Radiant
Updated: December 03, 2025
CEO - Doug Bernauer
Country: USA | Funding: $218.8M (+)
Founded: 2019
Website: https://www.radiantnuclear.com/
Kaleidos produces a portable nuclear microreactor that replaces diesel generators. It is a compact nuclear reactor (1 MW) with all the necessary equipment to generate electricity for remote villages and facilities, as well as backup power for hospitals and data centers. It requires no on-site water consumption thanks to the use of fans for air cooling. Helium conducts heat away from the core and does not become radioactive, eliminating the impact of leaks. Meltdown-resistant TRISO fuel, consisting of uranium particles coated with a ceramic coating, has been used in more than 30 grid-scale reactors since the 1960s. The reactor is assembled and fueled at the factory and delivered by truck or plane. Kaleidos mass-produces microreactors for US military bases.
Founded: 2019
Website: https://www.radiantnuclear.com/
Kaleidos produces a portable nuclear microreactor that replaces diesel generators. It is a compact nuclear reactor (1 MW) with all the necessary equipment to generate electricity for remote villages and facilities, as well as backup power for hospitals and data centers. It requires no on-site water consumption thanks to the use of fans for air cooling. Helium conducts heat away from the core and does not become radioactive, eliminating the impact of leaks. Meltdown-resistant TRISO fuel, consisting of uranium particles coated with a ceramic coating, has been used in more than 30 grid-scale reactors since the 1960s. The reactor is assembled and fueled at the factory and delivered by truck or plane. Kaleidos mass-produces microreactors for US military bases.
