How long will my solar panels last?

The latest solar panel models on the market can have an expected lifespan of as long as 40 years (or more), and warranties that will keep them protected for about half of that time. Your solar panels also come with a performance warranty that guarantees the performance will not drop below 84.8% in the first 25 years. In actuality, the performance after 25 years will often be higher than the guarantee. Some panels have been known to remain over 80% efficient well past 30 years of life. And because electrical appliances continue to increase in efficiency over time, your PV array will likely continue to meet your household’s energy demands throughout its useful life, even with some degradation in performance.