Solar Panel Cleaning

Why Clean Solar Panels – Can It Improve Efficiency?

Findings confirmed by the World Academy of Science, Engineering & Technology, say “a drop in the efficiency of a solar PV panel is not desired.  One of the contributing factors in the drop of efficiency in solar PV panels is the accumulated dust on the solar panel.  In practice, dust must be removed from the surface of solar PV panels in order to ensure highest performance.”  Solar Energy Power Association notes that dirty solar panels can lose 20% of their energy output.  The National Renewable Energy Laboratory puts that figure even higher, at 25%.  Recent university research has shown that a dirty solar panel can lose 50% of it’s efficiency compared to a clean solar panel.

Why Have Solar Panel Cleaning From Cinderella Support Services Ltd?

We are one of the most experienced cleaning companies in the UK. We have equipped ourselves with professional solar panel cleaning equipment, know how to clean solar panels safely and effectively and have positioned ourselves to offer a high quality professional solar panel cleaning service. Because health & safety is of paramount importance when dealing with solar panels, we hold an IPAF cherry-picker license and use our owned access machinery up to a height of 90 meters.  From these access platforms we can work safely and clean your solar panels without having to set foot on the roof at all.  For all low level Domestic and Commercial buildings, we use a reach and wash system, along with a camera to ensure the highest quality.

So why clean solar panels?  Solar panels are prone to accumulating dirt. Why is solar panel cleaning important?  Solar panel cleaning keeps your warranty intact, helps your solar panels produce the maximum electricity and importantly, saves you more money in the long-term.

Why Rainwater Will Not Clean Your Solar Panels

A good way to illustrate why rainwater will not clean solar panels is by looking at your car windscreen. If you didn’t clean your windscreen for 6 months, how much visibility would you lose? If left, the grime on your windscreen would accumulate and eventually ‘green’ over. Even if the car is rained on, the rain contains airborne dust particles that settle and attach to the surface after the rainwater evaporates. When we use our windscreen wipers, we clean the centre of the screen, but where the wipers do not reach, there is a film of dirt. The whole of your solar panel is in exactly the same condition as the edge of your car windscreen because they are both exposed to the same elements. Visibility through your windscreen is lost due to the loss of light. Therefore, the same principles hold true for solar panel cleaning. It is very important to maximise the light getting into the solar panel and in turn, increase your financial reward.

How Not To Clean Solar Panels

It is not recommended by solar panel manufacturers to use chemicals to clean your panels. Tap water and rain water will not clean solar panels sufficiently to keep them running at maximum efficiency. Using detergents to clean solar panels leaves a sticky microscopic film on the solar panel which actually attracts dirt and grime. Again, this will lead to your solar panels not running efficiently.

How Often Should You Have Your Solar Panels Cleaned?

It is recommended by solar panel installers that you should have your solar panels cleaned by every 6 months in rural and coastal areas and every 6-8 months in urban areas. These figures come from countries like Germany who have a similar climate to the UK, but have had solar arrays for a lot longer. Solar panel cleaning in the UK is following the same trends as Germany.

How Much Does Solar Panel Cleaning Cost?

Solar panel cleaning costs vary according to the installation size and access. Cinderella Support Services, offers a free survey service which enables us to supply you with a fixed cost.  The cost of solar panel cleaning is also based on the frequency of cleaning.  For these reasons, each quote that we provide for solar panel cleaning is tailored specifically for you.

Ground Maintenance

Ground Maintenance On UK Solar Parks & Farms From CSS

Cinderella Support Services offer a complete ground maintenance service for solar systems and solar farms across the UK.  We carry out professional tree surgery, hedge trimming and grass cutting. This will ensure full Solar panel coverage along with safe access for any maintenance activity.

Trees which may not have been a shading problem at the time of install, but over time have grown and now shade part of a solar panel or even multiple solar panels.  We offer a professional hedge cutting service which will keep the perimeter of the solar farm looking neat and tidy.

By using Cinderella Support Services as your maintenance provider, you ensure – one point of contact for all your needs, a model created to suit your asset requirements designed with expert knowledge, whilst at the same time maintaining the highest standards of safety.

For more detail on your bespoke package, please contact our Renewables team and they will be happy to assist.


Free consultation

Contact one of our experts to arrange your free consultation


Unit 2b, Clay Street, Sheffield, S9 2PF

T. 0114 2611333