PV Plant Panel Cleaning Service: Process and Price Factors

Not every plant owner needs an in-house cleaning team and equipment. If a few cleanings a year are enough, buying a professional solar panel cleaning service is usually wiser than assigning a team and investing in machinery.

So how does this service work, how is a quotation built, and what should you look at when choosing a company? In this article we walk through the process from start to finish.

How does the cleaning service process work?

1. Site survey

Everything starts with getting to know the site. The panel count, the array type, the panel tilt, the installation height, the access routes and the position of the water source are all assessed. Without this information neither a realistic duration nor a correct price can be produced. On small sites the survey can be done remotely through shared photos and dimensions, while on large sites an on-site inspection is preferred.

2. Deciding on the method

The conditions of the site determine which equipment will be used. On wide sites with regular arrays, robotic cleaning is the basis; complementary equipment such as motorised brushes is planned for edge rows, narrow passages and irregular areas. On sites with heavy bird soiling, additional solutions such as a scraping attachment come into play.

3. Project-based quotation

After the survey, a working plan and a quotation specific to the site are prepared. The quotation covers the equipment to be used, the estimated duration, the team size and, where relevant, periodic maintenance options.

4. Execution

Cleaning is scheduled for the hours when the panel surface is cool. The robot is placed on the arrays and the work is carried out with controlled water and a soft brush. Chemicals are avoided. Site safety rules are applied throughout the work.

5. Reporting and interval recommendation

After the work the condition of the site is reported. Any physical issues found (loose connections, cracked glass, crushed cables, corrosion) are shared, and a periodic cleaning schedule suited to the site is recommended.

Factors that affect the cleaning price

It would be wrong to quote a single list price for solar panel cleaning; pricing is project based. The main factors that shape a quotation are:

• Site size: The total panel count and panel area are the basic measure of the job. As the scale grows, the unit cost usually falls.
• Installation type: A ground-mounted plant, an industrial roof and a house roof each require different equipment and different safety measures.
• Access difficulty: Whether vehicles can enter the site, how the equipment will be carried and how the roof is reached all affect the duration directly.
• Degree of soiling: Sites that have not been cleaned for a long time, or that carry bird droppings and layers of mud, demand more effort.
• Water source: If usable water is available on site the cost falls; if water has to be transported, that item is assessed separately from the quotation.
• Distance and logistics: The travel distance of the team and the equipment to the site is taken into account.
• Interval commitment: Contracts covering more than one cleaning a year usually carry a lower unit cost.
• Panel tilt and array layout: On regular sites where the robot can work freely the duration is shorter; on irregular sites it stretches.

For this reason, the only way to get a sound price is to share the details of your site and request a quotation.

A common mistake: looking only at the number

At first glance, quotations from different companies may look like nothing more than a price difference. Yet their scope is often not the same. One quotation may cover only brushing the panel surface, while another also includes removing stubborn stains such as bird droppings, cleaning the frame corners, inspecting the site and reporting. The equipment used and the water quality also affect the result directly.

When comparing quotations, therefore, ask clearly what the scope is, which equipment will be used and what will be delivered to you at the end of the work. Cleaning that looks cheap but is carried out with the wrong method can leave permanent damage on the panel and turn into a far greater cost.

Questions to ask when choosing a cleaning company

• Which equipment do you work with, and is it suitable for my panel type?
• Do you use chemicals when cleaning?
• How do you control the water pressure?
• Which safety measures do you take for working at height?
• Do you provide a report after cleaning?
• How is liability defined for damage that may occur on my site?
• Do you offer a periodic maintenance option?

A quotation that answers these questions clearly is far more reliable than a simple price comparison.

Why Frobot?

Frobot Robotic Systems is a company that manufactures its own solar panel cleaning robots. On the service side this turns into a direct advantage:

• We build our own equipment: The robots we use in the field are our own design; when needed we can adapt the equipment to the site, including the brush length.
• Local manufacturing, fast service: The supply of spare parts and consumables does not depend on imported equipment, so work never stalls on site.
• Chemical-free cleaning with controlled water: We follow an approach that harms neither the panel surface nor the environment.
• Service across Turkey: We are based in Ordu and carry out field work throughout the country.
• Both service and equipment: We can either do the cleaning for you or supply a robot for your own team. We base the decision on what the site actually needs.

Frequently asked questions

Do I have to shut the system down during cleaning?

The execution plan is set according to the site. Because cleaning is usually done in the early hours when production is low, the loss is minimal; where necessary the working plan is agreed together with your operations team.

How often should I buy the service?

The dust load of your region, bird density, panel tilt and rainfall pattern are decisive. After the first cleaning you can monitor your production data and derive a realistic interval; we include a recommendation on this together with the quotation.

Do you also serve small rooftop systems?

The method applied changes with the size of the site. On small systems we work with motorised brushes and on large systems with robotic equipment. Simply send us your location and panel count.

How can I see that efficiency has increased after cleaning?

Comparing the specific yield (kWh/kWp) of the days before and after cleaning under similar irradiation is the most practical method. The difference in your inverter reports shows the value of the work directly.

Request a quotation for your site

Send us your panel count, your location and your installation type, and we will prepare a cleaning plan and quotation specific to your site. For details you can review our services page or reach us directly through the contact page.

If you are considering equipment for your own team, take a look at our ATA 120 and ATA 80 models, and at our products page for the other options.