As of April 2026 Plug Power has a market cap of C$4.38 Billion. This makes Plug Power the world's 3889th 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 Mar 31st, 2026 the market cap of Plug Power was reported to be: