Solar in Walla Walla, WA
With PacifiCorp (Rocky Mountain Power / Pacific Power)'s electricity at about 14.7¢ per kWh and 1,254 kWh of sun per kW, solar is worth it for a typical Walla Walla home today: about a 13.8-year payback.
- Payback, typical home
- 13.8 yrsWashington: 16.2 yrs
- 25-year net
- $29,902after paying $24,415
- Sun
- 1,254kWh per kW per year
- Electricity
- 14.7¢18% below U.S. average
A typical Walla Walla home, by the numbers
| Utility | PacifiCorp (Rocky Mountain Power / Pacific Power) |
|---|---|
| Electricity use | 1,164 kWh a month |
| Best-value system | 8.9 kW, about 21 panels, 11,162 kWh a year (80% of use) |
| Cost | $24,415 |
| First-year savings | $1,641 |
| Payback | 13.8 years |
| Exported power | 4.3¢/kWh (PacifiCorp (Rocky Mountain Power / Pacific Power)) |
Cash purchase, no federal credit, 3.8% yearly rate increases. Run it with your own numbers.
Homes in Walla Walla
- Owner-occupied homes
- 57%
- Single-family detached
- 63%
- Median home value
- $394k
- Median year built
- 1967
- Population
- 33,925
Census ACS 2020–2024.
Older housing stock. Many homes here were built before 1975. Have the roof and electrical panel checked before signing; a roof or panel upgrade can add thousands. Roof first?
Installers working in Walla Walla
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 Walla Walla
Is solar worth it in Walla Walla, WA?
For a typical home in Walla Walla, solar is worth it at 2026 prices: a 8.9 kW system costs about $24,415 after state incentives, saves about $1,641 in year one and pays back in about 13.8 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in Walla Walla?
About 1,254 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 13% more than the Washington average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in Walla Walla?
Most homes in Walla Walla are served by PacifiCorp (Rocky Mountain Power / Pacific Power), at about 14.7¢ per kWh on average.
How much do solar panels cost in Walla Walla?
A fair cash price is around $2.85 per watt before incentives, so about $24,415 for a 8.9 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- Pasco 17.2 yrs
- Kennewick 19.9 yrs
- Richland 20.1 yrs
- Pullman 14.4 yrs
- Moses Lake no payback
- Yakima 13 yrs
- Spokane 14.5 yrs
- Spokane Valley 14.7 yrs
- 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.