What it costs to charge a 2026 Cadillac OPTIQ RWD (19 kW Charger) in Illinois

At Illinois's residential electricity rate of 19.22¢/kWh, a 2026 Cadillac OPTIQ RWD (19 kW Charger) (rated 32.1 kWh per 100 miles by the EPA) costs $6.17 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 61.5% 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 2026 Cadillac OPTIQ RWD (19 kW Charger) in Illinois runs about $925 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,478 saved annually, at this mileage.

What one full charge costs

$19.55 — that's what Illinois's 19.22¢/kWh rate puts on the 101.7 kWh a 2026 Cadillac OPTIQ RWD (19 kW Charger) needs for its full 317-mile EPA range.

2026 Cadillac OPTIQ RWD (19 kW Charger) in Illinois, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Cadillac OPTIQ RWD (19 kW Charger) in Illinois ranks 10,181 for cost savings versus gas — 1 being the best deal nationally. Separately, the Cadillac OPTIQ RWD (19 kW Charger) ranks 91 of 400 EV models for raw efficiency, and Illinois ranks 36 of 51 for cheapest residential electricity.

Next step: home charger installation

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.

Get quotes from local electricians for Level 2 charger installation in Illinois before deciding.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Illinois's 19.22¢/kWh rate ranks 36 of 51 states; the state rate guide lays out the full spread.