The industry standard for the lifespan of solar panels is 25-30 years. However, a solar panel won’t die after 25-30 years – rather, its power output will decrease a significant amount below what the manufacturer projected. It’s hard to understand the upfront cost of going solar without knowing how long you can expect your rooftop panels to produce ample energy. Ultimately, your solar panels will offset your electricity use for decades and significantly reduce your energy bills – but to get a sense of when you’ll need to replace your system, it’s important to understand industry projections and degradation rates.
