Charging a 2026 Volvo EX90 (21 Inch Wheels) at home in Washington

At Washington's residential electricity rate of 14.35¢/kWh, a 2026 Volvo EX90 (21 Inch Wheels) (rated 34.5 kWh per 100 miles by the EPA) costs $4.95 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. That works out to 69.1% cheaper per mile than gasoline in Washington — charging at home costs a fraction of what gas would here.

What a year of driving costs

Washington owners putting 15,000 annual miles on a 2026 Volvo EX90 (21 Inch Wheels) spend about $742 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,661 saved annually, at this mileage.

What one full charge costs

At Washington's rate, fully covering this 2026 Volvo EX90 (21 Inch Wheels)'s 291-mile EPA range costs about $14.39 (100.3 kWh) — the energy the EPA test actually used, not the battery's rated size.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Volvo EX90 (21 Inch Wheels) in Washington ranks 4,332 for cost savings versus gas — 1 being the best deal nationally. Separately, the Volvo EX90 (21 Inch Wheels) ranks 135 of 400 EV models for raw efficiency, and Washington ranks 15 of 51 for cheapest residential electricity.

Before you install a home charger in Washington

Everything above is the per-mile and per-year cost once a home charger exists — getting one installed is a separate electrical job whose price depends on your panel and wiring, not the state average used here.

Line up a few Washington electrician quotes for Level 2 install before you commit either way.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Curious how Washington's 14.35¢/kWh compares? The guide to charging cost by state ranks every state side by side.