Muddy Solar Panels

One problem that solar panels face in such long dry spells of weather as we're having now is the accumulation of dust, pollen and other bird grunge on their surface.

It doesn't help that we've had some very light rain over the last day that has, in itself, contained a lot of mud.

This can degrade the output of the array until a really good downpour washes the panels, or you get a telescopic window cleaner out...

Before:

After: