How to clean a solar panel?

Many cleaning products are too abrasive for solar panels or may leave a residue that blocks sunlight, so you should choose these carefully. Try mixing a mild detergent in water, slowly adding more cleaner if you need more cleaning power. The last step in solar panel cleaning is to dry the glass and review your work.

Do solar PV panels need to be cleaned?

That said, most solar pv panels in the UK will not need any heavy-duty cleaning because regular rain will wash most dirt and grime off the surface, dispelling one of the myths about solar being its difficulty to clean.

How do you clean solar panels without a squeegee?

If you don’t have a squeegee, a microfiber cloth can be used as an alternative. Microfiber cloths are soft, non-abrasive and absorbent, making them ideal for cleaning solar panels. Gently wipe the panels with the cloth to remove any remaining water droplets. Be sure to use a clean and dry cloth to avoid any smudging or streaking.

How often should I clean my solar panels?

We recommend cleaning the solar panels on your garden lights every 2-3 months to maintain their performance. Use a dry or damp cloth to gently wipe any dirt or dust off the panel. Make sure your cloth is only damp – not wet – as you want to avoid water damaging the electronics within the panel.

Can you use vinegar to clean solar panels?

Vinegar is a great cleaning agent for solar panels because it contains acetic acid, which is very capable of breaking down tough stains, dirt and grease. It is also readily available and any vinegar will do although the best type to use is white cleaning vinegar.

How to clean bifacial solar panels?

You can clean the bifacial solar PV modules with a soft cloth or brush. This will remove dirt and debris from the surface of the panels without applying too much pressure to the back. For bifacial module cleaning, it is advisable to have the hydraulic pressure must be below 1500 Pa for the backside of the modules.