What it costs to charge a 2026 Cadillac OPTIQ RWD (11 kW Charger) in Hawaii

At Hawaii's residential electricity rate of 45.95¢/kWh, a 2026 Cadillac OPTIQ RWD (11 kW Charger) (rated 32.1 kWh per 100 miles by the EPA) costs $14.74 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 8% cheaper per mile than gasoline in Hawaii — charging at home costs a little less than gas here.

What a year of driving costs

Home charging this 2026 Cadillac OPTIQ RWD (11 kW Charger) in Hawaii runs about $2,211 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $192 saved annually, at this mileage.

Cost of a full charge

$46.73 — that's what Hawaii's 45.95¢/kWh rate puts on the 101.7 kWh a 2026 Cadillac OPTIQ RWD (11 kW Charger) needs for its full 317-mile EPA range.

2026 Cadillac OPTIQ RWD (11 kW Charger) in Hawaii, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Cadillac OPTIQ RWD (11 kW Charger) in Hawaii ranks 19,972 for cost savings versus gas — 1 being the best deal nationally. Separately, the Cadillac OPTIQ RWD (11 kW Charger) ranks 90 of 400 EV models for raw efficiency, and Hawaii ranks 51 of 51 for cheapest residential electricity.

Before you install a home charger in Hawaii

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.

Line up a few Hawaii electrician quotes for Level 2 install before you commit either way.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. 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.