Solar panel cleaning

Rain rinses the middle of a panel and leaves everything else. Grime collects along the bottom edge where the water runs off, bird mess bakes on, and moss creeps in from the roof above. A shaded strip across the bottom of a panel costs more output than its size suggests, because of the way the cells are wired.

We clean with purified water and a soft brush on a pole, from the ground. No detergent, because anything left on the glass attracts dirt straight back, and nothing walks on the array.

What's included

• Every panel washed with purified water
• Frames and the bottom edge of each panel done properly
• Bird mess and lichen taken off the glass
• Moss cleared from the roof immediately above, where it is feeding the problem
• No detergents and no abrasives on the glass
• Before and after photographs of the array

How we do it

1. 01

   Check the array

   A look at the panels, the frames and what is on the roof above them before any water goes near it.

2. 02

   Wash with pure water

   Soft brush on a pole from the ground. Pure water dries without spotting, so there is nothing left on the glass.

3. 03

   Deal with what is feeding it

   If moss above the array is washing down onto the panels, clearing that is what stops it coming straight back.

4. 04

   Photograph it

   Before and after shots of the whole array, sent over when we finish.