Bloom Energy sells stationary fuel cell servers — called Bloom Energy Servers — that generate electricity on-site using solid-oxide fuel cell technology. Each server is roughly the size of a parking space and can produce 300 kW of continuous power. Stack enough of them together and you’ve got a distributed power plant that runs independently of the grid.
The fuel cells work by electrochemically converting fuel (natural gas, biogas, or hydrogen) into electricity without combustion. That process is more efficient than burning fuel in a turbine and produces significantly fewer emissions. When running on biogas or green hydrogen, the systems can operate near zero-carbon. Bloom has also developed an electrolyzer version of its technology that runs the process in reverse, splitting water into hydrogen for storage or industrial use.
Bloom’s customer list reads like a Fortune 500 directory — Apple, Google, Walmart, Morgan Stanley, and Kaiser Permanente all run Bloom fuel cells at their facilities. The company has installed over 1.2 GW of capacity across more than 30 countries. Based in San Jose and publicly traded since 2018, Bloom employs roughly 3,700 people and generates over $1 billion in annual revenue. The growing demand for reliable, low-carbon power at data centers has become a major growth driver, with hyperscale operators increasingly looking at fuel cells as a complement to grid connections and backup generators.
