What it costs to charge a 2026 Rivian R1S Performance Dual Max (22in) in South Dakota

In South Dakota, home electricity runs 14.33¢/kWh — put a 2026 Rivian R1S Performance Dual Max (22in)'s EPA-rated 39.9 kWh/100mi against that and 100 miles costs $5.72, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 64.3% cheaper per mile than gasoline in South Dakota — charging at home is much cheaper than gas here.

2026 Rivian R1S Performance Dual Max (22in): yearly cost in South Dakota

Home charging this 2026 Rivian R1S Performance Dual Max (22in) in South Dakota runs about $858 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,544 saved annually, at this mileage.

Filling up the 2026 Rivian R1S Performance Dual Max (22in), in dollars

$23.47 — that's what South Dakota's 14.33¢/kWh rate puts on the 163.7 kWh a 2026 Rivian R1S Performance Dual Max (22in) needs for its full 410-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Performance Dual Max (22in) in South Dakota ranks 8,103 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Performance Dual Max (22in) ranks 266 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.

Ask a licensed South Dakota electrician to quote the install before this math becomes a real decision.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. South Dakota's 14.33¢/kWh rate ranks 14 of 51 states; the state rate guide lays out the full spread.