{"$E":{"at":"What do solar panels cost in Kendall County, IL?","au":"In Kendall County, IL, the mean cost per watt for solar panels as recorded in August, 2025 is $3.86/W. The installation of a 5 kW solar panel system in Kendall County, IL will cost about $13,510 after federal tax credits.","av":"b"},"aw":"dU"}