How to Keep Solar Panels Clean [Expert Guide]

Solar panels are a beacon of innovation as the world shifts towards renewable energy. To get the most out of these energy generators, it is crucial to keep them clean. However, most people are curious about how to keep solar panels clean.

Keep the solar Panel clean by regularly inspecting for debris. Gently clean with soft brushes. Remove bird deterrents from branches and trim branches. Keep away from harsh chemicals and high-pressure cleaning. Make sure performance is monitored for optimum efficiency. When in doubt, hire a professional.

Let’s learn how to keep your solar panels in pristine condition so they continue to provide us with clean, efficient power. Also, I will review simple yet crucial maintenance you can do to prolong their life.

Now, let’s embark on a new adventure!

How To Keep Solar Panels Clean: 13 Essential Tips You Must Know!

how to keep solar panels cleanKeeping them clean is one of the most important aspects of solar panel maintenance. Dirty solar panels can experience a significant reduction in efficiency and output. In fact, regular cleaning not only maximizes your solar system’s performance but also ensures its longevity.

Let’s talk in detail!

1. Regular Cleaning

Solar panels can collect dust and dirt over time, like any other surface. Regularly cleaning them with a soft cloth or sponge and mild soap can help maintain efficiency. Avoid using abrasive materials or cleaning agents that could scratch the panels.

2. Consider the Weather

Keep an eye on the weather conditions in your area, as different climates require different cleaning schedules.

Rainwater can naturally wash off some dirt from solar panels if you live in an area with heavy rainfall, for example. However, more frequent cleanings might be necessary in dry and dusty regions.

3. Safety First

Safety should always be a top priority when cleaning solar panels. Wear appropriate protective gear, such as gloves and safety glasses, before cleaning them yourself. Be sure to follow all manufacturer’s instructions regarding cleaning procedures.

4. Explore Automated Options

There are automated systems designed specifically for solar panel maintenance. They are ideal for those who prefer a hassle-free approach. Unlike humans, these devices do not require humans to clean.

5. Optimize Panel Tilt Angle

Aside from keeping your solar panels clean externally, tilt angle also affects their performance. Regularly clean the surface of your solar panels with a soft brush or squeegee. It will remove any dirt, dust, or debris blocking sunlight from reaching the cells.

6. Self-Cleaning System

Consider installing a self-cleaning system that uses rainwater to clean your solar panels. It can reduce the amount of manual cleaning required and ensure maximum efficiency.

7. Avoid Using Abrasive Materials

Avoid using abrasive materials or harsh chemicals when cleaning your solar panels because this can damage the surface and decrease effectiveness over time. Stick to gentle cleaning solutions and non-abrasive tools for optimal results.

8. Trim the Trees

Trim trees or branches near your solar panel installation site to minimize shade and blockage. It will prevent leaves, bird droppings, or other debris from accumulating on your panels.

9. Check for Physical Damage

Keep an eye out for any physical damage, such as cracks or scratches on the surface of the solar panels. Maintain their longevity and functionality by contacting a professional promptly.

10. Watering System

Installing a watering system can help keep solar panels clean by automatically spraying water on the surface at regular intervals.

Helps to remove any buildup of dust or dirt and maintains optimal performance. A properly installed and maintained watering system prevents leaks and malfunctions.

11. Avoid Shading

It is crucial to keep solar panels free from any obstructions that may cast shadows on them. Shading can significantly reduce their efficiency, as even partial shading can affect the overall output of the solar system. If necessary, trim nearby trees or vegetation that may block sunlight.

12. Professional Cleaning Services

In some cases, it may be best to hire professional cleaning services for more thorough maintenance of solar panels. t For safely cleaning solar panels without damaging them, these professionals use pressure washers and know industry standards.

13. Monitoring Performance Indicators

Check your solar Panel’s performance indicators, such as energy production levels, to see if they need cleaning. A sudden drop in efficiency could signify a buildup of dirt on the surfaces that needs attention.

What Are The Benefits Of Keeping A Clean Solar Panel?

The benefits of keeping solar panels clean include improved efficiency, increased energy output, an extended lifespan etc. It’s important to include this upkeep in your routine so that you can make the most out of your investment in renewable energy.

