Cost to Charge
You might occasionally be able to charge for free at a public station, but that’s not something you can count on. Most electric-car owners charge at home, and so you’ll need to know what it costs to charge there.
The cost of electricity is much more stable than the cost of gasoline, but it varies tremendously in the U.S. The residential average per kilowatt-hour currently ranges from 9.3 cents in Louisiana to 28.9 cents in Hawaii. The national average is 13.3 cents, which is only about 2 cents more than it was a decade ago. In California, which leads the nation in electric car sales, the residential average cost per kilowatt hour is 20.1 cents. To find your state’s average, check this state-by-state list of the average cost per kilowatt-hour.
Your state’s average is just that, however. What you pay is determined by your utility company and