Each Tesla uses between 0.24 to 0.30 kWh per mile, or about 4,500 kWh over a year for 15,000 miles of driving. Other electric vehicles use more or less, but within a similar range. At 0.30 kWh per mile, that’s 90 kWh for 300 miles of driving for the typical week.
The average American household without an in-home EV charging station consumes about 30 kWh per day, or about 10,720 kWh over a year’s time. With just one electric vehicle being charged at home, that total increases to about 15,220 kWh. For two-EV households, that total runs up to nearly 20,000 kWh per year (assuming both drivers commute to work). That’s nearly double current electricity usage for such families.
Without an EV in the garage, air conditioning uses nearly a fifth of household electricity, followed by space heating and water heating (a combined 25%). But adding just one home-charged EV changes that calculus dramatically. The EV takes up about 30% ot the much higher total electricity use, dropping the share for all other uses significantly.
Two home-charged EVs would eat up nearly half the household’s total electricity usage – and require thousands of dollars to upgrade the house’s electric panel. Today’s 50-kva transformers, which cost about $8,000 each, can power about 60 homes; that number drops closer to 40 if each of those homes houses one electric vehicle, closer to 30 with two EVs using home chargers.
For a city with 120,000 homes, which today may require about 2,000 transformers, the addition of 120,000 home-charged electric vehicles means adding 1,000 transformers, about $8 million. But that’s just the tip of the iceberg, because distributing 50 to 100% more household electricity requires generating 50 to 100% more electricity.
All this costs money that most Americans today do not have, especially at the generation end. Especially with the push to eliminate electric generation from coal and natural gas and even nuclear energy. It also requires massive construction of electric infrastructure, from transmission lines to transformers to in-home charging stations accompanied by larger electric fuse boxes...<<<Read More>>>....
