PIKETON, Ohio — Oklo Inc. and Centrus Energy Corp. have signed multiple definitive, multi-year contracts for nuclear fuel, securing the uranium Oklo needs to power a planned reactor campus in Pike County as deliveries from Centrus’ American Centrifuge Plant are set to begin in 2029.

Under the agreements announced Thursday, Oklo will prepay Centrus for future shipments of high-assay low-enriched uranium, known as HALEU, helping fund construction of new enrichment capacity at the Piketon plant. The contracts include enough fuel to power up to five of Oklo’s Aurora powerhouses for multiple years, according to the companies.

The deal formalizes a letter of intent the two companies signed in June and secures fuel for the first phase of Oklo’s planned 1.2-gigawatt power campus in Ohio, developed in partnership with Meta.

Oklo’s prepayment to Centrus is itself funded by an earlier agreement in which Meta prepaid Oklo for future electricity from the campus, tying the technology company’s demand for power to the fuel purchase needed to generate it, according to the companies.

“Securing fuel is essential to scaling our power business beyond our first reactor in Idaho,” Oklo CEO and co-founder Jacob DeWitte said in a statement. “These agreements support our initial Ohio deployments and provide fuel for future Aurora powerhouses. Meta’s support helps advance fuel procurement for the Ohio campus and our work to deliver new, clean, reliable power to the grid.”

Beyond the Ohio campus, the fuel will also support future Aurora projects and later refueling of Oklo’s first reactor in Idaho, which runs on recovered fuel from the Experimental Breeder Reactor II.

For Centrus, the agreement adds to a growing list of customer commitments as the company ramps up production at Piketon, where it began shipping newly built centrifuges last month as part of its enrichment expansion.

“These definitive agreements demonstrate that Centrus is ideally placed to meet and support the upcoming substantial commercial demand for HALEU,” Centrus President and CEO Amir Vexler said in a statement. “Oklo’s prepayments, which add to the others we have previously received, will help fund our build out as we scale Centrus’ proven American Centrifuge technology and qualified manufacturing processes for commercial production. Together, we are accelerating the restoration of America’s uranium enrichment leadership.”

Centrus said it has now secured $5.4 billion in customer contracts and commitments to purchase enriched uranium from its expanded capacity. The companies said the combined effort — Centrus’ Piketon expansion, Oklo’s reactor buildout and Meta’s power demand — is expected to support thousands of direct and indirect jobs at full buildout and generate new local and state tax revenue.

The information contained in this story was obtained from Oklo Inc. and Centrus Energy Corp.