What it costs to charge a 2027 Subaru Solterra 20 AWD in Massachusetts

In Massachusetts, home electricity runs 30.06¢/kWh — put a 2027 Subaru Solterra 20 AWD's EPA-rated 28.9 kWh/100mi against that and 100 miles costs $8.69, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 45.7% cheaper per mile than gasoline in Massachusetts — charging at home is much cheaper than gas here.

What a year of driving costs

Home charging this 2027 Subaru Solterra 20 AWD in Massachusetts runs about $1,304 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,099 saved annually, at this mileage.

What one full charge costs

$24.17 — that's what Massachusetts's 30.06¢/kWh rate puts on the 80.4 kWh a 2027 Subaru Solterra 20 AWD needs for its full 278-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Subaru Solterra 20 AWD in Massachusetts ranks 16,018 for cost savings versus gas — 1 being the best deal nationally. Separately, the Subaru Solterra 20 AWD ranks 35 of 400 EV models for raw efficiency, and Massachusetts ranks 49 of 51 for cheapest residential electricity.

Before you install a home charger in Massachusetts

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 Massachusetts electrician quotes for Level 2 install before you commit either way.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Massachusetts 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.