What Is the Lifespan of a Solar Panel (and How Does It Work)?
A solar panel’s lifespan typically ranges from 25 to 30 years, though many modules continue generating electricity well beyond three decades with gradually diminishing output. This durability stems from the solid-state nature of photovoltaic technology, which has no moving parts to wear out, but performance does decline at an average rate of 0.5% to 0.8% annually due to material degradation from UV exposure, thermal cycling, and environmental stress.
Understanding solar panel longevity matters because these modules represent the largest upfront cost in a photovoltaic system and directly determine return on investment. A …