US Navy Selects Radiant Kaleidos Microreactor to Power Naval Weapons Station Crane

The US Navy selected Radiant Industries to design, build and deliver a prototype Kaleidos microreactor power plant at Naval Weapons Station Crane, Indiana, on October 20, 2026. The project falls under the US Army's existing Janus programme rather than a separate Navy reactor procurement and is intended to supply grid-independent electricity for critical installation activities. Kaleidos is a transportable, helium-cooled, high-temperature reactor designed to generate approximately one megawatt of electrical power using TRISO fuel. A demonstration unit is undergoing testing at Idaho National Laboratory, while the Crane project's cost, licensing pathway and operating date have not been disclosed.