v3.19.3
Cover Cover
Nov. 07, 2019
Cover page.  
Document Type 8-K
Document Period End Date Nov. 07, 2019
Entity Registrant Name NRG ENERGY, INC.
Entity Central Index Key 0001013871
Amendment Flag false
Entity Incorporation, State or Country Code DE
Entity File Number 001-15891
Entity Tax Identification Number 41-1724239
Entity Address, Address Line One 804 Carnegie Center
Entity Address, City or Town Princeton
Entity Address, State or Province NJ
Entity Address, Postal Zip Code 08540
City Area Code 609
Local Phone Number 524-4500
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.01
Trading Symbol NRG
Security Exchange Name NYSE
Entity Emerging Growth Company false