Solar panels are serious tech, but they’re super easy to clean. With regular cleaning, your solar panels will perform better, last longer, and look great! If your panels are covered in dust, grime, moss and more, these simple steps will help you get them looking like new again! Dirty solar panels can significantly reduce energy output and efficiency, so keeping them clean is crucial. Having your panels cleaned regularly by professionals, especially for hard-to-reach areas, ensures optimal performance and longevity.
6 Tips for cleaner solar panels
- Make sure it’s nice, cool weather
While cleaning solar panels in the hot sun isn’t pleasant, there’s an important reason for this step. If you’ve ever cleaned your car on a scorching hot day, you’ll know why! Because your solar panels are made of glass they get hot easily, expanding slightly with the heat. Once you splash cold water over the top your solar panels will cool rapidly, and if the difference in temperature is too great they’re likely to crack! This same thing happens with car windows and other glass and is especially common in Australia. The best days to clean your solar panels are days with overcast, cloudy weather, or in the cooler summer evenings. Dirt and debris can reduce energy production, so regular cleaning is essential to maintain optimal performance.
- Shut down your solar power system
While your solar panels can handle a bit of water, it’s better to be safe. Completely shutting down your solar panel system will ensure there’s no risk of electrocution and will let you clean your panels without worrying. Your solar panels should shut down from the main switch near your inverter. If you can’t find the shutdown switch, check your manual or contact your installer.
- Make sure your roof is safe to walk on
If you plan on getting up on your roof to clean your panels, you need to make sure it’s safe. Water can make roof tiles or panels incredibly slippery and turn an otherwise sturdy roof into a hazard. Before cleaning, make sure your roof is safe to work on and you have appropriate safety equipment to stop you from falling. If possible, your best option is to clean your solar panels from the ground using a scrubbing pole or by spraying water on them.
- Only Clean the Front of Your Solar Panels
Sure, your solar panels are exposed to the elements 24/7, but that doesn’t mean they’re built to handle water everywhere. Cleaning only the top of your panels (the solar cells) will ensure you don’t accidentally get water in places it’s not supposed to be!
- Scrub With a Cloth and Soap
If there’s still stubborn grime on your panels you can use a cloth and some soap to scrub it off. You don’t need anything special, just remember not to push too hard as it can damage the panels. Following up your soap scrubbing with a rinse and squeegee will leave them sparkling clean! Whatever you do, don’t use a pressure cleaner as this can damage your solar panels. Only in extreme cases of caked-on dirt, mould and moss should you pressure clean, and even then there are better options.
- Still Dirty? Call a Professional!
If you’ve tried and still can’t get all the dirt off, it might be time to call in the professionals! Professional solar panel cleaners carry a range of tools designed to clean solar panels effectively and safely. If you’re not confident cleaning your panels or don’t have the tools or the time, a professional solar panel cleaner can make the job easy.
Why Clean Your Solar Panels?
Over time your solar panels will collect dust and dirt as it flies through the air and settles on them. While rain will clear off a lot of the dust, some will stick and you will eventually need to clean your solar panels. Clean panels can better absorb sunlight, leading to improved efficiency. Regular cleaning can also maximize solar power generation by preventing dirt buildup. Cleaning your solar panels will make them look a lot better and can even increase their efficiency in some cases. If your solar panels haven’t been cleaned in a long time, cleaning the dirt off them can increase their efficiency by up to 30%! Proper maintenance of your solar PV system, including regular cleaning, is essential to ensure optimal performance and longevity.
How Often Should You Be Cleaning Your Solar Panels?
We usually recommend cleaning your solar panels once every 6 months. However, this will depend on where you live, the amount of dust in the air, and what angle your panels are installed at. For areas with a lot of air pollution, you may need to clean your panels more often to maintain peak efficiency. If you’re out in the countryside you may only need to clean your panels once a year or so. And if your panels are installed flat they may pick up more dirt than angled panels and will need cleaning more often.
Hiring a professional cleaner can significantly enhance the efficiency and performance of your solar panels, reduce the risk of damage, and ensure compliance with warranty requirements. For effective maintenance, especially in areas with heavy soiling, we recommend hiring a solar panel cleaning service to avoid potential damage and ensure optimal performance.
We also recommend reading our popular articles: Are Solar Panels worth it? and How do Solar Panels work?
