Dirt, dust, bird droppings, and other pollutants can have an impact on a solar panels ability to generate energy, reducing their efficiency, leading to lower energy output and, potentially, financial losses. Thats why solar panel cleaning is recommended to ensure maximum your return on investment.
Why solar PV cleaning is essential #
It doesn’t take much for dirt to make an impact. Even a thin layer of dust can reduce efficiency by as much as 10-25%. When grime builds up, it blocks sunlight from reaching the panels, which in turn reduces the amount of energy they can convert into electricity. The result? Less power and a lower return on your investment.
Factors that influence solar panel cleaning frequency #
Areas with higher pollution, dust, or pollen levels will require more frequent cleaning to keep panels working at their best.
Rain can help wash away some dirt, but in dry climates, dirt accumulates faster and cleaning becomes more necessary.
Flat panels collect more dust than angled ones, which can lead to quicker buildup and more frequent cleaning.
Trees, birds, and industrial zones may contribute to faster dirt accumulation.
When to clean solar panels #
Visible dirt buildup: If you can see a layer of dust or debris on the panels, it’s time to clean them.
Reduced energy production: If you notice a sudden drop in energy output, dirty panels could be the culprit.
After seasonal changes: Cleaning in spring and autumn helps tackle pollen buildup and fallen leaves, which are common at those times of year.
What does a solar panel cleaning service include? #
A professional cleaning service typically includes:
- Inspection – Checking for cracks, loose connections, and other issues.
- Pre-cleaning assessment – Identifying the type of dirt accumulation and choosing the appropriate cleaning method.
- Non-abrasive cleaning – Using purified water and soft brushes to avoid scratching the panels.
- De-ionized water rinse – Ensuring no residue or streaks remain after cleaning.
- Performance check – Verifying that the panels are working at maximum capacity post-cleaning.
How do you clean solar panels? #
Water-fed pole system – A common method for cleaning large solar installations, this system uses purified water and extendable poles with soft brushes to gently clean panels without damaging them.
Manual cleaning with microfiber cloths – For residential and small-scale installations, professionals may use soft microfiber cloths and eco-friendly cleaning solutions to remove stubborn dirt without scratching the surface.
Robotic and automated cleaning systems – For large commercial solar farms, automated robotic cleaners may be used to clean panels efficiently without manual intervention.
Professional solar PV cleaning services #
Professional services bring valuable benefits such as safety, efficiency, and specialised equipment. Our services team know how to handle delicate panels and avoid damage.
