How to clean your solar panels
In this article, we’ll explain how to clean your solar panels and how often you should do it. It’s one of the after-thoughts that a lot of people don’t consider as a future task to add to the calendar.
In this article, we’ll explain how to clean your solar panels and how often you should do it. It’s one of the after-thoughts that a lot of people don’t consider as a future task to add to the calendar.
Once you have your panels on the roof, it’s important to maintain them and ensure you’re getting the most out of your system. So, how do you clean and maintain your solar panels?
The solar panels’ performance is entirely related to a set of environmental factors: solar radiation, humidity, temperature, shade, wind speed and more. Another element that deeply influences the performance of an array is soiling. Soiling loss factor is associated with losses due to dust, dirt, sandstorms, bird droppings and smog.
Depending on the region where the solar PV system is installed the soiling loss factor will vary, mainly depending on the amount of dust in that location.
In Australia, we have many regions with deserts, sand, dust & severe storms – leaving behind to a variety of environmental debris. These fine particles adhere to the solar module frame and glass, making it less efficient and therefore, producing less energy. Although this study was made to find out the impact of soiling on the modules’ power output, the usual reduction expected for soiling can vary from 1% to 10 % annually. This is why cleaning your solar panels is crucial. We’ve even seen numbers like 30% loss in production due to heavily soiled panels.
Here we will share some basic tips on how to keep your panels in optimum shape for the best energy production.
There are two main phases during the maintenance of solar modules: inspection and cleaning.
During the inspection phase, it is necessary to follow these steps:
Once you ensure that all these aspects are checked, then you can move onto the cleaning phase. If any of these elements are present in the installation, you must call your solar installer for assistance before cleaning.
The cleaning phase must take into account the following considerations:
Cleaning solar panels is a common trade these days and there are many suitable tradespeople available for this type of work in each state. If you’re not sure about who you should enlist to clean your panels, we will happily provide some recommendations. Feel free to give us a call on 1300 133 556.
The right maintenance schedule for PV modules should be inspected every 6-12 months, with cleaning to be done yearly or bi-annually – depending on the visible amount of soiling. It’s best to get professional advice if you’re unsure.
When you choose to clean your solar panels, it is advisable to do it during early morning (6:00 am) or late afternoon (5:00 pm). This will reduce the possibility of electrical shock hazard, will reduce the energy output that you lose during the maintenance procedures and will also make the manipulation of the modules even easier since the temperature on them will be much lower (panels can reach temperatures of up to 70 ºC or more, so they can get pretty hot!).
Qualified tradespeople are aware of the safety, correct equipment, cleaning solutions, & optimum times to clean panels and should be contacted for advice if your attempting to do it yourself.
The maintenance of solar panels involves two main phases: inspection and cleaning. Within the inspection phase, it is crucial to check for damage, burns or mechanical instability in the PV system. During the cleaning phase, it is essential to turn off the DC switch on the combiner box and use deionized water to clean your modules. It is also advisable that at least two people be present during the maintenance.
Your solar installer will design the system with a ground wire connected to the aluminium frames of the PV modules to eliminate the possibility of shock hazards when touching the frames, so you can be confident to touch the modules. However, never forget that PV panels will still be generating electricity, so be careful not to touch any exposed surface.
For more information, visit How Solar Works!