Already 55+ installations cleaned in the Leuven region

Cleaning solar panels in Leuven

Name: Solarco
Rating: 5

In greater Leuven, solar panels mainly have to deal with traffic emissions from the Ring R23 and the E40, along with pollen and tree seed from Heverlee forest and Meerdaal forest. That mix slowly builds up a thin film that noticeably reduces efficiency. We clean your installation safely with osmosis water and give your roof back its shine in one turn.

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5/5 Google Reviews

Active in BE, NL, DE & FR

Since 2018

500+ corporate clients

Leuven: specific conditions for solar panels

Leuven combines a compact historical city centre with the busy Ring R23, the Vaartkom and green belts around Heverleebos and Meerdaalwoud. That context ensures that solar panels in greater Leuven mainly have to contend with fine dust, pollen and tree seed, rather than heavy industrial precipitation.

Local factors affecting returns

Ring R23 and E40: the intersection of the E40 and the Leuven Ring Road continuously generates exhaust fine dust, especially on roofs in Kessel-Lo and Wilsele.
Pollen Heverlee forest and Meerdaal forest: the adjacent forests yield exceptionally abundant birch, oak and grass pollen in spring.
Tree seed and fluff: the poplars along the Vaart and lime trees in the city centre produce a lot of lint in May and June that sticks to a damp panel.
Gulls along the Vaartkom: near the Vaartkom and the canal, gulls nest leaving local patches.

What that means for your installation

In greater Leuven, one annual cleaning is usually sufficient, with an extra turn after an intense pollen season or for roofs close to the Ring Road. We schedule maintenance to coincide with the sharpest yield drop in your monitoring.

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Getting solar panels professionally cleaned

Getting solar panels cleaned doesn't have to be complicated. You request a quote, we schedule a date, and our team does the rest - you don't even have to be there. Afterwards, you will receive a report with before and after photos. No hassles, no surprises, no additional costs.

Our 4-step approach

Thorough pre-inspection

Visual + thermographic check of your installation. We identify hotspots and damage before cleaning.

Robotic cleaning with osmosis water

Our certified cleaning robots operate on battery, without chemicals. Osmosis water dissolves all dirt and leaves no streaks or residue.

Quality control

After cleaning, we recheck each panel. You will receive a detailed report with before and after photos.

Aftercare and Advice

Based on your installation, environment and production data we draw up an optimal cleaning calendar.

Why companies choose Solarco

Professional and environmentally friendly

Solarco uses professional techniques to clean your solar panels, including robotic cleaning systems and osmosis water. This is not only better for your panels, but also better for the environment as no harsh cleaning agents are involved in our solar panel cleaning.

Safety first

We always work according to strict safety guidelines. Our operators are fully certified and trained to work on aerial platforms and roofs. Moreover, we have comprehensive insurance that covers any kind of risk or liability. This allows us to safely clean solar panels.

Innovative cleaning robots

For large solar parks or extensive roof installations, Solarco deploys robot cleaners. These robots run on batteries and are certified by renowned module manufacturers. The robot can quickly and evenly clean large installations of solar panels without damaging the panels.

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Benefits of professional solar panel cleaning in Leuven

Higher efficiency: Several studies show that cleaning solar panels can provide an efficiency improvement of a few percent to as much as 15%, depending on the degree of contamination.
Longer lifespan: By preventing dirt build-up and hot spots, your entire system will last longer.
Safety and warranty: Many manufacturers recommend professional cleaning to maintain the warranty. Climbing a roof yourself is also not without risk.
Time savings: With the right tools and experience, we can take care of a large installation in a short time, while you yourself spend your precious time on other things.
Sustainable approach: Osmosis water and robotic cleaning minimise the use of harmful chemicals, which is better for the environment as well as for the panels themselves.

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Frequently asked questions about solar panel cleaning Leuven

In the Leuven region, one thorough cleaning a year is sufficient for most roofs. For those who live near the Ring R23, along the E40 or in a heavily wooded area such as Heverlee, a second cleaning after the pollen season can be profitable.

Rain removes the coarser dust, but tree seeds, pollen and urban soot combine to form a stubborn film that actually dries after a shower and thus sticks to the glass.

Yes. We clean private roofs in greater Leuven and large corporate installations on the campuses of imec, KU Leuven and the Researchpark Haasrode, as well as at logistics parks along the E40 in Boutersem and Tienen.

Customers in the Leuven region typically see 8 to 18% yield recovery immediately after cleaning, depending on pollen season and orientation. We back up these gains with pre- and post-turn monitoring data.

We work throughout greater Leuven, including in Heverlee, Kessel-Lo, Wilsele and Wijgmaal, and in surrounding municipalities such as Bertem, Oud-Heverlee, Tervuren, Herent, Rotselaar, Holsbeek, Bierbeek and Tienen.