What it costs to charge a 2027 Rivian R1S Premium (20in) in South Carolina

A 2027 Rivian R1S Premium (20in) draws 42.9 kWh per 100 miles per the EPA; at South Carolina's 16.04¢/kWh residential rate that's $6.88 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 57.1% cheaper per mile than gasoline in South Carolina — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Home charging this 2027 Rivian R1S Premium (20in) in South Carolina runs about $1,031 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,371 saved annually, at this mileage.

Cost of a full charge

$20.63 — that's what South Carolina's 16.04¢/kWh rate puts on the 128.6 kWh a 2027 Rivian R1S Premium (20in) needs for its full 300-mile EPA range.

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

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Premium (20in) in South Carolina ranks 12,728 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Premium (20in) ranks 314 of 400 EV models for raw efficiency, and South Carolina ranks 27 of 51 for cheapest residential electricity.

Before you install a home charger in South Carolina

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.

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

More on how this number was built

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