How Often Should Solar Panels Be Cleaned? Tips & Advice

how often should solar panels be cleaned

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Keeping solar panels clean is essential for optimizing energy production and ensuring your solar system runs efficiently. Debris of all kinds can accumulate on panels over time. This blocks sunlight and reduces the panels’ effectiveness.

But how often should solar panels be cleaned, and what’s the best approach?

Here’s an overview of factors to consider for proper solar panel maintenance. 

How Often Should Solar Panels Be Cleaned?

The frequency of cleaning solar panels can vary based on environmental factors and the specific location of your installation. Typically, solar panels should be cleaned about once to twice a year, which is usually enough to maintain optimal performance.

However, if your solar panels are located in areas with higher levels of dust, pollution, or pollen, such as near construction sites or industrial zones, they may need more frequent cleaning.

Seasonal Variations

Solar panels may require extra cleaning in specific seasons. For instance, spring can bring pollen and dust, while summer can see bird droppings or even ashes from nearby wildfires accumulating on panels.

Local Weather Conditions

If you live in a region with regular rainfall, nature might do some of the cleaning for you, as rain can wash away dust and dirt. However, rainfall alone may not remove more stubborn substances, like bird droppings, which may need more targeted cleaning.

Roof Angle and Surroundings

Flat-mounted panels tend to accumulate more debris than those with a sloped installation, as rainwater doesn’t easily wash off the surface. Panels located near trees or areas where birds gather might also require more frequent cleaning. If you have a lot of birds in your area, make sure that you clean your solar panels more often. 

Why Regular Cleaning Matters

Solar panels are designed to capture sunlight and convert it into electricity, and even a small reduction in light exposure can lower energy production. Regular cleaning prevents this and maximizes your return on investment by helping panels perform close to their capacity.

Additionally, regular cleaning can increase the lifespan of your panels by preventing the buildup of acidic substances, which may cause damage over time.

When to Seek Professional Help

If your panels are difficult to access or if you’re dealing with excessive debris that can’t be removed easily, hiring a professional cleaning service might be the safest option. Professional roof cleaners are skilled in handling rooftop panels and use techniques that protect the integrity of your system.

How Often Should Solar Panels Be Cleaned?

Now you have a good idea of how often should solar panels be cleaned to ensure effectiveness and efficiency. There’s no point installing solar panels if they aren’t giving you the best electricity conversion rates. 

If you are older and don’t have good mobility or are just too busy to clean your solar panels yourself, you can always speak to Swansea Clean & Seal. We have gained an excellent reputation over the past 10 years and are happy to help you with your solar panel cleaning or any other exterior cleaning needs. 

Contact our team today to get a quote for your cleaning job. 

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