How long do solar panels last?

Solar panel batteries are designed to last for many years, with some manufacturers offering warranties of up to 20 -25 years. No specific dates can be placed on a solar panel’s useful lifespan.

But there are some certain factors that affect the range of solar panel battery. In the next paragraphs, we’ll talk more about this.

What are the degradation rate of solar panel?

Research shows that after 20 years of operation, a solar panel will still be producing at 90% of their capacity. Because the annual deterioration rate of most panels on the market today is 0.5%.

This indicates that the solar panel may still be producing 90% of electricity at the age of 20, compared to a brand new solar battery lifespan

Factors that affect the lifespan of solar panels

1. UV Rays

UV rays can cause physical damage to the solar panel, degrading the material and making it less effective at converting sunlight into energy. Additionally, UV rays can also cause problems with the electrical connections in the solar panel, which can lead to shorts and other issues.

 Approximately 5% of solar terrestrial radiation is UVR. While solar panels are designed to withstand some degree of UV exposure, it’s important to take steps to protect them from excessive sun exposure. 

This can include installing them in a shady spot or using a cover or tarp when they’re not in use. By taking these precautions, you can help extend the lifespan of your solar panel and get the most out of your investment.

2. Temperature

High temperatures can cause solar panels to degrade more quickly, while lower temperatures can actually improve their efficiency. Between 15°C to 35°C solar panel perform at it’s peak efficiency. 

If the temperature is below 15 C, the panel will produce less electricity. If it s above 35 C, the efficiency will decrease and could cause permanent damage to the panel.

3.Salt Air

It’s no secret that salt air is tough on just about everything, from buildings to cars. 

But did you know that it can also take a toll on solar panels? 

Salt air can cause corrosion and other damage to solar panels, which can shorten their lifespan. 

Here’s what you need to know about how salt air affects solar panels and what you can do to protect your investment.

Salt air is especially hard on solar panels because of the way it interacts with the materials used in these devices. Salt water contains chloride ions, which are highly reactive. 

When chloride ions come into contact with metal surfaces, they cause corrosion. This process accelerates in the presence of oxygen, making salt water a particularly effective rust-inducing agent.

Solar panels are made with metal frames and electrical components, so they’re vulnerable to the effects of corrosion.

4. Quality

As the solar industry continues to grow, so does the demand for higher quality solar panels.

But how does quality affect the lifespan of solar panels?

Solar panels are designed to withstand the elements and provide years of trouble-free service. However, lower quality solar panels may not be as durable and can degrade faster, resulting in a shorter lifespan.

In addition to affecting the longevity of your solar panel system, lower quality materials can also lead to decreased efficiency. This means that over time, your system will produce less power, which could lead to higher energy bills.

To get the most out of your investment, it’s important to choose solar panels that are made with high-quality materials and backed by a manufacturer’s warranty. 

By doing so, you can be confident that your system will perform at its best for many years to come.

5. Maintenance

Solar panels are a big investment and it is important to take care of them so they will last. Regular maintenance will help to ensure that your solar panels have a long lifespan.

By keeping your panels clean and free of debris, you will allow them to work more efficiently.

Additionally, checking the wiring and connections on a regular basis will help to prevent any damage that could occur from weather or other factors. By taking these simple steps, you can help to prolong the life of your solar panels and get the most out of your investment


Solar panels are a great investment for your home. They will provide you with clean energy that is not only good for the earth, but also saves you money in the long run. Overall proper maintenance & good quality solar panels affect the range of lifespan.