Solar Panel
Cleaning Services

Solar Panel Cleaning Services

Want to keep your solar panels shining bright?

Your photovoltaic (PV) solar energy system is a significant investment, and it’s crucial to keep it operating at peak efficiency. Over time, pollution, leaves, traffic dust, and even bird droppings can accumulate on your solar panels, obstructing their exposure to sunlight and reducing the amount of electricity they generate. This can lead to efficiency losses as high as 25% to 30% in some areas!

We offer professional solar panel cleaning services for both residential and commercial properties. Our highly qualified team adheres to stringent safety standards to give your solar panels a thorough wash, removing blockages and maximizing their exposure to sunlight. Regular cleaning of your PV system not only maximizes your return on investment, but it can also ensure that you meet warranty conditions specified by many solar equipment brands.
Pro Group logo in yellow and grey with the droplet brand mark
Technician in harness and hard hat brushing rooftop photovoltaic arrays with a water-fed pole

Why do I need to clean my solar panels?

Solar panels convert sunlight into electricity. When dirt accumulates on the surface of a solar panel, it compromises the amount of light absorbed and, as a result, the efficiency of the panel is reduced.  In addition, rainwater contains airborne dust particles that settle on the surface after the water evaporates, sometimes leaving calcium and hard water deposits.

Whereas soft shading encompasses shading that moves, such as from a tree branch or chimney, hard shading does not move.  Hard shading comprises matter such as lichen, bird droppings, or any other object resting on the panels.  If your panels are not professionally cleaned regularly, these hard shadings can cause hot spots, leading to cell overheating, back sheet damage, and reduced efficiency of the overall panel.

By regularly cleaning your solar panels, particles such as dust, debris, bird droppings, lichen, and bugs, which can otherwise decrease efficiency by 15-30%, are removed from the surface of the panels.

SOLA-TECS C rotating brush head with splash guard working across photovoltaic modules

Why choose us?

Pro Cleaning Group is committed to providing our clients with the best possible solar panel cleaning services. That’s why we have partnered with Kranzle to invest in the leading solar panel cleaning system available: the SOLA-TECS W.

This mobile, water-driven brush roller system is designed for cleaning and maintaining photovoltaic systems. It uses mineral-free (demineralized) water for professional cleaning, typically without the need for additional chemicals. The high-pressure cleaner powers the rotation of the SOLA-TECS W, supplying water to the brush roller, which effectively cleans the PV system.

Our teams are also fully equipped with the relevant training to execute the cleaning service.

SOLA-TECS C rotating brush head with splash guard working across photovoltaic modules
SOLA-TECS brush head on a telescopic pole washing a rooftop photovoltaic array from ground level
Technician with an extended brush pole washing a large rooftop photovoltaic installation
Frequently asked Questions

Why do solar panels need regular professional cleaning?

Dirt, debris, bird droppings, lichen, and bugs settle on panels and can reduce their efficiency by 15-30%. Hard shading like lichen or droppings can also cause hot spots, leading to cell overheating and back-sheet damage.

What equipment do you use to clean solar panels?

We’ve partnered with Kränzle to use the SOLA-TECS W – a mobile, water-driven brush roller system designed specifically for cleaning and maintaining solar panels.

Is solar panel cleaning available for both homes and businesses?

Yes. We offer professional solar panel cleaning for both residential and commercial properties.

Does cleaning affect my solar warranty?

Regular cleaning can actually help you meet the warranty conditions specified by many solar equipment brands, as well as maximising your return on investment.

Why does rainwater alone not keep panels clean?

Rainwater carries airborne dust particles that settle on the panel surface, and once the water evaporates, deposits like calcium and hard water marks can be left behind.

Do you use tap water?

Yes, but we connect our own filtration system to it before we begin washing your panels. The system removes impurities and purifies the water, ensuring only the purest water is used. We don’t use any chemicals, as these can damage solar panels. Combined with our SOLA-TECS brush system, pure water lets us deliver a professional service.

How long does the service take?

It depends on the number of panels at the property, how accessible they are, and the logistics of setting up on site. We can only provide guidelines once we have the scope of work, so it’s best to contact us and we’ll guide you from there.