Patent ID: 8209992

Claim:
An energy storage means comprising; a compressor, a gas working fluid, a liquid working fluid storage means, a building, whereby an energy source and a time are selected from the group consisting of; electricity energy and a time determined by computer logic to operate said compressor when electricity cost is cheapest, electricity energy and a time determined by computer logic to operate said compressor when environmental conditions are calculated to minimize cost, electricity energy and a time determined by computer logic to operate said compressor when environmental conditions are calculated to maximize efficiency, solar energy and a time to operate said compressor when captured solar energy is enough to power said compressor, and wind energy and a time to operate said compressor when captured wind energy is enough to power said compressor, and at the time selected, using said energy source, said compressor is powered for the purpose of transforming said gas working fluid to become a liquid working fluid which is then stored in said liquid working fluid storage means, and at a time subsequent to said time selected, when said compressor is not powered, said liquid working fluid is phase transformed from a liquid state back to a gas state and in the phase transformation heat is absorbed to cool said building.