Solar Panel Cleaning : A Step By Step Guide On The Dos And Donts

Solar Panel Cleaning: A Step by Step Guide on the Do’s and Don’t

Solar Energy Systems are generally free from frequent maintenance, cause they do not consist of any physical moving parts, which reduces their maintenance hassle. But most-Solar Panel cleaning is still necessary, which you should carry out periodically. 

It is one of the significant aspects of the overall maintenance of the solar system, which you cannot neglect. Solar panel cleaning equipment is in high demand because the experts have proved that it is the best way to maximize the energy production from those systems. 

Most of the residential and commercial sectors that have adapted the solar panel cleaning kit have reported that they have experienced a double amount of electricity output than before. 

Therefore, all residential and commercial sectors with solar panels need to use the respective solar panel cleaning kits to maintain their proficiency. This article will educate you on every aspect of such solar panel cleaning tools. 

The Necessity of Solar Panel Cleaning

The dirt accumulation over the solar panels declines their ability to absorb the sunlight. The design of solar panels allows them to allow the light to enter their solar cells, which they can convert into DC (direct current) electricity [1]. 

Residential Solar Panels Cleaned

Some dirt and debris such as dust, pollen, and bird droppings prevent the solar cells from producing electricity, and as a result, Hence, this leads to a decline in energy production. 

Many people intend to clean solar panels all by themselves, but this is not possible at all times. It is because not everyone is equipped with the right tools and expertise. As a result, trying with low expertise might cause serious accidents and probably damage your solar panels.

Therefore, hiring professionals to carry out solar panel cleaning solutions is better. They will bring in the best tools and solution experts to clean solar panels in no time. Moreover, you will find many companies around your city that offer immediate solar panel cleaning solutions within the same day. 

So, the prime reason for using a solar panel cleaning kit is to enhance its energy efficiency. When the solar panels are clean, the sun rays will directly fall upon the cells and eventually increase the produced electricity units. 

As per the statistics, regular cleaning of the solar panels increases the power output by 30% or more. Therefore, the cleaning process for solar panels is necessary for all residential and commercial property owners. 

The Description On The Solar Panel Cleaning Tools And The Kit

The solar panel cleaning equipment is necessary for you to have if you have solar panels installed over your property. Solar panel cleaning can be done with various options in hand. But if you have the panels accessible to your reach, you can try the kit for your suitability. 

Solar Panel Cleaning Tools

Solar panels act as a magnet to all forms of dust and debris that fly around the environment. Over time, the sun will just cake all of the dust and dirt over the panels, which will be difficult for you to clean in the long run. 

Getting a complete cleaning kit to clean solar panels is what can save your day. If you have a small solar array, then you can eventually clean it all by yourself with the tools available within the kit. But if the solar arrays are extensive and are powering the industries, you might need to call in for professional assistance. 

But, as this section is talking about the small residential and commercial property solar panels, the kit will be proficient at helping you clean solar panels all by yourself. So, to help you understand the usability of the kit, you should first know what the kit includes in it.

The cleaning tools that you will get within the kit are:

  • Extension poles
  • Premium Squeegee rubber
  • Wash bar
  • Microfiber wash sleeve
  • Tool handle(s)
  • Flow-thru extension poles
  • Soft Flow thru brush and angle adaptor
  • Cleaning brushes
  • Microfiber cleaning cloth
  • Manual for using solar panel cleaning equipment
  • Printed instructions, etc. 

These are the excellent tools you will need to approach solar panel cleaning. With the right sense of approach and proper understanding of the given instructions, you will not need professional help to clean the panels. 

Things to Consider While Cleaning the Solar Panels

Solar Panel Cleaning Brush

Cleaning the solar panels is not a tough job! It is just like washing your car frequently. Though it’s considered easy doesn’t mean you should handle it recklessly. There are specific ways how you can clean the solar panel efficiently. You need to remember a few things to guarantee the elongated service efficiency and life of the system. 

Suppose you are approaching the wrong methods for cleaning modules, such as impaired quality of water, use of chemical cleaning agents, and others. In that case, the solar array components will lose their integrity. Moreover, you will also impact the system performance will also be impacted! 

If you are willing to perform regular cleaning of the solar panels, then you need to get theoretical training before that! 

#1 Consider The Safety Guidelines While Using Solar Panel Cleaning Equipment

The solar modules are connected in a series that generates high DC output. If there are any cracks within the modules or any damaged joints/cable, it can be hazardous for the person cleaning it. 

The safety hazard escalates to a peak if the modules are wet! Even when the sunlight levels are low, the solar arrays will still generate high current and voltage. 

Therefore, it is essential to thoroughly inspect the damage, loose connections, cracks, and other deformities before cleaning. 

Apart from that, the cleaning personnel should also wear Personal Protective Equipment with electrical insulation. At the same time, they approach using the solar panel cleaning brush over the modules. 

#2 Perfect Time For Moving Ahead With Solar Panel Cleaning Practice

Solar Panel Cleaning Brush

There is a time recommendation for using the cleaning bushes over solar panels. You should approach your measures with a solar panel cleaning brush in low light conditions. 

You should wait for the time when solar power production is the lowest. Moreover, cleaning the solar panels during the day with cold water might set the panels into a thermal shock stage. 

When the sun shines during the day, the panels heat up, and you should not approach the cleaning of the solar panels with cold water, which will drop its temperature rapidly and eventually damage the panels. 

Hence, the best time to clean the solar panels is during the early morning hours. At this time, the solar panels won’t be in operation and won’t be heated up. Therefore, the risk of electrical shock will reduce, and the panels’ temperature will also be below. 

