How Do You Keep Solar Panels Clear?

Keeping solar panels clear is essential for optimal energy production. The methods used depend on the type of debris and the climate.

Here's a breakdown of how to keep your solar panels clean:

Regular Cleaning Methods

Natural Cleaning (Rain): In many cases, rain can effectively clean solar panels, washing away loose dirt and debris. The angle of most solar panel installations aids in this natural cleaning process.
Hose and Soft Brush: For tougher grime, you can gently spray the panels with a garden hose. If necessary, use a soft-bristled brush with a telescoping handle to reach all areas. Avoid using abrasive cleaners or high-pressure washers, as they can damage the panels.
Professional Cleaning: Consider hiring a professional solar panel cleaning service, especially for large installations or difficult-to-reach panels. They have specialized equipment and knowledge to clean panels safely and effectively.

Soft Broom: A soft-bristled outdoor broom (similar to a roof rake) can be used to carefully sweep snow off the panels. Choose a broom with soft bristles and a telescoping handle. Be gentle to avoid scratching the panel surface.
Sunlight: In many cases, letting the sun naturally melt the snow is the safest and most effective method. Solar panels are often dark, which helps them absorb heat and melt snow more quickly than surrounding surfaces.

Important Considerations:

Safety: Always prioritize safety when cleaning solar panels, especially on rooftops. Use appropriate safety equipment, such as harnesses and non-slip shoes. If you're uncomfortable working at heights, hire a professional.
Timing: Clean solar panels during the cooler parts of the day (morning or evening) to prevent thermal shock, which can occur if cold water is applied to hot panels.
Water Quality: Use clean water, preferably deionized or filtered, to avoid mineral deposits that can reduce panel efficiency.
Warranty: Check your solar panel warranty before cleaning them yourself. Some manufacturers require professional cleaning to maintain the warranty.

Panel Angle: The angle at which your panels are installed can influence how easily debris washes away. Steeper angles generally allow for better self-cleaning.
Location: Consider the surrounding environment. If your panels are near trees, you may need to clean them more frequently to remove leaves and sap.
Regular Inspection: Regularly inspect your panels for any buildup of dirt, debris, or snow. Early detection allows for easier cleaning and prevents significant energy loss.