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Radiant Industries

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Developing portable zero-emission small nuclear microreactors to provide resilient clean power for remote and critical sites

El Segundo, United StatesFounded 2019Defence
Valuation $1–2.5B Last recorded · 2025
Headcount 500–1k Current team size
Total funding $500M–1B Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Radiant Industries and the history behind them.

About Radiant Industries

Radiant Nuclear is an innovative startup focused on revolutionizing the nuclear energy sector by developing compact, efficient nuclear microreactors. The company aims to provide a reliable and sustainable energy solution, particularly for remote locations and military applications. Radiant's primary clients include government agencies, such as the Department of Defense, and industries that require a stable and portable power source.

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Operating in the advanced nuclear energy market, Radiant leverages cutting-edge technology and expertise from veterans of SpaceX and other high-tech industries. The company's flagship product, the Kaleidos microreactor, is designed to be a compact and efficient power generation system that uses a CO2 cycle for energy production. This innovative approach allows for a smaller, more portable reactor that can be deployed in various challenging environments.

Radiant's business model revolves around research and development, followed by the commercialization of its microreactor technology. The company generates revenue through government contracts, such as the $3.8 million award from the Department of Defense's Operational Energy Capability Improvement Fund. This funding supports the development and testing of their turbomachinery and power generation systems. Additionally, Radiant seeks partnerships with private sector companies and investors to further accelerate its growth and market penetration.

In summary, Radiant Nuclear is at the forefront of transforming the nuclear energy industry with its innovative microreactor technology, targeting government and industrial clients in need of reliable, portable power solutions.

Source: Dealroom company data

At a glance

Founded
2019
Headquarters
El Segundo, United States
Sector
Defence
Power Law
Unicorn$1–10B valuation tier

Latest news

Press, funding announcements and product moves mentioning Radiant Industries.

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Investors

29 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed5 investors entered at this stage

Series A2 investors entered at this stage

Series B and later22 investors entered at this stage

Team profiled 11 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 3 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
5 countries with
team presence
🇺🇸 United States94.2%
🇮🇳 India3.9%
🇸🇦 Saudi Arabia0.6%
🇨🇦 Canada0.6%
🇬🇧 United Kingdom0.6%
5 countries shown
Web traffic by country
32K monthly visits
across markets
🇺🇸 United States69.1%
🇬🇧 United Kingdom11.3%
🇨🇦 Canada6.3%
🇮🇳 India3.1%
🇻🇳 Vietnam3.1%
Top 5 markets shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Radiant Industries on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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