Illinois home charging cost for the 2027 Cadillac OPTIQ RWD 11kW Charger

In Illinois, home electricity runs 19.22¢/kWh — put a 2027 Cadillac OPTIQ RWD 11kW Charger's EPA-rated 32.1 kWh/100mi against that and 100 miles costs $6.17, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 61.5% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2027 Cadillac OPTIQ RWD 11kW Charger costs roughly $925 a year to charge at home in Illinois, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,478 a year.

Filling up the 2027 Cadillac OPTIQ RWD 11kW Charger, in dollars

Covering the 2027 Cadillac OPTIQ RWD 11kW Charger's EPA-rated 317-mile range takes about 101.7 kWh, which costs about $19.55 at Illinois's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 10,178 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Cadillac OPTIQ RWD 11kW Charger alone ranks 88 of 400 models for efficiency; Illinois alone ranks 36 of 51 states for electricity price.

Next step: home charger installation

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

Ask a licensed Illinois electrician to quote the install before this math becomes a real decision.

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2027 Cadillac OPTIQ RWD 11kW Charger's cost in Illinois. Curious how Illinois's 19.22¢/kWh compares? The guide to charging cost by state ranks every state side by side.