As of December 2025 NRG Energy has a market cap of โน2.603 Trillion. This makes NRG Energy the world's 806th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Dec 17th, 2025 the market cap of NRG Energy was reported to be: