X-energy targets industrial heat with helium-cooled reactors

X-energy is developing the Xe-100, a small modular reactor designed to serve industrial manufacturers that need high-temperature heat for concrete, glass, steel, chemicals, plastics and fertilizers. Unlike traditional water-cooled nuclear plants, the Xe-100 would use helium gas as a coolant, allowing higher operating temperatures and lower pressures. The system would produce super-heated steam for direct industrial use, electricity generation of 80 megawatts (MW), or both.

The reactor would use TRISO fuel pebbles that are designed to resist corrosion and melting, with fuel continuously moving through the reactor before being recycled or removed as waste. X-energy says the design is intrinsically safe because rising internal temperatures would naturally slow and stop the nuclear reaction. Industrial heating accounts for 18 percent of annual global greenhouse-gas emissions, making high-temperature processes a major target for decarbonization.

The Xe-100 could also serve oil production, refining, data centers and electricity markets. X-energy says up to 12 reactors could be clustered to provide 24/7 on-site power. Major hurdles remain: commercial helium-cooled generation has struggled in China, SMR economics are unproven, and the Xe-100 might produce 10 times the spent fuel volume per unit of energy as existing reactors. A TRISO-X fuel factory is due in 2028, while projects with Dow, Amazon and a planned UK fleet target operation in the 2030s.