The DOME facility, a reactor testing ground, was established using components from the decommissioned Experimental Breeder Reactor-II. It focuses on testing demonstration reactors up to 20 MWt utilizing fuels enriched to under 20 percent uranium-235. In 2023, three companies—Radiant, Westinghouse, and Ultra Safe Nuclear—received funding for engineering and design work for experiments at DOME. By 2024, Radiant and Westinghouse earned further Department of Energy support for their designs.
Applications for using DOME opened in 2025. Radiant was selected to test its Kaleidos Demonstration Reactor starting in 2026, while Westinghouse was conditionally selected to use a slot in 2027, but later withdrew. Antares opted not to pursue DOME and instead focused on its own facility, MFC-793.
This left the second testing slot at DOME available, which has now been filled by Deployable Energy. The company aims to test its 1-MWe Nuclear Unity Battery design, assessing its performance, safety, and operational procedures. However, Deployable must meet specific milestones to retain its testing time. A competitive application process for future projects at DOME will be held in 2027.
