Solar panel yield in Walla Walla

Each kWp of solar panels in Walla Walla, at the best angle of 40°, produces about 1,532 kWh of electricity a year – worth $224 at today's household electricity price.

Yield per kWp
1,532 kWh
per year
Value per kWp
$224
if used at home, at today's tariff
Versus the United States average
+0%
1,530 kWh
Solar rank in the United States
1,104 of 4,349

Monthly yield of 1 kWp

JanFebMarAprMayJunJulAugSepOctNovDec
Long-term average monthly production (PVGIS), panels facing south at the optimal angle, 14 % system losses.
Show the data as a table
MonthkWh
Jan83
Feb100
Mar132
Apr148
May154
Jun151
Jul173
Aug169
Sep149
Oct120
Nov83
Dec71

A typical 5 kWp home system

A 5 kWp system in Walla Walla would produce about 7,660 kWh a year – 306% of the 2,500 kWh our default home uses.

Payback

How fast a system pays for itself depends on its price, how much of the power you use yourself and the feed-in tariff. Try your own numbers: Solar payback calculator →

Cost of running a home in Walla Walla →

Source: PVGIS © European Union, 2001–2026.

Updated: