Get matched with top solar panel pros in Warrensburg, IL

The average homeowner needs around 22 solar panels, but the exact number depends on your monthly energy consumption. Your solar professional should size your array to offset your consumption, meaning you’ll need fewer panels if you use below-average amounts of electricity, or more than 22 if you use above-average amounts of electricity. The number of panels also depends on the output of each panel. The average is around 400 watts, but you might need more panels if you install less capable equipment. Since there are so many variables, you should have a professional size your system.

While you can minimally overshoot the number of solar panels you need for your home, it's not smart to go too far. Not only is the extra cost unnecessary, but your state may put caps on how much energy your home can produce and send back to the grid. It is always best to work with a solar energy professional to determine the best system size for you.

It’s possible that installing solar panels can lead to mold on the roof. The panels themselves are not the issue. Problems caused by improper installation—such as roof leaks and mounts that aren’t sealed properly—can cause mold. Another potential cause of mold is debris accumulation under panels, which can trap moisture. If you live somewhere with extreme snow, rain, or hail, your home could be more prone to mold.

Insurance companies aren’t against solar panels, but they may have concerns about the risks and costs of insuring solar. The type of policy, where you live, and the insurance company itself matter. Extreme weather can damage solar panels, and faulty installation or electrical malfunctions pose a fire risk—this, in turn, can increase insurance company liability and payouts. However, you’re likely to keep coverage as long as you have a pro install the solar system, keep it maintained, can pass a solar panel inspection, and update your homeowners policy to include solar.