Batteries don't scale well when you're speaking of extremely high energy needs, especially given their deterioration over time. There's more clever things like

Batteries don't scale well when you're speaking of extremely high energy needs, especially given their deterioration over time. There's more clever things like artificial hydroelectric, but even that runs into scaling issues. Deep space solar, once established, has nice scaling potential. The inverse square distance:luminosity relationship really opens the door to some truly sci-fi type scenarios. SpaceX is not publicly traded. It's privately owned and operated, with Elon's motivation behind the company being consistently ideological in nature. The water prices were apples to apples comparisons - the cost of a 0.33 liter bottle of water in an average restaurant.