Clark Construction continues TX-1 build as TRISO-X completes Oak Ridge structure
TRISO-X said on 24 September 2026 that vertical construction of its 214,000-square-foot TX-1 nuclear fuel fabrication facility in Oak Ridge, Tennessee, is complete, with Clark Construction Group continuing as contractor.
Event / data period: 2026-09-24
Published: · Updated:
TRISO-X, a subsidiary of X-energy, announced on 24 September 2026 that vertical construction is complete at TX-1, its advanced nuclear fuel fabrication facility in Oak Ridge, Tennessee. The milestone completes the primary building structure of the 214,000-square-foot facility. The project advances to interior buildout, installation of fuel fabrication equipment and continued construction of supporting facilities.
Clark Construction Group continues as construction contractor. It is leading interior buildout of the facility’s process equipment and administration building, installation of the fuel fabrication equipment and construction of an adjacent graphite matrix powder building. Once operational, TX-1 is expected to produce approximately 700,000 TRISO-X fuel pebbles a year, equivalent to 5 metric tons of uranium, with capacity to provide fuel for up to 11 Xe-100 reactors.
TRISO-X said the U.S. Nuclear Regulatory Commission granted the facility a 40-year Special Nuclear Material License earlier in 2026. TX-1 is being developed initially to support X-energy’s proposed Xe-100 deployment at Dow Inc.’s UCC Seadrift Operations manufacturing site in Texas. The release gave no contract value or operating date.
Data
TX-1 fuel fabrication facility: key figures
Size and expected output of TX-1 as stated by TRISO-X on 24 September 2026.
- Facility size
- 214,000 square feet
- 2026-09-24 · Observed
- Expected annual output of fuel pebbles
- ≈700,000 fuel pebbles per year
- 2026-09-24 · Target
- Uranium equivalent of expected annual output
- ≈5 metric tons of uranium per year
- 2026-09-24 · Target
- Xe-100 reactors the facility could fuel
- ≤11 Xe-100 reactors
- 2026-09-24 · Target
Methodology
Floor area is the stated size of the facility. Output and reactor-supply figures are expected capacity once TX-1 is operational, as stated by TRISO-X, not current production. The release gave no contract value.
Updated:
Subjects and places
Subject proposals
- Nuclear powerSuggested
- Subject suggested from the title or summary: nuclear fuelx-energy.com ↗
- Construction and propertySuggested
- Subject suggested from the title or summary: Constructionx-energy.com ↗
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- United States · Place role: Coverage · Place type: Country or area · Location precision: RegionalEvidence
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