You actually don't need that much solar on your home, garage, in your yard etc. to produce enough electricity to fuel an EV 100 percent with solar.
Charging your EV with home solar is a three-step process ==>
1) Install a solar system on your home.
2) Buy an EV or PHEV.
3) Plug it in.
I have long been very interested in the question of how much it (does not) matter(s) when one plugs one's electric vehicle in, especially if, like I do, I have the choice of plugging into a home rooftop solar system.
Many years ago, I wrote extensively on this web site/blog about the many intricacies and complexities of what I call "solar offset" charging of an electric vehicle vs. directly filling up with electricity that has been/is being produced directly by a (home rooftop) solar system connected to the same electrical box into which an EV charger and/or the wall-socket into which you're plugging your EV into.
We recently had two solar systems installed here at Highline Crossing Cohousing in Littleton, Colo.
It's taken three long years, but, finally, I am solar-charging my electric car, a 2020 Chevy Bolt, again!