Are your solar panels still functioning as effectively as when you first bought them? Solar panel maintenance is key to ensuring that they continue to work efficiently and last for a long time.

But how do you know when it's time to replace them? Here are some signs that you should keep an eye out for.

Decreased Efficiency

If your solar panels aren't producing the same amount of electricity as they used to, this could be a sign that they need replacing. Maybe they only produce a fraction of their original power output, or the output fluctuates even when the sun's out. These are signs that there may be something wrong with the panels, and they might need replacing.

Over time, dust and other particles can build up on the surface of the panels, blocking sunlight from reaching their cells and reducing their efficiency. Depending on where you live, regular cleanings may not be enough to keep this buildup at bay.

Instead, consider investing in newer models with higher levels of dust resistance. These dust-resistant panels have a special coating that prevents dust from accumulating, ensuring higher levels of efficiency.

Physical Damage or Degradation

Solar panels also degrade over time due to exposure to extreme temperatures and inclement weather. For example, if your panels are exposed to hail, strong winds, or heavy snowfall, they may suffer physical damage, such as cracks and water leaks.

Even small amounts of physical damage, like scratches and dents, can significantly reduce the efficiency of your panels, especially if they're exposed to direct sunlight.

If you notice any visible physical damage, such as cracks or chips in the panel's surface, it's probably time for an upgrade. The same applies if there are any discolored spots or streaks on the panel's surface. These indicate that the protective coating is wearing away and needs replacing. If you're unsure, it's best to contact a professional who can inspect the damage and recommend the best course of action.

Old Age

The life expectancy of a solar panel is usually around 25 years, although some manufacturers claim theirs can last longer than this. If your solar panels are getting close to this age marker—or have already surpassed it—it could be worth looking into getting replacements.

New models will likely produce more electricity than your current ones, but they may also come with improved warranties or other features that make them much more cost-effective in the long run.

These features may include improved fire resistance, better efficiency in low light conditions, and higher levels of dust and water resistance. Even if your current panels are still working well, it may be worth considering upgrading them to get the latest features and technologies.  

Contact a local solar panel service to learn more. 

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