Hopefully nowhere, because we will have moved on to organics we can synthesize or high density metal-air fuel cells or something. And if not, I'm sure the enti

Hopefully nowhere, because we will have moved on to organics we can synthesize or high density metal-air fuel cells or something. And if not, I'm sure the entire dystopian horror that a space colony would be will have wireless charging everywhere... maybe they can just beam power everywhere in their mostly indoor world.