The search for clean energy has driven the use of solar panels in many parts of the world. In recent years, the roofs of residential communities, offices, and buildings in general have become generators of energy.

In order to make the most of this energy and ensure its efficiency, it’s essential to pay attention to the cleaning and maintenance of solar panels. Although there are different types of solar panels, they all require the removal of dirt, dust, and accumulated debris to improve their ability to absorb sunlight, which maximizes energy production. Here’s how to clean solar panels to extend their useful life.

The importance of proper maintenance of solar panels

Constant developments in solar panel technology have made photovoltaic systems ever more resistant, efficient, and durable. However, that doesn’t mean that we shouldn’t take care of the equipment. The proper maintenance of solar panels can increase energy production by around 15%.

Regular inspections and proper cleaning ensure optimal operation and therefore higher energy production, which results in long-term economic benefits.

Factors that could affect the useful life of solar panels:

Temperature

The efficiency of solar panels that are exposed to high temperatures may decrease over the years. Increased temperature causes thermal stress on materials, so photovoltaic cells may experience a faster degradation process.

Shade

If the solar panels are partially shaded by trees, buildings, or other objects, the performance of the entire system could be affected. This is because the panels in series are connected to each other, so the performance of one panel affects the others. 

Dirt

Dirt, such as dust, leaves, or other debris acts as a barrier that obstructs sunlight and decreases efficiency. If not cleaned regularly, it could stick to the surface, which could cause permanent damage.

Six steps for proper maintenance of your solar panels

The maintenance of solar panels and regular cleaning to remove the accumulated dirt or debris are the best option to extend their useful life. To make sure you have no doubts about what tools to use and in what order you should do it, let’s see how to clean solar panels step by step.

1. Schedule regular cleaning 

To keep solar panels in good condition, you must clean them at least twice a year: one at the end of fall and another at the start of winter. If they’re installed in an area with a high dust, pollen, or dirt concentration, it’s recommended to clean them more often, for example every three months.

2. Choose the right time

The maintenance and cleaning of solar panels must be carried out during the early hours of the morning, when the panels are fresher. Cleaning them when they are still warm or exposed to direct sunlight may be counterproductive, as the combination of heat and cold water can generate thermal stresses and damage the equipment. Avoid when windy, rainy, or snowy.

3. Gently clean

If you haven’t detected any problems, you can start with the cleaning. Make sure you remove any kind of dirt, dust, or debris that may affect the performance of the solar panels.

4. Carry out a visual inspection

Before starting, carry out a visual inspection of the solar panels to identify possible damages such as cracks, breaks, or loose connections. If you detect any problems, contact a professional to carry out the necessary checks and repairs.

5. Dry the panels

You can let the solar panels air-dry, or you can use soft cloths. The most important thing is that no water residue remains that may affect the efficiency of the panels.

Monitoring

For proper maintenance, record the date you clean the solar panels, and schedule the next one. This will allow you to properly monitor and maintain the installation in optimal conditions.