How much does it cost to charge a Tesla Model 3 in Washington?

Washington's 12-month average rate, 14.2¢/kWh, is 21% below the U.S. average of 18.0¢/kWh, which saves $0.93 per 100 miles compared with the national rate.

Rates in Washington are rising quickly: the latest 12-month average is 11.9% higher than in the 12 months before, adding $45 a year to the cost of charging the Tesla Model 3.

Over the last 24 months Washington was cheapest in winter and most expensive in spring: January 2025 at 11.8¢/kWh and May 2026 at 14.9¢/kWh, which moves the Tesla Model 3's monthly charging cost between $29 and $37. The latest published month, August 2026, came in at 14.6¢/kWh, 3% above the 12-month average.

Of the 5 states covered so far, Washington is the cheapest place to charge the Tesla Model 3; California is the most expensive at $7.86 per 100 miles.

Among the 10 EVs on OutletBill, the Tesla Model 3 is the 1st cheapest to charge per mile in Washington; the next cheapest, the Tesla Model Y, costs $3.90 per 100 miles.

At 24.3 kWh per 100 miles, the 2026 Tesla Model 3 Standard RWD is among the most efficient EVs EPA has rated for 2026: it uses less energy than 99% of the 321 2026 EV versions tested.

Across all 5 trims of the 2026 Model 3, cost per 100 miles in Washington ranges from $3.45 for the Standard RWD to $4.29 for the Performance AWD, a difference of $103 a year at 1,016 miles a month.

EPA estimates 12 hours to charge the Model 3 Standard RWD from empty on a 240-volt Level 2 home charger, longer than a typical night, though a full charge is rarely needed. At 1,016 miles a month (about 33 miles a day), a day's driving takes roughly 1.5 hours on a Level 2 charger.

Electricity would have to cost more than 60.4¢/kWh, 4.3 times Washington's rate, before the Tesla Model 3 cost more per mile than the 2026 Honda Accord. Put the other way, gas would have to fall below $1.10 a gallon.

Gas costs use EIA's Washington retail average for regular gasoline ($4.70 a gallon over the same 12 months, 30% above the U.S. average of $3.61) and the 2026 Honda Accord's EPA rating of 32 mpg combined.