Mississippi home charging cost for the 2026 Rivian R1S All-Terrain Dual Large (20in)

At Mississippi's residential electricity rate of 15.35¢/kWh, a 2026 Rivian R1S All-Terrain Dual Large (20in) (rated 44.4 kWh per 100 miles by the EPA) costs $6.81 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: 57.5% less than gas per mile, here specifically.

2026 Rivian R1S All-Terrain Dual Large (20in): yearly cost in Mississippi

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1S All-Terrain Dual Large (20in) costs roughly $1,021 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 $1,382 a year.

Cost of a full charge

Covering the 2026 Rivian R1S All-Terrain Dual Large (20in)'s EPA-rated 289-mile range takes about 128.2 kWh, which costs about $19.68 at Mississippi'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 12,504 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S All-Terrain Dual Large (20in) alone ranks 344 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.