Charging a 2026 Rivian R1S Dual Large Plus (20in) at home in South Carolina

In South Carolina, home electricity runs 16.04¢/kWh — put a 2026 Rivian R1S Dual Large Plus (20in)'s EPA-rated 43.1 kWh/100mi against that and 100 miles costs $6.92, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 56.8% cheaper per mile than gasoline in South Carolina — charging at home is much cheaper than gas here.

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

South Carolina owners putting 15,000 annual miles on a 2026 Rivian R1S Dual Large Plus (20in) spend about $1,038 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,365 saved annually, at this mileage.

Filling up the 2026 Rivian R1S Dual Large Plus (20in), in dollars

At South Carolina's rate, fully covering this 2026 Rivian R1S Dual Large Plus (20in)'s 317-mile EPA range costs about $21.93 (136.7 kWh) — the energy the EPA test actually used, not the battery's rated size.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Dual Large Plus (20in) in South Carolina ranks 12,875 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Dual Large Plus (20in) ranks 327 of 400 EV models for raw efficiency, and South Carolina ranks 27 of 51 for cheapest residential electricity.

Next step: home charger installation

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

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. South Carolina's 16.04¢/kWh rate ranks 27 of 51 states; the state rate guide lays out the full spread.