Most solar panel owners in Wollongong and the Illawarra don't realise their panels are dirty — because from the ground, they often look fine. But a closer look reveals a build-up of dust, pollen, salt residue, bird droppings and fine debris that can't be removed by rain alone, particularly on panels installed at a low tilt or in areas with significant air pollution or coastal salt spray.
Your inverter data tells the real story. If your system's output has declined over the past year or two and there's been no change in shading, the panels may be the issue. Professional cleaning can restore 15–25% of lost output — often representing hundreds of dollars of recovered energy generation per year.
We use a professional soft-brush and deionised water cleaning method that is safe for all panel brands and coatings. Deionised (pure) water leaves no mineral deposits or streaking — the most common problem with ordinary hose cleaning.
For most Wollongong properties, once every 12–18 months is sufficient. However, properties near the coast, near industrial areas, or under significant bird activity may benefit from more frequent cleaning — every 6–12 months. We'll advise during your free quote based on your panel's condition and location.
The most common reason solar panels in Wollongong need frequent cleaning is bird activity — particularly pigeons. If you're cleaning panels every year due to bird droppings, the most cost-effective long-term solution is to have solar panel bird mesh installed at the same time as your next clean. This eliminates the root cause and dramatically reduces future cleaning needs.
We provide solar panel cleaning throughout Wollongong, Fairy Meadow, Corrimal, Thirroul, Bulli, Figtree, Shellharbour, Kiama and surrounding suburbs. View all service areas.