Charging a 2026 Rivian R1T Dual Large (20in) at home in Mississippi

At Mississippi's residential electricity rate of 15.35¢/kWh, a 2026 Rivian R1T Dual Large (20in) (rated 42.9 kWh per 100 miles by the EPA) costs $6.58 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 58.9% cheaper per mile than gasoline in Mississippi — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Mississippi owners putting 15,000 annual miles on a 2026 Rivian R1T Dual Large (20in) spend about $987 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,416 saved annually, at this mileage.

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

At Mississippi's rate, fully covering this 2026 Rivian R1T Dual Large (20in)'s 300-mile EPA range costs about $19.74 (128.6 kWh) — the energy the EPA test actually used, not the battery's rated size.

2026 Rivian R1T Dual Large (20in) in Mississippi, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1T Dual Large (20in) in Mississippi ranks 11,758 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T Dual Large (20in) ranks 318 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.

Line up a few Mississippi electrician quotes for Level 2 install before you commit either way.

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.