# Radiant

> Developer of portable micro-nuclear reactors for remote power and defense applications.

## Why it is interesting

Radiant is betting liquid-metal-cooled microreactors can deliver megawatt-scale portable power faster than traditional nuclear — backed by a16z American Dynamism, Founders Fund, and a $300M Series D at $1.8B.

## Profile

- **Stage:** growth
- **Status:** private
- **Industries:** deep-tech, defense-tech, climate-tech
- **Coverage:** full
- **Last updated:** 2026-07-24

## Key facts

- Series D (Dec 2025): $300M at $1.8B led by Draper Associates; Founders Fund among participants (Radiant press)
- Series C (Oct 2024): $100M led by DCVC; a16z, USV, Founders Fund continued (Radiant press)
- Series B (Apr 2023): $40M led by a16z American Dynamism; Founders Fund, Cantos participated (Radiant blog)
- Co-investors not in VCT directory: DCVC, Draper Associates

## Investors in our directory

- https://venturecapitaltracker.com/fund/andreessen-horowitz
- https://venturecapitaltracker.com/fund/founders-fund
- https://venturecapitaltracker.com/fund/union-square-ventures
- https://venturecapitaltracker.com/fund/cantos

## Related articles

- https://venturecapitaltracker.com/2026-a16z-hot-portfolio-companies

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Source: https://venturecapitaltracker.com/startup/radiant