What is TerraPower Natrium (Meta 8-plant agreement)?

Natrium is TerraPower's reactor design, a sodium-cooled fast reactor that operates unpressurized and pairs with a molten-salt thermal energy storage system. The reactor itself runs continuously at a steady output, while stored heat lets the plant's electrical output be temporarily boosted on demand, giving a nuclear baseload plant the kind of dispatch flexibility usually associated with a gas-fired plant.