What it costs to charge a 2026 Rivian R1S Quad Max (20in AT) in Iowa

A 2026 Rivian R1S Quad Max (20in AT) draws 50.1 kWh per 100 miles per the EPA; at Iowa's 13.77¢/kWh residential rate that's $6.9 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 56.9% cheaper per mile than gasoline in Iowa — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Home charging this 2026 Rivian R1S Quad Max (20in AT) in Iowa runs about $1,035 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,368 saved annually, at this mileage.

What one full charge costs

$22.42 — that's what Iowa's 13.77¢/kWh rate puts on the 162.8 kWh a 2026 Rivian R1S Quad Max (20in AT) needs for its full 325-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Quad Max (20in AT) in Iowa ranks 12,795 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Quad Max (20in AT) ranks 392 of 400 EV models for raw efficiency, and Iowa ranks 9 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Rivian R1S Quad Max (20in AT) at home

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.

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

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S Quad Max (20in AT)'s cost in Iowa. At 13.77¢/kWh, Iowa sits in the middle of the national range — the guide to why charging cost varies by state shows where.