South Dakota home charging cost for the 2027 Rivian R1T Premium Long Range (20in)

At South Dakota's residential electricity rate of 14.33¢/kWh, a 2027 Rivian R1T Premium Long Range (20in) (rated 42 kWh per 100 miles by the EPA) costs $6.01 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. Charging at home is much cheaper than gas here: 62.5% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2027 Rivian R1T Premium Long Range (20in) costs roughly $902 a year to charge at home in South Dakota, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,501 a year.

Filling up the 2027 Rivian R1T Premium Long Range (20in), in dollars

Covering the 2027 Rivian R1T Premium Long Range (20in)'s EPA-rated 380-mile range takes about 159.5 kWh, which costs about $22.86 at South Dakota's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

Where this ranks

This combination ranks 9,489 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1T Premium Long Range (20in) alone ranks 297 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

See the methodology guide for exactly which EIA and EPA figures feed 2027 Rivian R1T Premium Long Range (20in)'s cost in South Dakota. 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.