# X-energy starts vertical construction of TX-1, its TRISO fuel plant in Oak Ridge

Canonical page: https://technooptimist.io/stories/x-energy-starts-vertical-construction-of-tx-1-its-triso-fuel-plant-in-38c28448
Date: 17 Nov 2025
About: [X-energy](https://technooptimist.io/companies/x-energy.md) · [TRISO-X TX-1 fuel plant](https://technooptimist.io/energy/tx-1-fuel-facility.md)
Original source: https://x-energy.com/news/x-energy-begins-vertical-construction-for-first-in-the-nation-advanced-nuclear-fuel-fabrication-facility/

TRISO-X began building the structure of TX-1, a 214,812 sq ft plant to make 5 tonnes of uranium a year into about 700,000 TRISO pebbles, enough for up to 11 Xe-100 reactors. Clark Construction holds a $48.2 million contract for the core and shell, due mid-2026, and TRISO-X then expected NRC approval by May 2026.

## Key facts

- Capacity: 5 tU or about 700,000 pebbles a year.
- Clark Construction: $48.2M for core and shell.
- First customer: Dow's four-unit Xe-100 plant at Seadrift, Texas.

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