US Government Engages Startups to Utilize Surplus Plutonium for Nuclear Reactors

US Government Engages Startups to Utilize Surplus Plutonium for Nuclear Reactors

First seen 27 May 2026, 02:41 UTC InterestingengineeringTechcrunchNeimagazineAnsRss.Slashdot+2 83% similarity 42.0

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The U.S. Department of Energy is negotiating with five nuclear startups, including Oklo, to repurpose surplus plutonium from Cold War-era stockpiles into reactor fuel. This initiative aims to convert 34 tons of identified plutonium, previously deemed a long-term waste, into usable energy. Oklo, selected for its advanced reactor technology, plans to collaborate with newcleo to develop fuel fabrication infrastructure. The program is seen as a significant step towards addressing the challenges of nuclear waste management and enhancing domestic fuel supply for advanced reactors. However, concerns about security and the potential risks associated with using plutonium remain prevalent among experts. Energy Secretary Chris Wright, formerly associated with Oklo, has divested his shares to avoid conflicts of interest. The initiative reflects a broader strategy to reduce nuclear liabilities and increase the viability of advanced nuclear technologies.

Key Points: • The U.S. DOE is negotiating with five startups to use surplus Cold War plutonium as reactor fuel. • Oklo and newcleo are leading efforts to convert 34 tons of plutonium into usable energy. • Security concerns persist regarding the repurposing of plutonium originally from nuclear weapons.

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Timeline

2026-05-26
DOE selects five startups for plutonium negotiations
The Department of Energy announced negotiations with Oklo and four other startups to utilize surplus plutonium for advanced nuclear reactors.
Techcrunch
2026-05-26
Oklo shares rise after DOE announcement
Shares of Oklo Inc. increased by over 6% following the announcement of their selection for the Surplus Plutonium Utilization Program.
Interestingengineering
2026-05-26
Energy Secretary comments on Oklo's involvement
Energy Secretary Chris Wright, previously on Oklo's board, confirmed his divestment to avoid conflicts of interest in the negotiations.
Techcrunch

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