The New Development

The Department of Energy has formally selected Oklo Inc. for advanced negotiations under its Surplus Plutonium Utilization Program — a federal initiative to convert Cold War-era and weapons-dismantlement plutonium into usable fuel for advanced nuclear reactors.

Oklo was one of five advanced nuclear companies selected for the program.

Shares of Oklo rose more than 6% in Tuesday midday trading following the announcement, according to CNBC.

What This Actually Means

For decades, the U.S. has sat on a surplus plutonium problem with no good answer. Billions spent on storage. Billions more proposed for disposal. The material came from dismantled weapons programs and Cold War production — and it has been a security and cost headache ever since.

This program flips the equation. Instead of burying the problem, the DOE wants to burn it for electricity.

Oklo CEO Jacob DeWitte said, according to Interesting Engineering: "Fuel supply limits remain one of the biggest obstacles facing advanced reactor deployment. This program creates a pathway to use existing surplus material as bridge fuel for advanced reactors to bring more reactors online sooner."

The newcleo Partnership Is the Key Piece

Oklo isn't doing this alone. The Santa Clara company is partnering with newcleo, a European advanced reactor developer, to execute on the DOE program.

Oklo leads U.S. utilization of the surplus material. newcleo supplies fuel development expertise and potential project capital — all subject to final agreements and U.S. security approvals, according to ZeroHedge.

The two companies announced a strategic partnership in October 2025 that included plans for up to $2 billion in investment through a newcleo-affiliated vehicle for advanced fuel fabrication infrastructure inside the United States, according to Interesting Engineering.

newcleo has also begun pre-application talks with the NRC for both a fuel facility and its lead-cooled fast reactor design.

newcleo founder and CEO Stefano Buono said the partnership addresses nuclear liabilities. "The U.S. is taking an important approach to the fuel cycle," Buono said, per Interesting Engineering.

The Supply Chain Angle

CNBC covered the stock move. But the market reaction misses the larger story: fuel supply chain sovereignty. The U.S. advanced reactor sector faces a problem — next-generation reactors require next-generation fuel, and domestic enrichment and fabrication capacity is still scaling up. Surplus plutonium, properly secured and converted, is a bridge fuel solution available now, not in five years.

Coverage from some outlets has focused on opposition from anti-nuclear environmental groups rather than the substance of the program. ZeroHedge noted this selection will "almost certainly draw opposition from Democrats and environmental groups" who have long resisted civilian plutonium use — even as those same politicians push aggressive decarbonization mandates.

A carbon-free energy policy cannot coexist with opposition to converting existing nuclear material into clean electricity.

What's Still Unknown

This is advanced negotiations — NOT a signed contract. Final agreements depend on completing security reviews, regulatory approvals, and documentation on the newcleo investment structure.

The DOE has NOT yet disclosed the names of the other four companies selected for the program.

Oklo has also NOT yet received an NRC operating license for any of its reactor designs. The fuel program is a supply-side win, but it only delivers results when reactors are actually running.

The Broader Context

The U.S. has been paying to store Cold War plutonium for decades. Now five companies — including Oklo — have a shot at converting that liability into an asset.

For consumers, the implications are straightforward: cheaper long-term energy, reduced taxpayer spending on indefinite plutonium storage, and more domestic energy production independent of foreign uranium suppliers or Russian enrichment capacity.

The advanced reactor buildout is accelerating. Fuel supply was always going to be the choke point. The DOE is beginning to clear it.