Cities of the future may double as high-density solar farms

Solar power may be one of the most promising forms of renewable energy but the fact remains that the solar farms that generate all of this electricity are sprawling masses of solar arrays that take up tons of open space, especially when compared to far more compact coal and gas power plants. The most obvious solution would be to start building solar power plants vertically rather than horizontally and the best way to do that may be to turn our cities into self-powered solar hubs.