Metatomic® was founded to tackle the United States’ growing inventory of commercial spent nuclear fuel from light-water power reactors. The nuclear industry’s original vision was to use fuel, recycle it, and responsibly complete the back end of the fuel cycle. Instead, reprocessing has not moved forward in the U.S., and spent fuel continues to accumulate—stored on-site at nuclear plants for the foreseeable future.

The Metatomic® facility is designed to deliver a practical, next-generation solution: transform stored spent fuel into fuel salt for advanced molten salt reactors. This approach converts today’s liability into tomorrow’s energy resource—generating electricity while significantly reducing the long-lived, highly radioactive components of spent fuel. Our processes are engineered to accept and reprocess dry-cask spent fuel on-site with existing nuclear power plants (or in a regional reprocessing facility scenario, from multiple nuclear power plants) and produce reactor-ready fuel salt for deployment in molten salt power plants.

Fueling a new world—by turning spent fuel into clean power.
Metatomic® is built to lead dry spent nuclear fuel processing—supplying high-quality fuel salt for both thermal and fast molten salt reactors. By enabling advanced reactors, we support reliable, carbon-free electricity in the United States and globally, with safety as our non-negotiable standard in every operation. While it is called “spent” because it can no longer power a conventional light-water reactor (pressurized water reactor or boiling water reactor), this material still contains substantial energy value. That remaining value can be unlocked and repurposed into molten salt reactor fuel—helping close the fuel cycle in a way that is both useful and scalable.

LEARN MORE

Stay in the know about the future of nuclear energy.