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Radiant

Privately Held
radiantnuclear.com
Oil & Energy400+ employeesFounded 2020🇺🇸 United States

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.

Founded
2020
Employees
400+
Industry
Oil & Energy
Company type
Privately Held
Headquarters
🇺🇸El Segundo, California
Specialties
Oil & EnergyMilitaryEnergy & UtilitiesHealthcare
0 / 1
Active markets
Russia
0
New markets
Medium
Confidence
mostly early signals
0%
Momentum
vs prior period
12 / 100
Expansion Score
Early
Stages1Exploring
No signals · Last 90 days

Global expansion

Live
Russia
Stages
ExploringInvestingLandingOperating

Market entry timeline

The order this company entered each market — oldest to newest

1
🇷🇺Russia1st market entered · 2026Advancing
Exploring
1 signalExploring stage
Current stageExploringTesting the waters
Confidence49%Medium
Tracking since2026first signal

Recent signals

Product launch🇷🇺 Russia5mo ago

US atomic battery ready: Standard Nuclear receives HALEU

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Good to know

Frequently Asked Questions Regarding Radiant

Quick answers about Radiant's business, markets, and growth signals.

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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