𝐓𝐡𝐞 𝐉𝐚𝐧𝐮𝐬 𝐩𝐫𝐨𝐠𝐫𝐚𝐦 - 𝐦𝐢𝐜𝐫𝐨𝐫𝐞𝐚𝐜𝐭𝐨𝐫𝐬

The U.S. Army on Tuesday 14 October 2025 unveiled the Janus Program, a more than six year effort by the Army and the Pentagon’s Defense Innovation Unit with the goal of developing and constructing hundreds of state-of-the-art small nuclear reactors to power military bases across the United States, according to the Wall Street Journal.

The reactors, dubbed microreactors by the Army, will generate less than 20 megawatts of electricity, enough to power a small town or base, and will be small enough to be transported by either ship or aircraft to remote military locations overseas, such as islands in the Pacific.
Secretary of the Army Daniel P. Driscoll stated that they hope to have the first reactors operational at bases across the country by September 2028.

𝐓𝐡𝐞 𝐞𝐱𝐞𝐜𝐮𝐭𝐢𝐯𝐞 𝐨𝐫𝐝𝐞𝐫 𝐛𝐲 𝐏𝐫𝐞𝐬𝐢𝐝𝐞𝐧𝐭 𝐓𝐫𝐮𝐦𝐩

Executive Order on Promoting Small Modular Reactors for National Defense and Space Exploration
January 21, 2021

June 29, 2017, I announced an initiative to revive and expand the nuclear energy sector and directed a complete review of United States nuclear energy policy to help find new ways to revitalize this crucial energy resource.

On July 12, 2019, I signed a Presidential Memorandum entitled “The Effect of Uranium Imports on the National Security and Establishment of the United States Nuclear Fuel Working Group,” with the goal of examining the current state of domestic nuclear fuel production and reinvigorating the nuclear fuel supply chain, consistent with United States national security and nonproliferation goals.

On August 20, 2019, I signed National Security Presidential Memorandum-20, entitled “Launch of Spacecraft Containing Space Nuclear Systems,” calling for development and use of space nuclear systems to enable or enhance space exploration and operational capabilities.
Kagan Dunlap reports