Radiant Nuclear is redefining advanced nuclear energy through its flagship 1MW portable microreactor, Kaleidos. Designed for military bases, data centers, remote industrial sites, and grid-constrained environments, Kaleidos delivers reliable baseload power for up to 20 years using TRISO fuel and passive helium cooling. Unlike traditional nuclear projects that require decade-long development cycles, Radiant is transforming nuclear into a repeatable, factory-manufactured product that can be deployed by truck or airlift. The company is positioned at the intersection of Defense Technology and AI Infrastructure, where reliable, dispatchable power is becoming the defining constraint of growth.

Radiant stands apart as the clear execution leader in advanced nuclear. The company is on track to become the first commercial reactor design in over 50 years to achieve a fueled test in 2026 at the DOE’s Idaho National Laboratory DOME facility. With binding agreements with the U.S. Department of Defense, including a path to deploy Kaleidos at a military base, Radiant is effectively sold out through 2030 with prepaid deposits across defense and commercial buyers. Equinix has also executed a preorder arrangement for 20 units, signaling strong validation from hyperscale data center operators facing power scarcity.

Backed by Founders Fund, Andreessen Horowitz, Union Square Ventures, DCVC, ARK, Draper Associates, and others, Radiant combines elite capital with SpaceX-grade engineering DNA. Founder and CEO Doug Bernauer, formerly of SpaceX, leads a team with deep regulatory, manufacturing, and nuclear expertise. With manufacturing ramp planned in Oak Ridge, Tennessee, and a targeted 2028 IPO following key Air Force milestones, Radiant represents one of the most compelling risk-adjusted opportunities in advanced nuclear energy.