Photovoltaic panels after 25 years

This means that after 25 years, a high-quality solar panel system will still capture and convert most sunlight it receives into usable electricity. The panels don't suddenly fail—they become slightly less efficient over time. In fact, most continue generating electricity for many years beyond their warranty period. After a quarter-century of service, typical photovoltaic cells still operate at 80-90% of their original capacity, maintaining impressive efficiency. . With the average solar panel warranty lasting around 25 years, many people are wondering what happens to these panels after they've reached the end of their warranty period. Inverters, which have shorter lifespans than panels, will likely need to be replaced during the system's life. [PDF]