Radiant Industries

Private

Radiant Industries develops portable nuclear microreactors designed to replace diesel generators with clean, zero-emissions power. The company's flagship product, Kaleidos, is a 1 MW reactor that fits inside a shipping container. Founded by former SpaceX engineers, Radiant plans to mass-produce microreactors from its factory in Oak Ridge, Tennessee.

Founders Doug Bernauer, Bob Urberger
CEO Doug Bernauer

Company

Founded
2020
Headquarters
El Segundo, United States
Employees
251-500

Financials

Total Funding
$519M
Last Valuation
$1.8B
Sectors
Climate Tech Hardware
www.radiantnuclear.com Twitter Blog

Funding History

5 rounds
Series D Dec 17, 2025
$300M
Draper Associates (Lead) Boost VC (Lead) Founders Fund Chevron Technology Ventures
Series C Nov 14, 2024
$165M
DCVC (Lead) Andreessen Horowitz Union Square Ventures Felicis Ventures Washington Harbour Partners Chevron Technology Ventures Founders Fund Giant Ventures
Series B Apr 24, 2023
$40M
Andreessen Horowitz (Lead) Founders Fund Decisive Point Draper Associates Cantos Ventures Boost VC
Series A Mar 3, 2022
$13M
Union Square Ventures Decisive Point Nucleation Capital Boost VC Cantos Ventures Tribe Capital
Seed Sep 22, 2020
$1M

Funding data is compiled from multiple independent sources including company announcements, press coverage, and regulatory filings. While we strive for accuracy, amounts and dates may reflect reported figures at time of announcement.