Solar Panel Cleaning
Dirty panels produce noticeably less power. We clean your solar installation gently with demineralised water – no scratches, no chemicals.
Dust, pollen, bird droppings, soot and deposits from farming settle on every solar installation over the years. Rain washes off less of this than you might think – especially on panels with a shallow pitch, a strip of dirt stays along the bottom edge and permanently shades the cells. Depending on the location, this costs several per cent of the annual yield.
We clean solar installations with the same pure-water (reverse osmosis) system as high-quality glass facades: fully demineralised water, soft rotating brushes, no harsh cleaners. This is gentle on the panel coating and leaves no residue for new dirt to cling to.
Whether a detached house, a barn roof or a commercial building: we look at the installation, check the access and give you a fair quote – one-off or as regular maintenance.
Worth knowing: almost all panel manufacturers recommend gentle cleaning with demineralised water and soft brushes – and some warranty conditions even require proper maintenance. Harsh household products, hard brushes or a DIY-store pressure washer, on the other hand, can cause micro-scratches and leaks that may end up costing you the warranty. That is exactly why solar panel cleaning belongs in professional hands.
Handy: when we are working on the roof with our telescopic equipment anyway, gutters, roof windows and canopies can be cleaned in the same visit. That saves on travel and set-up time – and ticks several items off your list at once.
What’s included
Panel cleaning with pure water
Demineralised water and soft brushes – thorough, but gentle on glass and coating.
Rooftop and ground-mounted installations
From the house roof to a larger installation on an industrial building or in a field – the equipment adapts to the site.
Visual inspection
While cleaning, we notice anything unusual such as broken glass or loose cables – and report it to you straight away.
Regular maintenance
On request we clean at a fixed interval, for example once a year after the pollen season.
How it works
Discussing the installation
Size, roof pitch, access – a few photos and key details are often enough for an initial quote.
Appointment and cleaning
We clean in suitable weather, usually from the ground or via safe access points – without damaging the panels.
Result
Clean panels, documented with before-and-after photos on request. You will see the difference in the yield curve.
Frequently asked questions
How much yield does a dirty installation cost?+
Depending on location and soiling, typically between three and ten per cent; in individual cases – for example next to farmland or busy roads – even more. Cleaning usually pays for itself within a short time.
Isn’t rain enough to clean the panels?+
Rain rinses off loose dust, but not stubborn deposits such as lichen, bird droppings or the typical strip of dirt along the bottom edge of the panel. These are exactly the spots that permanently shade the cells.
Can cleaning damage the panels?+
Not with the right method. We work without high pressure directly on the glass, without harsh chemicals and with soft brushes – just as the panel manufacturers recommend.
What is the best time of year for solar panel cleaning?+
Spring after the pollen season is ideal – then the clean installation delivers its full yield over the productive summer months.
How long does it take to clean an installation?+
A typical installation on a detached house (8–12 kWp) is cleaned in one to two hours, depending on access. We price larger installations on industrial buildings or in fields after an on-site visit and give you a fixed time frame in advance.
Does the installation have to be switched off for cleaning?+
For normal exterior cleaning with pure water, usually not – we work without touching the electrics. If we notice damaged cables, connectors or broken glass, we stop at that point and report the findings to you before anything happens.
Solar Panel Cleaning in your town
From our base in Niederkrüchten, we work throughout the region, including in:
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Request Solar Panel Cleaning
Give us a quick call or send us a few photos of your property – we will get back to you promptly with an honest assessment.
Available by phone Mon–Fri 8 am–4 pm, appointments by arrangement