The entire "green energy" is absurd for anyone that has real technical knowledge of the systems.

As far as the grid load, I don't have enough to quantify, but if a block of people all charged their cars and it was within their individual breakers, it would be the breaker next up the line that would trip.

No different than the LEED construction standards everywhere new. Everything is about electrical efficiency even over system efficiency. So, if you double or triple the amounts of steel, copper and aluminum to reduce the size of an electrical component, THAT is an improvement.

Then once complete, because of all the sensors, controls, monitoring stations and automation, the LEED standard uses something like 75% more power than an equivalent building without LEED.

Solar panels, on top of what u/whenisenoughh pointed out, much north of Texas, a grid scale solar plant only becomes profitable due to subsidies. Roughly ditto for wind, except the geographical area is different.