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If your solar panels look dusty or dirty, cleaning them may seem like a simple fix. Many people reach for dishwashing detergent without thinking twice.

At SpolarPV, we want to share a small but important tip: not every cleaning product is suitable for solar panels.

Dishwashing Detergent May Reduce Performance

Some common cleaning products are safe for solar panel glass. However, dishwashing detergent can cause problems.

Research from the University of Turku shows that dishwashing liquid can leave residue on the glass surface. This residue can reduce light transmittance. So even if the panel looks clean, it may produce less energy. Also, this thin layer can attract more dust over time. So the panel may get dirty again faster.

SpolarPV Cleaning Tips: Safe and Simple Methods

To keep your solar panels working well, SpolarPV recommends simple and safe cleaning methods.

Use Water First

In most cases, clean water is enough. A gentle rinse can remove dust and loose dirt.

Use Soft Tools

Use a soft cloth, sponge, or brush. This helps avoid scratches on the glass surface.

Choose the Right Cleaner

If dirt is hard to remove, use a cleaner made for solar panels. Avoid strong or unknown cleaning products.

Clean at the Right Time

Clean in the early morning or late afternoon. This helps prevent quick drying marks on hot panels.

Avoid High Pressure

Do not use high-pressure water. It may affect the panel surface or edges. 

SpolarPV Reminder

Cleaning is simple. But the wrong method can reduce performance. So always choose safe cleaning methods. This helps your system stay efficient and stable over time.

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