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HALEU TRISO fuel productionStandard Nuclear—Standard Nuclear starts producing HALEU TRISO fuel and raises a $140 million Series AHALEU TRISO fuel productionStandard Nuclear—Standard Nuclear lists on the NYSE as STDN after a downsized $150 million IPOHALEU TRISO fuel productionStandard Nuclear—Oklo and Standard Nuclear sign an MOU to turn recycled reactor material into TRISO fuel

HALEU TRISO fuel production

by Standard NuclearUS

Make enough TRISO fuel for the first wave of US microreactors and small reactors. Fuel, not reactor design, is a main bottleneck for these reactors, and few US lines can make TRISO.

PilotStage 3 of 5

Making HALEU TRISO fuel at Oak Ridge (~500 kg/yr); expanding past 2 t/yr; Idaho site built.

Updated 16 Jul 2026Checked 11 Oct0 updates this week

Milestones

Next · Oak Ridge capacity above 2 tonnes a year
  1. Buys Ultra Safe Nuclear's fuel assets out of bankruptcyQ4 2024Complete.
  2. Emerges from stealth with $42MJun 2025Complete.
  3. First company picked for DOE's Fuel Line Pilot ProgramAug 2025Complete.
  4. Construction starts on the Idaho Falls assembly siteOct 2025Complete.
  5. DOE safety-oversight agreement signedDec 2025Complete.
  6. First HALEU arrives; HALEU TRISO production beginsJan 2026Complete.
  7. Lists on the NYSE, raising $150M16 Jul 2026Complete.
  8. Oak Ridge capacity above 2 tonnes a yearNowCurrent milestone.

Most important updates

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