UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 8, 2015

NRG ENERGY, INC.

(Exact name of Registrant as specified in its charter)

211 Carnegie Center, Princeton, New Jersey 08540
(Address of principal executive offices, including zip code)

(609) 524-4500
(Registrant’s telephone number, including area code)

N/A
(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
o    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 1.01 Entry Into a Material Definitive Agreement.

One Hundred-Fifteenth Supplemental Indenture

On April 8, 2015, NRG Energy, Inc. (“NRG”), the subsidiaries of NRG currently party to the Indenture (defined below), NRG Business Services LLC (the “Guaranteeing Subsidiary”), and Law Debenture Trust Company of New York, as trustee (the “Trustee”), entered into the one hundred-fifteenth supplemental indenture (the “One Hundred-Fifteenth Supplemental Indenture”), supplementing the indenture, dated as of February 2, 2006 (the “Base Indenture”), as supplemented by (i) the thirty-sixth supplemental indenture, dated as of August 20, 2010 (the “Thirty-Sixth Supplemental Indenture”), among NRG, the guarantors party thereto and the Trustee, pursuant to which NRG issued $1,100,000,000 aggregate principal amount of 8.25% senior notes due 2020 (the “2020 Notes”), (ii) the forty-second supplemental indenture, dated as of January 26, 2011 (the “Forty-Second Supplemental Indenture”), among NRG, the guarantors party thereto and the Trustee, pursuant to which NRG issued $1,200,000,000 aggregate principal amount of 7.625% senior notes due 2018 (the “2018 Notes”), (iii) the fifty-first supplemental indenture, dated as of May 24, 2011 (the “Fifty-First Supplemental Indenture”), among NRG, the guarantors party thereto and the Trustee, pursuant to which NRG issued $1,200,000,000 aggregate principal amount of 7.875% senior notes due 2021 (the “2021 Notes”), (iv) the seventieth supplemental indenture, dated as of September 24, 2012 (the “Seventieth Supplemental Indenture”), among NRG, the guarantors party thereto and the Trustee, pursuant to which NRG issued $990,000,000 aggregate principal amount of 6.625% senior notes due 2023 (the “2023 Notes”), and (v) the one hundred-ninth supplemental indenture, dated as of January 27, 2014 (the “One Hundred-Ninth Supplemental Indenture,” and together with the Base Indenture, the Thirty-Sixth Supplemental Indenture, the Forty-Second Supplemental Indenture, the Fifty-First Supplemental Indenture and the Seventieth Supplemental Indenture, each as further supplemented and amended to the date hereof, the “Indenture”), among NRG, the guarantors party thereto and the Trustee, pursuant to which NRG issued $1,100,000,000 aggregate principal amount of 6.250% senior notes due 2022 (the “2022 Notes,” and collectively with the 2020 Notes, the 2018 Notes, 2021 Notes and the 2023 Notes, the “Notes”).  Pursuant to the One Hundred-Fifteenth Supplemental Indenture, the Guaranteeing Subsidiary became a guarantor of NRG’s obligations under the Notes.

A copy of the One Hundred-Fifteenth Supplemental Indenture is attached as Exhibit 4.1 to this Current Report on Form 8-K and is incorporated by reference herein. The description of the material terms of the One Hundred-Fifteenth Supplemental Indenture is qualified in its entirety by reference to such exhibit.

Fifth Supplemental Indenture

On April 8, 2015, NRG, the subsidiaries of NRG currently party to the 2014 Indenture (defined below), the Guaranteeing Subsidiary, and the Trustee, as trustee under the 2014 Indenture, entered into the fifth supplemental indenture (the “Fifth Supplemental Indenture”), supplementing the indenture, dated as of April 21, 2014 (the “2014 Indenture”), pursuant to which NRG issued $1,000,000,000 aggregate principal amount of 6.25% senior notes due 2024 (the “2024 Notes”).  Pursuant to the Fifth Supplemental Indenture, the Guaranteeing Subsidiary became a guarantor of NRG’s obligations under the 2024 Notes.

A copy of the Fifth Supplemental Indenture is attached as Exhibit 4.2 to this Current Report on Form 8-K and is incorporated by reference herein. The description of the material terms of the Fifth Supplemental Indenture is qualified in its entirety by reference to such exhibit.

Item 9.01 Financial Statements and Exhibits

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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EXHIBIT INDEX

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