The Department of the Air Force (DAF) has moved forward with its Advanced Nuclear Power for Installations (ANPI) initiative, announcing specific company pairings to develop microreactors at three installations.
Radiant Industries will partner with Buckley Space Force Base in Colorado. Radiant is developing Kaleidos, a portable 1 MW helium gas-cooled microreactor using TRISO fuel. Factory-built and transportable by truck or aircraft, the unit requires no on-site water, relying instead on air cooling with fans and passive natural convection. It targets military installations among other resilient power needs. Radiant plans its first demonstration at Idaho National Laboratory's DOME test bed, with criticality planned before July 4th.
Westinghouse will deploy at Malmstrom Air Force Base in Montana. Westinghouse brings decades of nuclear expertise and its eVinci microreactor. This heat-pipe cooled design produces about 5 MW, offering eight-plus years of fuel life with minimal maintenance. Fully factory-assembled and transportable in shipping containers, the unit operates without water cooling and supports remote or edge-of-grid applications while pairing well with renewables.
Antares Nuclear will build at Joint Base San Antonio in Texas. Antares is focused on its R1 microreactor, a sodium heat-pipe cooled system delivering 100 kWe to 1 MWe with over six years between refueling. The modular design emphasizes reliability for defense-critical assets and incorporates high-temperature heat pipes and automated controls. We recently covered Antares and their first of a kind approval from the DOE for their Mark-0 test reactor at Idaho National Lab.
ANPI’s goal is operating at least one advanced nuclear reactor on a DAF installation by 2030 or sooner.
We reported on the ANPI program's launch and the Defense Innovation Unit's selection of eight companies in April 2025, part of a larger Pentagon push for resilient, emissions-free power at military sites. The effort aligns with the Army's related Janus program targeting operational microreactors by 2028.
The initiative remains separate from the standalone microreactor pilot at Eielson Air Force Base in Alaska. With next steps now underway, the DAF is positioning itself to deliver reliable power where it matters most.