What it costs to charge a 2026 Rivian R1S Performance Dual Large (20in) in South Carolina

A 2026 Rivian R1S Performance Dual Large (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.

2026 Rivian R1S Performance Dual Large (20in): yearly cost in South Carolina

Home charging this 2026 Rivian R1S Performance Dual Large (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.

What one full charge costs

$20.63 — that's what South Carolina's 16.04¢/kWh rate puts on the 128.6 kWh a 2026 Rivian R1S Performance Dual Large (20in) needs for its full 300-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Performance Dual Large (20in) in South Carolina ranks 12,732 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Performance Dual Large (20in) ranks 317 of 400 EV models for raw efficiency, and South Carolina ranks 27 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Rivian R1S Performance Dual Large (20in) at home

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.

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

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S Performance Dual Large (20in)'s cost in South Carolina. South Carolina's 16.04¢/kWh rate ranks 27 of 51 states; the state rate guide lays out the full spread.