The Oklo–Centrus HALEU contracts announced on Nov. 12, 2026, are a milestone for advanced nuclear fuel supply: definitive, multi-year, and tied to a specific reactor deployment pipeline. But the announcement leaves important commercial questions unanswered, and those gaps matter for anyone tracking HALEU market formation.
What we know
Oklo signed multiple definitive, multi-year contracts with Centrus Energy Corp. for HALEU, formalizing a June 2026 letter of intent. The volume is enough to support up to five Aurora powerhouses for multiple years. Deliveries from Centrus's American Centrifuge Plant in Pike County, Ohio, are scheduled to begin in 2029. Oklo will make prepayments for future deliveries to support construction of new U.S. enrichment capacity.
Centrus said it has secured $5.4 billion in customer contracts and commitments to purchase LEU and HALEU from the new capacity. That figure spans multiple customers and is not identified as the value of the Oklo agreements alone.
What we don't know
The release does not state a contract price. Specific fuel volumes and the amount of Oklo's prepayments were also not disclosed. Those omissions are common in commercial nuclear fuel contracts, but they limit the market's ability to benchmark HALEU pricing or assess how much of Centrus's backlog is attributable to Oklo.
Prepayment risk allocation
Oklo's prepayments shift part of the capital burden of enrichment expansion onto the reactor developer — and, indirectly, onto its corporate offtaker. Meta's previously announced prepayment for future Oklo power production supports the HALEU purchase for the planned 1.2 GW Ohio campus. That chain of prepayments — Meta to Oklo, Oklo to Centrus — is innovative but concentrates risk if project schedules slip.
'Oklo's prepayments add to others received and help fund Centrus's buildout,' said Centrus CEO Amir Vexler.
Market implications
For HALEU market watchers, the deal establishes a template: customer prepayments financing enrichment capacity, with fuel deliveries years later. If more reactor developers follow Oklo's lead, Centrus and other enrichers could accelerate capacity additions without waiting for government appropriations. But the lack of disclosed pricing makes it hard to tell whether HALEU is being priced at a premium that supports new build, or at a level that shifts risk to buyers.
The contracts also connect Centrus's Piketon expansion, Oklo's Aurora powerhouses, and Meta's Ohio operations — a three-party alignment that could become a model for future advanced nuclear projects. Whether it is replicable will depend on terms the public cannot yet see.
This article was assisted by AI analysis. Please refer to the original source for official information.