Stories of Technology, Innovation, & Entrepreneurship in the Southeast

August 17, 2025 | Tom Ballard

X-energy selects Clark Construction Group for its TX-1 facility

It's is the latest news from the nuclear-intense community of Oak Ridge.

X-energy Reactor Company LLC and its wholly-owned subsidiary, TRISO-X LLC, have announced the selection of Clark Construction Group to complete the building construction phase of its first-in-the-nation advanced nuclear fuel fabrication facility in Oak Ridge.

TX-1, as the facility is known, is the first of two planned facilities at X-energy’s site in the community that will manufacture X-energy’s proprietary tristructural-isotropic fuel for X-energy’s first commercial deployment of the Xe-100 in partnership with the Dow Chemical Company on the Texas Gulf Coast, as well as subsequent deployments.

The $48.2 million award is part of X-energy’s participation in the U.S. Department of Energy’s Advanced Reactor Demonstration Program, and encompasses the Phase 2A of the facility construction, including the completion of the core and shell of the 214,812 square foot facility. Construction on this next phase is expected to begin in September, following the completion of site preparation work. In parallel, X-energy has also received approval from the Department of Energy to authorize an additional approximately $30 million for early procurement of critical long-lead equipment and materials to support the successful delivery of subsequent construction phases, and ensure adherence to the overall project schedule.

“This milestone marks another step forward in ensuring a secure, domestic supply of fuel for the next generation of nuclear reactors,” said Joel Duling, President of TRISO-X. “TX-1 will be the first facility of its kind in the nation, addressing a critical gap in the current U.S. nuclear fuel cycle, and bolstering U.S. energy independence with American technology and innovation.”



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