Cost to charge an EV in Washington
Washington residential electricity runs 14.71 cents per kWh as of July 2026, which is 20 percent below the national average of 18.31 cents. That makes it the 13th cheapest of the 51 states and territories the EIA reports.
What it costs here
A full charge is battery size times your rate, plus the 12 percent a car draws from the wall beyond what the battery holds. Every cost below uses Washington's own rate. Range is the one estimate on this page: it assumes 37.1 kWh per 100 miles, the median EPA rating across current model-year electric cars, so a car more or less efficient than average will differ.
| Battery capacity | Full charge | Range added |
|---|---|---|
| 40 kWh | $6.59 | about 120 miles |
| 60 kWh | $9.89 | about 180 miles |
| 75 kWh | $12.36 | about 230 miles |
| 100 kWh | $16.48 | about 300 miles |
| 131 kWh | $21.58 | about 400 miles |
Charging at home in Washington costs $5.46 per 100 miles at 37.1 kWh per 100 miles, the median EPA rating across current model-year electric cars. That is energy measured at the wall, so it carries no separate loss factor.
By how much you drive
Charging at home in Washington, by monthly mileage:
| Usage | Per month | Per year |
|---|---|---|
| 500 miles a month | $27.29 | $327 |
| 1,000 miles a month | $54.57 | $655 |
| 1,500 miles a month | $81.86 | $982 |
How Washington compares
Driving 1,000 miles a month and charging at home costs $655 a year in Washington. The same driving costs $566 in Louisiana, the cheapest state at 12.72 cents, and $2,137 in Hawaii, the most expensive at 48.00 cents. Rates come from the U.S. Energy Information Administration and are refreshed on the schedule described on the methodology page.
Charging cost questions
- How much does it cost to charge an EV in Washington?
- At 14.71 cents per kWh, a full charge on a 75 kWh battery costs $12.36, and driving costs $5.46 per 100 miles. At 1,000 miles a month that is $54.57 a month and $655 a year. A smaller 40 kWh battery costs $6.59 to fill and a 131 kWh battery $21.58.
- Is electricity expensive in Washington?
- Washington residential electricity is 14.71 cents per kWh, 20 percent below the national average of 18.31 cents. That ranks it 13th of the 51 states and territories the EIA reports, counting from the cheapest.
- How does that compare with the cheapest and most expensive states?
- Driving 1,000 miles a month costs $655 a year in Washington, $566 in Louisiana and $2,137 in Hawaii. The spread between the cheapest and most expensive state is $1,571 a year on identical driving.
- Why is a full charge more than the battery's rated size times the rate?
- Because a car draws more from the wall than the battery ends up holding: conversion and thermal losses run about 12 percent, so a 75 kWh battery pulls roughly 84 kWh to fill. The per 100 miles figure above already accounts for this, because the EPA measures its 37.1 kWh per 100 miles at the wall rather than at the battery.
- Where does this rate come from?
- The U.S. Energy Information Administration's residential electricity price series, for July 2026. It is an average across the state, so your own utility's rate and any time of use plan will differ. Sourcing and refresh cadence are described on the methodology page.
Prices and specifications verified October 5, 2026, and re-checked weekly after that. How these numbers are checked.
Free guide: choosing a home EV charger
A practical worksheet covering amperage sizing, plug vs hardwired, smart features worth paying for, and the questions to ask your installer.
One confirmation email delivers the guide. Unsubscribe anytime. No spam, ever.