Charging a 2026 Rivian R1S All-Terrain Dual Max (20in) at home in Illinois

In Illinois, home electricity runs 19.22¢/kWh — put a 2026 Rivian R1S All-Terrain Dual Max (20in)'s EPA-rated 43.2 kWh/100mi against that and 100 miles costs $8.31, versus $16.02 for a gas car averaging 25.5 mpg. 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

Illinois owners putting 15,000 annual miles on a 2026 Rivian R1S All-Terrain Dual Max (20in) spend about $1,246 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,157 saved annually, at this mileage.

Filling up the 2026 Rivian R1S All-Terrain Dual Max (20in), in dollars

At Illinois's rate, fully covering this 2026 Rivian R1S All-Terrain Dual Max (20in)'s 370-mile EPA range costs about $30.74 (159.9 kWh) — the energy the EPA test actually used, not the battery's rated size.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S All-Terrain Dual Max (20in) in Illinois ranks 15,528 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S All-Terrain Dual Max (20in) ranks 333 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

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Curious how Illinois's 19.22¢/kWh compares? The guide to charging cost by state ranks every state side by side.