RadWaste & Materials Monitor Vol. 18 No. 36
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RadWaste & Materials Monitor
Article 12 of 13
September 26, 2025

Deep Fission considers 3 states for underground SMRs

By ExchangeMonitor

Deep Fission has selected sites in Kansas, Texas and Utah as potential locations for its underground nuclear reactors.

The Berkeley, Calif. based advanced nuclear technology company has signed letters of intent with partners at each location to pursue joint development projects, according to its Sept. 18 press release.

Specific locations of deployment in each state were not provided in the release.

“We’re proud to collaborate with our partners in Texas, Utah, and Kansas”, Co-Founder and CEO of Deep Fission Elizabeth Muller said in the release. “Together, we’re laying the groundwork for the next era of nuclear energy in the United States. These projects reflect the urgent demand for reliable, carbon-free baseload power, and we are excited to be part of the solution to fill that need.”

Deep Fission has developed the Deep Fission Borehole Reactor-1(DFBR-1) that can be placed one mile underground in a 30-inch borehole. The DFBR-1 a 15-megawatt pressurized water reactor.

The reactors are modular and scalable, with the ability to scale from 15-megawatts to 1,500 megawatts, the company said.

Deep Fission is one of 10 companies that have been selected for the Department of Energy’s reactor pilot program which plans to reach criticality by July 4, 2026.

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