#3 Consider The Quality Of Water You Use With Solar Panel Cleaning Brush

Water Sprayed on Solar Panels before using the Brush

While using the cleaning brushes for panel cleaning, you should ensure they are deionized. If you do not have access to deionized water[2] to clean the panels, you can use tap water or rainwater. You should filter the rainwater to eliminate all debris and rough objects. 

But remember that the tap water should be of low mineral content with a hardness quotient of less than 75ppm. The water should possibly be free from physical contaminants and grit. It is because water with grit and contaminants will possibly scratch the panels when you rub the scrubbing head of the brush. 

So, keep changing the water again and again to avoid scratches and damage to the panel surface. 

#4 Proper Use Of Cleaning Agent With All The Tools

You should count on using a mild and non-abrasive detergent with deionized water. It is preferable to use non-caustic detergent as well! 

Using Cleaning Agents on Solar Panels before Cleaning

Do not prefer to use abrasive cleaners, alkali detergent, or acid solutions, as they will deteriorate the life of panels. 

Avoid using metal objects or any harsh product for removing the caked debris over the solar panels. It might just scratch the solar panel glass and adversely impact its performance. 

The scratches over the solar panel glass will cast shadows, and the energy absorption potential will drop. Therefore, use only the cleaning brushes and agents offered with the solar panel cleaning tools in the kit. 

The appropriate cleaning heads, cleaning agents, and everything necessary are included within the solar panel cleaning products you purchased with the kit. So, count on using that cleaning solution only! 

#5 Removing The Stubborn And Debris/Marks While Approaching With Solar Panel Cleaning Solution

Some stubborn stains, such as dead insects, tar, and bird droppings, cannot be cleaned easily. You will be provided with a soft brush or sponge in the kit to get a clean surface. 

Debris Spread out on the Solar Panels

If not brush, you can also use a microfiber cloth for cleaning tough debris and stains. After cleaning the stubborn stains with soft brush bristles, immediately rinse the module with lots of water. 

#6 Maintain The Optimal Water Pressure With the Use Of Standard Garden Hose

You don’t get a garden hose among all solar panel cleaning products! But that doesn’t mean you would go with anything you have access to! The water pressure should not exceed the measure of 35 bar at the nozzle. 

Using high-pressure hoses for solar panel cleaning might exert too much pressure on the modules and damage them. You can go with the standard garden hose and set the water pressure for optimal and safe cleaning. 

You will get it from any usual hardware store or a garden tools store. You can also consider renting it or borrowing it for a day or two when you seek to clean the panels. It will help you save the entire buying cost! 

#7 Check The Water Temperature On Priority

The temperature of cleaning water should be similar to that of the ambient temperature at cleaning time. The cleaning process should be approached when all modules are in the cold stage. This is to avoid the scenario of thermal shock, which can eventually result in cracks over modules. 

#8 Look For The Warranty Cleaning Solution

Most solar manufacturers include solar cleaning as a warranty condition. If you are approaching the cleaning efforts yourself and damage the panels by any means, that voids the warranty cleaning service. 

It will send an impression to the manufacturers that you didn’t take proper care of the panels, which have been damaged. Therefore, you will have to pay for replacing the modules and cleaning them. 

#9 Can A Rainy Season Keep The Solar Panels Clean?

Most people have an assumption that the rainwater will clean the dirt and dust over the solar panels during the monsoon season. But this doesn’t happen! You can take the example of the car windscreen! If you leave the car in the rain for cleaning, you will see the airborne dust particles settling on your windscreen. 

Moreover, rainfall debris and dust will attach to the panels more rigidly and increase the cleaning effort after rainwater evaporates. You will need to use a squeegee rubber or a soft brush to wipe the surface of the solar panels with clean water or filtered & collected rainwater. 

The StepWise Process to Approach Solar Panel Cleaning

After all of the primary considerations, it is now time for you to get the final understanding of the steps you need to approach for cleaning the solar modules with your kit! The steps are as follows:

  1. Firstly, spray all panels with water to remove any loose gunk or debris. 
  2. Now, mix the cleaning solution with a bucket full of water. 
  3. Now, use the soft bristle brush and dip it in the bucket to soak it in solution. 
  4. Go ahead and scrub the panels properly on all sides. 
  5. Continue with this process until you are satisfied with removing all of the debris from each panel within the solar arrays. 
  6. Give time to some modules as the sap and bird droppings might consume a little more effort and time. 
  7. Now, you can use the squeegee to clean all of the panels within solar arrays until you have no water left over them. 
  8. Get the solar arrays clean, and you are ready with a clean and high-efficiency solar panel system. 
  9. Put aside and store everything at its respective place! Now, repeat this cleaning process every 6 months. If you make this your habit, the solar panels will remain clean over a long time and eventually produce the maximum possible energy. 


So, this is a complete understanding of solar panel cleaning kits and their usage. If you are willing to maintain the life of your energy-conscious investment, then you need to take the step to seek proper cleaning maintenance. 

Industrial solar panels are maintained and cleaned over time by hiring experts in their jobs. But the small offices and residential sectors with solar panels can seek to clean the panels all by themselves with an affordable cleaning kit. 

But still, some companies are offering affordable cleaning solutions for solar modules. The residents and business owners who do not have much time to spare for self-cleaning their solar energy panels can seek help from these cleaning firms. 

Check with their service offerings, prices, the tool they use, experience, and all other factors to ensure that they carry out the work for you. The frequency of cleaning solar panels depends upon the location you live in. 

Suppose your property with a solar panel system is located in a calm area away from polluted cities and manufacturing plants. In that case, you can wash your solar panels once every 2 years. But if you are residing in some busy area, you should count on cleaning the panels twice every year. 

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