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4w ago

U.S. Names Five Firms, Including Oklo, to Negotiate Use of Cold War Plutonium as Reactor Fuel

The Energy Department says the plan could unlock private capital and fuel for next‑generation reactors but must clear strict security, regulatory and oversight hurdles.

Robotic arm handling drums of surplus plutonium.
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Overview

  • The Energy Department on Tuesday selected Oklo, Exodys Energy, SHINE Technologies, Standard Nuclear and Flibe Energy for advanced negotiations under its Surplus Plutonium Utilization Program to convert about 20 metric tonnes of dismantled Cold War plutonium into reactor fuel.
  • Oklo reiterated plans to work with European firm newcleo on fuel development and financing, with newcleo signalling a contingent investment framework of up to $2 billion subject to final agreements and approvals.
  • Those negotiations do not guarantee transfers or use of material because any deal would require National Nuclear Security Administration, Nuclear Regulatory Commission and DOE approvals plus strict material accountability and security safeguards.
  • Democratic lawmakers, nuclear experts and NGOs warn the proposal raises proliferation and security risks, noting the targeted stockpile is weapons‑usable and has previously led U.S. agencies to pursue disposal rather than commercial reuse.
  • Markets reacted quickly to the announcement and the move revives governance questions tied to past failed MOX efforts, potential new waste streams and how privately financed fuel projects would affect reactor deployment and U.S. nonproliferation policy.