Compression

Air compression energy storage device

Compressed air energy storage stores electricity by compressing air in underground caverns or tanks and releasing it later through turbines. [1] The first utility-scale CAES project was in the Huntorf power plant in Elsfleth, Germany. . Thermal mechanical long-term storage is an innovative energy storage technology that utilizes thermodynamics to store electrical energy as thermal energy for extended periods. Since the 1870's, CAES systems have been deployed. . [PDF Version]