Our high-temperature storage system is a power-to-heat technology based on the idea of sector coupling. It converts wind and solar PV electricity into a reliable and steady supply of thermal energy. The TES can be charged for example, during off-peak periods when the grid is not heavily used and electricity prices drop. Thermal energy can be discharged whenever it is required. The stored heat is transfered to a heat exchanger which supplies process heat between 150 °C and 400 °C.