2027 Rivian R1S Performance (22in): home charging cost in Mississippi

At Mississippi's residential electricity rate of 15.35¢/kWh, a 2027 Rivian R1S Performance (22in) (rated 44.6 kWh per 100 miles by the EPA) costs $6.84 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. Charging at home is much cheaper than gas here: 57.3% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2027 Rivian R1S Performance (22in) charged at home in Mississippi costs about $1,026/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,377 a year.

Filling up the 2027 Rivian R1S Performance (22in), in dollars

A 2027 Rivian R1S Performance (22in) needs roughly 165.4 kWh to reach its EPA-rated 371-mile range, which runs about $25.38 at 15.35¢/kWh in Mississippi.

How this compares nationally

This combination ranks 12,603 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Performance (22in) alone ranks 354 of 400 models for efficiency; Mississippi alone ranks 22 of 51 states for electricity price.

Before you install a home charger in Mississippi

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.

Ask a licensed Mississippi electrician to quote the install before this math becomes a real decision.

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2027 Rivian R1S Performance (22in)'s cost in Mississippi. Curious how Mississippi's 15.35¢/kWh compares? The guide to charging cost by state ranks every state side by side.