Nearly a half-century since the Army last operated a nuclear power plant, the service is aiming to break ground on a micro-reactor on a U.S. base by 2027.

The joint Janus Program seeks to bring new reactor designs to fruition in a bid to add available power at military installations and to enable them to continue operating even if the wider grid goes down. It was announced on Tuesday by Army Secretary Dan Driscoll and Energy Secretary Chris Wright at the Association of the U.S. Army’s conference in Washington, D.C.

There are currently no microreactors operating in the United States. But speaking to reporters on the sidelines, the secretaries and an Army official said they expect to see a small nuclear reactor go critical by July 2026 and construction to start at a stateside base th

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