South Dakota home charging cost for the 2027 Rivian R2 Performance AWD (20in AT)

In South Dakota, home electricity runs 14.33¢/kWh — put a 2027 Rivian R2 Performance AWD (20in AT)'s EPA-rated 34.1 kWh/100mi against that and 100 miles costs $4.89, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home costs a fraction of what gas would here: 69.5% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

At fueleconomy.gov's default of 15,000 annual miles, the 2027 Rivian R2 Performance AWD (20in AT) costs roughly $733 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 $1,670 a year.

Cost of a full charge

Covering the 2027 Rivian R2 Performance AWD (20in AT)'s EPA-rated 307-mile range takes about 104.7 kWh, which costs about $15 at South Dakota's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 4,006 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R2 Performance AWD (20in AT) alone ranks 129 of 400 models for efficiency; South Dakota alone ranks 14 of 51 states for electricity price.

Before you install a home charger in South Dakota

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.

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

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2027 Rivian R2 Performance AWD (20in AT)'s cost in South Dakota. South Dakota's 14.33¢/kWh rate ranks 14 of 51 states; the state rate guide lays out the full spread.