Radiant NuclearIn Development
The first full-scale Kaleidos article, the same design, size, and commercial fuel load intended for customers, built in El Segundo and shipped by trailer to INL's DOME facility for a five-phase campaign: install and fuel, zero-power criticality, 1 MW thermal, full-temperature/full-power operation, and a minimum 150-hour unattended run.
Latest update Sep 18, 2026
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Left El Segundo on August 12, 2026. TRISO fuel fabricated by Standard Nuclear has been at DOME since July 1. Radiant targeted completing the campaign in Q3 2026. As of September 18, 2026 it had not announced criticality or any later phase. DOE awarded Radiant exclusive DOME access for a full year.
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NuScale Power
Full-scale SMR power plant with 12 modules generating up to 924 MWe of carbon-free electricity.
NuScale Power
Self-contained 77 MWe pressurized water reactor module with integrated steam generators.
NuScale Power
Mid-size SMR plant configuration with 6 modules producing up to 462 MWe.
Oklo
Oklo's fast-fission powerhouse product line is designed for build-own-operate deployment, targeting customers that want firm clean power in a smaller footprint than traditional large reactors.
