#Germany is using heated #bricks to replace gas-fired industrial boilers

Michelle Lewis | Jan 19 2026

"At 100 megawatt‑hours (MWh), the Brunsbüttel system is scheduled to come online by the end of 2026. It will be tied with the 100 MWh Rondo heat battery that went into operation in California in October as the largest industrial heat battery in the world. Covestro’s project is backed by Breakthrough Energy Catalyst and the European Investment Bank.

[...]

"The underlying technology is deceptively simple. Rondo’s heat battery uses bricks – a proven heat‑storage medium that’s been used in steelmaking for centuries – paired with modern automation and controls. Electricity heats the bricks; the stored heat runs a conventional boiler; and the system produces emission‑free steam using electricity from #renewable sources."

Read more:
https://electrek.co/2026/01/19/germany-is-using-heated-bricks-to-replace-gas-fired-industrial-boilers/

#SolarPunkSunday #OldSchoolTechnology #NewSchoolTechnology #HeatBatteries #HeatStorage #RenewablesNow

Germany is using heated bricks to replace gas-fired industrial boilers

Rondo Energy and Covestro break ground on a 100 MWh heat battery in Germany, using surplus renewables to create fossil-free industrial steam.

Electrek