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U.S. Invites Energy Firms to Seek Surplus Weapons Plutonium for Reactor Fuel

A new Department of Energy solicitation would make roughly 19–20 tonnes from Cold War stockpiles available for conversion to civilian fuel.

Overview

  • The Department of Energy published an application on Tuesday that allows nuclear companies to request access to surplus weapons‑grade plutonium for use as reactor fuel, according to Financial Times.
  • Reports indicate the program envisions making on the order of 19–20 tonnes available from decommissioned warheads, aligning with figures previously reported by Reuters.
  • Oklo Inc. and Newcleo are identified in reporting as likely early applicants to use the material in advanced reactor designs.
  • Coverage frames the move as part of a broader effort to lessen U.S. exposure to Russian‑linked uranium supply chains.
  • A prior U.S. attempt to convert weapons plutonium for civilian use was canceled in 2018 after costs surged, underscoring the economic and technical hurdles that could challenge this proposal.