2027 Rivian R1S Quad (22in UHP): home charging cost in South Dakota

A 2027 Rivian R1S Quad (22in UHP) draws 47.3 kWh per 100 miles per the EPA; at South Dakota's 14.33¢/kWh residential rate that's $6.78 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is much cheaper than gas here: 57.6% less than gas per mile, here specifically.

2027 Rivian R1S Quad (22in UHP): yearly cost in South Dakota

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2027 Rivian R1S Quad (22in UHP) charged at home in South Dakota costs about $1,018/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,385 a year.

Filling up the 2027 Rivian R1S Quad (22in UHP), in dollars

A 2027 Rivian R1S Quad (22in UHP) needs roughly 160 kWh to reach its EPA-rated 338-mile range, which runs about $22.93 at 14.33¢/kWh in South Dakota.

Where this ranks

This combination ranks 12,452 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Quad (22in UHP) alone ranks 371 of 400 models for efficiency; South Dakota alone ranks 14 of 51 states for electricity price.

Next step: home charger installation

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

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

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. 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.