X-energy

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Xe-100 high-temperature gas-cooled pebble-bed SMR and TRISO fuel.

Editorial profile — compiled by us from public sources.

Founded: 2009
Headquarters: Rockville, MD, US

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Roadmap & milestones

First US reactor cleared via streamlined environmental review

2026-06

X-energy / US NRC

The NRC issued a Finding of No Significant Impact for X-energy's plan to build four 80 MWe Xe-100 reactors at Dow's Seadrift site on the Texas Gulf Coast — the first commercial nuclear project in the NRC's 52-year history cleared through a streamlined environmental assessment rather than a full environmental impact statement. The Amazon-backed developer still faces the separate safety review next.

Press release · 2026-06

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