How to Clean Solar Panel System

Why do Solar Panel need Cleaning?

Solar panels are typically installed outdoors and exposed to various environmental elements. Over time, they can accumulate dirt, dust, pollen, bird droppings, leaves, and other particles. These deposits create a barrier between the sunlight and the solar cells, which reduces the amount of light reaching the panels and, consequently, the electricity generated.

How to Clean the Solar Panels?

The best thing before cleaning your solar panels is to contact your solar panel manufacturer as they may have specific cleaning suggestions.

Otherwise, you can follow these tips on cleaning your solar panel-

  • Turn off your system before you begin cleaning.
  • To eliminate any debris or grease, spray all screens with water.
  • In the containers, combine the cleaning fluid and water.
  • Wash the solar panels with a soft bristle brush dipped in the bucket.
  • Continue this process of cleaning the solar panels until all the muck gets removed from the panel (this may take a little time since bird droppings and gum are difficult to remove).
  • Begin squeegeeing the panels until there is no more water on them.
  • After six months, put everything away and resume the process. Your solar panels will stay clean while producing as much power as possible if you do it this way.

Safety Considerations to Follow

Check the weather conditions before cleaning. Avoid cleaning panels during wet or rainy weather to minimize the risk of slipping or electrical hazards.

Before starting any cleaning process, ensure that the solar panel system is switched off or disconnected from the electrical supply. This precaution prevents the risk of electric shock or damage to the system.

When cleaning the solar panels, use soft cleaning tools such as sponges, microfiber cloths, or soft brushes.

If water is required for cleaning, use a gentle stream or spray of water from a hose. Avoid using high-pressure water or pressure washers, as they can damage the panels or their electrical connections.


Regular solar panel cleaning is essential to maintain their performance and efficiency. The frequency of cleaning depends on various factors, including the local climate, surrounding environment, and the tilt angle of the panels. In areas with more rainfall or frequent dust storms, cleaning may be required less frequently compared to areas with dry and dusty conditions.

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