Advanced nuclear developer
Appears in 3 stories · Last updated Nov 10, 2026
Design approved for this site; preparing an operating license application
The Nuclear Regulatory Commission issued a construction permit on November 9 for Long Mott Generating Station: four Xe-100 reactors on Dow's Seadrift chemical complex in Calhoun County, Texas. It is the agency's first construction permit for a high-temperature gas-cooled reactor in nearly 60 years, and its first for an advanced reactor built to serve a factory rather than a grid.
Updated Yesterday
As of May 2026: Publicly traded on Nasdaq as XE since April 24, 2026
No US utility has ordered a newly designed commercial reactor and seen it come online since the 1970s. On April 24, 2026, the first company trying to break that drought rang the Nasdaq bell. X-energy priced its IPO at $23 a share ($4 above its marketed range) and raised $1.02 billion, the largest US nuclear public offering in years. Shares closed their first day up 27%, giving the company a market valuation of roughly $11.9 billion. The offering was oversubscribed more than 15 times.
Updated May 31
As of May 2026: Building first commercial advanced reactor deployment at Dow's Seadrift plant
Texas has opened applications for a $350 million fund to jumpstart advanced nuclear reactor construction — the largest state-level investment of its kind. The Texas Advanced Nuclear Energy Office, created by legislation that Governor Greg Abbott signed in June 2025, is accepting proposals from companies to build reactors, manufacture components, or rebuild the fuel supply chain. Only two state projects currently meet the fund's requirement of having a construction permit application filed with federal regulators.
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