Radiant Industries

← DOE PILOT

RADIANT INDUSTRIES

FOUNDED

2020

El Segundo, CA

TYPE

Private

Also tracked in: DOE PILOT

Signal Indicators

FUNDING STRENGTHMEDIUM

DOE Reactor Pilot cost-share · VC-backed

COMMERCIAL TRACTIONMEDIUM

Military / remote power focus · strong use case

REGULATORY MOMENTUMHIGH

PDSA approved · commercial fuel contract signed

SUPPLY CHAIN READINESSHIGH

Urenco commercial contract signed Jan 2026

Signal indicators reflect Corium editorial assessment based on public data. Not investment advice.

LOADING MARKET DATA…

DOE REACTOR PILOT CIRCUIT

PDSA APPROVED — FUEL CONTRACT SIGNED

▶ HOLDING POSITIONLast activity: date unknown

Last verified: April 2026 · Source: NRC ADAMS / Press Release · Scoring methodology ℹ

Recent Activity

No recent activity on record

Company Profile

Radiant Industries, headquartered in El Segundo, California, is developing the Kaleidos — a 1 MWe helium-cooled gas reactor using TRISO fuel, targeting military forward operating bases and remote industrial deployments. Radiant is competing in the DOE Reactor Pilot Program, having achieved PDSA approval and signed a commercial HALEU fuel supply contract with Urenco in January 2026 — one of the first commercial fuel contracts in the DOE Pilot competition. Kaleidos is designed to be truck-deployable: a self-contained, containerized reactor that can power a remote facility without grid connection.

Reactor Specs

REACTOR DESIGN

Kaleidos · Gas-Cooled Microreactor

Uses helium gas as coolant instead of water. Operates at higher temperature for greater thermal efficiency.

POWER OUTPUT

1 MWe

Powers ~813 average US homes. A standard large nuclear plant produces ~1,000 MWe.

COOLANT

Helium

Inert gas that cannot become radioactive. Allows very high outlet temperatures for industrial heat applications.

FUEL TYPE

TRISO (HALEU)

Tristructural isotropic fuel: uranium encased in ceramic layers that cannot melt. Each particle acts as its own micro containment vessel.

TARGET OPERATION

2026

US nuclear projects historically require 7–10 years from construction permit to first power. The 2026 target assumes factory-built modular components and no major regulatory delays.

SITE LOCATION

Idaho National Laboratory, ID

Adjacent to Idaho National Laboratory — the DOE's primary nuclear energy research facility. Site has hosted test reactors since the 1950s.

Licensing Milestone Tracker

PRE-APPLICATION

APPLICATION

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UNDER REVIEW

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RAI RESOLVED

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DESIGN CERTIFIED