
BIDURENERGY, INC.
ENERGY CURTAILMENT SPECIALISTS, INC.
LONE STAR A/C & APPLIANCE REPAIR, LLC
NRG CURTAILMENT SOLUTIONS LLC
NRG ENERGY LABOR SERVICES LLC
NRG ENERGY SERVICES LLC
NRG HOME SOLUTIONS LLC
NRG HOMER CITY SERVICES LLC
NRG MAINTENANCE SERVICES LLC
NRG RELIABILITY SOLUTIONS LLC
By:		/s/ Gaetan Frotte
		Name:		Gaetan Frotte
		Title:		Vice President and Treasurer
NRG ILION LIMITED PARTNERSHIP
By: NRG Rockford Acquisition LLC, its General Partner
	By:		/s/ Lynne Wittkamp
			Name:		Lynne Wittkamp
			Title:		Assistant Secretary
NRG SOUTH TEXAS LP
By: Texas Genco GP, LLC, its General Partner
By:		/s/ Elizabeth McCormack
		Name:		Elizabeth McCormack
		Title:		Assistant Secretary
NRG ENERGY SERVICES INTERNATIONAL INC.
NRG RETAIL NORTHEAST LLC
By:		/s/ Elizabeth McCormack
		Name:		Elizabeth McCormack
		Title:		Assistant Secretary

Signature Page to One Hundred-Tenth Supplemental Indenture

TEXAS GENCO SERVICES, LP
By: New Genco GP, LLC, its General Partner
	By:	/s/ G. Gary Garcia
		Name:	G. Gary Garcia
		Title:	Vice President and Treasurer

EVERYTHING ENERGY LLC

RE RETAIL RECEIVABLES, LLC

RELIANT ENERGY NORTHEAST LLC

RELIANT ENERGY POWER SUPPLY LLC

RELIANT ENERGY RETAIL HOLDINGS, LLC

RELIANT ENERGY RETAIL SERVICES, LLC

INDEPENDENCE ENERGY GROUP LLC

By:	/s/ Lynne Wittkamp
	Name:	Lynne Wittkamp
	Title:	Assistant Secretary
ENERGY ALTERNATIVES WHOLESALE, LLC
GREGORY PARTNERS, LLC
GREGORY POWER PARTNERS LLC
NEW GENCO GP, LLC
NRG TEXAS GREGORY LLC
NRG TEXAS LLC
NRG TEXAS POWER LLC
TEXAS GENCO FINANCING CORP.
TEXAS GENCO HOLDINGS, INC.
TEXAS GENCO GP, LLC
TEXAS GENCO OPERATING SERVICES, LLC
By:	/s/ G. Gary Garcia
	Name:	G. Gary Garcia
	Title:	Vice President and Treasurer

Signature Page to One Hundred-Tenth Supplemental Indenture

LOUISIANA GENERATING LLC
NRG NEW ROADS HOLDINGS LLC
NRG TEXAS HOLDING INC.
By:	/s/ G. Gary Garcia
	Name:	G. Gary Garcia
	Title:	Treasurer
TEXAS GENCO LP, LLC
By:	/s/ G. Gary Garcia
	Name:	G. Gary Garcia
	Title:	Manager

Signature Page to One Hundred-Tenth Supplemental Indenture

LAW DEBENTURE TRUST COMPANY OF NEW YORK,
as Trustee
By:	/s/ James D. Heaney
	Name:	James D. Heaney
	Title:	Managing Director

Signature Page to One Hundred-Tenth Supplemental Indenture