What it costs to charge a 2026 Rivian R1S Dual Max (20in) in Missouri

At Missouri's residential electricity rate of 13.45¢/kWh, a 2026 Rivian R1S Dual Max (20in) (rated 42 kWh per 100 miles by the EPA) costs $5.65 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. That works out to 64.8% cheaper per mile than gasoline in Missouri — charging at home is much cheaper than gas here.

What a year of driving costs

Home charging this 2026 Rivian R1S Dual Max (20in) in Missouri runs about $847 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,556 saved annually, at this mileage.

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

$21.45 — that's what Missouri's 13.45¢/kWh rate puts on the 159.5 kWh a 2026 Rivian R1S Dual Max (20in) needs for its full 380-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Dual Max (20in) in Missouri ranks 7,621 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Dual Max (20in) ranks 298 of 400 EV models for raw efficiency, and Missouri ranks 7 of 51 for cheapest residential electricity.

Before you install a home charger in Missouri

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 Missouri electrician to quote the install before this math becomes a real decision.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Curious how Missouri's 13.45¢/kWh compares? The guide to charging cost by state ranks every state side by side.