Charging a 2027 Rivian R1S Quad (20in AT) at home in Missouri

At Missouri's residential electricity rate of 13.45¢/kWh, a 2027 Rivian R1S Quad (20in AT) (rated 50.1 kWh per 100 miles by the EPA) costs $6.74 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 57.9% cheaper per mile than gasoline in Missouri — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Missouri owners putting 15,000 annual miles on a 2027 Rivian R1S Quad (20in AT) spend about $1,011 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,392 saved annually, at this mileage.

What one full charge costs

At Missouri's rate, fully covering this 2027 Rivian R1S Quad (20in AT)'s 325-mile EPA range costs about $21.9 (162.8 kWh) — the energy the EPA test actually used, not the battery's rated size.

2027 Rivian R1S Quad (20in AT) in Missouri, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Quad (20in AT) in Missouri ranks 12,311 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Quad (20in AT) ranks 390 of 400 EV models for raw efficiency, and Missouri ranks 7 of 51 for cheapest residential electricity.

Next step: home charger installation

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.