Charging a 2026 Rivian R1S All-Terrain Performance Dual Large (20in) at home in South Carolina

A 2026 Rivian R1S All-Terrain Performance Dual Large (20in) draws 44.4 kWh per 100 miles per the EPA; at South Carolina's 16.04¢/kWh residential rate that's $7.12 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 55.6% 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

South Carolina owners putting 15,000 annual miles on a 2026 Rivian R1S All-Terrain Performance Dual Large (20in) spend about $1,067 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,336 saved annually, at this mileage.

Cost of a full charge

At South Carolina's rate, fully covering this 2026 Rivian R1S All-Terrain Performance Dual Large (20in)'s 289-mile EPA range costs about $20.56 (128.2 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S All-Terrain Performance Dual Large (20in) in South Carolina ranks 13,320 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S All-Terrain Performance Dual Large (20in) ranks 345 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

The methodology guide names the exact EIA and EPA tables behind this page's numbers. South Carolina's 16.04¢/kWh rate ranks 27 of 51 states; the state rate guide lays out the full spread.