How long do solar panels last?

Solar panels are an excellent resource for homeowners to save money and reduce their carbon footprint. When considering the switch over to solar panels, questioning how long they’re going to last is a reasonable — and important — question. Many others have asked this question and research has shown that solar panels can last between 25 to 30 years, or sometimes longer. 

This does not mean you’ll need to replace your solar panels after this period of time. After around 25 years, your solar panels will still have the capability of absorbing sunlight, just at a lower rate. 

Solar Panel Degradation rate per year

Solar system degradation rates will vary depending on the brand of your system and the climate of the location they’re installed. You’re looking for lower degradation rates, as lower rates will result in your system producing more energy over the course of its lifetime. 

According to a study conducted by the National Renewable Energy Laboratory (NREL), certain premium panel manufacturers can offer degradation rates as low as .30% per year. Other brands will offer degradation rates of .80%, but you can expect an average degradation rate of .50% on almost any panel. 

Withstanding any manufacturing defects, damage, or breakage, you can expect excellent performance from lower-tiered panels with slightly higher degradation rates. Even with a standard solar panel at .50% degradation, your system would be expected to continue operating at around 88% capacity after 25 years!

How do I make my solar panels last longer?

Solar panel systems, just like cars, require maintenance and cleaning for maximum efficiency and longevity. Especially when factoring in potential damage due to weather, knowing how to make your solar panels last longer can help to increase the longevity of your system.

  1. Work with a solar provider that you trust

Working with a solar provider that you can trust and respect is going to be one of the best ways to ensure that your solar system lasts as long as possible. As one of the highest rated solar companies on the Central Coast for customer service, we pride ourselves on going the extra mile for our customers. Whether it concerns financing solutions, affordable pricing, or creative installation solutions, we work hard to ensure our customers are satisfied and have gained our trust.

  1. Clean off debris and other damaging materials

Keeping your panels clean and clear of leaves, dirt, pollen, dust, bird droppings and falling branches will increase the longevity of your solar system. You can learn more about cleaning your solar panels here.

  1. Regular monitoring and maintenance

Consistent maintenance checks will help to keep your solar system functioning at maximum capacity for a longer period of time. For those interested in getting their solar panels professionally cleaned, local professionals such as ProSolarClean can safely eliminate build-up of dirt and debris without damage to your solar panels. 

A.M. Sun Solar is Here to Help

If you have any more questions or spot something on this list that you need assistance with, feel free to contact us right away. We will be happy to answer your questions or schedule a time to come out and inspect your solar energy system.If you don’t have a solar energy system yet, get your free quote today and see how much you could save!