What it costs to charge a 2027 Rivian R1T Premium Long Range (20in AT) in Illinois

A 2027 Rivian R1T Premium Long Range (20in AT) draws 43.2 kWh per 100 miles per the EPA; at Illinois's 19.22¢/kWh residential rate that's $8.31 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 48.1% cheaper per mile than gasoline in Illinois — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Home charging this 2027 Rivian R1T Premium Long Range (20in AT) in Illinois runs about $1,246 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,157 saved annually, at this mileage.

Cost of a full charge

$30.74 — that's what Illinois's 19.22¢/kWh rate puts on the 159.9 kWh a 2027 Rivian R1T Premium Long Range (20in AT) needs for its full 370-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1T Premium Long Range (20in AT) in Illinois ranks 15,527 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T Premium Long Range (20in AT) ranks 332 of 400 EV models for raw efficiency, and Illinois ranks 36 of 51 for cheapest residential electricity.

Before you install a home charger in Illinois

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 Illinois 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. At 19.22¢/kWh, Illinois sits in the middle of the national range — the guide to why charging cost varies by state shows where.