Commercial Solar Panel Cleaning

Protect your solar investment with fully accredited cleaning designed to minimise disruption to your business.

Commercial Solar Panel Cleaning for Businesses
& Large Premises

Mossinator is a family-run cleaning company based in Oxfordshire, providing commercial solar panel cleaning for businesses across Oxfordshire, Gloucestershire, Berkshire, Buckinghamshire and Wiltshire. We clean rooftop solar PV arrays on warehouses, industrial units, offices and agricultural buildings, from accessible roofs to taller and more difficult-to-reach installations.

We match the access method to the building and the array. Panels that cannot be reached safely are cleaned using our own powered access equipment, including Mobile Elevating Work Platforms (MEWPs), operated by IPAF-qualified staff.

Mossinator is certified by City & Guilds for professional training, IPAF for powered access and PASMA for mobile towers. We also provide bird proofing, roof, gutter and window cleaning, so commercial customers can cover several exterior requirements with one supplier and one site visit.

Mossinator technician wearing a helmet and harness while cleaning rooftop solar panels from a cherry-picker basket.

Safety

Our team is fully trained and certified in PASMA and IPAF to work safely with access equipment.

Access

We use our own suitable access equipment, including scaffolding and cherry pickers, to reach rooftop solar arrays where ground-level access is not suitable.

Two Mossinator technicians reviewing a solar-panel cleaning checklist beside their service van.

Insurance

Our trained team is fully insured to carry out commercial solar panel cleaning work.

Specialists

We specialise in commercial and high-level solar panel cleaning, handling large, hard-to-reach rooftop arrays for businesses across the region.

How Dirty Panels Affect Commercial Solar Output

Solar panels need clear access to sunlight to generate electricity efficiently. Dust, dirt, pollen, bird droppings, agricultural dust, and industrial pollution can build up on the surface, reducing the amount of light reaching the panels.

Heavy soiling can reduce solar panel effectiveness by 10% to 25%, depending on the site and level of contamination. For a commercial installation, even a relatively small reduction in generation can affect the financial return from the system, making regular cleaning an important part of ongoing maintenance.

Protect Solar Panel Performance

Removing accumulated dirt and debris helps panels receive as much sunlight as possible, supporting consistent energy generation.

Reduce Long-Term Damage

Heavy soiling can contribute to hot spots and, over time, potential damage to solar cells. Regular cleaning helps keep the panels in better condition.

Support Maintenance Records

Documented cleaning and maintenance can help commercial property owners meet relevant insurance or warranty requirements where regular maintenance is expected.

Solar Panel Cleaning for Warehouses, Farms, Schools and Managed Sites

We work with a range of commercial properties, adapting our cleaning approach to each site’s installation, access requirements, and day-to-day operation.

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Mossinator van and cherry picker at a commercial rooftop solar-panel cleaning visit.

Warehouses and Distribution Centres

Large rooftop arrays are rarely checked because they can't be seen from the ground, so soiling often goes unnoticed until generation drops. Our own specialist access equipment helps us reach high warehouse roofs while minimising disruption to day-to-day site operations.

Industrial and Manufacturing Units

Dust, emissions and grime from industrial processes can build up on panels faster than on other sites. We plan work around production schedules and site safety rules, with RAMS provided in advance.

Mossinator specialist cleaning rooftop solar panels with a soft water-fed brush.

Agricultural Buildings and Farms

Farm buildings often see heavy soiling from feed and harvest dust, bird droppings and lichen. Sites exposed to higher levels of agricultural dust, debris or bird activity may benefit from more frequent cleaning, with bird proofing available where nesting beneath panels is also a problem.

Schools and Colleges

We provide commercial solar panel cleaning for schools, colleges and other education premises, with work planned around the site's timetable and access requirements. Where required, cleaning can be scheduled during INSET days, holidays or quieter periods to minimise disruption.

Facilities, Estate and Housing Portfolios

Maintaining solar across several properties means coordinating multiple contractors and visits. We can cover multiple sites under one arrangement, with RAMS for each and visits planned around occupants and residents.

Stop Pigeons Nesting Under Your Solar Panels

Birds, particularly pigeons, can shelter and nest in the space beneath solar panels. On commercial buildings, this can lead to noise, droppings and nesting debris, with waste potentially reaching gutters, downpipes, cladding and walkways below.

This can create additional maintenance work, particularly where gutters become blocked or areas need repeated cleaning. Cleaning the panels alone does not address the source of the problem, so the soiling can quickly return.

