Oklo Secures Key DOE Safety Approval, Acquires ARMEC, and Solidifies Fuel Supply Chain with Centrus and Standard Nuclear Partnerships

Oklo Secures Key DOE Safety Approval, Acquires ARMEC, and Solidifies Fuel Supply Chain with Centrus and Standard Nuclear Partnerships

Advanced fission developer Oklo Inc. (NYSE: OKLO) has rapidly accelerated its commercialization pathway in June 2026, combining regulatory approvals and strategic acquisitions with major fuel supply and recycling agreements to build out a vertically integrated model.¹ With a market capitalization of $10.64 billion and a robust liquid position of $1.59 billion in cash (against just $2.6 million in total debt as of March 31, 2026), the pre-revenue company is aggressively securing both its fuel supply chain and future commercial offtake pathways.

Fuel Supply Certainty: The Centrus Energy HALEU Agreement

On June 18, 2026, Oklo and Centrus Energy Corp. (NYSE: LEU) announced a non-binding Letter of Intent (LOI) for Centrus to supply domestically enriched high-assay low-enriched uranium (HALEU) from its American Centrifuge Plant in Piketon, Ohio. The agreement addresses one of the most critical bottlenecks in the advanced nuclear sector—the lack of domestically sourced HALEU.

Under the LOI, Centrus will supply enough HALEU to power up to five of Oklo’s fast-fission Aurora powerhouses for multiple years, with deliveries scheduled to begin in 2029. The fuel will support Oklo's planned 1.2 GW Clean Energy Campus in Southern Ohio. This agreement builds on Oklo's January 2026 power purchase agreement with Meta Platforms Meta and Oklo Partner on 1.2 GW SMR Power Campus in Southern Ohio, which included prepayments to advance project certainty. Similarly, the Centrus LOI anticipates potential prepayments from Oklo to support fuel supply buildout.

To support the physical deployment, Oklo has also entered into an MOU with Kiewit Nuclear Solutions Co. to coordinate engineering, procurement, and construction (EPC) planning for these initial Aurora deployments.

Fuel Recycling and Plutonium Offtake: The Standard Nuclear Alliance

Further strengthening its fuel-cycle strategy, Oklo signed an MOU on June 16, 2026, with TRISO fuel fabricator Standard Nuclear. This alliance represents Oklo's first third-party offtake pathway for recycled nuclear materials, focusing on the supply of reprocessed uranium and uranium-transuranic material streams from spent nuclear fuel from Oklo’s planned fuel recycling facility in Oak Ridge, Tennessee.

Both Oklo and Standard Nuclear were selected in late May 2026 by the Department of Energy (DOE) for advanced negotiations under the Surplus Plutonium Utilization Program (SPUP) DOE Pivots to Fueling Advanced Reactors with Weapons-Grade Plutonium. Under the new MOU, the companies will explore collaborating on facilities, licensing, packaging, and transportation to convert U.S. surplus plutonium into advanced reactor fuel.

Regulatory and Operational Context

These fuel supply achievements build upon Oklo's prior June 2026 milestones, which included:

1. DOE Safety Approval: Securing a key safety approval from the DOE for the Safety Design Strategy of its Aurora Fuel Fabrication Facility at Idaho National Laboratory (INL).
2. ARMEC Acquisition: Acquiring advanced manufacturing company ARMEC to bring critical nuclear component fabrication in-house.
3. Groves Isotope Test Reactor: Oklo's wholly owned subsidiary, Atomic Alchemy, is targeting zero-power criticality for its Groves Isotope Test Reactor in Lockhart, Texas, before the July 4, 2026 deadline under the DOE's Reactor Pilot Program DOE Reactor Pilot Program Sparks Rapid Success in Race to July 4, 2026 Criticality Deadline.

While Oklo reported a net loss of $33.1 million and $0 in revenue for the quarter ending March 31, 2026, its massive cash reserve allows it to fund these capital-intensive development, manufacturing, and fuel-procurement initiatives as it targets initial commercial reactor deployments.