2027 Subaru Solterra 20 AWD, HI Charging Cost

Hawaii home charging cost for the 2027 Subaru Solterra 20 AWD

At Hawaii's residential electricity rate of 45.95¢/kWh, a 2027 Subaru Solterra 20 AWD (rated 28.9 kWh per 100 miles by the EPA) costs $13.29 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. Charging at home is cheaper than gas here: 17% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2027 Subaru Solterra 20 AWD costs roughly $1,993 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 $409 a year.

What one full charge costs

Covering the 2027 Subaru Solterra 20 AWD's EPA-rated 278-mile range takes about 80.4 kWh, which costs about $36.95 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 19,632 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Subaru Solterra 20 AWD alone ranks 35 of 400 models for efficiency; Hawaii alone ranks 51 of 51 states for electricity price.

Getting set up to charge a 2027 Subaru Solterra 20 AWD at home

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 Hawaii before deciding.

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.