When to book professional solar panel cleaning
Recommended cleaning is twice a year. One clean at the end of autumn helps maximise power input over the low-sun winter months, and a second clean at the end of spring removes pollen and dust to help keep efficiency as high as possible.
Dust, pollen, bird droppings, and grime can reduce panel performance.
Dirty panels can lose up to 30% efficiency depending on the situation.
Residential and commercial arrays can both benefit from regular cleaning.
Cleaning should be tailored to roof access, system layout, and panel condition.