How Our Solar Panel Pigeon Proofing Works

Our solar panel pigeon proofing uses durable mesh barriers fitted around the perimeter of the array to stop birds getting underneath the panels. The mesh allows airflow while keeping the space beneath the array protected.

Solar Panel Cleaning on High and Hard-to-Reach Roofs

Commercial solar arrays often sit on large or high roofs that cannot be reached safely from ground level. For warehouses, industrial units, agricultural buildings and other larger premises, our trained team uses specialist access equipment to reach high-level and difficult-to-access panels.

Mossinator has its own truck-mounted cherry picker, operated by IPAF-qualified staff, meaning we are not reliant on third-party equipment availability when planning your work. Where a MEWP isn't suitable, our trained team can use other appropriate access solutions, including mobile access towers, depending on the site.

If you're unsure what access will be needed, we'll assess this as part of the initial site survey and recommend the most appropriate approach for your array.

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How Our Commercial Solar Panel Cleaning Service Works

We keep the process straightforward, handling the planning and preparation so your team can focus on running the site.

Site Survey and Array Assessment

We assess the solar panels, roof, access requirements, and level of soiling to determine the appropriate cleaning approach.

RAMS Provided

Upon request from the client, we prepare a Risk Assessment and Method Statement (RAMS), outlining how the work will be carried out safely.

Scheduling

We agree a suitable date and arrange the work around your operating hours where required, helping to minimise disruption.

Solar Panel Cleaning

Our trained team arrives with the appropriate cleaning and access equipment to clean the array as agreed.

Completion and Sign-Off

Once the work is complete, we check the results with you and confirm that the agreed cleaning has been carried out.

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Recent Solar Panel Cleaning and Bird Proofing Projects

See examples of Mossinator’s solar and commercial exterior cleaning work, including specialist access for larger and more difficult sites.

Solar Panel Bird Proofing, Buckinghamshire

Mossinator cleaned the solar panels and installed bird-proofing mesh to prevent pigeons nesting beneath the array. This combined approach tackles both existing soiling and the cause of recurring debris.

View Solar Panel Cleaning Case Study

Solar Panel Cleaning Frequency and Contract Options

From one-off cleans to regular planned maintenance, we can arrange a cleaning schedule around your site, installation and level of soiling.

We can provide:

One-off commercial solar panel cleaning
Annual or twice-yearly cleaning plans
More frequent cleaning for sites affected by higher levels of dust, debris or bird activity
Combined cleaning and bird proofing work where required
Out-of-hours or weekend work where available

We'll agree on the frequency based on the size of the array, the site's location and how quickly the panels become soiled, with visits planned to minimise disruption.

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Why Choose Mossinator for Commercial Solar Panel Cleaning?

Specialist access equipment

Our 25m cherry picker has 14.5m outreach, helping us reach high-level and difficult-to-access solar arrays.

20+ years of experience

We bring more than two decades of experience in specialist exterior cleaning.

Recognised industry certifications

City & Guilds, IPAF and PASMA certifications support safe, competent work across commercial properties.

Family-run business

Deal directly with a local team from your initial enquiry through to completion.

Solar cleaning and bird proofing

Address both panel soiling and the source of recurring bird-related debris through one supplier.

Multiple exterior cleaning services

We can also provide roof, gutter and cladding cleaning, giving businesses one supplier for multiple maintenance requirements.

What Our Customers Say

We had our solar panels installed in 2012. Over the years they have slowly been covered in lichen. The generation capacity had reduced so it was time to call in Mossinator.

They arrived promptly and set about cleaning the panels from their large cherry picker. They cleaned the panels perfectly and tidied up all the debris that came off the roof.

We now generate almost twice of that previously, so well worth doing.

We are planning on having the roof cleaned in the near future. I would highly recommend Mossinator, a quality company.

David Weeden

We recently used Mossinator Roof Cleaning to clean the roof at The Dairy at Waddesdon and we were extremely pleased with the service.

From the initial communication through to completing the work the team were professional, reliable and respectful of the site. The results are incredible and they left the building, including the windows and gardens, immaculate.

As an events venue it’s particularly important that contractors working on our site understand the need to minimise disruption and maintain a professional approach and Mossinator handled this very well.

I would have no hesitation in recommending Mossinator Roof Cleaning to anyone looking for a reliable, professional roof cleaning service. A great job from start to finish.

