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Learn about common solar blockers in your area to determine how often you should wash solar panels and the best cleaning method:

• Soot: If you have a fireplace, soot can disperse and accumulate on the solar panels.

• Debris, dirt, and leaves: These natural elements require light cleaning. Being close to trees or living in a desert area can cause more of these to accumulate.

• Pollen: Areas with a high pollen count require more frequent solar panel cleaning, and sticky plant material requires a deeper cleaning.

• Bird droppings: Bird droppings are binding and more difficult to remove. Keep this in mind if you live near a lot of surrounding trees. 

In most cases, yes, solar panels are well worth the investment. Going solar with your home’s energy is expensive, but, in most states, the panels will pay for themselves by reducing your electric bills. Solar panels don’t produce greenhouse gasses or other pollutants, meaning you can feel good about using this renewable energy source to power your home. Plus, installing solar panels can boost your home value, helping your profit off your next home sale.

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.

The best way to save money on solar panels is to take advantage of federal and state solar incentives. For example, the solar investment tax credit (ITC) offered by the federal government can save 30% of your total—if you can take the entire credit, which is based on income taxes owed—or an average of around $9,000. You can check the Database of State Incentives for Renewables and Efficiency (DSIRE) for state and local incentives that could save you even more.