Army Selects Fort Benning for Microreactor Initiative

The U.S. Army chose the Georgia base in August 2026 as a host site for three experimental nuclear microreactors.

Updated on Oct. 20, 2026 in Nuclear

A modular grey steel nuclear microreactor enclosure sits on a concrete pad surrounded by pine trees in Georgia. — The U.S. Army has selected Fort Benning as a host site for three experimental nuclear microreactors to improve energy resilience. AI Illustration. Upload story photo >

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Do you support the installation of nuclear microreactors on military bases to ensure energy security?

In August 2026, the United States Army selected Fort Benning as one of five military installations to host nuclear microreactors under the Janus Program. Radiant Nuclear will supply three 1-megawatt reactors to provide energy to mission-critical base facilities.

Why it matters

The deployment of these microreactors aims to ensure that critical infrastructure at military bases remains fully operational during commercial grid outages. It represents a significant move toward energy resilience for the U.S. military.

Radiant Nuclear plans to utilize TRISO fuel and helium gas cooling for the Kaleidos microreactors, with the first units expected to be operational by 2028. Each 1-megawatt unit is designed for five years of fuel duration.

The players

United States Army

This is the branch of the United States Armed Forces responsible for land-based military operations.

Radiant Nuclear

This company specializes in the development and manufacturing of portable nuclear microreactor technology.

The details

Radiant Nuclear will handle the delivery, installation, operation, and maintenance of the reactors, which will integrate directly into the existing base power grid. To support this scale, the company is constructing the R-50 manufacturing plant in Oak Ridge, Tennessee, at a cost of $280 million.

The U.S. Army selected Fort Benning as a host site in August 2026.
A site visit meeting took place at Fort Benning in October 2026.
The target date for the microreactors to be operational is 2028.

The Big Picture

This installation follows the infrastructure goals established by the Janus Program. The initiative marks a fundamental shift toward decentralized energy sources for military sites.

While the technology is currently focused on military applications, successful deployment could pave the way for wider use in remote commercial or emergency disaster relief scenarios. The R-50 manufacturing plant is designed to eventually reach an annual production capacity of 50 units.

The takeaway

The Army is prioritizing energy independence by integrating self-contained nuclear power at key installations. These modular systems could eventually provide a blueprint for securing essential power in high-demand environments.