Radiant

📍 El Segundo, United States🗓 Founded 2020👥 446 employees💰 Last funded Jan 2026
Nuclear Electric Power Generation🌐 radiantnuclear.com
Website LinkedIn
Radiant is building the world’s first mass-produced portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1 MW failsafe microreactor that can be transported anywhere power is needed. Founded in 2020, Radiant plans to test its first reactor in 2026, with initial customer deployments beginning in 2028.
9
Total investors
0
Early stage
6
Mid stage
3
Late stage
2020
Founded

Investors

9 investors
All
Early stage
Mid stage
Late stage
Investor geography3 countries
United States
7
Greece
1
United Kingdom
1
Investor activity2023–2026 · investors recorded per year
20231202432025420261
Recent (last 2y)Earlier
Frequently asked questions
Who invested in Radiant?
Radiant has 9 investors on record on gritt.io, 6 mid-stage and 3 late-stage investors.
When did Radiant last raise funding?
The most recent investment in Radiant recorded on gritt.io was in January 2026.
When was Radiant founded?
Radiant was founded in 2020.
What industry is Radiant in?
Radiant operates in Nuclear Electric Power Generation. Find similar Nuclear Electric Power Generation investors on gritt.io.
Where is Radiant based?
Radiant is headquartered in El Segundo, United States.