Photovoltaic cleaning

A clean photovoltaic system ensures optimal electricity yields. Dirt, dust, leaves, and other debris can contaminate the surface of solar modules and significantly reduce energy output. With professional photovoltaic cleaning, we gently and thoroughly remove all deposits without damaging the modules. Regular cleaning not only extends the service life of your system, but also ensures that you achieve the maximum possible yield from your solar system in the long term. This allows you to invest sustainably in the efficiency and cost-effectiveness of your renewable energy source.

More power through cleanliness

Solar modules are permanently exposed to the weather and environmental pollution. Especially in the vicinity of agriculture, industry, or trees, dust, moss, bird droppings, pollen, etc. regularly accumulate. However, even slight contamination can reduce the yield by 10–20%.

Why cleaning should be done by professionals

• Solar modules are sensitive high-tech components and not ordinary glass surfaces. Improper cleaning (e.g., with dishwater, high-pressure cleaners, or the wrong brushes) can lead to microcracks, glass breakage, or loss of the manufacturer's warranty.
• In addition, cleaning on the roof is a safety issue. Personal protective equipment, scaffolding, or safety systems are required to prevent accidents.
• The combination of electrical systems and water poses additional risks such as electric shocks and short circuits. 
• Professional visual inspection before cleaning begins

How often do solar modules need to be cleaned?

Cleaning intervals depend heavily on the environment surrounding your system:

• Annual cleaning: Recommended in areas with high levels of dust or dirt, e.g., due to nearby agriculture, industry, or busy roads.
• Every 2 years: Sufficient in normal environments without high levels of pollution.
• Consider roof pitch: Flat modules become dirty more quickly than steeply installed ones, as rain has less of a self-cleaning effect.

Procedure & requirements

• Contact us with your system data
• On-site inspection (including satellite image analysis) for planning purposes
• Access to the system & drinking water connection required

• Cleaning only in suitable weather conditions (e.g., overcast sky)

Is cleaning really worthwhile?

Yes, even with small yield losses. Professional cleaning can secure your yields and extend the service life of your system, despite the fact that even minor contamination can be expensive.