Weapons-grade plutonium can fuel nuclear reactors known as mixed oxide reactors, but none of these exist in the U.S.

This choice is not even a close call.

The Trump administration is reportedly in talks with five companies to provide old plutonium to convert into fuel for future ...

The Energy Department may allow up to five companies to use its surplus plutonium — which it has historically been used in ...

For years, the federal government has been working on turning old, unexploded warheads left over from the Cold War into a ...

Oklo is one of five companies selected for advanced negotiations under the Energy Department’s Surplus Plutonium Utilization ...

Surplus plutonium fuel conversion is now a central pillar of the United States strategy to secure a domestic energy future. On May 26, 2026, the U.S.

Multi-day fast-spectrum reactor experiments at the U.S. Department of Energy’s National Criticality Experiments Research Center generate modern benchmark data. The data supports Oklo’s ...

Companies say it’s a better way to dispose of the Cold War-era material — and fix a shortage of nuclear fuel. But the plan ...