The US Army is betting big on small nuclear reactors. The service branch announced plans to deploy microreactors at five military bases through the newly unveiled Janus Program, committing up to $2.2 billion in funding over a five-year period from fiscal year 2027 through 2031.

Five companies have been selected to build the reactors, each paired with a specific installation. The first unit is expected to go live by September 30, 2028.

Five companies, five bases

The Army, working in partnership with the Defense Innovation Unit (DIU), chose a diverse roster of nuclear firms for the project. Antares Nuclear will build at Fort Bragg in North Carolina. BWXT Advanced Technologies got the nod for Fort Campbell in Kentucky. General Atomics is heading to Fort Hood in Texas. Radiant Industries will set up at Fort Benning in Georgia. And Westinghouse will deploy at Fort Drum in New York.

The contracts are structured under Other Transaction Authority, a procurement mechanism that lets the Pentagon move faster than traditional acquisition channels allow.