NRG Energy (NRG) - Market capitalization

Market cap: €27.08 Billion

As of December 2025 NRG Energy has a market cap of €27.08 Billion. This makes NRG Energy the world's 740th 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.

Market cap history of NRG Energy from 2003 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	€27.08 B	51.3%
2024	€17.89 B	69.52%
2023	€10.55 B	54.5%
2022	€6.83 B	-26.62%
2021	€9.31 B	24.92%
2020	€7.45 B	-15.61%
2019	€8.83 B	-10.02%
2018	€9.81 B	30.64%
2017	€7.51 B	104.42%
2016	€3.67 B	8.71%
2015	€3.38 B	-54.66%
2014	€7.46 B	10.79%
2013	€6.73 B	20.09%
2012	€5.60 B	74.74%
2011	€3.20 B	-11.64%
2010	€3.63 B	-13.24%
2009	€4.18 B	7.62%
2008	€3.88 B	-44.65%
2007	€7.02 B	35.33%
2006	€5.19 B	61.75%
2005	€3.21 B	38.77%
2004	€2.31 B	-33.15%
2003	€3.46 B

End of Day market cap according to different sources

On Dec 6th, 2025 the market cap of NRG Energy was reported to be:

€26.82 Billion

by Nasdaq

€27.08 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Edison International EIX	€19.20 B	-29.10%	🇺🇸 USA
Southern Company SO	€81.59 B	201.32%	🇺🇸 USA
OGE Energy OGE	€7.68 B	-71.64%	🇺🇸 USA
AES AES	€8.51 B	-68.56%	🇺🇸 USA
Duke Energy DUK	€77.82 B	187.39%	🇺🇸 USA
Exelon Corporation EXC	€38.00 B	40.34%	🇺🇸 USA
Nextera Energy NEE	€148.69 B	449.10%	🇺🇸 USA
Entergy ETR	€36.14 B	33.46%	🇺🇸 USA
Sempra Energy SRE	€50.82 B	87.67%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of NRG Energy (NRG)

Market cap: €27.08 Billion