2027 Rivian R1S Premium Long Range (20in AT): home charging cost in South Carolina

In South Carolina, home electricity runs 16.04¢/kWh — put a 2027 Rivian R1S Premium Long Range (20in AT)'s EPA-rated 43.2 kWh/100mi against that and 100 miles costs $6.93, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 56.7% less than gas per mile, here specifically.

2027 Rivian R1S Premium Long Range (20in AT): yearly cost in South Carolina

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2027 Rivian R1S Premium Long Range (20in AT) charged at home in South Carolina costs about $1,040/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,363 a year.

Cost of a full charge

A 2027 Rivian R1S Premium Long Range (20in AT) needs roughly 159.9 kWh to reach its EPA-rated 370-mile range, which runs about $25.65 at 16.04¢/kWh in South Carolina.

2027 Rivian R1S Premium Long Range (20in AT) in South Carolina, ranked

This combination ranks 12,919 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Premium Long Range (20in AT) alone ranks 331 of 400 models for efficiency; South Carolina alone ranks 27 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.

Get quotes from local electricians for Level 2 charger installation in South Carolina before deciding.

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. At 16.04¢/kWh, South Carolina sits in the middle of the national range — the guide to why charging cost varies by state shows where.