Are you thinking about adding solar panels to your roof? Great choice! Solar energy is a smart way to save money on your electricity bills and help the environment. But with so many options out there, how do you know which solar panels are best for your home?

Do not worry, we have got you covered. Here is a simple guide to the top 5 solar panels for your rooftop.

Why and When to Clean Your Solar Panels?

Solar panels convert sunlight into electricity through photovoltaic cells. If these cells are covered with dirt, dust, or debris, the panels’ efficiency will decrease. According to research, dirt and other particles can reduce solar panel efficiency by up to 7%. Regular cleaning ensures maximum sunlight absorption and optimal energy production. Cleaning the panels once or twice a year is a good practice. Factors like your location, weather conditions, and the amount of debris can influence how often cleaning is needed. Here are some indicators that your solar panels need cleaning:

  • If you notice a drop in the energy output of your solar panels, it might be time to clean them.

  • A simple visual inspection can tell you if there is a significant buildup of dirt and dust on the panels.

Tools And Materials Needed

To clean the solar panels, you will need the following tools and materials:

  • Extension ladder

  • Garden hose with spray attachment

  • Soft brush or sponge

  • Small hand wiper

  • Water sprayer

  • Gloves

  • Commercial window cleaner or a soapy solution to clean dirt (mix of water and dish soap or vinegar and water).

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Steps To Clean Your Solar Panels

  • 1

    Ensure all the necessary tools and materials are within reach. Set up your extension ladder securely.

  • 2

    For your safety and to protect the solar panel system, turn off the power supply before starting the cleaning process.

  • 3

    Using a garden hose with a spray attachment, rinse off the solar panels and the surrounding roof to remove loose dirt and debris.

  • 4

    Fill a water sprayer with a cleaning solution (either a commercial cleaner or a homemade mix). Spray a small section of one solar panel with the solution and let it sit for a couple of minutes to break down the grime.

  • 5

    Use a soft brush or sponge to gently scrub the panel where you applied the cleaning solution. Avoid using abrasive materials to prevent scratching the panels.

  • 6

    Continue applying the cleaning solution and wiping down the panels in small sections until all the panels are clean.

  • 7

    Rinse the panels thoroughly with the garden hose to remove any remaining cleaning solution. Use a squeegee attached to an extension pole to remove excess water and dry the panels.

Once the panels are clean and dry, you can turn the solar panel system back on.

Safety Precautions

Cleaning solar panels involves working at heights (as it is kept on roofs), which can be dangerous. Here are some safety tips to follow:

  • Use a sturdy ladder and ensure it is stable before climbing.

  • Wear non-slip shoes for better grip to reduce the risk of slipping, especially when climbing the ladder or walking on a potentially wet roof.

  • Have someone assist you by holding the ladder.

  • Turn off the solar panel system before starting the cleaning process. It will ensure no electrical current runs through the panels while you clean them, reducing the risk of electric shock.

A person cleaning solar panel with an extension ladder
Cleaning of Solar Panel System is done with a cloth.

Additional Tips For Cleaning Solar Panels

Half-cut cell panels are a variation of traditional mono or polycrystalline panels. Here is why they are special:

  • Clean during cool hours: It is best to clean your panels in the morning or late in the afternoon when the sun is not too harsh. This prevents the cleaning solution from drying too quickly and makes the cleaning process more comfortable.

  • Use soft water: Avoid using hard water which contains a lot of mineral deposits that can reduce the efficiency of the solar panels. Use distilled or deionised water.

  • Avoid pressure washers: High-pressure water can damage the solar panels. Stick to a gentle spray from your garden hose.

When To Hire Professionals?

While cleaning solar panels is generally a simple task, there are situations where hiring a professional might be your best option. If you are uncomfortable working at heights, have physical limitations, or simply do not have time, consider hiring a professional cleaner. Professional cleaning services can cost around 1,500 to 3,000 rupees, depending on the number of panels and the area you are living in.

Remember to prioritise safety and use the right tools and cleaning solutions to avoid damaging your solar panels. With proper maintenance, your solar panels will continue to serve you well for many years. Happy cleaning!

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FAQs

It is best to avoid using hard tap water for cleaning solar panels, as it may contain minerals that can leave residue and reduce efficiency. Instead, use distilled or deionized water for optimal results. If you must use tap water, ensure it is soft and free from heavy mineral content.

Bird droppings can be more stubborn than regular dirt and may need extra attention. Use a mixture of water and mild soap or vinegar to spray the affected area and let it sit for a few minutes. Gently scrub with a soft brush or sponge, and rinse thoroughly. Regular inspections can help address such issues promptly.

Yes, you can use eco-friendly solutions like a mixture of water and white vinegar, or a mild soap diluted in water. These solutions are effective in cleaning dirt and grime without harming the environment. Always ensure to rinse the panels thoroughly to avoid any residue that might reduce efficiency.

Author : Lakhan Singh

Lakhan, an industry veteran with 34 years of experience, joined Alpex in 2020 and leads plant operations. He ensures overall responsibility for high-quality photovoltaic solar panel production, focusing on cost efficiency, productivity, and technology upgrades in line with market trends.

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