Kaleidos
a Portable Nuclear Microreactor that Replaces Diesel Generators
A compact nuclear reactor with all equipment necessary to generate electricity in a mass producible and easily transportable package
Replacing diesel generators in remote villages and providing resilient backup power for hospitals, datacenters, and military installations
Requiring zero on site water use by leveraging fans for air cooling, Kaleidos can operate anywhere
High speed turbomachinery operates efficiently from 30% to 100% power or 1.2MW electric, enabling resilient microgrids
While generating electricity, Kaleidos also can provide 1.9 MW of thermal power for facility heating or water desalination
Helium gas transfers heat from the core and does not become radioactive, eliminating the impact of leaks
An air jacket cools the core passively through natural convection, simplifying regulatory approval
Meltdown-proof TRISO fuel, ceramic coated uranium particles, have been used in more than 30 grid-scale reactors since the 1960s
Kaleidos are assembled, fueled, and tested in the factory for streamlined deployment
Delivery
Both military and commercial customers can rapidly replace their diesel generators
The unit is delivered via truck on highway routes
Or delivery can be expedited by aircraft
The container can be separated for flexibility in transport and maintenance
Turbomachinery and Cooling
Reactor and Shielding
Turbomachinery and Cooling
Reactor and Shielding
Kaleidos eliminates expensive and dirty diesel fuel, unreliable power grids, and long deployment timelines
Power
Over 110 times the energy density of existing diesel systems
No site excavation is required, Kaleidos is lowered from the truck and achieves full power the next day
Clean electricity and heat continuously adjust to match power demand during the day
…and night, enhancing existing renewables infrastructure, such as solar or wind power
Hundreds of units can autonomously operate with data streaming back to Radiant’s centralized 24/7 fleet monitoring system tracking the health of each reactor
Refueling
No nuclear waste or infrastructure remain on the site
After 5 or more years of operation the fuel is depleted, and the entire container can be shipped back for refueling
Back at the factory, Kaleidos can be fueled a total of 4 times for a 20-year product lifetime
Customers can purchase through either Power Purchase Agreements (PPAs) or direct unit sales
2026
Kaleidos will be the first new commercial reactor design to achieve a fueled test in over 50 years