Do I need to regularly clean my solar panels?

Hi @Dougie borland , generally there is no need for cleaning. They have a rain shower from time to time and are designed to work that way. Some companies do offer cleaning services but I’ve found that window cleaners can sometimes have good enough equipment with long brushes to give a quick wash and brush up. 
A second option which I use say once a year is to simply aim a hosepipe to give them a quick spray.