A frequent question solar panel owners have is whether solar panels need to be cleaned or not? Over time, dirt, dust, and grime can collect on the surface of the panels, affecting how well they generate electricity. Keeping them clean could make a BIG difference in their performance and energy output.
Why Solar Panel Cleaning Matters
Solar panels generate electricity by capturing sunlight, so their efficiency depends on how much light they can absorb. Dirt, debris, and other obstructions can block sunlight and reduce energy production. Keeping them clean is important to get optimal performance.
Impact on Energy Production
The energy loss from dirty panels can vary. Normal debris like dust and leaves may reduce efficiency by only 1-7%. However, in areas with more dust or pollution, this drop in performance can be higher. For instance, solar panels in desert regions could lose up to 40% of their efficiency because of dirt buildup. Regular maintenance can help prevent big losses in energy production.
Factors Affecting Panel Cleanliness
Many factors can cause panels to get dirty fast. The location of the solar panels is one of them. Panels near busy roads, airports, or factories may accumulate more dust and pollutants. The tilt of the panels also plays a role. Panels installed at low angles tend to gather more dirt because rainwater isn’t able to wash it off as easily. In dry climates or areas near trees, panels might require more cleanings to still generate optimal outputs.
Signs Your Panels Need Cleaning
It’s not always easy to tell when your solar panels need cleaning. A noticeable drop in energy production can tell you, but it’s not always obvious when that happens. Taking the time to look at your solar panels can help you spot dirt or debris on the panels. In areas where there’s little rain, you might need to clean the panels more often. If energy production drops by more than 5-10%, it may be time for a cleaning. However, it’s important to weigh the cost of cleaning against the potential energy gains. Sometimes waiting for the rain to naturally clean the panels can be sufficient and cheaper.
DIY Solar Panel Cleaning Methods
Cleaning your solar panels at home can help maintain their productivity, but it’s important to do it the right way.
Tools and Materials Needed
You don’t need much to clean your solar panels. A soft-bristle brush, a garden hose with a spray attachment, and a bucket are the basic tools. For cleaning solutions, plain water is usually enough, but you can use mild soap or a non-abrasive cleaner for tougher dirt. It’s important to stay away from harsh chemicals that could hurt the surface of the panels.
Safety Precautions
Safety is important when cleaning solar panels. If the panels are on your roof, make sure you have a sturdy ladder. It’s best to clean the panels on a cool day to avoid slipping on a hot roof. Never step directly on the panels, or they might break. If the cleaning job seems pretty risky, it’s a good idea to hire a professional to avoid injury or panel damage.
Step-by-Step Cleaning Process
Before you start, turn off the solar panel system to make sure you’re safe. Use the garden hose to spray off loose debris. For tougher grime, use a gentle cleaning solution with a soft brush or sponge, working in small sections. Make sure to rinse each section with water to remove the cleaning solution. When you’re done, dry off the panels to prevent water spots from forming.
Professional Solar Panel Cleaning Services
Solar panel professionals use the right tools and methods to clean the panels without causing damage.
Cost Considerations
The cost of professional solar panel cleaning can vary. On average, homeowners spend around $325 for a full cleaning service, but the price can range from $10 to $20 per panel or $150 to $500 for the entire system. Factors like panel size, the number of panels, roof height, and steepness can all influence the price. The climate & location of your home may also affect how often you need your solar panels cleaned and the cost of that, with some areas requiring more cleanings due to environmental conditions.
Benefits of Professional Cleaning
Dirt, dust and debris can accumulate on your panels and block the sunlight that’s important for them to operate. This reduces their energy output by up to 40 percent in the long term. Dirty panels don’t save you as much money as clean ones. When you hire a professional cleaning service, they use tools to protect your panels from damage, and you get the most out of your investment in renewable energy.
What To Expect
When you hire a professional, they will usually start by inspecting your solar panel system to assess the level of dirt and determine the best cleaning method. The cleaning process generally takes 30 minutes to 3 hours, depending on the size of your system. Professionals use various techniques, including water-fed brushes and even waterless vibration technology. They follow manufacturer guidelines to make sure that the cleaning doesn’t affect your warranty. Most professionals recommend cleaning your panels 1 to 2 times per year, but more cleanings may be needed in areas with high pollution or extreme weather.
Do You Need Solar Panel Cleaning Services?
Cleaning your solar panels is important for maintaining their output and making certain they capture as much sunlight as possible. Whether you choose to do it yourself or hire a professional, regular maintenance will help get you the most energy production and extend the life of your solar panels. By keeping your panels clean, you’ll protect your investment. If you are in need of professional solar panel cleaning services, reach out to Between Cleaning for a free estimate, and we will get your solar panels clean in no time!
