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// DOSSIER — us-army-project-janus-nuclear-microreactors-domestic-bases
US Army Announces Project Janus to Deploy Nuclear Microreactors on Domestic Bases
REL_TIME: 05 Sep 2026 22:12Z · LANG: EN
The US Army has launched the Janus program, committing up to $2.2 billion across five developers to deploy up to 20 nuclear microreactors across domestic military installations starting in 2028. The initiative aims to guarantee energy resilience and independent baseline power for critical military operations in the face of vulnerable commercial grids and fuel supply chain vulnerabilities. Participating vendors include Radiant Industries, Westinghouse Government Services, BWXT Advanced Technologies, General Atomics Electromagnetic Systems, and Antares Nuclear, with individual awards reaching up to $750 million.
// Background
Military installations have traditionally relied on civilian power grids and diesel generators, facing severe logistical and vulnerability hurdles during extended outages. The Janus program—following previous Defense Department efforts like Project Pele—seeks to leverage factory-built, transportable microreactors that can run autonomously for years, while bypassing cumbersome commercial nuclear bureaucratic hurdles through internal military regulation.
// Key Developments
- The Janus program aims to have its first microreactor up and running by the fall of 2028.
- Radiant Industries secured a contract worth up to $750 million to deploy 15 Kaleidos microreactors, starting with three units at Fort Benning, Georgia.
- The reactors will be regulated directly by the Army rather than the Nuclear Regulatory Commission, though adherence to environmental laws like NEPA remains mandatory.
- The initial 20 reactors will use HALEU fuel, presenting a hurdle due to limited national supply.
- Program officials mandate that all radiological material must be removed from installation sites within two years of operation ending, with plans to transfer waste to Department of Energy facilities.
// Timeline
-
NANO Nuclear acquires KRONOS technology from Ultra Safe Nuclear Corp for $8.5 million.
-
The US Army formally announces the Janus Program, authorizing up to $2.2 billion across five companies for microreactor deployment.
-
Details emerge regarding Radiant Industries' $750 million contract for 15 Kaleidos microreactors.
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Target schedule for the deployment and operation of the first contractor-owned microreactors across initial domestic Army bases.
// Perspectives
[US Army / Pentagon]
Supportive; views microreactors as essential for ensuring uninterrupted baseline power and sovereignty against potential cyber, kinetic, or grid disruptions.
[Nuclear Industry Vendors (Radiant, NANO Nuclear, etc.)]
Enthusiastic; sees military contracts as a vital catalyst to scale factory-built designs, secure early customers, and bridge the gap to commercial data center markets.
[Critics and External Observers]
Cautious; raises concerns regarding target vulnerability, sabotage risks during active conflicts, waste management complexities, and constrained HALEU fuel supplies.
// Quotes
“We are building the energy resilience necessary to project combat power globally, without relying on potentially vulnerable external grids.”
“Unlike in prior conflicts, we now know that our domestic electric grid is potentially at risk in a conflict.”
“The Janus Program will be a complete success when and only when we have assisted multiple nuclear companies in developing truly reliable and affordable nuclear microreactors which they can sell to other buyers beyond just the military.”
