Compressed air energy storage
Compressed air energy storage (CAES) is a way to store energy generated at one time for use at another time using compressed air.At utility scale, energy generated during periods of low energy demand (off-peak) can be released to meet higher demand (peak load) periods.
License: Creative Commons Attribution-Share Alike 3.0 (CC BY-SA 3.0)
Image Source: https://en.wikipedia.org/wiki/File:Bouteille_air_démarrage.JPG
-Video is targeted to blind users
Article text available under CC-BY-SA
image source in video