The Lifespan of Solar Panels: How Long Can They Really Last?

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Solar panels are an investment in clean and renewable energy, but you may be wondering how long your solar panels can actually last. In this blog post, we will touch on key factors that can determine the lifespan of solar panels and provide some knowledge from our many years of experience into the durability of solar panels.

Quality of Materials

The quality of materials used to manufacture your solar panels significantly determines their lifespan. High-quality solar panels are made with durable materials that can withstand various weather conditions and other environmental factors. When choosing solar panels, choose reputable manufacturers that are known for their quality craftsmanship.

We have a separate post on some of the world’s leading manufacturers. Read it here.


Solar panels often come with manufacturer warranties that can give you some peace of mind regarding how long they may last. These warranties typically cover defects, power output, and guarantee a certain level of performance over a specified period. Common warranties include 25 years for power output and 10-12 years for product defects.

However, because most of these manufacturers don’t have offices in Nigeria, you need to confirm from your installer that these warrantees are still valid and make sure you get a certificate for it or at least let them state in on your receipt.

Degradation Rate

Over time, solar panels experience a gradual decrease in power output due to something we in the industry call degradation. The degradation rate indicates how much power output is lost every year. High-quality panels have lower degradation rates, meaning they maintain their performance levels for longer periods.


Proper maintenance and regular cleaning of solar panels can help to make them last longer. By keeping the panels free from dirt, debris, and sunshade you can ensure effective sunlight absorption. Check the manufacturer’s guidelines for advice on how to maintain your solar panels. On the other hand, you may consider professional cleaning services if needed.

Environmental Factors

The environment in which solar panels are installed also affects their lifespan. Extreme temperatures, humidity, and exposure to harsh weather conditions can impact performance over time. Ensure proper installation and consider factors such as ventilation, panel tilt, and shading to minimize environmental stress on the panels.

Technological Advancements

Solar technology is forever evolving, with advancements in panel efficiency and durability. Compared to older models, newer panels often have higher efficiencies and improved durability—so if you’re buying fairly-used panels, you may be buying older models with lower efficiency and durability. Upgrading to newer panels can extend the lifespan of your solar system and maximize energy generation.


Solar panels are designed to be durable and long-lasting, providing clean energy for many, many years. While the lifespan of solar panels may vary, high-quality panels can last 25 years or more.

Investing in reputable brands, following maintenance guidelines, and getting the latest information about newest technologies can help you maintain a long lifespan and high performance for your solar panels.

Keep enjoying the long-term sustainability and cost savings it offers.

Ire o!

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