The 2009 Nuclear Startup Betting Helium Can Decarbonize Heavy Industry

Solar panels and wind turbines are excellent at making electricity. They do nothing about the raw, intense heat that heavy industry needs to churn out concrete, glass, steel, plastics, and chemicals — processes still powered overwhelmingly by fossil fuels. That heat gap is exactly where X-energy thinks nuclear fits, according to MIT Technology Review.

Helium instead of water

X-energy's proposed Xe-100 reactor cools itself with helium gas rather than water, which lets it run at lower pressure but much higher temperatures. The helium heats water into super-heated steam, which an industrial customer can use directly for manufacturing heat, run through a turbine to generate 80 megawatts of electricity, or split between the two, the report explains. That's roughly a tenth of the output of a typical reactor running today.

The fuel is a modern uranium pellet called TRISO, designed to resist corrosion and melting. Compact "pebbles" of the fuel feed in from the top of the reactor and drift downward over time, then get recycled or removed as waste. The company says the design is intrinsically safe on a power loss — if internal temperatures rise, the reaction naturally slows and shuts itself down.

Why industry is the target

Industrial heating accounts for 18 percent of annual global greenhouse-gas emissions, MIT Technology Review reports, citing World Business Council for Sustainable Development data — and about half of that comes from high-temperature processes that are hard to electrify. Parking small reactors beside big factories could carve out some of the largest carbon footprints in the world.

The same reactor could serve fossil fuel producers too, which today burn enormous amounts of natural gas to generate heat for tar-sands oil recovery and refining. And because the units are small, they can scale down to serve individual data centers — a notable pitch now that AI and data centers are the single largest component of new U.S. electricity demand, with consumption expected to double again by 2030, per Federal Energy Regulatory Commission and International Energy Agency figures cited in the report. X-energy says up to 12 Xe-100 units could be clustered for round-the-clock on-site power at lower cost than a traditional nuclear station, with no new transmission lines required.

What could go wrong

The caveats are substantial. Helium-cooled fission is well understood in principle, but the only commercial-scale generation of this type operating today is in China, where two reactors have struggled to run continuously. X-energy argues its vertically integrated fuel supply will make operation reliable, with a 60-year reactor lifetime.

The economics are also unproven. Nuclear costs and construction timelines have a history of ballooning, and the U.S. Energy Information Administration estimates electricity from small modular reactors will cost more than six times what solar farms produce. On waste, TRISO reactors look strong on safety and nonproliferation — the tough spheres are hard to weaponize — but may produce roughly ten times the volume of spent fuel per unit of energy as existing reactors, though at lower storage sophistication requirements.

The road ahead

The U.S. Nuclear Regulatory Commission has licensed X-energy's subsidiary to fabricate TRISO-X pebbles, with a first factory expected in 2028. An Xe-100 designed to supply heat and power to a large Dow chemical facility in Texas has cleared its first regulatory hurdle and could be operational by the early 2030s, the report says. In parallel, the company is pursuing a 320-megawatt, four-reactor cluster in Richland, Washington, in collaboration with Amazon, plus a larger 6-gigawatt fleet in the U.K.'s northeast — both targeting electricity generation in the 2030s.

Written by the BidAsk Newsroom. Based on reporting from the sources below.