GE Vernova Hitachi Nuclear EnergyIn Development
345 MWe sodium-cooled fast reactor with molten-salt thermal storage that can boost output to 500 MWe for over five hours, co-developed with TerraPower under a 2020 joint development agreement. The first plant is being built at Kemmerer, Wyoming.
Latest update Jul 17, 2026
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NRC construction permit granted March 4, 2026; TerraPower and Bechtel began nuclear plant construction at Kemmerer Unit 1 in April 2026 with a workforce of roughly 1,600.
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300 MWe Gen III+ boiling-water small modular reactor derived from the NRC-certified ESBWR, using natural circulation and passive safety systems, a 60-year design life, and proven GNF fuel. Designed for a power block that fits within two soccer fields and 24-36 month nth-of-a-kind construction. The first grid-scale SMR under construction in the Western world.
GE Vernova-led fuel alliance with Hitachi producing advanced BWR fuel assemblies (GNF2, GNF3, GNF4) that improve plant performance and fuel-cycle economics for the operating reactor fleet worldwide.
Lifecycle services for the global BWR fleet (and PWR services) - outage execution, performance upgrades, inspections, non-destructive examination and VR-based training - built on GE's boiling-water-reactor lineage dating to the first privately financed reactor at Vallecitos in 1957 and the NRC-certified ABWR/ESBWR designs.
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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.