Interesting. Saw a company on Shark Tank that was using compressed air as energy source. Didn't think there was enough energy storage in that manner but I guess there is.
They, AOE, as a Canadian enterprise, are expanding their operations to the USA, Oregon. ...Expansion is good for the entire world, when Water is number one commodity in most countries, including the USA. ...It is @ a point of being a serious crisis*; we don't need to look very far to see why.