How much does it cost to charge a Subaru Solterra?

A full charge for a 2026–2027 Subaru Solterra AWD, 18-inch wheels costs about $14.52 at home, at the US average residential electricity rate of 18¢/kWh. A 2023–2025 Subaru Solterra costs $12.72 to $13.19 to fill at the same rate, depending on version.

That full charge draws roughly 81 kWh from the wall and buys 288 miles of EPA-rated range — about $0.05 a mile. Filling up the 2026–2027 Subaru Solterra costs $9.96 in Idaho, the cheapest state, and $26.81 in California.

What it costs to charge a 2023–2025 Subaru Solterra

At the US average rate of 18¢/kWh, a full charge of a 2023–2025 Subaru Solterra costs $12.72 to $13.19 depending on version, against $14.52 for the 2026–2027 Subaru Solterra above. Per 100 miles it runs $5.58 to $5.94, against $5.04.

The 2023–2025 Solterra uses 11% to 18% more energy per mile than the 2026 car but costs less to fill, because its 222 to 228 miles of range take fewer kWh to cover. Unusually, the 2023 car is rated better than the 2024 and 2025 cars that followed it: 31 kWh per 100 miles against 32 for the base AWD, and 32 against 33 for the Limited and Touring. Every version is all-wheel drive, so there is no cheaper front-wheel-drive Solterra to fall back on.

EPA combined figures for each model year, from fueleconomy.gov, checked September 2026. Per month at 12,000 miles a year. Pick any of these versions in the calculator above to price it at your own rate.

What it costs at three real electricity rates

Your rate is the only input that really moves this number, so here is the same car at three real ones — the cheapest state, the national average, and the most expensive large mainland market.

Hawaii is higher still at 52¢ — a 4.2:1 spread from the cheapest state to the dearest. EPA figures checked September 2026; electricity rates checked August 2026.

What it costs per mile

A Subaru Solterra costs about $0.05 a mile to charge at home at the US average electricity rate, or $5.04 per 100 miles. That is energy only — the EPA rates this car at 28 kWh per 100 miles measured at the wall socket, so charging losses are already inside the figure and should not be added again.

Per mile is the number that survives a change of car: it does not care about battery size, so it is the only fair way to line this car up against one with a much bigger or smaller pack.

What it adds to your electricity bill

Charging a Subaru Solterra at home adds about $50 a month to your electricity bill at the US average rate, driving 12,000 miles a year. That is the yearly cost of $605 spread evenly across twelve months — a month with a road trip in it costs more, and a quiet one costs less.

Nothing else on the bill changes: the car draws the same kilowatt-hours whatever else is running in the house, so the increase is the charging and nothing more.

At the cheapest state rate the same driving adds $35 a month, and $93 at the most expensive — the table above has all three. If your utility offers an overnight or time-of-use rate, charging on it lands at the low end rather than the middle.

Where the numbers come from

The EPA rates this AWD, 18-inch wheels at 28 kWh per 100 miles with 288 miles of combined range. Those two figures together give the energy for a full charge, which is where the 81 kWh above comes from.

We work it out that way rather than quoting a battery size on purpose. Manufacturers publish gross capacity, which includes a buffer at each end of the pack that never takes a charge, so a cost built on it overstates your bill. And the EPA measures at the wall socket rather than at the battery, so charging losses are already inside the figure — no need to add them, and adding them would count the same loss twice.

What this means for this car

The Solterra is the Toyota bZ with a Subaru badge, and at the socket the two are indistinguishable: the EPA rates the Solterra at 28 kWh per 100 miles with 288 miles of range, the same figures as the all-wheel-drive bZ. What Subaru does not offer is the bZ’s front-wheel-drive version, rated 26. Every Solterra is all-wheel drive, so the cheapest way to run this platform is not available with a Subaru badge, and the Solterra uses about 8% more energy per mile than that front-wheel-drive Toyota. In the EPA listings, wheel size is the only thing that moves the figure: the Solterra on 20-inch wheels is rated 29 kWh per 100 miles with 278 miles of range, about 4% more energy per mile. At 28 it is still one of the more efficient all-wheel-drive SUVs on this site, ahead of an all-wheel-drive Ioniq 5 or EV6 at 32 and level with the front-wheel-drive Nissan Leaf. The 2026 update matters most to used buyers: a 2024 or 2025 Solterra is rated 32 or 33 and covers about 225 miles, so the newer car goes further on each kWh as well as further on a charge.

How it compares

All at 18¢/kWh and 12,000 miles a year. The gas comparison is illustrative — it is not a claim about any particular car.

Figures are for the 2026–2027 Subaru Solterra AWD, 18-inch wheels, plus the 2023–2025 Subaru Solterra versions tabled above. Other trims of the same car are rated differently — see above. How these figures are calculated.