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

In Mississippi, home electricity runs 15.35¢/kWh — put a 2026 Rivian R1S Quad Max (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. Charging at home is much cheaper than gas here: 57.5% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1S Quad Max (22in) costs roughly $1,022 a year to charge at home in Mississippi, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,381 a year.

Filling up the 2026 Rivian R1S Quad Max (22in), in dollars

Covering the 2026 Rivian R1S Quad Max (22in)'s EPA-rated 374-mile range takes about 166 kWh, which costs about $25.47 at Mississippi's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

2026 Rivian R1S Quad Max (22in) in Mississippi, ranked

This combination ranks 12,506 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; 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.

Get quotes from local electricians for Level 2 charger installation in Mississippi before deciding.

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. At 15.35¢/kWh, Mississippi sits in the middle of the national range — the guide to why charging cost varies by state shows where.