Let’s have an in-depth discussion on it:

1. Improve Efficiency

Regular maintenance and cleaning solar panels help to improve their efficiency and overall performance. When the panels are covered with dust, dirt, or debris, they cannot absorb as much sunlight as they should. Keeping them clean allows maximum sunlight to enter and generate electricity.

2. Save Energy Bills

Dirty solar panels also lead to reduced energy output. Studies have shown that regularly cleaned solar panels can produce up to 5% more energy than those left uncleaned. It may not sound like a significant increase but over the lifespan of an entire solar panel system. As a result, you can save a great deal of money on your energy bills.

3. Extend Lifespan

Cleaning your solar panels can also help extend their lifespan. Dust and grime accumulating on the panels’ surface over time can cause wear and tear due to increased heat retention. Preventing unnecessary damage and ensuring your investment lasts longer by keeping them clean.

4. Improve ROI

Another benefit of regular maintenance is improved return on investment (ROI). As poorly maintained or dirty solar panels generate less energy, regular cleaning increases energy production and saves money.

According to research by the National Renewable Energy Laboratory (NREL), a clean solar panel system produces around 3% more electricity than a dirty one.

Furthermore, clean panels are less likely to suffer from performance issues or damage caused by overheating. So you can save on repairs and replacements.

5. Environmental Sustainability

Clean solar panels also contribute to environmental sustainability. Solar power is a renewable source of energy that produces zero emissions during operation.

Through regular maintenance, you can maximize the efficiency of your solar system, thereby reducing reliance on fossil fuels.

6. Enhance Aesthetic Appeal

Keeping your solar panels clean can enhance aesthetic appeal. In the future, if you decide to sell your property, dirty or stained roof panels could affect curb appeal and value.

7. Increase Energy Production

Regular maintenance and cleaning of solar panels lead to increased energy production. Studies have shown that dirty solar panels can reduce their efficiency by up to 20%. Dust, dirt, and bird droppings on the surface of the panels block sunlight from reaching the photovoltaic cells, thus decreasing electricity generation.

What You Should Do and What You shouldn’t Do!

Here’s a quick chart outlining what you should do and what you shouldn’t do to keep your solar panels clean:

Quick Chart:

                     DO            DON’T
Regular Inspection: Check for dirt and debris. Avoid High-Pressure: Don’t use high-pressure hoses.
Gentle Cleaning: Use soft brushes or sponges. No Abrasive Tools: Avoid abrasive scrubbing tools.
Use De-ionized Water: Prevent streaking. Avoid Detergents: Don’t use streak-causing agents.
Trim Overhanging Branches: Prevent debris. No Harsh Chemicals: Avoid chemicals that damage.
Install Bird Deterrents: Minimize droppings. Avoid Cleaning Hot Panels: Risk of water damage.
Professional Cleaning: For challenging situations. Neglect Inspection: Regular checks are essential.
Monitor Performance: Track energy output. Delay Cleaning: Regular cleaning ensures efficiency.

 How Do You Clean Solar Panels Naturally?

While many commercial cleaning solutions are available in the market, natural methods can be just as effective, cost-efficient, and environmentally friendly. There are several methods by which you can clean solar Panel naturally:

Use Water and Vinegar

One alternative to chemical cleaners for cleaning solar panels is using a mixture of water and vinegar. Vinegar, a common household item, is known for its effectiveness in removing dirt and grime from various surfaces.

According to a study by SolarServe Pty Ltd., vinegar is an effective natural cleaner for solar panels because it leaves no residue behind and maintains optimal energy production.

Use Mild Soap

Another natural solution for cleaning solar panels is a mild dish soap diluted with water. This mixture can effectively break down and remove dust, pollen, bird droppings, and other debris.

It can accumulate on the surface of the panels. To avoid damaging the Panel’s protective coating, ensure the soap does not contain harsh chemicals or additives.

Use Rainwater

Rainwater can also serve as a natural cleanser for solar panels. Due to its purity, rainwater has lower mineral content than tap water, reducing the chances of mineral stains being left behind after drying. You can use nature’s cleansing process by relying on natural rainfall for your solar panels.

