Also most of roofs yet uncovered by panels. And you can do dual use: solarpanels that provide shade for agriculture use, etc.
Land or technology is not the problem - competing with cheap fossil energy in the ground is, as well as the massive investment required to make the complete transition to renewables.
I am pretty sure, we would have some desert land to spare.
https://en.m.wikipedia.org/wiki/Desertec#/media/File%3AFulln...
Also most of roofs yet uncovered by panels. And you can do dual use: solarpanels that provide shade for agriculture use, etc.
Land or technology is not the problem - competing with cheap fossil energy in the ground is, as well as the massive investment required to make the complete transition to renewables.