TRISO-X Receives NRC Special Nuclear Material License for Advanced Fuel Fabrication Facility

The license authorizes TRISO-X, a wholly owned subsidiary of X-energy, to commercially produce nuclear fuel for advanced reactors.

TRISO-X submitted the initial license application for a fuel fabrication facility in 2022. In September 2025, the NRC issued a draft environmental impact statement for public comment, finding no significant impact for the project. The license was approved on February 13, three months ahead of schedule.

Building construction on TX-1 began in November 2025 at the 110-acre TRISO-X Campus in Oak Ridge, part of X-energy's participation in the U.S. Department of Energy's Advanced Reactor Demonstration Program (ARDP).

ARDP funding provides up to 50% cost sharing with X-energy for the Xe-100 Advanced Reactor Demonstration Project, including construction of TX-1.

X-energy predicts that the 215,000-square-foot facility will employ around 500 full time staff and can produce 700,000 of its proprietary TRISO-X fuel "pebbles" per year - enough fuel to sustain 11 Xe-100 reactors.