There are various reasons why solar panels get dirty. Some of the most common causes include:

• Salt and ammonia residue near livestock farms, poultry farms, or coastal areas.
• Cracks, breaks, or corrosion caused by using inappropriate cleaning materials or inexperienced personnel.
• Bird droppings on the solar panels.
• Residues and dirt caused by high humidity and temperature.
• Insects or bugs dying on the solar panels.
• Agricultural chemicals or pesticide dust if the panels are near agricultural spraying areas.
• Soot and ash from industrial plants or exhaust gases from vehicles.
• Pollens and flower dust from trees falling on the panels.
• Dust carried by the wind, causing both dry and wet dust deposits.
• Limescale and residue from using tap water during cleaning.
• Debris from leaves, seeds, or organic materials from surrounding trees.

The cause of contamination on a solar panel changes based on the environmental conditions where it is located.

How Is Solar Panel Cleaning Done?

During solar panel cleaning, pure water or certain alcohol-based cleaners are commonly used. Alcohol-based cleaners are typically preferred in winter to prevent freezing on the panels. However, alcohol-based cleaners can leave water stains, which might reduce the panel’s efficiency, so pure water is generally used when the risk of freezing is low.

Deionized pure water does not leave any stains on the solar panels, enhancing the efficiency of the cleaning process. Additionally, pure water is an insulator, preventing electric shock risks and avoiding corrosion.

During the cleaning process, non-abrasive solar cloths should be used. If solar cloths are unavailable, soft dish sponges or soft brushes can be used. It’s also recommended not to use high-pressure water during cleaning, as it could cause micro-cracks in the panels.

Considerations During Solar Panel Cleaning

Solar panel cleaning is crucial for maintaining the system’s efficiency and lifespan. However, improper handling during the cleaning process can damage the system, either knowingly or unknowingly. Here are some key considerations during cleaning:

• Safety: Solar panels are often installed on high roofs or elevated areas, so during the cleaning process, ensure that proper safety measures are in place to avoid falls. Since solar panels generate electricity, it is crucial to wear insulated gloves and use deionized pure water to avoid electric shock.
• Panel Integrity: Avoid stepping on the panels during cleaning as it may cause visible or invisible cracks. This can affect the performance of the panels and lead to potential electrical hazards due to rainwater or cleaning fluids leaking into cracks.
• Avoid Chemical Cleaners: Do not use detergents or chemical cleaning agents, as they can damage the panels and reduce their efficiency.
• Temperature Considerations: Solar panel cleaning should ideally be done in the early morning or late evening when the panels are cool. Cleaning them while hot can make the process more difficult.
• Regular Maintenance: Panel cleaning should be performed at the beginning of each season and at regular intervals to maintain their efficiency. Special solar brushes should be used during the cleaning process.
• Water Temperature: The temperature of the cleaning water should be close to the temperature of the panel. Avoid pouring cold water on hot panels, as this may cause thermal shock, rendering the panels unusable.

As shown, solar panel cleaning is not as simple as it might seem, and various factors need to be carefully considered to avoid damaging the panels. For a professional cleaning job, you can consult a company that specializes in solar panel maintenance or opt for a robotic cleaning solution.

Robsys Cleaning Robots for Panel Cleaning

As mentioned earlier, solar panel cleaning can be done manually or with the help of cleaning robots. Robsys offers cleaning robots specifically designed for solar panel cleaning. But why should you consider robotic cleaning?

• Human Safety
• Panel Safety
• Energy Continuity

At Robsys, we have been developing robotic solutions for solar panel cleaning for 10 years. With our patented cleaning robots, we enhance the energy efficiency and lifespan of solar panels, contributing to a sustainable future in energy. Our robots are easy to use, long-lasting, and come with fast post-sales service, including remote support and on-site service within 72 hours if needed.

We offer solar panel cleaning robots in 3 different series:

1. RTM Series: These robots are designed for both ground and rooftop installations. They feature remote control operation, daily cleaning capacity of 1-3 MW, dual directional brush system, and both battery and electric options. With their advanced technology, they can clean panels effectively without scratching the glass.
2. YTM Series: These robots are customized for specific projects and institutions. They can clean 2-6 MW per day and are equipped with advanced features such as remote control, high-speed cleaning (12-16 meters per minute), and a durable build to withstand different conditions.
3. RTM Series: These robots are designed for cleaning solar panels on rooftops and other elevated areas. They are compatible with all types of solar panels and feature compact systems integrated with pure water for cleaning.

To provide you with an effective and efficient solution, Robsys cleaning robots are a superior alternative to manual cleaning, offering advantages in speed and safety.

For more information or inquiries, you can reach out to Robsys at +90 216 206 00 96, visit our contact page, or email info@rob-sys.com.