What is the lifespan of a solar panel?

A solar panel typically lasts approximately 30 years. During that time, most systems require little to no maintenance beyond removing leaves or snow and hosing off debris. In general, the life of solar panels depends on the quality of the solar panel technology used, including the photovoltaics (PV), and the quality of the overall installation.
Annually, solar panels lose close to half a percent in overall performance. After 25 years of operation, high-quality solar panels will still be operating at almost 90 percent efficiency. The modules we install on homes and businesses are efficient, lightweight and aesthetically pleasing. More importantly, they're cost effective and extremely efficient. With wiring, mounted panels are flushed to the roof.