What it costs to charge a 2026 Rivian R1T All-Terrain Performance Dual Max (20in) in Mississippi
A 2026 Rivian R1T All-Terrain Performance Dual Max (20in) draws 43.2 kWh per 100 miles per the EPA; at Mississippi's 15.35¢/kWh residential rate that's $6.64 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 58.6% cheaper per mile than gasoline in Mississippi — charging at home is much cheaper than gas here.
What a year of driving costs
Home charging this 2026 Rivian R1T All-Terrain Performance Dual Max (20in) in Mississippi runs about $995 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,408 saved annually, at this mileage.
What one full charge costs
$24.55 — that's what Mississippi's 15.35¢/kWh rate puts on the 159.9 kWh a 2026 Rivian R1T All-Terrain Performance Dual Max (20in) needs for its full 370-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 Performance Dual Max (20in) in Mississippi ranks 11,967 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T All-Terrain Performance Dual Max (20in) ranks 336 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 Performance Dual Max (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.
Ask a licensed Mississippi electrician to quote the install before this math becomes a real decision.
More on how this number was built
The methodology guide names the exact EIA and EPA tables behind this page's numbers. At 15.35¢/kWh, Mississippi sits in the middle of the national range — the guide to why charging cost varies by state shows where.