Delaware home charging cost for the 2027 Subaru Solterra 20 AWD

A 2027 Subaru Solterra 20 AWD draws 28.9 kWh per 100 miles per the EPA; at Delaware's 17.74¢/kWh residential rate that's $5.13 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 fraction of what gas would here: 68% 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 $770 a year to charge at home in Delaware, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,633 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 $14.26 at Delaware'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 5,094 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; Delaware alone ranks 33 of 51 states for electricity price.

Before you install a home charger in Delaware

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

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2027 Subaru Solterra 20 AWD's cost in Delaware. At 17.74¢/kWh, Delaware sits in the middle of the national range — the guide to why charging cost varies by state shows where.