Do solar panels need cleaning?

Yes, if you notice a significant decrease in power output compared to previous periods, it could indicate that your solar panels need cleaning. Additionally, visual inspections can reveal the presence of dirt, dust, or other types of debris on the surface of the panels.

Does dirt on solar panels reduce power output?

Experts estimate that dirty solar panels can experience a 5% to 25% reduction in efficiency\. In extreme cases, where the buildup of dust, dirt, and debris is severe, power output loss can be even higher. These figures highlight the importance of regular cleaning to maximize the performance of solar panels.

How to clean a solar panel?

Many cleaning products are too abrasive for solar panels or may leave a residue that blocks sunlight, so you should choose these carefully. Try mixing a mild detergent in water, slowly adding more cleaner if you need more cleaning power. The last step in solar panel cleaning is to dry the glass and review your work.

Does rain clean solar panels?

While rain can help to wash away some dust and loose dirt, it is not the most effective method for thorough solar panel cleaning. As such, relying solely on rain to clean your solar panels is not recommended for optimal production, but can extend the interval period between washing.

Should you filter water before cleaning a solar panel?

These could leave behind smears as the water dries, reducing your panels’ efficiency, so you may want to filter your water before cleaning with it. If you’re working on a hot day, avoid using cold water, too, as the dramatic temperature shift could cause the glass to crack. Instead, use warm water and try to clean on a relatively cool day.

What is solar panel cleaning?

First and foremost, let us introduce the two different terms discussed in this article: Solar panel cleaning: this entails washing the panels like windows. The cleaning may be combined with preventive maintenance of the solar collectors.