{"$K":{"au":"What do solar panels cost in Winnebago County, IL?","av":"The typical cost per watt for solar panels in Winnebago County, IL as of August, 2025 is $3.87/W. After the federal tax credit, the estimated cost for a 5 kW solar panel system in Winnebago County, IL is roughly $13,545.","aw":"b"},"ax":"dU"}