Solar panels are a fantastic investment in clean energy, reducing your carbon footprint and lowering electricity costs. However, to maintain optimal efficiency, it’s crucial that they are kept clean. Dirt, debris, and bird droppings can significantly reduce the effectiveness of your solar panels. While cleaning them might seem straightforward, it can be risky and complicated, especially when they’re installed on the roof. Here’s your guide to understanding the cleaning process and why it might be best to rely on professionals.
Solar panels are generally low maintenance, but they do require regular cleaning to ensure they perform at their best. The frequency depends on several factors like your location, the angle of installation, and the local environment. For example, panels in dusty or heavily treed areas may require more frequent cleaning.
Cleaning your panels yourself: steps and precautions
- Safety first. Cleaning rooftop solar panels involves working at heights, which poses a significant risk. Ensure you have a sturdy ladder, use a harness, and never work alone.
- Check the weather. Choose a cool, overcast day to clean your panels. Solar panels can get very hot on sunny days, and cleaning them while they are hot can cause harm to both the cleaner and the panels.
- Shut it down. Before starting, make sure to shut down the system following the manufacturer’s or installer’s instructions to avoid any electrical hazards.
- Use the right equipment. Use a soft brush or a squeegee attached to a long handle, and a hose with a suitable nozzle for gentle spraying. Avoid abrasive materials or harsh detergents, as these can scratch the panels and reduce their efficiency.
- Gentle cleaning. Gently remove any loose debris with the brush first. Then, spray the panels with water to remove dirt. For stubborn grime, use a mild, soapy water solution and rinse thoroughly.
Why consider professional cleaners
While DIY cleaning is possible, there are compelling reasons to consider hiring professional solar panel cleaners:
- Expertise and efficiency: professionals have the right tools and techniques to clean panels efficiently and thoroughly without damaging them.
- Safety: professional cleaners are trained to work at heights and have the necessary safety equipment to prevent accidents.
- Inspection: along with cleaning, professionals can inspect your panels and mounting systems for any potential issues, offering peace of mind that your system is not only clean but also in good working order.
- Warranty preservation: some manufacturers’ warranties specify that panels need to be cleaned professionally, or at least to professional standards, to maintain the warranty.
Need your panels cleaned, checked or maintained? As MCS-certified installers across Dorset, Hampshire and Wiltshire, DES Renewable Energy services and maintains solar systems as well as fitting new ones. Get in touch to arrange a visit, or request a free quote for a new system.