Radiant is developing a portable nuclear microreactor intended to provide clean power in remote or off-grid locations. Founded in 2020, the company is based in El Segundo, California, with additional operations in Oak Ridge, Tennessee. Its primary product, the Kaleidos, is a 1 MW helium gas-cooled reactor designed for transportability and extended operational periods.
The Kaleidos microreactor uses TRISO fuel and features a passive cooling system via an air jacket, with a design goal of operating for up to five years without refueling. The company aims to achieve factory production of 50 reactors per year, positioning the technology as a potential replacement for diesel generators in applications requiring reliable, portable power.
Engineering work at Radiant spans several technical domains, including nuclear engineering, reactor design, passive cooling systems, and software engineering. The startup operates in the clean energy and portable power generation sectors.
