We've yet to unveil the details and results of our technology, but here's a preview:

We have a breakthrough energy storage technology called Regenerative Air Energy Storage.

The concept is to store energy in compressed air -- a motor/generator first drives a compressor, which stores air in a tank. To deliver stored energy, the air comes out and is expanded, driving the motor/generator as a generator and generating electricity.

Our innovation captures the heat energy of compression (the majority of the energy in compressed air is stored in the form of heat) and allows us to regenerate from it almost all of it in the form of useful energy.

We do this by spraying a fine water mist directly into the compressing and expanding air. The high surface area and heat capacity of water rapidly absorbs the heat of compression, and delivers it during expansion, to be converted back into mechanical energy.

Thanks for the explanation! I'm working on energy storage too, but through electrochemical means (ie. water splitting). It's always interesting to hear how other people are tackling the problem. I look forward to hearing more about LightSail in the future.