What it costs to charge a 2026 Rivian R1S Dual Large Plus (22in) in Mississippi

At Mississippi's residential electricity rate of 15.35¢/kWh, a 2026 Rivian R1S Dual Large Plus (22in) (rated 40.9 kWh per 100 miles by the EPA) costs $6.28 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. That works out to 60.8% cheaper per mile than gasoline in Mississippi — charging at home is much cheaper than gas here.

2026 Rivian R1S Dual Large Plus (22in): yearly cost in Mississippi

Home charging this 2026 Rivian R1S Dual Large Plus (22in) in Mississippi runs about $942 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,461 saved annually, at this mileage.

What one full charge costs

$20.72 — that's what Mississippi's 15.35¢/kWh rate puts on the 135 kWh a 2026 Rivian R1S Dual Large Plus (22in) needs for its full 330-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Dual Large Plus (22in) in Mississippi ranks 10,610 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Dual Large Plus (22in) ranks 278 of 400 EV models for raw efficiency, and Mississippi ranks 22 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Rivian R1S Dual Large Plus (22in) 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.

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

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S Dual Large Plus (22in)'s cost in Mississippi. Mississippi's 15.35¢/kWh rate ranks 22 of 51 states; the state rate guide lays out the full spread.