Plug Power (PLUG) - Market capitalization

Market cap: £2.31 Billion

As of December 2025 Plug Power has a market cap of £2.31 Billion. This makes Plug Power the world's 3896th 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 Plug Power from 1999 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	£2.31 B	33.79%
2024	£1.72 B	-19.2%
2023	£2.13 B	-64.12%
2022	£5.96 B	-50.55%
2021	£12.05 B	16.58%
2020	£10.33 B	1314.22%
2019	£0.73 B	241.49%
2018	£0.21 B	-46.34%
2017	£0.39 B	127.13%
2016	£0.17 B	-31.5%
2015	£0.25 B	-23.2%
2014	£0.33 B	234.59%
2013	£99.78 M	743.54%
2012	£11.82 M	-60.36%
2011	£29.84 M	-5.86%
2010	£31.69 M	-44.26%
2009	£56.86 M	-7.56%
2008	£61.51 M	-64.8%
2007	£0.17 B	1.37%
2006	£0.17 B	-32.5%
2005	£0.25 B	9.53%
2004	£0.23 B	-21.04%
2003	£0.29 B	106.76%
2002	£0.14 B	-52.92%
2001	£0.30 B	-29.62%
2000	£0.43 B	-42.69%
1999	£0.75 B

End of Day market cap according to different sources

On Dec 9th, 2025 the market cap of Plug Power was reported to be:

£2.31 Billion

by Nasdaq

£2.31 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Ballard Power Systems BLDP	£0.63 B	-72.42%	🇨🇦 Canada
FuelCell Energy FCEL	£0.29 B	-87.04%	🇺🇸 USA
Capstone Green Energy CGRN	£5.1 M	-99.78%	🇺🇸 USA
Walmart WMT	£689.76 B	29,732.20%	🇺🇸 USA
Procter & Gamble PG	£245.72 B	10,527.52%	🇺🇸 USA
Air Products and Chemicals APD	£38.62 B	1,570.37%	🇺🇸 USA
Lowe's Companies LOW	£102.35 B	4,326.79%	🇺🇸 USA
General Electric GE	£227.49 B	9,738.98%	🇺🇸 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 Plug Power (PLUG)

Market cap: £2.31 Billion