What it costs to charge a 2027 Rivian R1S Quad (22in) in Mississippi

In Mississippi, home electricity runs 15.35¢/kWh — put a 2027 Rivian R1S Quad (22in)'s EPA-rated 44.4 kWh/100mi against that and 100 miles costs $6.81, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 57.5% cheaper per mile than gasoline in Mississippi — charging at home is much cheaper than gas here.

2027 Rivian R1S Quad (22in): yearly cost in Mississippi

Home charging this 2027 Rivian R1S Quad (22in) in Mississippi runs about $1,022 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,381 saved annually, at this mileage.

What one full charge costs

$25.47 — that's what Mississippi's 15.35¢/kWh rate puts on the 166 kWh a 2027 Rivian R1S Quad (22in) needs for its full 374-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Quad (22in) in Mississippi ranks 12,500 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Quad (22in) ranks 348 of 400 EV models for raw efficiency, and Mississippi ranks 22 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 Mississippi electrician to quote the install before this math becomes a real decision.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Curious how Mississippi's 15.35¢/kWh compares? The guide to charging cost by state ranks every state side by side.