Nuclear Atlas
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Companies · Nuclear, fuel and SMR · data

Radiant Industries, Inc.

RadiantSMR developerPrivate, unlistedHQ El Segundo, CA, United States

Profile

Radiant develops Kaleidos, a helium-cooled portable microreactor (about 1 MWe / 3 MWt) using TRISO HALEU fuel fabricated by Standard Nuclear. Its demonstration unit is installed at the NRIC DOME test bed at Idaho National Laboratory, where the preliminary documented safety analysis was approved in February 2026 and the first fuel tranche arrived on 1 Jul 2026 ahead of a five-phase test campaign; criticality was not confirmed in the sources reviewed. Customer deployments are targeted for 2028. Private; no market data apply.

Source: the SMR projects dataset (ANS 2 Jul 2026; DOE releases), 9 Oct 2026 · confidence medium

Key projects

Key projects from the company record; a map link appears where the project id is in a map dataset.
ProjectCountryStageNoteMap
Radiant Kaleidos (helium-cooled microreactor, ~1 MWe / 3 MWt) - NRIC DOME test bed, Idaho National Laboratory, IdahoUSAUnder constructionRegulator stage as of 9 Oct 2026: PDSA approved Feb 2026; first fuel tranche received 1 Jul 2026; five-phase test campaign (zero-power criticality then full power) planned summer 2026; criticality not confirmed in sources reviewedopen on the map

Deals

No deal recorded for this company (as of 9 Oct 2026). All deals.

Documents

Documents captured on the record: the latest documents and, where present, the technical report.
DocumentTypeDate
ANS: The deadline arrives - checking in on the Reactor Pilot ProgramNews2 Jul 2026

Chart

TradingView symbol: n/a · private, unlisted
Market cap, USD
n/a · private, unlisted
Market cap, local
n/a · private, unlisted
Chart: none. No TradingView symbol is on the record (private, unlisted); the dated snapshot is all this page shows.

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