Bird droppings cause disproportionate solar panel efficiency loss — a single deposit can affect an entire cell string. Professional cleaning restores full output. Free with every roof clean.
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Bird droppings on solar panels are one of the most impactful efficiency reducers for Queensland solar systems. Unlike general dust and grime that reduces efficiency fairly uniformly, a single concentrated bird dropping on a solar panel can affect the output of the entire cell string because solar cells within a string are wired in series. This means a small deposit covering even a fraction of one panel can reduce output from that string by 30 to 40%. In Queensland, where bird activity from seagulls, pigeons, lorikeets, magpies and flying foxes is year-round and significant, bird droppings on solar panels are a consistent efficiency problem. Burnett 2 Bay includes free solar panel cleaning for up to 20 panels with every roof clean.
Solar panels are wired in series within strings. If one cell in a string is shaded or blocked — even partially — the output reduction affects the entire string, not just the blocked cell. This is why a single bird dropping, despite covering only a fraction of a panel, can reduce output from that string by a much larger proportion than the physical area of the deposit.
Coastal properties in Redlands, Cleveland, the Gold Coast and Moreton Bay are most affected by seagull and large bird activity. Seagulls roost on elevated surfaces including rooftops and leave concentrated deposits in favoured roosting areas. Solar panels in the line of regular seagull activity can accumulate significant droppings within weeks.
Bird droppings are highly acidic and can etch the anti-reflective coating on solar panel glass if left long-term. The correct removal method uses purified deionised water with soft brush heads — never abrasive materials or tap water.
Our Roof Clean package includes free solar panel cleaning for up to 20 panels as standard. Access is already set up for the roof clean and adding the panel clean at no extra cost delivers maximum value.
A single concentrated bird dropping can reduce the output of an entire cell string by 30 to 40%, due to how solar panels are wired in series.
In coastal positions with significant bird activity, every 6 to 12 months is appropriate.
Yes — free for up to 20 panels with our Roof Clean package from $799.
Purified deionised water with soft brush heads — never abrasive materials or tap water.
Based in Redlands, serving all of South East Queensland. Reply within 2 hours Mon–Sat.
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