Math — big car
Battery 100 KWhrs
Solar, before losses, the sun provides 1 KW per square meter.
Post losses, call it 18% efficient so 180 watts per sq meter.
If you got 1 hour, you fill that 100 KWHrs at 180 watts/m^2 with 555 sq meters. About 70 feet X 70 feet. This is not going to fly because amperage will start melting wires pumping that in so fast.
But if you got 10 hrs to charge you don’t need 555 square meters. It’s linear. 55.5 square meters or 22 ft X 22 ft.
That’s for 1 vehicle in 10 hrs.
In the final analysis, what is killing these things is realization that there is no compelling reason to endure these problems.
Another thing you probably agree with me on, but I'm stating for others as a reminder, that solar is not dependable. And certainly not for mass consumption (i.e. making the grid rely on it or making an entire city of EV owners rely on it).
However, Decentralized Solar can be very beneficial in certain climates and power consumption habits (including charging a family's EV). How? The #1 benefit my solar equipment does for me is that I'm the one who regulates it -- not some Dim worshiping bureaucrat trying to move up in the world of warmageddon cult regulations and population control.
I'm the one who figured out how much solar to keep investing in to take advantage of the economies of scale, but not so much I run into the law of diminishing returns. Same for how much inverter capacity was best for our power consumption habits. Same for my battery storage. Same for which EV we got to do most of our driving in (because I can't produce my own gasoline, though I still have a gas pickup for the times we need either a 2nd car or for when an EV won't do).
Using hydrocarbons is way more advantageous than solar from a PHYSICAL science perspective. Unfortunately, the warmageddon cult Dims have put too much POLITICAL science between hydrocarbons and us, making us pay too much to access them. Decentralized Solar, however, removes the Dims' political science from being in the way of satisfying at least some of our energy needs. In our case, about 19% of our power has to be pulled from the grid, with 81% of the power we consume coming from homemade power, including charging the EV (about 15K miles per year on home charged miles). What I pay per month on the loan I took out to hire contractors to install solar and other energy improvements to the house, plus what I pay in a tiny power bill, is less than what I'd be paying with the full power bill + natural gas bill (if I hadn't converted my 2 nat gas appliances to electric) + lots of gasoline for the 1,200 miles per month we drive per year (just the home charged miles, not counting miles on trips since those miles are unrelated to solar).
But all that works well ONLY if you're in a good situation for it and your energy consumption habits are good (I don't believe in solar or EV's forcing people to change). Another requirement is the end consumer taking ownership of doing the math and the research to make sure it's optimized for your particular needs and wants. Basically, it works well only if you take responsibility for making sure your decentralized solar energy source is configured as much as we demand the elected leaders' lackeys to do.