About
Radiant develops and deploys Kaleidos, a portable nuclear microreactor designed to replace diesel generators. This compact, mass-producible unit provides clean electricity and heat for remote villages, hospitals, datacenters, and military installations, offering resilient power with zero on-site water use and a 20-year product lifetime. Kaleidos can be delivered by truck or aircraft and is refueled off-site, eliminating nuclear waste at the customer's location.
Key facts
At-a-glance profile data
- Website
- radiantnuclear.com
- Headquarters
- El Segundo, United States
- Founded
- 2020
- Employees
- 384
- Total funding
- $518M (Series D)
- Business model
- B2B
Tech stack
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Frequently asked
How much funding has Radiant raised?
Radiant has raised a total of $518M in funding. The most recent round on record is Series D.
How many employees does Radiant have?
Radiant has approximately 384 people on record.

