How to Properly Maintain Solar Panels and What Happens if You Don't?

Solar panels are increasingly popular, particularly in residential areas, where they are becoming a staple in modern homes. Their popularity is driven by both environmental benefits and low upkeep demands. Despite their robustness, solar panels need occasional cleaning. The buildup of dust, grime, and precipitation can decrease their performance. Let's explore how to clean solar panels correctly and the potential outcomes if neglected.

How to Clean Solar Panels?

Installed in various climates, solar panels face multiple contaminants—from dust and sand in dry regions to leaves, pollution, and birds in city areas. Cleaning them is a straightforward yet essential task that can be done with everyday household items.

For effective cleaning, consider using:

• A soft sponge or brush with an extended handle to safely remove dirt without harming the surface.

• A mild soap solution - effective against buildup and tough stains.

• Running water is the simplest way to clear away dust, though it's insufficient for more significant dirt.

• Microfiber cloths – prevent streaks and restore clarity.

It's crucial not to use abrasive sponges, hard brushes, harsh chemicals, or steam cleaners, as these can damage the panels and reduce their efficiency.

Safety When Cleaning Solar Panels

Since panels are often mounted on rooftops, cleaning demands caution. Before starting, ensure to:

• Use a sturdy ladder and a safety harness if needed.

• Avoid stepping on the panels to prevent any damage.

• If feasible, use a long-handled mop or a hose with a spray nozzle.

• Clean during early morning or late afternoon to avoid overheating and streaks.

If the roof is complex or access is challenging, it's wise to hire professionals for safe and efficient cleaning.

How Often Should Solar Panels Be Cleaned?

Panels should be cleaned at least once or twice annually, especially in spring and fall. However, the necessary frequency may depend on the surrounding environment:

• In dusty areas (e.g., near fields or roads), panels accumulate dirt more quickly and need frequent cleaning.

• In urban areas with significant smog and rain, buildup happens faster.

• In regions with regular rain, panels might be naturally cleaned, but it's still important to check their condition.

What Happens if You Don't Clean Your Solar Panels?

Dirt, leaves, and debris block sunlight, decreasing the panels' efficiency. On average, dirty panels might lose 15 to 20% of their efficiency annually. Over time, this leads to:

• Lower energy production and higher electricity bills.

• Panel overheating due to uneven sunlight distribution, shortening their lifespan.

• Surface damage, as sand and particles can create tiny scratches.

Therefore, regular cleaning not only keeps panels running at peak performance but also extends their lifespan.

How Much Does It Cost to Recycle Solar Panels?

Recycling a solar module typically costs between 10 and 12 euros. However, for homeowners, this expense is usually manageable as many countries provide recycling programs to dispose of panels cost-effectively. The bigger financial concern stems from efficiency loss due to poor maintenance. Dirty panels degrade faster, leading to extra costs for repair or replacement.

While modern technology offers more resilient solar modules, they still need proper care. Regular cleaning and upkeep ensure maximum efficiency, lower energy expenses, and prolong the system's life.