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

A 2026 Rivian R1S Performance Dual Max (20in) draws 42 kWh per 100 miles per the EPA; at Missouri's 13.45¢/kWh residential rate that's $5.65 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is much cheaper than gas here: 64.8% 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 Performance Dual Max (20in) charged at home in Missouri costs about $847/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,556 a year.

What one full charge costs

A 2026 Rivian R1S Performance Dual Max (20in) needs roughly 159.5 kWh to reach its EPA-rated 380-mile range, which runs about $21.45 at 13.45¢/kWh in Missouri.

Where this ranks

This combination ranks 7,622 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Performance Dual Max (20in) alone ranks 299 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.

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

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Missouri's 13.45¢/kWh rate ranks 7 of 51 states; the state rate guide lays out the full spread.