South Carolina home charging cost for the 2026 Rivian R1S Quad Max (22in)

In South Carolina, home electricity runs 16.04¢/kWh — put a 2026 Rivian R1S Quad Max (22in)'s EPA-rated 44.4 kWh/100mi against that and 100 miles costs $7.12, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 55.6% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1S Quad Max (22in) costs roughly $1,068 a year to charge at home in South Carolina, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,335 a year.

What one full charge costs

Covering the 2026 Rivian R1S Quad Max (22in)'s EPA-rated 374-mile range takes about 166 kWh, which costs about $26.62 at South Carolina's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 13,321 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Quad Max (22in) alone ranks 350 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 Quad Max (22in) 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

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S Quad Max (22in)'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.