While many folks can handle basic maintenance, some require the expertise of trained professionals. Here's when it's wise to call in the professionals. If you lack experience, are uncomfortable, or aren’t overly handy, you should consult a professional solar power maintenance service. These professionals have the knowledge and specialized equipment to address any issues. The other time to contact a professional is if you notice a significant, consistent decrease in energy output as this could indicate a system issue. An expert can fully diagnose your solar panel system and recommend appropriate solutions. They can also help determine if any issues are covered under the solar panel manufacturer or workmanship warranty.