2026 Rivian R1S Dual Standard (20in): home charging cost in Missouri

At Missouri's residential electricity rate of 13.45¢/kWh, a 2026 Rivian R1S Dual Standard (20in) (rated 42.9 kWh per 100 miles by the EPA) costs $5.77 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: 64% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Rivian R1S Dual Standard (20in) charged at home in Missouri costs about $865/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,538 a year.

Filling up the 2026 Rivian R1S Dual Standard (20in), in dollars

A 2026 Rivian R1S Dual Standard (20in) needs roughly 110.6 kWh to reach its EPA-rated 258-mile range, which runs about $14.88 at 13.45¢/kWh in Missouri.

How this compares nationally

This combination ranks 8,309 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Dual Standard (20in) alone ranks 312 of 400 models for efficiency; Missouri alone ranks 7 of 51 states for electricity price.

Next step: home charger installation

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.

Get quotes from local electricians for Level 2 charger installation in Missouri before deciding.

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Missouri's 13.45¢/kWh rate ranks 7 of 51 states; the state rate guide lays out the full spread.