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Bloom Energy builds refrigerator-sized fuel cell boxes that make electricity from natural gas or hydrogen, and sells them to companies and utilities that need reliable power.
Bloom Energy makes big, boxy machines called fuel cells that sit outside buildings and quietly turn fuel into electricity. Instead of burning gas in a flame, these boxes use a chemical reaction to squeeze out power, sort of like a battery that never runs out as long as you keep feeding it fuel. Think of it as a personal power plant for a data center, hospital, or factory—one that keeps the lights on even when the grid goes down. The company started by selling to big names like Google and eBay, and today its customers include data centers, utilities, manufacturers, and hospitals that pay for the boxes upfront or sign long-term contracts for the electricity they produce. Roughly half its revenue comes from selling the equipment itself, with the rest coming from service, maintenance, and electricity sales over many years.
The business has shifted in an important way recently. Data centers are hungry for power, and the grid can't always keep up, so Bloom's fuel cells have become a fast way to get electricity on-site without waiting years for new transmission lines. The company is also pushing into hydrogen, since its boxes can run on that too, and it has partnerships with utilities and industrial giants to scale up. Bloom makes money in a few ways: selling the boxes, servicing them for years afterward, and sometimes owning the equipment and selling the power directly, like a mini utility. That last part is growing and tends to be steadier and more predictable than one-time equipment sales.
Bloom Energy was founded in 2001 by K.R. Sridhar, a former NASA scientist who originally worked on a way to make oxygen on Mars. When that plan changed, he realized the same technology could make clean, reliable power on Earth. The company went public in 2018 and has been working toward profitability ever since, burning through cash early on but recently getting closer to consistent positive cash flow. It doesn't pay a dividend, and it reinvests most of what it earns back into building more machines and expanding its service network. The big question for investors is whether demand from data centers and hydrogen projects will finally turn this long-time promise into a reliably profitable business.
Saved answer · last researched 16 Oct 2026