Hawaii home charging cost for the 2026 Volvo EX90 (21 Inch Wheels)

In Hawaii, home electricity runs 45.95¢/kWh — put a 2026 Volvo EX90 (21 Inch Wheels)'s EPA-rated 34.5 kWh/100mi against that and 100 miles costs $15.84, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home costs a little less than gas here: 1.1% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Volvo EX90 (21 Inch Wheels) costs roughly $2,375 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 $27 a year.

What one full charge costs

Covering the 2026 Volvo EX90 (21 Inch Wheels)'s EPA-rated 291-mile range takes about 100.3 kWh, which costs about $46.08 at Hawaii'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 20,087 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Volvo EX90 (21 Inch Wheels) alone ranks 135 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.

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

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.