NRC Grants X-energy Construction Permit in Texas
The permit lets construction of small modular reactors begin at Dow's Texas site, but does not authorize operation.
Updated on Nov. 13, 2026 in Nuclear
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The Nuclear Regulatory Commission has granted X-energy a construction permit for reactors in Texas, allowing construction to proceed. The permit does not authorize the reactors to operate.
Why it matters
No small modular reactor is currently operating in the US, so this project tests whether smaller designs can be built faster and cheaper. Growing electricity demand from data centres and other large power users is driving interest in the technology.
The project's financing includes a $1 billion initial public offering and a $500 million Series C-1 round led by Amazon, which has committed to buying 5GW of capacity. Whether the reactors will meet their projected early-2030s start date remains unresolved.
The players
X-energy
X-energy is a company developing small modular nuclear reactors that use helium-cooled, uranium-fueled designs intended to reduce construction times and costs.
Nuclear Regulatory Commission
The Nuclear Regulatory Commission is the independent U.S. federal agency that licenses and regulates civilian nuclear reactors and materials.
Dow
Dow is a major American chemical manufacturer whose Texas site is the planned location for the X-energy reactors to supply industrial power and heat.
Union of Concerned Scientists
The Union of Concerned Scientists is a nonprofit science advocacy organization that has publicly challenged X-energy's safety claims.
Amazon
Amazon is a technology and cloud computing company that led a $500 million funding round for X-energy and has committed to buying 5GW of its capacity.
The details
X-energy's design passes helium gas over fuel containing uranium, and the project uses smaller reactor designs intended to cut construction time and cost. The reactors are intended to supply electricity and heat for industrial use at Dow's site. The Union of Concerned Scientists has challenged X-energy's safety claim.
Timeline
April: X-energy completed its $1 billion initial public offering, after which its shares fell to less than half the offering price.
Early 2030s: X-energy expects the reactors to begin operating.
Big Picture
The permit places X-energy's helium-cooled, uranium-fueled small modular reactor design at the construction stage in Texas, while no small modular reactor is yet operating in the United States. The project tests whether the smaller design approach can deliver faster, cheaper builds than conventional reactors.
For Texas residents, the project signals future industrial power and heat supply from a new reactor type, though operation is not authorized by this permit. Electricity users may see longer-term effects if small reactors prove cheaper and faster to build than conventional plants.
The takeaway
Construction approval is an early milestone, and the reactors' real test will come when they begin operating in the early 2030s. Readers should watch whether the project meets that timeline and how the safety challenge is resolved.
Further reading
For more on the technology behind this permit, explore Nuclear coverage on Wisevoter.
Source note: This article includes information reported by Utilities Middle East.
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