Charging a 2027 Subaru Solterra 20 AWD at home in Tennessee

A 2027 Subaru Solterra 20 AWD draws 28.9 kWh per 100 miles per the EPA; at Tennessee's 13.9¢/kWh residential rate that's $4.02 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 74.9% cheaper per mile than gasoline in Tennessee — charging at home costs a fraction of what gas would here.

Annual cost, at 15 thousands miles a year

Tennessee owners putting 15,000 annual miles on a 2027 Subaru Solterra 20 AWD spend about $603 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,800 saved annually, at this mileage.

Filling up the 2027 Subaru Solterra 20 AWD, in dollars

At Tennessee's rate, fully covering this 2027 Subaru Solterra 20 AWD's 278-mile EPA range costs about $11.18 (80.4 kWh) — the energy the EPA test actually used, not the battery's rated size.

2027 Subaru Solterra 20 AWD in Tennessee, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Subaru Solterra 20 AWD in Tennessee ranks 990 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 Tennessee ranks 13 of 51 for cheapest residential electricity.

Before you install a home charger in Tennessee

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.

Ask a licensed Tennessee electrician to quote the install before this math becomes a real decision.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. At 13.9¢/kWh, Tennessee sits in the middle of the national range — the guide to why charging cost varies by state shows where.