solar panel

Solar Panel Cleaning


Solar technology is gaining popularity in many applications such as roof systems, power plants, pumping systems, street lighting systems, etc. One of the important aspects to keep in mind is the continuous maintenance of the system. Regular cleaning of solar panels is important. The solar panel has a tempered layer of glass on top that is exposed to the sky and collides with dust deposition on its surface over time. This dust reduces the generation of energy from the solar system. Therefore, it is highly advisable to regularly clean your solar panels to get the best results from it. The glass surface of solar panels is a delicate surface and special care should be taken to ensure

Solar panel surface cleaning

The solution to the technology used to clean solar modules will depend on the type and capacity of the system. For example, a small solar system (eg having 10 solar modules) can be cleaned simply by washing with water and wiping with a soft cloth. However, the same method cannot be used for a larger system using hundreds of panels. And for large MW solar power plants, the system and technology choices will further vary depending on the availability of water.

In this article, we will discuss the ideal method for most roof and captive solar systems with around 50 to 1000 panels installed on a site. Primarily cleaning panels requires a wash period with water and gentle cleaning with a soft brush.

Below is an image of such a brush.

solar panel

These systems have specially designed soft bristles on the brush to avoid any scratches or damage on the surface of the panels. They also usually have a water hose that supplies a continuous stream of water to the bristles.

How many times should solar panels be cleaned?

The frequency of cleaning depends on a number of factors.

The first criterion is the location and dustiness of the area. For example, areas that are very dusty should have a weekly cleaning schedule. But for less dusty areas, every two weeks or a monthly cleaning schedule is sufficient

Another criterion is the availability of water to clean the panels. In the case of areas where water supply is difficult, it is not recommended to have a very high frequency of treatment due to the limited availability of water.

Another point is the user friendliness and access to the solar panels installation area. Small tradeoffs in cleaning frequency are acceptable in the case of limited labor availability or other typical site problems.

solar panel


It is important to ensure that the surface of the solar panels is regularly cleaned in order to get the best solar power yield from the solar system. Of course, the frequency and need for cleaning varies with the type of system and the convenience of the owner.

Also, a very important point to keep in mind is making use of the right cleaning solution to ensure the surface of the solar panels does not get damaged in the process. Otherwise, it is not possible to remove scratches after the solar panels is damaged. Although regular cleaning of solar panels is necessary to achieve the best possible energy output from solar panels, the solar system will continue to operate at the main percentage of its power even without cleaning.