How long do solar panels last?

1. Service life of solar panels

The service life of solar panels mainly depends on the material of the sealing layer. There are mainly three types of sealing layers: tempered glass lamination, PET lamination sealing, and glue drop packaging. More than 95% of solar panels on the market are tempered glass lamination packaging. solar panel. The lifespan of tempered glass laminated encapsulated solar panels is 25 years, that of PET laminated encapsulated solar panels is 5 to 8 years, and that of glued encapsulated solar panels is 2 to 3 years.

The service life of solar panels is also determined by the materials of cells, tempered glass, EVA, TPT, etc. With the influence of the environment, the materials of solar panels will age with time. Under normal circumstances, the power will be attenuated by 30% after 20 years of use, and by 70% after 25 years of use. Daily maintenance measures for photovoltaic power generation systems are essential. Generally, the service life of solar panels made by manufacturers who use better materials can reach 25 years.