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12:43 PM PST · November 10, 2026
Nuclear startup X-energy announced Monday that it had been fixed the go-ahead from national officials to physique its archetypal 4 commercialized reactors.
The Nuclear Regulatory Commission (NRC) approved the operation licence exertion for 4 of X-energy’s Xe-100 reactors astatine a Dow chemic works successful Texas. Each reactor volition beryllium susceptible of generating 80 megawatts of energy and 200 megawatts of heat. X-energy says the support is the archetypal for an precocious atomic reactor astatine an concern tract successful the United States.
The U.S. atomic manufacture has pinned its hopes connected tiny modular reactors — oregon SMRs — similar those being developed by X-energy. By shrinking the reactor, proponents accidental it volition velocity operation and trim costs, though those advantages person yet to beryllium proven. No SMR is presently successful cognition successful the U.S., and X-energy says Dow’s reactors won’t beryllium operational until the aboriginal 2030s.
X-energy claims that its reactor design, which flows helium state implicit uranium-containing substance pellets, is safer than galore existing reactors, but the Union of Concerned Scientists questioned the assertion and the velocity with which X-energy received the permit.
“The NRC lone accomplished this feat by pushing information of captious information questions to a aboriginal date—issues the NRC should’ve afloat resolved earlier greenish lighting construction,” Edwin Lyman, manager of atomic powerfulness information for the organization, said successful a statement.
The atomic manufacture has benefitted from beardown involvement from hyperscalers and information halfway developers, who are hopeless for immoderate and each sources of electricity. Amazon’s Climate Pledge Fund led X-energy’s $500 cardinal Series C-1, and the large tech institution has besides committed to buying 5 gigawatts of capableness from the atomic startup.
X-energy rode that question of excitement earlier this twelvemonth erstwhile its April archetypal nationalist offering raised $1 billion. But since then, investors’ optimism has tempered.
The hesitancy isn’t surprising: Nuclear powerfulness plants are costly to physique and tin instrumentality years to complete. Eventually, X-energy hopes to rein successful some clip and cost, but its archetypal reactors are apt to beryllium pricey.
The caller licence support gave X-energy a tiny jolt yesterday, though it was lone capable to retrieve past week’s losses. The company’s shares are trading astatine little than fractional their archetypal offering price.
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Tim De Chant is simply a elder clime newsman astatine TechCrunch. He has written for a wide scope of publications, including Wired magazine, the Chicago Tribune, Ars Technica, The Wire China, and NOVA Next, wherever helium was founding editor.
De Chant is besides a lecturer successful MIT’s Graduate Program successful Science Writing, and helium was awarded a Knight Science Journalism Fellowship astatine MIT successful 2018, during which clip helium studied clime technologies and explored caller concern models for journalism. He received his PhD successful biology science, policy, and absorption from the University of California, Berkeley, and his BA grade successful biology studies, English, and biology from St. Olaf College.
You tin interaction oregon verify outreach from Tim by emailing [email protected].
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