Okay, so I’ve double-checked all the most important numbers you’ve used. One thing I’ve noticed is that Alec compared the land-use of ethanol and solar power, but our fuel is only 10% ethanol. Even then though that doesn’t explain the whole number you got to.
As I said in my post, this guy is talking about fuel for cars, not the entire power usage
With 270 million acres, and 1mW for every 10 acres, that’s 27 million mW (648 trillion Wh a day). Far more than what you say is needed for all cars to be electric
I basically skipped over your 3rd and 4th paragraph
That is literally what I said in paragraph 3 "The US currently has ~12.5k utility scale electric power plants, to replace those with solar and switch all cars to electric you would need ~2-2.5 million solar farms the size represented in the video."
America consumes 25,000tWh of energy per year (about 7Twh per day)
My research said the US produces 11 trillion Wh per day and said that if all US vehicles were electric it would require 2.2-5.5 trillion Wh more per day. Looking at consumption is important, but looking at production is more accurate. Some electricity is sold or wasted, but that's to ensure demand is met when the grid sees a spike in usage.
27 million mW (648 trillion Wh a day)
You must have skipped paragraph 2 as well. A 27 MW solar plant is rated as such because that is the maximum instantaneous power outout, but most places only have ~16 hours of sunlight and won't be running at 27 MW for all 16 hours. As such a 27 MW solar farm will only make ~130-150 MWh/day.