What it costs to charge a 2026 Rivian R1T All-Terrain Dual Large (20in) in Mississippi

At Mississippi's residential electricity rate of 15.35¢/kWh, a 2026 Rivian R1T 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. That works out to 57.5% cheaper per mile than gasoline in Mississippi — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Home charging this 2026 Rivian R1T All-Terrain Dual Large (20in) in Mississippi runs about $1,021 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,382 saved annually, at this mileage.

Filling up the 2026 Rivian R1T All-Terrain Dual Large (20in), in dollars

$19.68 — that's what Mississippi's 15.35¢/kWh rate puts on the 128.2 kWh a 2026 Rivian R1T All-Terrain Dual Large (20in) needs for its full 289-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1T All-Terrain Dual Large (20in) in Mississippi ranks 12,507 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T All-Terrain Dual Large (20in) ranks 346 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 R1T All-Terrain Dual Large (20in) 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 R1T All-Terrain Dual Large (20in)'s cost in Mississippi. At 15.35¢/kWh, Mississippi sits in the middle of the national range — the guide to why charging cost varies by state shows where.