TheTechno Optimist.

Xe-100 at Long Mott (Dow Seadrift)X-energy—TRISO-X completes vertical construction of its TX-1 fuel plant in Oak Ridge, sized to fuel up to 11 Xe-100sX-energy—X-energy begins trading on Nasdaq under the ticker XETRISO-X TX-1 fuel plantX-energy—NRC grants TRISO-X the first licence to make HALEU fuel at a Category II plantTRISO-X TX-1 fuel plantX-energy—X-energy starts vertical construction of TX-1, its TRISO fuel plant in Oak RidgeXe-100 at Long Mott (Dow Seadrift)X-energy—X-energy and SGL Carbon expand capacity for nuclear-grade graphite for the Xe-100Cascade Advanced Energy Facility (Energy Northwest)X-energy—Energy Northwest picks Cascade Nuclear Partners (Kiewit, Black & Veatch, Aecon) to design and build the first four Xe-100sXe-100 at Long Mott (Dow Seadrift)X-energy—NRC issues a finding of no significant impact for the Long Mott Xe-100 projectCascade Advanced Energy Facility (Energy Northwest)X-energy—X-energy says Energy Northwest is on track to file its Cascade construction permit application in the first half of 2027Cascade Advanced Energy Facility (Energy Northwest)X-energy—Amazon reveals Cascade, a 12-reactor Xe-100 plant planned near Richland, WashingtonXe-100 at Long Mott (Dow Seadrift)X-energy—X-energy and Centrus sign a HALEU supply agreement for Xe-100 reactors

TRISO-X TX-1 fuel plant

by X-energyUS

Make the pebble fuel X-energy's Xe-100 reactors run on, starting with Dow's Long Mott plant. Without its own licensed HALEU fuel factory, X-energy's reactor order book would have no fuel.

PilotStage 3 of 5

Shell complete (Sept 2026); interior and fuel equipment going in; 40-year NRC licence held.

Updated 13 Feb 2026Checked 11 Oct0 updates this week

Milestones

Next · Interior build-out and fuel equipment installation
  1. Licence application filed with the NRC6 Apr 2022Complete.
  2. Groundbreaking in Oak Ridge (then called TF3)13 Oct 2022Complete.
  3. Vertical construction begins17 Nov 2025Complete.
  4. NRC issues 40-year HALEU fuel licence13 Feb 2026Complete.
  5. Building shell complete24 Sep 2026+3 mooriginally Jun 2026Complete.
  6. Interior build-out and fuel equipment installationNowCurrent milestone.
  7. NRC readiness inspection, then fuel productionTarget 2027+24 mooriginally 2025Not yet reached.

Most important updates

Upcoming

  1. 2027NRC readiness inspection, then fuel production+24 mooriginally 2025 (next)
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