Illinois home charging cost for the 2027 Cadillac OPTIQ RWD 19kW Charger

In Illinois, home electricity runs 19.22¢/kWh — put a 2027 Cadillac OPTIQ RWD 19kW 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.

2027 Cadillac OPTIQ RWD 19kW Charger: yearly cost in Illinois

At fueleconomy.gov's default of 15,000 annual miles, the 2027 Cadillac OPTIQ RWD 19kW 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.

Cost of a full charge

Covering the 2027 Cadillac OPTIQ RWD 19kW 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 10,179 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Cadillac OPTIQ RWD 19kW Charger alone ranks 89 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.

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

Where these figures come from

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.