16/06/2026
Heavily soiled solar panels --
Reduces power output – Dust, bird droppings, pollen, leaves, and other debris block sunlight, sometimes reducing production by 5–30% or more in severe cases.
Causes hot spots – If part of a panel is heavily shaded by concentrated dirt (especially bird droppings), some cells can become much hotter than others. Over time, repeated hot spots may stress or damage cells, solder joints, or the panel's encapsulation.
Moisture retention – Accumulated organic debris (leaves, moss, mud) can trap moisture against the panel frame and mounting hardware, potentially accelerating corrosion in some environments.
Scratching during cleaning – Ironically, the biggest risk often comes when heavily soiled panels are cleaned improperly. Rubbing abrasive dirt across the glass can cause micro-scratches.
Volt Wash UK uses the correct cleaning products and equipment to effectively clean your panels! Not just your standard window cleaning brush
