Dust, pollen, droppings and leaves cost up to 20 % yield. We clean your PV modules gently with demineralised water – no scratches, no chemicals.
Dirty solar modules cost real money: studies show 5 to over 20 % yield loss depending on location and surroundings. WDS AG cleans photovoltaic and solar thermal systems properly with demineralised water, telescopic brushes and if needed a lift. Without scratches, without aggressive chemicals – for maximum lifetime and more yield.
Owners of PV systems on single-family and apartment houses and commercial roofs. Operators of large photovoltaic systems on industrial buildings, farms and public buildings in Zurich.
Usually every 1–2 years. Near farming, rail or industry, annual cleaning can make sense.
Yes – 5–20 % yield gains are documented. The effect is largest with heavily soiled or low-angle modules.
Yes. We work exclusively with demineralised water and soft brushes according to manufacturer recommendations.
Yes. We use lifts, telescopic systems or industrial climbers depending on access.
Yes, our business liability insurance covers damage to the system and the building.
Removing algae, moss, dirt and graffiti – with the right method for every surface. Lift, scaffolding and disposal included.
Learn more Property MaintenanceTrained caretakers, a fixed point of contact, documented inspection rounds. For apartment buildings, condominium associations and commercial properties in Zurich.
Learn more Facility ManagementHVAC checks, maintenance contracts, on-call, cleaning, operations. One provider for all building-related services.
Learn moreDescribe your property in a few lines – we usually get back to you within one business day.
