Charging a 2026 Rivian R1T Performance Dual Large (20in) at home in Iowa
At Iowa's residential electricity rate of 13.77¢/kWh, a 2026 Rivian R1T Performance Dual Large (20in) (rated 42.9 kWh per 100 miles by the EPA) costs $5.9 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. That works out to 63.1% cheaper per mile than gasoline in Iowa — charging at home is much cheaper than gas here.
What a year of driving costs
Iowa owners putting 15,000 annual miles on a 2026 Rivian R1T Performance Dual Large (20in) spend about $886 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,517 saved annually, at this mileage.
Cost of a full charge
At Iowa's rate, fully covering this 2026 Rivian R1T Performance Dual Large (20in)'s 300-mile EPA range costs about $17.71 (128.6 kWh) — the energy the EPA test actually used, not the battery's rated size.
2026 Rivian R1T Performance Dual Large (20in) in Iowa, ranked
Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1T Performance Dual Large (20in) in Iowa ranks 8,957 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T Performance Dual Large (20in) ranks 319 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 2026 Rivian R1T Performance Dual Large (20in)'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.