| Number | | | | | | Description | | | | | | Method of Filing | | |
| 2.1 | | | | | | Purchase and Sale Agreement, dated May 12, 2025, by and among NRG Energy, Inc., the Buyer Entities (as defined therein), Lightning Power Holdings, LLC, Thunder Generation, LLC, CCS Power Holdings, LLC, and Linebacker Power Development Funding, LLC* | | | | | | Incorporated herein by reference to Exhibit 2.1 to the Registrant's current report on Form 8-K filed on May 16, 2025. | | |
| 10.1 | | | | | | Fourteenth Amendment to Second Amended and Restated Credit Agreement, dated May 27, 2025, by and among NRG Energy, Inc., AXP Group LLC, Citicorp North America, Inc., as administrative agent, and certain financial institutions, as lenders*. | | | | | | Filed herewith. | | |
| 10.2 | | | | | | Fifteen Amendment to Second Amended and Restated Credit Agreement, dated July 22, 2025, by and among NRG Energy, Inc., Citicorp North America, Inc., as administrative agent and as collateral agent, and certain financial institutions, as lenders*. | | | | | | Incorporated herein by reference to Exhibit 10.1 to the Registrant's current report on Form 8-K filed on July 25, 2025. | | |
| 10.3 | | | | | | Amendment No. 5 to Receivables Loan and Servicing Agreement, dated as of June 20, 2025, by and among NRG Retail LLC, as Servicer, NRG Receivables LLC, as Borrower, NRG Energy, Inc., as Performance Guarantor, the Conduit Lenders, Committed Lenders, Facility Agents and LC Issuers party thereto, and Royal Bank of Canada, as administrative Agent, and attached thereto a clean, conformed copy of the Receivables Loan and Servicing Agreement. | | | | | | Filed herewith. | | |
| 10.4 | | | | | | Amended and Restated Employee Stock Purchase Plan | | | | | | Filed herewith. | | |
| 22.1 | | | | | | List of Guarantor Subsidiaries | | | | | | Filed herewith. | | |
| 31.1 | | | | | | Rule 13a-14(a)/15d-14(a) certification of Lawrence S. Coben. | | | | | | Filed herewith. | | |
| 31.2 | | | | | | Rule 13a-14(a)/15d-14(a) certification of Woo-Sung Chung. | | | | | | Filed herewith. | | |
| 31.3 | | | | | | Rule 13a-14(a)/15d-14(a) certification of G. Alfred Spencer. | | | | | | Filed herewith. | | |
| 32 | | | | | | Section 1350 Certification. | | | | | | Furnished herewith. | | |
| 101 INS | | | | | | Inline XBRL Instance Document. | | | | | | The instance document does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document. | | |
| 101 SCH | | | | | | Inline XBRL Taxonomy Extension Schema. | | | | | | Filed herewith. | | |
| 101 CAL | | | | | | Inline XBRL Taxonomy Extension Calculation Linkbase. | | | | | | Filed herewith. | | |
| 101 DEF | | | | | | Inline XBRL Taxonomy Extension Definition Linkbase. | | | | | | Filed herewith. | | |
| 101 LAB | | | | | | Inline XBRL Taxonomy Extension Label Linkbase. | | | | | | Filed herewith. | | |
| 101 PRE | | | | | | Inline XBRL Taxonomy Extension Presentation Linkbase. | | | | | | Filed herewith. | | |
| 104 | | | | | | Cover Page Interactive Data File (the cover page interactive data file does not appear in Exhibit 104 because it's Inline XBRL tags are embedded within the Inline XBRL document). | | | | | | Filed herewith. | | |