Storage of Solar Energy
Solar energy is converted into thermal energy via concentrating solar collectors and into electrical energy in a steam process or ORC. In order to be able to continue generating electrical energy after sunset, thermal storage with a capacity of several hours is used. Previous technologies are primarily based on salt as a storage medium.
The HTTES not only has excellent storage characteristics at typical temperatures of up to 565 °C but also allows significantly higher temperatures than salt storage (over 1,000 °C) and is a much simpler technology.
Thermal storage in CSP systems
In the field of solar power plants, the HTTES impresses with its low investment costs, easy-to-use technology (without the corrosion problems of salt storage) and compact space requirements.