Charging a 2026 Rivian R1T Dual Large (20in) at home in Illinois

At Illinois's residential electricity rate of 19.22¢/kWh, a 2026 Rivian R1T Dual Large (20in) (rated 42.9 kWh per 100 miles by the EPA) costs $8.24 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 48.6% cheaper per mile than gasoline in Illinois — charging at home is much cheaper than gas here.

What a year of driving costs

Illinois owners putting 15,000 annual miles on a 2026 Rivian R1T Dual Large (20in) spend about $1,236 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,167 saved annually, at this mileage.

What one full charge costs

At Illinois's rate, fully covering this 2026 Rivian R1T Dual Large (20in)'s 300-mile EPA range costs about $24.72 (128.6 kWh) — the energy the EPA test actually used, not the battery's rated size.

2026 Rivian R1T Dual Large (20in) in Illinois, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1T Dual Large (20in) in Illinois ranks 15,397 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T Dual Large (20in) ranks 318 of 400 EV models for raw efficiency, and Illinois ranks 36 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Rivian R1T Dual Large (20in) at home

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