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

In Iowa, home electricity runs 13.77¢/kWh — put a 2026 Rivian R1S Performance Dual Max (20in)'s EPA-rated 42 kWh/100mi against that and 100 miles costs $5.78, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 63.9% cheaper per mile than gasoline in Iowa — charging at home is much cheaper than gas here.

What a year of driving costs

Home charging this 2026 Rivian R1S Performance Dual Max (20in) in Iowa runs about $867 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,536 saved annually, at this mileage.

What one full charge costs

$21.96 — that's what Iowa's 13.77¢/kWh rate puts on the 159.5 kWh a 2026 Rivian R1S Performance 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 Performance Dual Max (20in) in Iowa ranks 8,377 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Performance Dual Max (20in) ranks 299 of 400 EV models for raw efficiency, and Iowa ranks 9 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.

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

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Curious how Iowa's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.