You can clean ground-mounted solar arrays yourself using a soft sponge or mop with cool water. We recommend only using minimal and targeted dish soap to remove tree sap from the panels if necessary. However, be sure to rinse the panels thoroughly if you utilize detergent. Do not wash the undersides of your panels. For your safety, StraightUp Solar doesn’t recommend accessing your roof for any reason, including panel cleaning. We can provide an estimate upon request if you want your panels professionally cleaned. We will customize the price to your system, depending on the number of panels installed, your roof’s slope and height, and whether your system requires specialized lifts and equipment.   Please note that we can only perform panel cleaning in winter at temperatures above 42 degrees Fahrenheit. Submit a Service Request if interested, and we will happily provide a quote for you.