How Often Should You Clean Your Solar Panels? – A Comprehensive Guide

how often to clean solar panels

Together, let’s spread awareness and contribute to a greener future.

Solar panels are relatively low-maintenance, requiring only occasional cleaning. Solar panels require a clear passage to the sun to function at their best.

Are you planning to invest in solar panels or considering going solar? It’s essential to understand the importance of regular maintenance to maximize energy production.

Moreover, solar panels are exposed to various environmental elements that can impact their efficiency, such as dust, pollen, bird droppings, and more. In this blog, we will explore the factors determining the cleaning frequency and recommend how often to clean solar panels.

So, what are you waiting for? Get ready to enhance your solar panel’s longevity and productivity!

How Often Do Solar Panels Need to Be Cleaned

Your solar panel needs cleaning depending on various factors such as your location, weather conditions, and surrounding environment. While there isn’t a one-size-fits-all answer, here are some general guidelines:

Residential Installations

For most residential solar panel cleaning them at least once or twice a year is recommended. However, more frequent cleanings may be necessary if you live in an area with heavy dust, pollen, or bird activity.

Commercial or Large-Scale Installations

Commercial solar systems, especially those in industrial areas or near busy roads, may require more frequent cleanings due to increased pollution levels. It is advisable to clean these panels every few months to ensure optimal performance.

Seasonal Considerations

Consider scheduling cleanings before seasons with high pollen or dust levels, such as spring or fall. This can help remove potential buildup that could hinder your panels’ efficiency.

It’s important to note that these are general recommendations, and you should assess your situation. Regular visual inspections can help you identify when commercial solar panel cleaning services are necessary. Additionally, if you notice a significant decrease in energy production or visible signs of dirt buildup, it’s best to clean your panels promptly to maintain their performance.

Signs That Your Solar Panels Need Cleaning

Reduced Energy Production

You must be exploring how often do clean solar panels. If you notice a significant drop in your solar system’s energy output, it could indicate that dirt or debris obstructs sunlight absorption. Cleaning the panels can restore their efficiency.

Visible Dirt or Debris Buildup

Take a closer look at your solar panels and check for any visible dirt, dust, leaves, bird droppings, or other debris. If you can see a noticeable layer of grime, it’s time for a cleaning.

Streaks or Stains

Look for spots or stains on the surface of the panels, especially after rainfall or bird activity. These marks can indicate the presence of pollutants or organic matter hindering their performance.

Hotspots on the Panels

Use caution while conducting this check. On a sunny day, gently touch the surface of each panel. If you feel scorching spots, it might indicate dust accumulation or a faulty panel. Consult a professional for assistance.

Nearby Construction or Pollution

If you live in an area with ongoing construction, high air pollution, or are surrounded by trees shedding leaves, it’s more likely that your panels will require frequent cleaning to counteract the effects of these external factors.

What Is the Best Technique to Clean Solar Panels?

Now that you have learned how often should solar panels be cleaned, it’s time to learn the best techniques. Experts advise hiring a professional to clean your panels. But if you want to do it yourself, the first and most crucial step is to ensure you’re using the proper safety gear.

A mixture of water and mild soap or a cleaning solution made especially for photovoltaic panels work best for cleaning.

  • We’ve also put together a helpful how-to guide to help you through the procedure:
  • Use water to rinse the panels to get rid of any loose dirt or debris.
  • Combine water and a bar of mild soap, like dish soap, for cleaning, or use a product designed specifically for cleaning solar panels.
  • Scrub any tenacious dirt or debris away using a soft-bristled brush.
  • To remove all cleaning agents and soap residue, give the panels a thorough water rinse.
  • The panels can be dried using a fresh, soft cloth.

What Is a Mistake to Avoid Making When Cleaning Solar Panels?

Avoiding specific cleaning methods that could harm solar panels or lower their efficiency is crucial when dealing with them:

Avoid Using Harsh Chemicals or Materials

The ability of the panels to collect sunlight and produce electricity might be hampered by scratches or other damage. Avoid harsh chemicals and abrasive products that could harm the panels, such as wire brushes or scouring pads.

Don’t Walk on the Panels

Avoid walking on the panels because doing so could harm them physically, decrease their effectiveness, and risk the manufacturer’s warranty.

Don’t Clean the Panels on a Sunny Day

A sunny day is not the best time to clean the panels since the solution evaporates too rapidly and evaporate too quickly and streaks or residue. On an overcast or shaded day, clean the panels.

Avoid Using Gurneys or High-Pressure Hoses

High-pressure water can harm panels and their seals, decreasing their effectiveness and possibly resulting in water damage to electrical components.


Solar panels have emerged as a popular choice with numerous advantages. Adopting a comprehensive guide on “how often do you need to clean solar panels” not only can we maximize their energy production and efficiency. Moreover, we can extend our solar systems’ life beyond 25 years.

Regular cleaning and proper care become crucial in ensuring optimal performance and longevity. Embracing clean energy through solar panels and maintaining them properly will contribute to a greener future and a more sustainable planet for future generations.

We hope you enjoyed reading our blog! Feel free to explore more of our blogs and share this valuable information with your loved ones.


Can I clean my solar panels during the winter season?

Yes, you can clean your solar panels during the winter season. While snow accumulation should be left to melt naturally, you can safely remove dirt, dust, and debris to maintain their efficiency.

What are the risks of not cleaning my solar panels regularly?

The risks of not cleaning your solar panels regularly include reduced energy production due to dirt and debris buildup, potential hotspots that can damage the panels, and a shorter lifespan for your solar system overall.

Will rainwater be sufficient to clean my solar panels, or do I need to clean them manually?

While rainwater can help clean solar panels by washing away light dirt and dust, it may not be sufficient to clean them thoroughly. Manual cleaning using appropriate techniques and tools is recommended for optimal maintenance and performance.

Will my solar panels lose efficiency if I don’t clean them regularly?

Yes, solar panels can lose efficiency if they are not cleaned regularly. Dirt, dust, and debris accumulation on the panel surface can block sunlight, reducing the energy it can generate. Regular cleaning helps maintain their performance and ensures maximum energy production.


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