2027 Rivian R1S Premium (22in): home charging cost in Iowa

A 2027 Rivian R1S Premium (22in) draws 39.5 kWh per 100 miles per the EPA; at Iowa's 13.77¢/kWh residential rate that's $5.44 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. 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

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2027 Rivian R1S Premium (22in) charged at home in Iowa costs about $815/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,588 a year.

What one full charge costs

A 2027 Rivian R1S Premium (22in) needs roughly 129.9 kWh to reach its EPA-rated 329-mile range, which runs about $17.88 at 13.77¢/kWh in Iowa.

How this compares nationally

This combination ranks 6,611 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Premium (22in) alone ranks 249 of 400 models for efficiency; Iowa alone ranks 9 of 51 states for electricity price.

Getting set up to charge a 2027 Rivian R1S Premium (22in) at home

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.

Ask a licensed Iowa electrician to quote the install before this math becomes a real decision.

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Curious how Iowa's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.