Five simultaneous first-of-a-kind nuclear builds, and the government isn’t holding the construction risk on any of them.
The Army announced the Janus Program awards on August 26: up to $2.2 billion combined across fiscal 2027 through 2031, spread over five vendors at five installations. Antares Nuclear goes to Fort Bragg, BWXT Advanced Technologies to Fort Campbell, General Atomics Electromagnetic Systems to Fort Hood, Radiant Industries to Fort Benning, and Westinghouse Government Services to Fort Drum.
Contractor-owned, contractor-operated
The reactors will be owned and operated by the vendors, not the Army. Payments are milestone-based, so money moves only after technical goals are hit, and each vendor is putting in significant capital of its own.
That structure is the story. On a traditional federal build the government carries schedule and cost risk and the contractor carries performance risk. Here the vendor carries all three, and gets paid for power. It looks less like a construction contract than a power purchase agreement with a build attached.
The dates are aggressive
First reactor operating by September 2028. That’s about two years from award, on installations, through NRC or DOE authorization pathways, with designs that have not been built before.
“We are seeking not just reactors capable of turning on for a brief demonstration, but rather systems able to deliver power with high-capacity factors for years of operation,” said Dr. Jeff Waksman, principal deputy assistant secretary of the Army for installations, energy and environment.
The Army expects more than 20 microreactors across its installations eventually. The awards came through Other Transactions Authority agreements after a Defense Innovation Unit solicitation and a technical decision board drawing on DOE and the national labs.
Who’s watching
Data center owners, mostly. The same problem the Army has, firm power at a site the grid can’t reach fast enough, is the problem hyperscalers have been describing all year. Five vendors carrying their own construction risk on federal land is the cleanest available test of whether the microreactor cost curve is real.
If any of the five delivers on schedule and near budget, the private-sector version follows immediately. If none do, the whole category gets repriced.
Public owners are testing risk transfer on much smaller assets as well. Maricopa County is keeping title to a 1928 landmark and leasing it out for a $135 million, 255-key hotel conversion, which moves the capital and operating obligation to the private team without disposing of the building.