Solar panel cost and savings in Walla Walla, Washington
Walla Walla sits at 46.07°N, 118.34°W in Washington, United States. A typical residential solar system there is sized at 7.5 kW, laid out as 17 panels of 440 W each, mounted at a 40 degree tilt facing the sun's midday path.
Based on PVGIS solar radiation data for Walla Walla's coordinates, that system produces an estimated 11,426 kWh in its first year. At the local electricity price of $0.18 per kWh (export $0.06 per kWh, daily supply charge $0.55), that generation is worth an estimated $1,247 a year to a household with typical usage patterns for a 3-person home.
Get a solar estimate for your home in Walla WallaIncentives in Walla Walla
No incentive currently applies to a system installed in Walla Walla.
Cost and payback
A typical system in Walla Walla costs an estimated $16,456 to $26,180 installed. With no incentive currently applying, that is also the net cost, and the system pays back in about 19 years at today's local electricity price.
These figures assume a typical 3-person household with no pool, electric vehicle or electric heating, and installation in 2026. Incentive schemes change, and one may apply here by the time you install. Electricity prices shown here are set at the country level. Incentive amounts, when present, use each scheme's national or regional scope as noted above, except where an incentive's value is itself calculated from Walla Walla's local solar zone; only the production and payback figures are calculated specifically for Walla Walla's coordinates.
Frequently asked questions
How much solar power can a typical home in Walla Walla generate?
A typical 7.5 kW system (17 panels) in Walla Walla produces an estimated 11,426 kWh a year, based on PVGIS solar radiation data for its coordinates.
What does solar cost in Walla Walla?
A typical system costs $16,456 to $26,180 installed. No incentive currently applies, so that is also the estimated net cost.
How long does solar take to pay back in Walla Walla?
At local electricity prices, a typical system in Walla Walla pays back in about 19 years, with estimated annual savings of $1,247.
Nearby locations
All solar pages in Washington · All solar pages in United States