TerraPower Natrium (Kemmerer)
The most advanced new-reactor site in America, on a retiring coal town.
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TerraPower began non-nuclear construction at Kemmerer, Wyoming in June 2024: a 345 MW sodium-cooled Natrium reactor with molten-salt storage that can flex to 500 MW — sited beside a retiring coal plant to reuse its grid connection and workforce. Target operation ~2030; its NRC review is the pathfinder for advanced-reactor licensing.
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Record reviewed as of 2026-01-15 — see Methodology.