If you have a lot of Dust and Grime, living within built up areas, it has a shadow effect on your panels and leaves a layer, preventing your panels from working to the best of their ability so it's always best to pay attention and focus on a clean every 6 months to a year.

The bird spots make up the majority of the blockages on your panels, that's why it's worth a clean.

How often should have your solar panels professionally cleaned?

Experts recommend that you should clean your solar panels every 6 months. It is particularly important to have your panels cleaned if you notice that average energy production levels are dropping.