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

A 2026 Cadillac OPTIQ AWD (11 kW Charger) draws 34 kWh per 100 miles per the EPA; at Hawaii's 45.95¢/kWh residential rate that's $15.63 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home costs a little less than gas here: 2.4% 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 $2,345 a year to charge at home in Hawaii, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $58 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 $47.37 at Hawaii's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

Where this ranks

This combination ranks 20,065 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; Hawaii alone ranks 51 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 Hawaii electrician to quote the install before this math becomes a real decision.

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Hawaii has some of the highest residential electricity rates in the country — see the guide to why the cost varies so much by state for the full picture.