Illinois home charging cost for the 2026 Cadillac OPTIQ AWD (11 kW Charger)

In Illinois, home electricity runs 19.22¢/kWh — put a 2026 Cadillac OPTIQ AWD (11 kW Charger)'s EPA-rated 34 kWh/100mi against that and 100 miles costs $6.54, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 59.2% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Cadillac OPTIQ AWD (11 kW Charger) costs roughly $981 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 $1,422 a year.

What one full charge costs

Covering the 2026 Cadillac OPTIQ AWD (11 kW Charger)'s EPA-rated 303-mile range takes about 103.1 kWh, which costs about $19.81 at Illinois's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

2026 Cadillac OPTIQ AWD (11 kW Charger) in Illinois, ranked

This combination ranks 11,563 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Cadillac OPTIQ AWD (11 kW Charger) alone ranks 125 of 400 models for efficiency; Illinois alone ranks 36 of 51 states for electricity price.

Before you install a home charger in Illinois

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.