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How often should I clean my solar panels at sea?

April 6, 2026

Quick Answer

Clean your solar panels at sea every 6-12 months, or as needed to maintain performance, using a soft-bristled brush and mild soap solution to avoid damaging the panels.

Marine Solar Panel Maintenance

Regular cleaning of marine solar panels is crucial to maintain their efficiency and extend their lifespan. Saltwater and marine environments can be particularly harsh on solar panels, causing corrosion and reducing their performance. To clean your solar panels, start by inspecting them for any debris, dirt, or grime buildup. Use a soft-bristled brush to gently sweep away any loose particles, working from the top of the panel down to the bottom.

Cleaning Techniques

To clean your solar panels, mix a solution of 1 part mild soap (such as diluted dish soap) to 10 parts water. Dip a soft-bristled brush into the solution and wring it out thoroughly to avoid drips or water spots. Gently scrub the panels, working in small sections to avoid missing any spots. Be sure to clean the edges and frame of the panels as well, as these areas can accumulate debris and corrosion.

Special Considerations for Flexible Panels

Flexible solar panels, often used in marine applications, require special care when cleaning. Avoid using high-pressure washes or abrasive cleaners, as these can damage the flexible material. Instead, use a soft-bristled brush and the soap solution described above. Additionally, be mindful of the charge controller and electrical connections, as these can be damaged by water or debris. Always turn off the solar system and ensure the panels are dry before cleaning to avoid any electrical shock or damage.

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