average cost to charge a tesla
First, some numbers. Fuel efficiency and cost. To cover 15,243 miles, I used 5,074 kWh of electricity, for an average of 333 watt-hours per mile. That's a bit better than the car's EPA-rated efficiency of 350 Wh/mi, and converts to precisely 3 miles per kWh.013 Tesla Model S electric sport sedan [photo by owner David Noland]. At my local utility's rate of 14 cents/kWh, that works out to a total fuel cost for the year of $530, or about 3.4 cents/mile.