Radiant

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Radiant

Radiant

Building the world's first mass-produced portable nuclear generators for anywhere power delivery.

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About

Radiant Nuclear, founded in 2020 and headquartered in El Segundo, CA, is building portable nuclear microreactors that can be deployed anywhere without constant refueling. The company has raised $518M across 7 rounds including $300M+ in late 2025 and a $40M Series B led by a16z. With 384 employees, Radiant plans to test its first reactor in 2026 with initial customer deployments in 2028. Lockheed Martin is a strategic investor.

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detected 2026-06-30
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Frequently asked

What does Radiant do?

Radiant Nuclear, founded in 2020 and headquartered in El Segundo, CA, is building portable nuclear microreactors that can be deployed anywhere without constant refueling. The company has raised $518M across 7 rounds including $300M+ in late 2025 and a $40M Series B led by a16z. With 384 employees, Radiant plans to test its first reactor in 2026 with initial customer deployments in 2028. Lockheed Martin is a strategic investor.

How much funding has Radiant raised?

Radiant has raised a total of $518M in funding. The most recent round on record is Series D.

Where is Radiant headquartered?

Radiant is headquartered in El Segundo, United States.

When was Radiant founded?

Radiant was founded in 2020.

What industry does Radiant operate in?

Radiant operates in Nuclear Energy, Defense, Clean Energy, Manufacturing, Energy Technology.

How many employees does Radiant have?

Radiant has approximately 384 people on record.

What is Radiant's valuation?

StartupHub estimates Radiant's effective valuation at $2.0B (range $1.3B to $3.1B, 22% confidence), based on comparable companies in the sector.