How much does an electric car cost per month in Washington?

About $46.58 a month, assuming 3,800 kWh a year at 14.71¢/kWh.

How many kilowatt-hours does an electric car use?

Roughly 3,800 kWh a year under these assumptions.

Is that expensive compared with other states?

Washington has the 13th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $696 a year.

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Cost to run an electric car in Washington (July 2026 rates)

At 14.71¢ per kilowatt-hour — Washington's average residential price in July 2026 — running an electric car costs $559 a year. That is 20% less than the national average of $696. Washington's residential rate is up 9.4% from July 2025, which moves this appliance from $511 to $559 a year.

Per day: $1.53
Per month: $46.58
Per year: $559

Assumption: 3,800 kWh a year. 12,000 miles a year at roughly 3.5 miles per kWh, plus about 10% charging losses, on home Level 2 charging. Use the calculator to swap in the numbers from your own model.

How Washington compares

Washington pays 14.71¢/kWh, the 13th cheapest residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $137 less a year than the typical U.S. household pays for the same use. Running the same electric car costs $483 a year in Louisiana and $1,824 in Hawaii, so where you live changes this bill by $1,341 a year.

State	Rate	Per month	Per year
Wyoming	14.36¢	$45.47	$546
Mississippi	14.54¢	$46.04	$553
Washington	14.71¢	$46.58	$559
Montana	14.99¢	$47.47	$570
Florida	15.03¢	$47.59	$571

States ranked by average residential price, cheapest first. See all 51 states for an electric car.

What else costs about the same in Washington

Electric water heater$515 a year in WA Hot tub$368 a year in WA Central air conditioner$346 a year in WA

Cutting the number down

Charging on an off-peak or EV rate plan is usually the single largest lever, and it costs nothing but a schedule setting.
Charging losses are real: the meter sees noticeably more than the battery receives, especially in cold weather.
Cost per mile, not cost per charge, is the number that compares cleanly against a tank of gasoline.

Questions

How much does an electric car cost per month in Washington?: About $46.58 a month, assuming 3,800 kWh a year at 14.71¢/kWh.
How many kilowatt-hours does an electric car use?: Roughly 3,800 kWh a year under these assumptions.
Is that expensive compared with other states?: Washington has the 13th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $696 a year.