Claire Holland

Mossinator's guys have done a fantastic job of cleaning dirt & moss from our solar panels plus fitting netting around them to pigeon proof them. The quality of the job looks very professional.

The guys were helpful, pleasant and cheerful despite the weather - a credit to the company.

John Timberlake

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Request a Commercial Solar Panel Cleaning Quote

Keep your solar panels operating at their best with professional cleaning and bird proofing from one experienced team. We can arrange one-off or regular cleaning around your site requirements, with specialist access equipment available for difficult-to-reach arrays.

Tell us about your site and solar installation and we’ll discuss the most appropriate cleaning approach. Complete the form below, This email address is being protected from spambots. You need JavaScript enabled to view it., or call 01865 362797 to discuss your requirements.

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Areas We Operate

Based in Oxfordshire, Mossinator provides commercial solar panel cleaning across Oxfordshire, Berkshire, Buckinghamshire, Gloucestershire and Wiltshire, and takes on larger commercial and multi-site contracts across the wider Thames Valley, Surrey, and Cotswold areas.

Oxfordshire: Oxford, Bicester, Banbury, Abingdon, Witney, Didcot, Thame
Berkshire: Reading, Newbury, Maidenhead, Bracknell, Slough, Windsor
Buckinghamshire: High Wycombe, Aylesbury, Milton Keynes, Amersham, Beaconsfield
Gloucestershire: Gloucester, Cheltenham, Cirencester, Stroud
Wiltshire: Swindon, Marlborough, Chippenham, Devizes

Outside these areas? If your site is outside these areas, call 01865 362797 to check whether we can help. We are also happy to travel for larger commercial or multi-site contracts.

Combine Solar Cleaning With Other Exterior Work

Solar panel cleaning is just one part of our commercial exterior cleaning services. We also provide specialist cleaning for windows, roofs, gutters, and cladding, helping businesses maintain their properties through one experienced team.

FAQs

How often should commercial solar panels be cleaned?

We generally recommend cleaning commercial solar panels at least once or twice a year, although the ideal frequency depends on the location, surrounding environment and level of contamination. Panels located near trees, busy roads, agricultural land or industrial areas may require more frequent cleaning. Regular cleaning helps keep panels operating efficiently and protects your investment.

How much does commercial solar panel cleaning cost?

The cost depends on the size of the installation, number of panels, roof access, height and level of soiling. We provide a tailored quotation based on your specific site requirements, with no two installations being exactly the same.

How do you clean commercial solar panels?

We use professional access equipment including MEWPs and scaffolding to access the roof areas and clean the panels. Our process safely removes dirt, dust, bird fouling, algae and other deposits without damaging the panels. Where appropriate, we use purified water to minimise spotting and leave the panels clean and clear.

Can you clean panels on high or difficult-to-access roofs?

Yes. We specialise in accessing solar panels on large and difficult-to-reach commercial properties. Depending on the site, we can use specialist access equipment, including our truck-mounted cherry pickers, allowing our technicians to reach high-level installations safely without the need for traditional scaffolding in many situations.

Do you clean warehouse and industrial solar installations?

Yes. We clean solar installations across warehouses, industrial units, commercial buildings, offices and other large-scale properties. We can work around your operational requirements and arrange one-off cleans or regular maintenance programmes to keep your solar installation performing at its best.

Can you clean solar panels without disrupting our operations?

Yes. We understand that commercial sites need to remain operational, so we can plan cleaning around your working hours and site requirements. Where necessary, we can work early mornings, evenings or weekends to minimise disruption to staff, customers and day-to-day operations.

Do you provide RAMS?

Yes. We can provide Risk Assessments and Method Statements (RAMS) for commercial solar panel cleaning. These detail the work to be carried out, the risks identified and the control measures we will put in place to ensure the work is completed safely.

Do you offer solar panel bird proofing?

Yes. We provide solar panel bird proofing to help prevent birds from nesting and roosting underneath solar panels. Bird activity can lead to fouling, nesting material and debris accumulating around the panels, so bird proofing can help protect the installation and keep the area cleaner. We can assess your installation and recommend the most suitable solution.

What areas do you cover?

We provide commercial solar panel cleaning across Oxfordshire, Berkshire, Buckinghamshire and the wider Thames Valley and South East of England. We work with businesses, commercial property owners, schools, warehouses, industrial sites and other organisations. For larger or multi-site requirements, please contact us to discuss your locations and cleaning requirements.

Commercial Solar Panel Cleaning