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If you have invested in best solar panels As for your home, keeping them clean is one of the simplest ways to protect your investment and maintain optimal performance. While frequent showers in the UK do a lot of the work for you, periodic cleaning can make a noticeable difference, especially during dry weather or pollen-heavy months.
Dirt, bird droppings, leaves and other debris block sunlight from reaching your panels, reducing output and slowing down your payback period. considering cost of solar panels And no matter how long it takes to recoup your investment, regular maintenance can help ensure that your system continues to deliver strong returns. If you are still wondering If solar panels are worth itProper care is one way to ensure that they are.
How often do I need to clean solar panels?
Several factors determine the frequency of cleaning solar panels. If there are no pigeons nearby to dirty your array, if the panels are at an angle and if it rains regularly, you may not need to clean them as often.
But if pollen, dust, bird droppings and dry particles bother them, regular washing will be required. Leaves and other dirt will also accumulate on panels at lower angles and will need to be washed. If you see bird droppings on your solar panels, you’ll want to clean it up as soon as possible. Bird droppings are acidic and can corrode the surface of your solar panels if left on too long.
As a general rule, you should aim to wash your solar panels every six months with a soft cloth and soapy water. If you can follow this schedule, it’s easier to keep them clean in the in-between months, where running a hose will remove any dirt or debris.
If your solar panels are rooftop mounted, hose-down is probably the safest and easiest way to clean your array, as with good water pressure you won’t need to go anywhere near them.
However, before doing anything, check the documentation that came with your panel for cleaning guidelines. Coatings on panels may vary, and this may mean that using special cleaning agents is a bad idea. However, soap and water should be fine.
Do I need a professional to clean my solar panels?
Probably not. But if you want, and they are particularly dirty, there are companies that will do it by doing the same thing as a window cleaner and using the same long-handled tools to clean them with soapy water. If you have particularly high ceilings and don’t trust stairs, this might be a good option.
Prices will vary depending on where you are in the country, so get a few quotes. According to Energy Saving TrustPrices can range from £20 to £200 depending on array size and location.
How do I clean my solar panels?
If you want to learn how to properly clean solar panels, start by turning off the system. Then, use this opportunity to make a general check of their condition, detecting any damage to the cables or other electrical contacts. If you notice any, get it fixed before exposing electrical components to water. If you’re ready to move forward, follow these simple steps:
- Shut down your system. Before doing anything else, shut down your solar panel system according to the manufacturer’s instructions. This ensures safety while cleaning.
- Inspect the system. Take a few minutes to check the panels, cables, and any visible connectors. If you notice any damage or exposed wires, do not proceed – call a professional instead.
- Choose the right equipment. It is best to use a long handled brush with soft bristles to avoid damage to the cells in your solar panels.
- Prepare your cleaning solution. Use mild soap mixed with water. Avoid washing-up fluid, as it may leave residue on the panels.
- Rub the panels gently. Use a brush to remove any dust, dirt, bird droppings or pollen. Be careful not to apply too much pressure.
- rinse thoroughly. Use a medium-pressure garden hose to clean the panels. Avoid using a pressure washer, as it can damage the cells.
- Dry carefully. Use a soft cloth, squeegee or solar panel wiper to remove excess water and prevent water spots.
- Repeat as needed. Depending on your environment, repeat this process every few months or when performance degrades significantly.
This is one of the safest and most effective methods when learning how to clean solar panels at home.
What is the best thing to use to clean solar panels?
The safest way to clean solar panels is with soft water, a non-abrasive sponge or cloth, and a telescopic pole. Avoid detergent, pressure washer or abrasive pads, as they can damage the surface coating. In most cases, a bucket of lukewarm water and a light mop is enough to remove dirt and dust. For inaccessible roofs or heavy construction, consider hiring a professional solar cleaning service equipped with water-powered poles and purified water systems.
Do you need to turn off solar panels before cleaning?
Yes. Before cleaning, always switch off your solar system using the isolation switches on both the DC (panel) and AC (inverter) sides. This prevents any risk of electric shock or system damage. Never touch connectors or wiring, and avoid cleaning in wet or stormy weather. If your panels are mounted on a steep or high ceiling, it is best to use professional cleaners, as they will follow safety protocols while maintaining your system’s warranty coverage.
What to avoid when cleaning your solar panels
Use common sense. Do not stand on panels, do not stand on a pitched roof that is not designed to take your weight, and do not use a power washer, as this may damage your panels. These tips, although simple, will go a long way in helping you avoid damage and stay safe as you know how to clean solar panels effectively without professional help.
What else should I do for maintenance?
As well as annual cleaning and inspection for damage, which you can do yourself, it’s worth having a professional look at your panels every five years to catch any issues before they become more costly. This may include:
- cracks in panels
- frayed cable
- loose fixings to panels
- Health of your inverter
These checks may form part of your warranty, so be sure to check to see how often your system needs to be serviced.