New Compressed Air Energy Storage System Could Deliver Double ... | Digital Sustainability |

The technology is the brainchild of founder Danielle Fong, who initially wanted to use compressed air to power scooters, but has since turned her attention to a larger order of storage: grid-scale.


While compressed air storage isn't a new invention, by any means, Fong's innovations greatly improved the efficiency of this type of system, which has been hampered by efficiency losses of up to 50%. Fong's improved version uses a mist of water sprayed into the air storage tanks, which acts to absorb and store the heat generated from the compression (and release it on expansion), allowing the LightSail system to achieve a 90% thermodynamic efficiency in the process, and a 70% overall round-trip efficiency.

Via Hans De Keulenaer