Solar in Spokane Valley, WA
With Avista's electricity at about 14.3¢ per kWh and 1,236 kWh of sun per kW, solar is a close call for a typical Spokane Valley home today: about a 14.7-year payback.
- Payback, typical home
- 14.7 yrsWashington: 16.2 yrs
- 25-year net
- $21,191after paying $20,185
- Sun
- 1,236kWh per kW per year
- Electricity
- 14.3¢20% below U.S. average
A typical Spokane Valley home, by the numbers
| Utility | Avista |
|---|---|
| Electricity use | 916 kWh a month |
| Best-value system | 7.1 kW, about 17 panels, 8,779 kWh a year (80% of use) |
| Cost | $20,185 |
| First-year savings | $1,257 |
| Payback | 14.7 years |
| Exported power | Full retail net metering (Avista) |
Cash purchase, no federal credit, 3.8% yearly rate increases. Run it with your own numbers.
Homes in Spokane Valley
- Owner-occupied homes
- 58%
- Single-family detached
- 60%
- Median home value
- $382k
- Median year built
- 1979
- Population
- 106,365
- Roofs suitable for solar†
- 82%
Census ACS 2020–2024. †Share of 29,917 buildings Google Project Sunroof rated technically suitable (2019 snapshot).
Installers working in Spokane Valley
Public installation records for Washington don't name installers, so we can't rank local companies here. Browse installers in Washington.
Always verify the license and get at least three quotes. Compare quotes side by side.
Questions about solar in Spokane Valley
Is solar worth it in Spokane Valley, WA?
For a typical home in Spokane Valley, solar is a close call at 2026 prices: a 7.1 kW system costs about $20,185 after state incentives, saves about $1,257 in year one and pays back in about 14.7 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in Spokane Valley?
About 1,236 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 12% more than the Washington average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in Spokane Valley?
Most homes in Spokane Valley are served by Avista, at about 14.3¢ per kWh on average. Some areas are served by Inland Power & Light, Vera Irrigation District #15.
How much do solar panels cost in Spokane Valley?
A fair cash price is around $2.85 per watt before incentives, so about $20,185 for a 7.1 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- Spokane 14.5 yrs
- Pullman 14.4 yrs
- Moses Lake no payback
- Walla Walla 13.8 yrs
- Pasco 17.2 yrs
- Richland 20.1 yrs
- Kennewick 19.9 yrs
- Wenatchee no payback
- All of Washington
Data: PVWatts (National Laboratory of the Rockies), EIA-861 2025 adjusted to 2026, U.S. Census ACS, LBNL Tracking the Sun, state policy research as of October 2026.