SustainX's isothermal compressed air energy storage (ICAES™) technology enables a site-anywhere, zero-emissions storage solution. Through superior thermodynamics, SustainX technology frees compressed air storage from the risks of caverns and the emissions of natural gas.

Isothermal compression allows air to reach high pressures without the inherent challenges of high temperatures or high thermal losses. Compressed air at near ambient temperature can be stored until needed with minimal energy losses. When power is needed, isothermal expansion can deliver electrical energy with no requirement for natural gas combustion

via Isothermal Compressed Air Energy Storage – SustainX.