very rough estimates but gives a clue about what electricity is needed for an all EV United States according to statista for 2020 there were 276 billion registered vehicles in the US. according to statista 2020 electricity used in the US was 3,802 billion kilowatt hours [KWH] policyadvice claims the average car is on the road for 13,474 miles per year. motorbiscuit claims an average an electric vehicle gets 100 miles per 30 KWH an average EV would need 134.74 x 30kwh = 4042.2 kwh to travel 13,747 miles. so 276 billion vehicles x 4042.2 kwh/vehicle/year = 1,115,647,200,000,000 kwh per year to operate. 1,115,647,200,000,000 kwh / one billion = 1,115,647.2 billion KWH electricity usage for US year 2020 was 3,802 billion KWH electricity needed for all electric vehicles for one year is 1,115,647.2 billion KWH 1,115,647.2 billion KWH / 3,802 billion KWH = 293.43 basically to run all vehicles on electricity we would need to generate roughly 293 times the electricty more than we currently generate now factor in electric heating...