How much do solar panels cost in Winnebago County, IL in 2025?
In Winnebago County, IL in February, 2025, the average price per watt for solar systems is at $3.87/W
Applying the cost per watt, you are able to conclude that for every 1 kW (1000 watts) your solar panel system can generate, you will have to spend, on average, $3,870 to have it installed. In Winnebago County, the price of a 5 kW solar panel system is generally $13,545, after the 30% federal tax credit. Your electricity use habits may need a bigger system.
Select your county from the menu on the left to find the typical roof size and maximum solar panel capacity for homes in your area. The following summary, below, highlights the costs, payback period, and 20-year average savings for a 5 kW system installed in your county.