What it costs to charge a 2026 Rivian R1T Tri Max (22in) in Mississippi

A 2026 Rivian R1T Tri Max (22in) draws 44.6 kWh per 100 miles per the EPA; at Mississippi's 15.35¢/kWh residential rate that's $6.84 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 57.3% cheaper per mile than gasoline in Mississippi — charging at home is much cheaper than gas here.

2026 Rivian R1T Tri Max (22in): yearly cost in Mississippi

Home charging this 2026 Rivian R1T Tri Max (22in) in Mississippi runs about $1,026 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,377 saved annually, at this mileage.

Cost of a full charge

$25.38 — that's what Mississippi's 15.35¢/kWh rate puts on the 165.4 kWh a 2026 Rivian R1T Tri Max (22in) needs for its full 371-mile EPA range.

2026 Rivian R1T Tri Max (22in) in Mississippi, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1T Tri Max (22in) in Mississippi ranks 12,606 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T Tri Max (22in) ranks 357 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 Tri Max (22in) 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.

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

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1T Tri Max (22in)'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.