Solar panel cleaning costs an average of 60 to 350 euros per service, depending on the number of panels and accessibility. Clean solar panels produce up to 15% more energy. View the current prices here.
Average cost for a solar panel cleaner (per turn)
Solar panels are polluted by dust, bird droppings, leaves, pollen and air pollution. This pollution reduces light output, causing your panels to generate less power. Research shows that dirty panels produce up to 15% less energy. Regular cleaning maintains yields and prevents permanent damage due to ingrained dirt or limescale deposits.
The costs for cleaning solar panels are on average between 3 and 8 euros per panel. For an installation of 10 panels you pay 60 to 100 euros, for 10 to 20 panels 80 to 160 euros and for 20 or more panels 120 to 250 euros. With combined cleaning and inspection, the costs are higher, but you also get a check on the condition of the panels, cabling and mounting.
Professional cleaners use demineralized (osmosis) water and soft brushes on telescopic handles. No aggressive cleaning agents or high-pressure sprayers are used, as they can damage the coating of the panels. The osmosis water dries streak-free, just like window cleaning. Cleaning takes 30 to 60 minutes for an average installation.
Most installers recommend cleaning solar panels once or twice a year. If there are many trees in the area, near agricultural areas or on a flat roof (where water drains less well), more frequent cleaning may be necessary. The best time is in early spring, so that your panels perform optimally in the summer months when most energy is generated.
You can clean solar panels yourself with a garden hose and soft brush, but this entails risks. Working on the roof is dangerous without the proper safety measures. Moreover, you can damage the panels with the wrong tools or plain tap water (limescale). Professional cleaners are insured, work safely and use the right equipment.
| Service | From | To | Unit |
|---|---|---|---|
| Per panel | €3 | €8 | per panel |
| Up to 10 panels | €60 | €100 | per turn |
| 10 to 20 panels | €80 | €160 | per turn |
| 20+ panels | €120 | €250 | per turn |
| With inspection | €100 | €200 | per turn |
| Flat roof surcharge | €20 | €50 | per turn |
More panels means a higher total price, but the costs per panel decrease with larger installations.
Panels on a steep or high roof are more difficult to reach and cost more due to extra safety measures.
Panels near trees or in an agricultural environment become dirty more quickly and require more intensive cleaning.
Water drains less well on a flat roof, leaving more dirt behind. This may result in a surcharge.
Cleaning a solar panel costs an average of 3 to 8 euros per panel. The price per panel decreases for larger installations. An installation of 10 panels costs 60 to 100 euros in total.
Once or twice a year is sufficient for most installations. With many trees, pigeons or in an agricultural environment, more frequent cleaning may be necessary for optimal yield.
Yes, dirty panels produce up to 15% less energy. Regular cleaning maintains yields and pays for itself through higher energy production.
That is possible, but it entails risk. Working on the roof is dangerous and tap water leaves limescale marks. Professional cleaners work safely with osmosis water and the right tools.
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