Factors Affecting Cleaning Frequency
The frequency of cleaning solar panels depends on various factors, including location, weather conditions, and panel type. For instance, if your solar panels are installed in a desert region, they may require more frequent cleaning due to the constant buildup of sand and dust. On the other hand, panels in areas with frequent rain or snow might need less frequent cleaning, as the weather naturally helps wash away dirt and debris. Additionally, older, textured panels tend to accumulate more grime and may need more frequent attention, while newer, smooth panels are easier to clean and can go longer between cleanings. By understanding these factors, you can better plan your cleaning schedule to keep your solar panels in top condition.
Benefits of Regular Cleaning
Regular cleaning of solar panels is essential to maintain their efficiency and performance. Dirty solar panels can lose up to 20% of their energy output, which can result in higher energy bills and reduced system efficiency. By cleaning your solar panels regularly, you can ensure that they are able to absorb sunlight effectively, resulting in increased energy production and lower energy bills. Additionally, regular cleaning can help to extend the lifespan of your solar panels by preventing damage from dirt and debris. Keeping your panels clean not only boosts their performance but also ensures that your investment in solar technology continues to pay off for years to come.
Safe Solar Panel Cleaning Practices
When it comes to cleaning solar panels, using safe and gentle practices is crucial to avoid causing any damage. Start with a soft, non-abrasive sponge or cloth and a mild soap or cleaning solution specifically designed for photovoltaic panels. Harsh chemicals and abrasive materials are a big no-no, as they can scratch or corrode the surface of your panels. Instead, opt for a soft-bristled brush or cloth to gently remove dirt and grime. Remember, a little care goes a long way in maintaining the efficiency and longevity of your solar panels.
What Not to Do When Cleaning Solar Panels
There are several things you should avoid when cleaning solar panels to prevent damage. First, steer clear of harsh soaps or chemicals that can be corrosive to the panel surfaces. Rough cleaning instruments, like abrasive sponges or brushes, can scratch the delicate surface of the panels, reducing their efficiency. Never stand on your solar panels, as the weight can cause them to crack or break. Additionally, avoid using high-pressure water jets, which can damage the panels’ surface and internal components. By avoiding these common mistakes, you can ensure your solar panels remain in excellent condition.
DIY Solar Panel Cleaning
If you decide to take on the task of cleaning your solar panels yourself, it’s important to follow some key safety precautions. For single-storey houses, a long-handled, soft-bristled broom can be very effective. Avoid using a pressure hose, as the high pressure can damage the panels. Always keep your feet on the ground when cleaning solar panels, and consider using a safety harness or hard hat to prevent accidents. If your panels are installed on a flat roof with no tilt frame, you may need to hose them down to prevent muddy marks. With the right approach, you can keep your solar panels clean and efficient without professional help.
Professional Solar Panel Cleaning Services
If you’re unsure about how to clean your solar panels or if you’re not comfortable with the process, it’s recommended to hire a professional solar panel cleaning service. Professional cleaners have the necessary equipment and expertise to clean your solar panels safely and effectively. They will use appropriate safety equipment, such as harnesses and ladders, to access your solar panels and clean them using a soft cloth and a cleaning solution specifically designed for solar panels. Professional cleaners will also inspect your solar panels for any damage or issues and provide recommendations for maintenance and repair. By opting for a professional cleaning service, you can ensure that your solar panels are in the best possible condition, maximizing their efficiency and longevity.
Safety Precautions When Cleaning Solar Panels
Safety should always be your top priority when cleaning solar panels. Before you start, make sure to wear appropriate safety gear, such as a safety harness or hard hat, especially if you’re working at heights. It’s also a good idea to check out resources on working safely at heights to ensure you’re well-prepared. Choose a cool day to clean your solar panels to avoid heat-related difficulties, and steer clear of harsh soaps or chemicals that can be corrosive to the panel surfaces. By taking these precautions, you can clean your solar panels effectively while keeping yourself safe.
Inspecting Your Solar Panels Regularly
Inspecting your solar panels regularly is crucial to ensure that they are functioning properly and efficiently. You should inspect your solar panels at least once a year, or more frequently if you live in an area with high levels of pollution or debris. During the inspection, look for any signs of damage, such as cracks or broken glass, and check for any debris or dirt buildup on the surface of the panels. You should also check the connections and wiring to ensure that they are secure and not damaged. If you notice any issues or damage, contact a professional solar panel cleaner or repair service to address the problem. Regular inspections can help you catch potential issues early, ensuring that your solar panels continue to operate at peak performance.
