2026 Rivian R1S Dual Large (20in): home charging cost in South Carolina

A 2026 Rivian R1S 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. Charging at home is much cheaper than gas here: 57.1% less than gas per mile, here specifically.

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

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Rivian R1S Dual Large (20in) charged at home in South Carolina costs about $1,031/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,371 a year.

Cost of a full charge

A 2026 Rivian R1S Dual Large (20in) needs roughly 128.6 kWh to reach its EPA-rated 300-mile range, which runs about $20.63 at 16.04¢/kWh in South Carolina.

How this compares nationally

This combination ranks 12,730 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Dual Large (20in) alone ranks 316 of 400 models for efficiency; South Carolina alone ranks 27 of 51 states for electricity price.

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

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.

Line up a few South Carolina electrician quotes for Level 2 install before you commit either way.

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.