Flat or gently sloped roof
A shallow slope traps more dust, pollen and debris than a steep roof, where rain naturally does part of the work.
Clean solar panels, without ever climbing onto the roof.
A 14 m telescopic brush and deionised water: we clean your system from the ground, without scaffolding or a lift platform in the vast majority of cases. A simple step to get back the yield of a clean roof.
- Free on-site study
- Detailed quote within 7 days
- Cantonal subsidies handled
- Direct installer
Why clean them
Soiling eats into your production.
Dust, pollen, bird droppings or urban pollution build up in a fine layer on the modules — invisible from the ground, but very real on the active cell surface. On a shallow roof or near a main road, this gradual soiling can cost several percent of yield without any warning sign.
Our 14 m telescopic brush lets us work from the ground on nearly all residential roofs, with no climbing and no height-safety equipment. A faster, safer clean, with virtually no risk of breakage or scratching.
up to 15%
Yield loss observed on a soiled roof
14 m
Reach of our telescopic brush from the ground
0
Climbing onto the roof, in the vast majority of cases
~30 min
Average duration for a residential system
Our approach
From the ground, from the first call to the photo report.
Initial contact
A quick phone call to assess your system: number of panels, roof height, access. We confirm whether your roof qualifies for the standard package.
Cleaning with the telescopic brush
A 14 m telescopic brush and deionised water, from the ground or an accessible spot on the property. No scaffolding or lift platform is needed for almost all residential roofs.
Visual inspection of the system
Checking the mounting hardware, visible wiring, and any sign of corrosion. Any issue found is reported, with a service follow-up proposed if needed.
Before/after report
Before/after photos are sent once the job is done. With the annual plan, the second visit is scheduled directly with you.
2026 pricing
Published pricing.
No climbing onto the roof in the vast majority of cases. The quote is confirmed after a short chat about your system. No hidden fees.
| Service | Price |
|---|---|
| Standard package (up to ~30 panels, height ≤ 14 m) | CHF 249 |
| Annual package — 2 visits | CHF 399 |
| Large roof (over 100 m²) | CHF 4 / m² |
| Complex access surcharge (height > 14 m, obstacle) | +CHF 90 |
Who it's for
Four situations that call for a cleaning.
Near a main road, farmland or an urban area
Traffic dust, agricultural pollen or urban pollution build up in a fine layer, invisible from the ground but measurable in your yield.
Secondary residence or hard-to-reach roof
You don't walk past your system every day, or you'd rather not climb up yourself. Our telescopic brush does the job from the ground.
System over 3-4 years old with no maintenance
Soiling builds up gradually and is often underestimated. A check-up and cleaning confirms whether production still matches expectations.
Our commitment
The same team that installed your panels.
Zero climbing onto the roof
14 m telescopic brush: no fall risk, no scratches on the modules, in the vast majority of cases.
Deionised water
No limescale marks, no detergent, no risk to the seals or the anti-reflective coating of the panels.
Technicians trained on solar installation
The same I.ON team that installs your panels knows how to handle them safely.
Public, fixed pricing
Quote confirmed before the visit. No surprises, no hidden call-out fees across Western Switzerland.
FAQ
Everything about solar panel cleaning.
Is cleaning solar panels really worth it?
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Yes, in most cases. A layer of dust, pollen or bird droppings reduces the active cell surface and can cost several percent of yield, more so in locally soiled spots (droppings, plant debris). The effect is stronger on shallow roofs and systems near a main road or farmland.
How often should solar panels be cleaned?
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Once a year is enough in most situations in Western Switzerland, since rain provides partial natural upkeep. Two visits a year are recommended for flat roofs, dusty or agricultural environments, or after a heavy pollen spring.
Does cleaning void the manufacturer's warranty?
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No — quite the opposite: cleaning done properly (deionised water, soft brush, no detergent or high pressure) is part of the standard care recommendations from most manufacturers. It's aggressive cleaning or an untrained operator that can cause issues.
Do you need scaffolding or a lift platform?
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In the vast majority of cases, no. Our 14 m telescopic brush allows us to work from the ground on nearly all residential roofs (2 to 3 storeys). A surcharge only applies for heights above 14 m or very restricted access.
What's the best season to clean solar panels?
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Late winter or early spring, before the summer production peak and after the period when pollen and debris build up the most. A second visit in late summer is useful if your surroundings are dusty.
Can cleaning damage the panels?
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No, if done correctly. We only use a soft-bristle brush and deionised water, which dries without leaving limescale marks. No detergent, no high-pressure jet, no abrasive contact with the panel glass.
Do you offer an annual maintenance contract?
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Yes, the CHF 399 annual package includes two scheduled visits per year, with a photo report for each visit. It's the most cost-effective option once you plan to maintain your system over time.
More questions about your solar system? Visit our solar panels page or our full FAQ.
