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

In South Dakota, home electricity runs 14.33¢/kWh — put a 2026 Volvo EX90 (21 Inch Wheels)'s EPA-rated 34.5 kWh/100mi against that and 100 miles costs $4.94, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 69.2% cheaper per mile than gasoline in South Dakota — charging at home costs a fraction of what gas would here.

What a year of driving costs

South Dakota owners putting 15,000 annual miles on a 2026 Volvo EX90 (21 Inch Wheels) spend about $741 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,662 saved annually, at this mileage.

What one full charge costs

At South Dakota's rate, fully covering this 2026 Volvo EX90 (21 Inch Wheels)'s 291-mile EPA range costs about $14.37 (100.3 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Volvo EX90 (21 Inch Wheels) in South Dakota ranks 4,231 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 South Dakota ranks 14 of 51 for cheapest residential electricity.

Next step: home charger installation

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 South Dakota 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. At 14.33¢/kWh, South Dakota sits in the middle of the national range — the guide to why charging cost varies by state shows where.