How much do solar panels cost in Sonoma County, CA in 2025?
On average, in Sonoma County, CA in the month of February, 2025, the price per watt of solar panel installations is $3.19/W.
According to the cost, you should expect costs to be $3,190, on average, for every 1000 watts (or 1 kW) of solar energy your solar panel system will need to produce. In Sonoma County, you will pay approximately $11,165 for a 5 kW solar panel system once the 30% federal income tax credit is factored in. A more powerful system might be necessary to fulfill your energy requirements effectively.
On the left, you can select your county to find out the average roof size and the maximum capacity for solar panels on houses in your area. The following outline, below, highlights the price, payback period, and 20-year average savings for a 5 kW system installed in your county.