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Solar Panel Cleaning Wyong: How Often Should Central Coast Homes Do It?

Oct 2
4 min read

The solar system within your home works round the clock without making any sound, but for it to function effectively, sunlight should get into its cells. The Central Coast region experiences deposition of salt and bird droppings at an alarming rate. It could just be that your solar system’s production has been declining due to accumulation of dirt, and if so, hiring solar panel cleaning Wyong professionals might be the easiest solution to get back to full efficiency.


Solar panel cleaning Wyong

Why Panels Get Dirty on the Central Coast


The salty leafy coastal environment of the area is perfect for living, but very unfriendly to photovoltaic modules. Here are some of the reasons why:


✦ Salt spray: The salty sea air produces a very thin layer of salt that catches dust.

✦ Bird droppings: These stick to the glass and remain during summer shading one cell at a time.

✦ Pollen and resin: Native plants drop a sticky substance that holds the dirt.

✦ Leaves and bark: This debris falls near the bottom part of the photovoltaic module.

✦ Dust and ash: Drought season and bushfire seasons bring fine particulates.


It rains, but it doesn't always clean because light rain produces streaks and muddy panels.


How Dirt Affects Output


Dust absorbs and disperses light, and hence the amount of light that reaches the cells is reduced. While a slight amount of dust might only result in minimal loss of efficiency, heavier dust and bird droppings will affect power generation significantly. Shading due to dirt has more impact when it affects individual cells than when the entire solar panel surface is evenly covered. The exact effect will depend on your installation, angle of your roof, and the dirt level of your panels.


So, How Often Should You Clean?


No single schedule exists, but this will work for most Central Coast houses:


✦ 6 to 12 months is a reasonable starting point for most houses.

✦ 3 to 6 months might be suitable for homes that are near the coast, under trees, or near bird nesting areas.

✦ Once a year could suffice if your solar panels are highly sloped, not near any trees, and are consistently washed by rain.


The key here is monitoring your data. Look at your energy generation over comparable sunny days and see if your energy generation decreases for any unknown reason; dirty solar panels would be the likely culprit.


Signs Your Panels Need Cleaning


✦ A decrease in generation that is gradual during sunny days

✦ Dirty spots or marks on the glass panels

✦ Bird droppings or foliage accumulation

✦ Dirt around the base of the panels

✦ An increase in electricity bills compared to the previous year’s same period


DIY or Professional Cleaning?


Cleaning from the bottom using a soft brush on an extended pole may be feasible for small and easily accessible panels. However, getting up on top of the roof is another ball game altogether. Getting injured in a fall from the roof is quite possible, and the panels become very slippery when wet. Walking on the panels is dangerous since it can crack the cells and create damage that is not covered under warranty.


Safe Cleaning Methods Matter


Cleaning is not the same across the board. Manufacturer of the panels recommends soft methods, and choosing otherwise can invalidate your warranty. Some things to consider include:


✦ Brushes or microfibre material that won’t scratch the glass

✦ Use clean or purified water to minimize mineral spots

✦ No use of aggressive cleaning chemicals and tools

✦ Low-pressure water applied only on the panels


The latter cannot be overstated. Excess pressure is likely to force water into the seals and damage the panels. However, it does not mean that the high-pressure cleaning service in Central Coast is not useful in the maintenance of solar energy systems. It is recommended for the area around the panels, especially roof tiles, gutters, driveways and paths because moss, mould and dirt begin there and move onto the panels.


What to Check Before You Hire


Carefully consider your service provider. Consider asking questions about the following:


✦ Insurance: The company must have public liability insurance.

✦ Access to the roof: Inquire about their approach to accessing roofs safely.

✦ Cleaning method: They should have an answer about how they clean the panels.

✦ Experience: Check their experience with domestic solar systems.

✦ Price structure: Whether the cost is panel, system or flat rate.


Customer reviews and photographs: This increases their credibility.


Questions to Ask for a Quote


✦ Do you employ low pressure, warranty-safe techniques on the panels?

✦ Is the price set in stone, with no additional costs for access or height issues?

✦ What is the duration of the project?

✦ Are you insured for roofing and any damages that may occur accidentally?

✦ Do you also offer gutter cleaning services during the same appointment?


Final Thoughts


Well-maintained panels ensure that your system runs as it should, save your money and use the full potential of every sunny day in the area. Keep track of your production levels and clean when necessary, based on how suitable it is for your area, and opt for an insured specialist rather than doing it yourself on your roof.


If you want a stress-free solution, the Central Coast Pressure Washing experts will be happy to help. With reliable service in the area, gentle treatment for your panels and thorough cleaning for your roof, gutters and driveway, Central Coast Pressure Washing will keep all areas of your property spotless. Contact us now for a free quote and see the benefits of proper cleaning.


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