Charging a 2027 Hyundai Ioniq 9 AWD Performance at home in Washington

At Washington's residential electricity rate of 14.35¢/kWh, a 2027 Hyundai Ioniq 9 AWD Performance (rated 40 kWh per 100 miles by the EPA) costs $5.74 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 64.2% cheaper per mile than gasoline in Washington — charging at home is much cheaper than gas here.

What a year of driving costs

Washington owners putting 15,000 annual miles on a 2027 Hyundai Ioniq 9 AWD Performance spend about $861 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,542 saved annually, at this mileage.

Cost of a full charge

At Washington's rate, fully covering this 2027 Hyundai Ioniq 9 AWD Performance's 311-mile EPA range costs about $17.85 (124.4 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 2027 Hyundai Ioniq 9 AWD Performance in Washington ranks 8,180 for cost savings versus gas — 1 being the best deal nationally. Separately, the Hyundai Ioniq 9 AWD Performance ranks 267 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.

Get quotes from local electricians for Level 2 charger installation in Washington before deciding.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Washington's 14.35¢/kWh rate ranks 15 of 51 states; the state rate guide lays out the full spread.