How a thermal battery works

Cheap midday electricity heats a stack of bricks white-hot; a fan carries that heat to a boiler that makes factory steam around the clock. Follow one day of charging and discharging. Every number comes from one model.

Sources: Latitude Media, “How big does a heat battery brick need to be?” (Calgren 2 MWh unit, groundbreaking Oct 2022, steam by early 2023; heat above 1,000 °C; 200 kWh prototype; about 600 MWh goal at Calgren); Energy-Storage.news, 2 MWh initial deployment. Brick mass, temperature floor, losses, the charging window and the layout are illustrative. Others on this approach: Antora Energy.