A rotating brush solar panel cleaning machine on a telescopic pole with 5.5 m of reach, dual power (mains or battery).

Runs off either mains or the battery pack. The version to buy if the arrays you clean are a mix of roof-mount with power nearby and ground-mount without.

Soiled panels lose output, and the loss is worst where nothing washes the surface between cleans. Panels are cleaned with purified water and a soft rotating brush. Never use a pressure washer on an array — it drives water past the seals.