{"$A":{"an":"What do solar panels cost in Jefferson County, WA?","ao":"In Jefferson County, WA, the mean cost per watt for solar panels as recorded in August, 2025 is $3.51/W. A 5 kW solar panel system will cost you around $12,285 in Jefferson County, WA after the federal tax credit is applied.","ap":"b"},"aq":"dN"}