What to Know About Cleaning Your Solar Panels

Posted on Sep 25th 2023

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What to Know About Cleaning Your Solar Panels

Solar panels are an investment in a sustainable future, allowing you to harness the power of the sun to generate electricity for your home. However, like any other investment, solar panels require regular maintenance to operate at peak efficiency. One question that often arises for homeowners new to solar energy is whether or not solar panels need to be cleaned. Read on to learn more about the importance of cleaning solar panels, brought to you by our experts at Custom Energy!

Do Solar Panels Really Need to be Cleaned?

Though the question of whether solar panels need cleaning has become a bit of a debate amongst homeowners, the short answer is yes. Solar panels require a good cleaning every so often to ensure they are still working at full capacity. Dust, dirt, pollen, bird droppings, leaves, and other debris can accumulate on the surface of your solar panels over time, reducing the amount of sunlight that reaches the solar cells and decreasing the panels' energy production. So, while they don't need to be cleaned nearly as often as other areas of your home, neglecting the cleanliness of your solar panels can translate into a significant loss of energy production and potential savings.

How to Clean Solar Panels

Most of the time, regular rainfall is capable of rinsing dust off your solar panels and keeping them at a 95% production of their maximum capacity. However, often, it's more than dust impacting the output of your panels. In this case, you'll need to give your panels a good wash.

Luckily, cleaning your solar panels is a fairly straightforward process that you can often do yourself. Here are a few tips to guide you through the process:

  • Take safety precautions. Before you begin, ensure your safety. If possible, turn off the solar panel system. Ensure you can safely access the panels and use appropriate safety equipment like gloves and a stable ladder.
  • Use gentle tools. Avoid abrasive materials like harsh chemicals, scrub brushes, or abrasive sponges that can damage the panel's surface. Instead, use soft materials like a non-abrasive sponge, a squeegee, or a soft brush with a long handle.
  • Water only. You don't need specialized cleaning solutions; clean water is usually sufficient. Hose down the panels to remove loose dirt and dust. For really stubborn dirt or bird droppings, you can mix a mild detergent with water and gently apply it to the panels. Then, use your soft brush or sponge to clean the surface. Rinse thoroughly with clean water afterward.
  • Choose the right time. It's best to clean your solar panels early in the morning or late in the evening when they are cool to the touch. Washing them when they are hot from the sun can lead to thermal shock and potential damage.
  • Aim for every six months. Ideally, you should clean your solar panels at least twice a year. In dusty or heavily polluted areas, more frequent cleaning may be necessary.
Image of a woman below her solar panels - learn why cleaning your solar panels is important with experts at Custom Energy.

Cleaning your solar panels is essential to their maintenance. At Custom Energy, we strive to ensure our clients are happy with their purchase. While we do not provide cleaning services, our 25-year warranty will give you the peace of mind that your panels will last for years. Contact us today for a free estimation!

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  • Custom Energy - 5 Star Review By MIchael a

    MIchael a

    google

    Custom energy had repaired my solar panels, replacing all inverts and associated controls on Sun Power warranty. That is why I had Custom energy install my batteries for solar backup. They did a wonderful job, I trust them completely.

  • Custom Energy - 5 Star Review By brad burnham

    brad burnham

    google

    They kept me informed through the whole process of installation. We had the roof replaced during the process, and the new roof looks amazing. The panels are working like they should so far(1 month), unless it snows then they work fine once the snow melts.

  • Custom Energy - 5 Star Review By Cheryl Cook

    Cheryl Cook

    google

    We really liked the "all in one solar system" not components from different manufacturers. The system was expertly and timely installed. Both SunPower and Custom Electric meet all of our expectations.

  • Custom Energy - 5 Star Review By elizabeth Tubbs

    elizabeth Tubbs

    google

    Custom Energy provided detailed, accurate and timely information. Our own research indicated that the manufacturer (SunPower) as well as Custom Energy provides quality products, good service and prompt response to any questions or issues. Our system was installed in a timely manner and is operating better than expected. I appreciate the all encompassing service approach - if I have a problem I call the same person regardless of the origin of the issue. I would not hesitate to recommend Custom Energy and SunPower to anyone looking for a quality system and install.

  • Custom Energy - 5 Star Review By N Brown

    N Brown

    google

    Called for a bid and they were helpful and responsive. The layout appears to be able to satisfy our needs, but we were not able to move forward with the installation until later. Overall was good to get a bid and understanding of next steps.

  • Custom Energy - 5 Star Review By Bridget Strickland

    Bridget Strickland

    google

    They replaced the microinverters on our solar panels in a timely manner. Made appointment, showed up on time and did a great job.

  • Custom Energy - 5 Star Review By Joel Cantor

    Joel Cantor

    google

    I purchased a 20kw system for $64.2k in 2021. I wanted the best panels from a manufacturer with the best reputation. SunPower’s panels and equipment met these requirements. Their Utah affiliate, Custom Energy, visited my home within the week of my inquiry and provided me with a clearly illustrated proposal which said my electric bill would go down from over $400 per month to $30 per month. I was skeptical of course. The installation occurred three months thereafter with little hassle and done with precision in one day. Other electricians visiting my home said the install was the “cleanest” they’ve seen. One year in and my monthly power bill is just $16…yes…$16. It’s amazing and I am very excited to no longer have a huge bill to run our air conditioning which can run very high in Moab, Utah’s desert where 100 degrees is typical. Love solar and love Custom Electric.

  • Custom Energy - 5 Star Review By Lilburn Deskins

    Lilburn Deskins

    google

    The company was professional from start to finish. They had the product on hand, told me when the installation would start and when it would be finished. They provided weekly feed back telling me where the approval process stood and what I needed to do. After installation, they were there to answer questions about the system. When friends ask about my panels, I highly recommend SunPower by Custom Energy to them.

  • Custom Energy - 5 Star Review By Robert Cook

    Robert Cook

    google

    The sales process was professional, easy to understand, and answered all our questions. The salesman was helpful throughout the whole process from placing the order to follow up after start-up. The company was also responsive in getting us documents necessary for filing for our tax rebate. The installation crew was quick and professional and did an excellent job. We only received about 2 days notice before their arrival. A little more notice would have been helpful. The new meter from our power company was installed a few days after installation was complete. When that was done the system was turned on. However, no power was being generated because of a communication problem. After calling Custom Electric they sent someone to rectify the problem within a day. Since then, the system has been operating well without any issues. The system size seems to have been determined well since it is generating enough power for our home usage and provides some excess which goes back into the grid. The app that reports how much energy the system is producing and how much the house is using is confusing and just wrong. This could definitely be improved since it has a lot of potential to give customers insight into their energy usage and production. Overall, I would highly recommend SunPower Equipment and Custom Electric to anyone who intends to add solar power to their house. The experience was positive and the people were helpful and responsive.