How long do solar panels last?

Solar panels have an average lifespan of 25 to 30 years. After this period, the panels only generate 90% of their total power. That's because a panel generates a little bit less each year. We call this degradation. That's why manufacturers provide a performance warranty of up to 25 or 30 years.

The quality of solar panels and how you maintain them also says something about their lifespan. Some panels are more resistant to extreme weather, which means they degrade less quickly. This way, a solar panel lasts longer. You don't have to clean your solar roof. Are the panels very dirty due to algae or Sahara sand, for example? Hire a professional company o safely clean your solar roof.

An inverter converts direct current into alternating current for your household appliances. This makes it an important part of your solar roof. Such an inverter has a shorter lifespan than your solar panels. You usually have to replace these after 10 to 15 years. Micro inverters last about 25 years.

In addition to an installation warranty, your solar roof has a product and performance warranty. Is something broken or is a solar panel generating less than expected? This is covered by your warranty, so you won't have to pay any additional unexpected costs. The warranty period you get varies per supplier or manufacturer. At Coolblue Energy, you get up to 25 years of product warranty and up to 92% performance warranty after 25 years.