{"$A":{"ap":"What do solar panels cost in Walla Walla County, WA?","aq":"The average solar panel cost in Walla Walla County, WA as of August, 2025 is estimated at $3.69/W. After the federal tax credit, the estimated cost for a 5 kW solar panel system in Walla Walla County, WA is roughly $12,915.","ar":"b"},"as":"ag"}