What it costs to charge a 2026 Rivian R1S Performance Dual Large Plus (22in) in Iowa

A 2026 Rivian R1S Performance Dual Large Plus (22in) draws 40.9 kWh per 100 miles per the EPA; at Iowa's 13.77¢/kWh residential rate that's $5.63 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 64.8% 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 Performance Dual Large Plus (22in) in Iowa runs about $845 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,558 saved annually, at this mileage.

Cost of a full charge

$18.59 — that's what Iowa's 13.77¢/kWh rate puts on the 135 kWh a 2026 Rivian R1S Performance Dual Large Plus (22in) needs for its full 330-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Performance Dual Large Plus (22in) in Iowa ranks 7,602 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Performance Dual Large Plus (22in) ranks 279 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 Performance Dual Large Plus (22in) 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.

Ask a licensed Iowa 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. Iowa's 13.77¢/kWh rate ranks 9 of 51 states; the state rate guide lays out the full spread.