Iowa home charging cost for the 2026 Rivian R1S Performance Dual Large (22in)

At Iowa's residential electricity rate of 13.77¢/kWh, a 2026 Rivian R1S Performance Dual Large (22in) (rated 39.5 kWh per 100 miles by the EPA) costs $5.44 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. Charging at home costs a fraction of what gas would here: 66.1% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1S Performance Dual Large (22in) costs roughly $815 a year to charge at home in Iowa, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,588 a year.

Filling up the 2026 Rivian R1S Performance Dual Large (22in), in dollars

Covering the 2026 Rivian R1S Performance Dual Large (22in)'s EPA-rated 329-mile range takes about 129.9 kWh, which costs about $17.88 at Iowa's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

Where this ranks

This combination ranks 6,613 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Performance Dual Large (22in) alone ranks 251 of 400 models for efficiency; Iowa alone ranks 9 of 51 states for electricity price.

Next step: home charger installation

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

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

Where these figures come from

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.