Mississippi home charging cost for the 2026 Rivian R1S Performance Dual Large Plus (22in)
At Mississippi's residential electricity rate of 15.35¢/kWh, a 2026 Rivian R1S Performance Dual Large Plus (22in) (rated 40.9 kWh per 100 miles by the EPA) costs $6.28 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: 60.8% less than gas per mile, here specifically.
What a year of driving costs
At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1S Performance Dual Large Plus (22in) costs roughly $942 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 $1,461 a year.
What one full charge costs
Covering the 2026 Rivian R1S Performance Dual Large Plus (22in)'s EPA-rated 330-mile range takes about 135 kWh, which costs about $20.72 at Mississippi's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.
2026 Rivian R1S Performance Dual Large Plus (22in) in Mississippi, ranked
This combination ranks 10,611 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Performance Dual Large Plus (22in) alone ranks 279 of 400 models for efficiency; Mississippi alone ranks 22 of 51 states for electricity price.
Getting set up to charge a 2026 Rivian R1S Performance Dual Large Plus (22in) at home
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.
Line up a few Mississippi electrician quotes for Level 2 install before you commit either way.
Where these figures come from
The methodology guide names the exact EIA and EPA tables behind this page's numbers. Mississippi's 15.35¢/kWh rate ranks 22 of 51 states; the state rate guide lays out the full spread.