How Often Should Solar Panels Be Cleaned in Sydney?
Most Sydney homes should have their solar panels cleaned every 6 to 12 months. Panels near the coast, under trees, near main roads, industrial areas or construction, and panels with a low tilt usually need cleaning every six months. Visible bird droppings, dirt lines along panel edges, or output dropping without a change in weather are signs it's due.
Coastal homes
Salt spray leaves a film that rain doesn't fully remove — common on the Northern Beaches, Eastern Suburbs and around Botany Bay and Cronulla.
Western & south-western Sydney
Dust, heat and pigeons make six-monthly cleaning worthwhile in many western suburbs.
Low-tilt panels
Flat or low-angle panels don't shed dirt in rain, so grime builds up along the bottom edge.
Best time of year
Late winter or spring, before the long summer days when your system produces the most.
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