How long do solar panels last?

This gradual decline in performance is called the degradation rate. While properly cared for panels can last up to 50 years, the accepted industry estimation of how long solar panels last is 25–30 years. The U.S. Department of Energy cites an estimated operational lifespan of 30–35 years for solar panels but notes that some may last much longer.

Do solar panels stop working after 25 years?

After 25 years, solar panels will be less efficient and produce less power. This doesn’t mean your solar panels will stop working, but they may be less effective at powering your home and lowering your energy savings. When panels degrade to the point where they no longer produce power, they’re ready to be recycled.

How much do solar panels deteriorate a year?

The National Renewable Energy Laboratory (NREL) has been tracking degradation rates for the last several years as part of its Photovoltaic (PV) Lifetime Project. NREL’s findings indicate that solar panels have an average degradation rate of 0.5% per year.

How bad are solar panels?

NREL’s findings indicate that solar panels have an average degradation rate of 0.5% per year. So if your solar panels have been operational for five years, your power generation will be 2.5% lower than your initial output. If we apply this to 20-year-old panels, production drops to 90% of the original output.

Do solar panels expire?

There is technically no expiration date on solar panels. However, over time, they naturally tend to become less efficient at producing energy. Some panels can also break due to physical damage from extreme weather conditions.

Are solar panels durable?

Solar panels are generally very durable. Most solar panels are designed and tested to withstand the elements like hail, high winds, and heavy snow loads. And thanks to their lack of moving parts, solar panel systems usually require little to no maintenance. Still, maintaining your solar panels can boost production.