The best way to clean solar panels is to use soft brush and purified water. It is important not to use harsh materials when cleaning solar panels as they could cause damage, and solar panels are costly to repair. If you clean often, you might be able to just run a hose along the panels to remove any dirt. We have just cleaned solar panels at Barrow Mead in Bath this weekend. For more info you can check our social websites such Facebook, Twitter or Instagram. We are also present on google.bussines.