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Radiant has closed $165 million in Series C funding led by DCVC to advance mass-produced nuclear microreactors.

PRIVATEJun 03, 2025•12 months ago

Amount Raised

$165 Million

Round Type

SERIES C

El SegundoEnergy

Investors

Pax VenturesHart Beat VenturesGigascale CapitalArk Venture FundAlign VenturesCrossbeam Venture PartnersSgaHanwha Asset Management Venture FundGiant VenturesStep StoneDcvc

Description

Radiant has successfully closed a $165 million Series C funding round to advance its mission of developing mass-produced nuclear microreactors. The round was led by DCVC and includes new investments from various other firms. This funding will support the development of their Kaleidos reactor and related facilities. Radiant is among five companies selected by the U.S

Company Information

Company

Radiant

Location

1921 E. MAPLE AVENUE

El Segundo, California, United States

About

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.

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Funding Insights

Based on industry data
VC-backed spending patterns
VC-backed companies spend 89% more on sales and 100% more on marketing than bootstrapped peers
Tech investment trends
83% of B2B companies plan digital investments, with 79% prioritizing customer experience tech

Fundz is a real-time business intelligence platform powered by agentic AI that proactively delivers personalized daily signals — including funding rounds, executive changes, M&A activity, 13F institutional filings, SEC 8-K events, investor activity, and website modifications — based on each user's watchlist and ICP. A trusted data source at firms such as BlackRock, Oracle, Kleiner Perkins, LinkedIn, HubSpot, and Cloudflare, Fundz democratizes the institutional-grade intelligence that previously required a PitchBook or Bloomberg terminal. Features include FundzWatch™ for automated website change detection, Daily Briefing for AI-powered daily briefings, and unified cross-signal alerts across 200,000+ companies.

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