[Kon5ole]

You don't need new square mileage for solar, you can add it to areas already used for other things. The Netherlands for example have the largest percentage of rooftop solar of all the EU countries, getting over 14% of their yearly electricity production from it.

[numpad0]

Rooftop solar don't work when a single house's worth of roof can generate a whole family, && there are more than one family sharing the land - energy generated from solar is proportional to projected area on the land and not volume or total surface area of buildings on it. I guess buildings are lower-rise in Netherlands(which is good for your psychological health).