Use Soft Brush

Regular dusting with a soft brush or cloth can help prevent heavy accumulation of dirt on the surface of solar panels. IIt’seasy to reduce the need for frequent deep cleaning by brushing off loose debris.


Another natural method for keeping solar panels clean is through frequent inspections and maintenance.

Regularly checking the panel surfaces for any signs of dirt buildup or damage allows for timely intervention and cleaning if necessary.

Keep your panels in good shape by removing leaves and trimming nearby trees that may shade them.

Solar Panel Cleaner: Right Tools for Efficient Solar Panel Cleaning

Cleaning solar panels is essential for maintaining their performance and longevity. Using the right tools can make this task efficient, effective, and ergonomic.

For optimal solar panel cleaning, here are the tools you need:

Professional High-Pressure Cleaner: A high-pressure cleaner is a powerful tool for removing stubborn dirt and debris from solar panels. Coupled with a brush attachment or roller brush, it can enhance cleaning efficiency. Ensure the high-pressure cleaner operates in low-pressure mode with cold water (700 to 1000 litres per hour).

Short-handled Roller brushes: With roller brushes, high pressure drives them, reducing the force required to operate them. They work independently and are efficient at cleaning. Opt for soft or hard bristles based on surface type. Soft bristles are recommended for gentle photovoltaic system cleaning.

 Brush Attachment with Two Disc Brushes: Opt for a brush attachment featuring two counter-rotating disc brushes with a working width of 800 millimetres. This design minimizes effort and improves cleaning coverage. Brushes should have nylon and harder bristles on the outer edges for thorough frame cleaning.

Lance With Telescopic Extension: Select a telescopic lance of suitable length or one that’s infinitely extendable. Longer lances of lightweight materials like carbon or carbon composite are more manageable. Flexible lances clean vertical facades and large areas with ease.

Variable Lance System: For versatility, consider a variable lance system. It accommodates different attachments such as high-pressure nozzles for spot cleaning, disc brushes for horizontal PV elements, or rotating high-pressure roller brushes for vertical facades and solar panels.

Cleaning Technique: Control water flow via a lance lever while guiding brushes systematically over solar modules. Start with slightly increased water flow to create a sliding layer, facilitating brush movement. A self-adjusting articulated joint compensates for varying working angles.

Efficient solar panel cleaning using these tools and techniques can cover up to 1,500 square meters daily. With the right equipment, you ensure effective solar Panel cleaning without compromising sensitive surfaces, leading to optimal energy production.


Q. What is the Best Way to Keep Solar Panels Clean?

A. Regularly inspect and gently clean with soft brushes, using de-ionized water to prevent streaks. A professional cleaning may be needed for challenging situations.

Q. What Makes Solar Panels Dirty?

A. Accumulated dust, pollen, bird droppings, and environmental particles create dirt on solar panels. In the long run, this will reduce their efficiency by obstructing sunlight absorption.

Q. How do I Keep My Solar Panels Dust Free?

A. Keeping solar panels dust-free requires regular inspection and gentle cleaning. Rinse using de-ionized water to prevent streaking. To prevent dirt accumulation, trim overhanging branches and install bird deterrents.

Q. What is the Cheapest Way to Clean Solar Panels?

A. To clean solar panels cost-effectively, use de-ionized water and soft brushes. The DIY method ensures effective cleaning and optimal energy generation while avoiding the cost of specialized detergents.

Q. What Chemicals are Safe to Clean Solar Panels?

A. Ideally, use de-ionized water to clean solar panels safely and effectively. Avoid detergents that can cause streaking and compromise panel effectiveness. This approach ensures minimal risk to the panel’s performance and longevity.

Partial Thoughts

So, how to keep solar panels clean? Usually, keeping solar panels clean is crucial for maintaining efficiency and maximizing energy production.

Regular cleaning and maintenance can help remove dust, dirt, and debris that can accumulate on the surface of the panels.

Use a soft brush or sponge when cleaning solar panels, and stay away from harsh chemicals, as mentioned in this article.

Furthermore, professional cleaning every few months can provide a thorough inspection and cleaning. So, let’s keep our solar panels clean and well-maintained to reap the full benefits of renewable energy.

Leave a Reply

Your email address will not be published. Required fields are marked *

Back to top button
error: Content is protected !!