✦ Electrolyzers & the Hydrogen OptionThin moat

Bloom's least-priced asset is that its technology is reversible. The same solid-oxide stack that turns gas into electricity can be run the other way as an electrolyzer, splitting water into hydrogen — and because solid-oxide cells run hot, they are unusually efficient when someone else supplies the heat. That physics explains both partnerships. In March 2026 Shell agreed to work with Bloom on replicable, large-scale solid-oxide electrolyzer systems producing hydrogen for its own assets¹. And with Westinghouse, Bloom signed a letter of intent to pair electrolyzers with AP300 small modular reactors, whose continuous steam is close to an ideal input². Electrolyzer production capacity has been expanded toward 2 gigawatts³.

As an option this is cheap and real: the manufacturing, the supply chain and the engineering are shared with the fuel-cell business, so hydrogen costs Bloom relatively little to keep alive. If green hydrogen ever becomes an industry rather than a policy ambition, Bloom would already be inside it with partners of consequence.

As a business it remains almost entirely prospective. Clean hydrogen has disappointed for a decade — the economics need cheap power, subsidy stability and offtake at scale, and both the Westinghouse arrangement and the nuclear projects behind it sit years out. Watch for electrolyzer revenue appearing as a disclosed line rather than a footnote, and for a firm order following either letter of intent. Until then this is the page's purest option — worth holding, worth nothing yet.