Radiant Nuclear: Mobile Nuclear Power Plants from 2028
Radiant Nuclear, a US-based startup, has secured major contracts for its portable nuclear reactors. The company, headquartered in El Segundo, California, will supply its technology to a US military base and data centre operator Equinix. Production is set to begin by 2028, backed by over $500 million in funding.
The reactors, named Kaleidos microreactors, are designed to be compact and highly mobile. Each unit fits inside a standard semi-trailer and can start producing power within a day of delivery. Once operational, they generate 1 megawatt of electricity, enough to support remote or critical facilities.
Safety and efficiency are central to the design. The reactors use TRISO fuel technology, known for its durability, along with helium cooling to prevent overheating. Fuel replacement is required only once every five years, reducing maintenance needs. Every reactor comes with a digital twin—a virtual replica that allows real-time monitoring and performance adjustments. This feature ensures adaptive operation and quick responses to changing conditions. The company’s recent deals include supplying reactors to a US military installation and Equinix, a global data centre provider. These contracts mark a significant step toward commercial deployment of the technology.
With production scheduled for 2028, Radiant Nuclear’s reactors aim to provide reliable, on-demand power for defence and commercial sectors. The combination of mobility, long-lasting fuel, and advanced monitoring positions the technology as a potential solution for off-grid energy needs.
