Where do they get all the rare earth minerals needed to make all those solar panels? To say nothing of the problem of damage, replacement, how do they work in Chicago or Minnesota in the winter.
The panels are warm. Snow melts. In colder regions, these could actually be a fairly good thing.
Not all solar panels are built with Cadmium telluride. Crystalline silicon works as well.
. . .and where are they going to store all the toxic byproducts of mining and refining those rare earths ? Or deal with the fact that solar cell output drops over time, necessitating replacement.
Then there are the networking and power transmission and storage requirements.
Basically, the real problem is Commander Scott’s objection:
“Ye kenna chainge the laws ‘o physics. . . .”