People around the world are turning to renewable sources of energy such as the wind and sun, which offer a sustainable and abundant source of power for our homes, cities and offices. But what do you do when the sun isn't shining or the winds aren't fair?
One way is turn to energy storage whereby energy is stored in compressed air, ready to be released through a turbine and fed back to the grid when required.
However, compression produces a large amount of heat energy that is currently not used in the process. According to the Berkeley, California-based LightSail Energy, "Until now, this was wasted, drastically reducing efficiency."
LightSail Energy is using technology to try and transform energy storage, manufacturing "an elegant method of capturing… heat energy and regenerating useful energy from it."
Like other storage systems, LightSail Energy's stores energy in compressed air, creating heat energy as a by-product. But the company takes this further by adding a fine spray, or mist, of water to capture and absorb the heat energy created during the air compression process.