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Radiant Nuclear

radiantnuclear.com ↗

PROCESS SCHEMATIC · NUCLEAR / PORTABLE MICROREACTOR LIVE

Founded: 2020
Stage: SERIES D
Raised: $517.6M
HQ: EL SEGUNDO, CA
Layer: MANUFACTURING

1MWe portable helium-cooled microreactor, founded by SpaceX alumni.

Funding history

RoundAmountDateLead

Series A$12.6M2022-03—

Series B$40M2023-04a16z (American Dynamism)

Series C$165M2025-06DCVC

Series D$300M2025-12Draper Associates and Boost VC

Upstream: BWXT fuel

Downstream: DoD

Related: General Matter Standard Nuclear Deep Fission Marathon Fusion

Sources

Radiant raises over $300 million in new funding to mass-produce portable nuclear reactors ↗Radiant to build first microreactor at Tenn. Manhattan Project site - ANS Nuclear Newswire ↗Radiant Secures $100 Million in Series C Funding, Plans Milestone Test at INL's DOME Facility ↗This Former SpaceX Engineer Just Raised $40 Million To Build Portable Nuclear Reactors - Forbes ↗Radiant closes $165 Million Series C with additional funding from Giant Ventures, StepStone, ARK Venture Fund, and others ↗