X-energy and Dow say NRC approved four Xe-100 reactors for Texas chemical site

X-energy and Dow announced on November 9th, 2026 that the NRC approved construction of four Xe-100 reactors at Dow's Seadrift site, with an operating license and Dow's final investment decision still ahead.

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Primary source: TechCrunch

Why it matters

The announcement makes Long Mott a test of whether an advanced reactor can move from an NRC construction permit to a financed build at a U.S. industrial site. Dow still has to make a final investment decision, and X-energy still needs an operating license, so the next evidence will come from capital approval, construction readiness and fuel supply. For founders in regulated hard tech, Long Mott shows a permit arriving while customer financing remains open.

A sprawling refinery with towers and tanks stands behind a dry field and chain-link fence bearing a small “Riv” sign.

X-energy and Dow announced on November 9th, 2026 that the NRC approved construction of four Xe-100 reactors at Dow's Seadrift site, with an operating license and Dow's final investment decision still ahead.

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