Adiabatic compressed-air energy storage (CAES) for electricity supply:
Storing electricity safely, efficiently and in large amounts that is one of the greatest challenges for the power supply of the future.The idea behind Adiabatic CAES for the electricity supply is to compress air at times of high electricity availability, to place the resulting heat in an interim heat-storage device and to inject the air into subterranean caverns. When electricity demand rises, this compressed air can be used to generate power in a turbine while recovering the heat.
This adiabatic process, in which the heat of the compressed air is not lost, but remains in the process for use in power generation, differs from existing compressed-air storage facilities, above all when it comes to the much higher efficiencies (approx. 70%). Also, the heating process no longer uses natural gas. All these paves an advantage to make use of this kind of compressed air energy.