What it costs to charge a 2027 Rivian R1S Performance (20in AT) in Iowa

In Iowa, home electricity runs 13.77¢/kWh — put a 2027 Rivian R1S Performance (20in AT)'s EPA-rated 49.8 kWh/100mi against that and 100 miles costs $6.86, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 57.2% 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 2027 Rivian R1S Performance (20in AT) in Iowa runs about $1,029 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,374 saved annually, at this mileage.

What one full charge costs

$22.58 — that's what Iowa's 13.77¢/kWh rate puts on the 164 kWh a 2027 Rivian R1S Performance (20in AT) needs for its full 329-mile EPA range.

2027 Rivian R1S Performance (20in AT) in Iowa, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Performance (20in AT) in Iowa ranks 12,650 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Performance (20in AT) ranks 386 of 400 EV models for raw efficiency, and Iowa ranks 9 of 51 for cheapest residential electricity.

Before you install a home charger in Iowa

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

See the methodology guide for exactly which EIA and EPA figures feed 2027 Rivian R1S Performance (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.