Today’s solar panels are built to last a long time, with most modern systems expected to keep producing electricity for up to three decades – and even after that, they don’t suddenly stop working when the warranty expires. Instead, they gradually, and somewhat predictably, produce less electricity as they age.
How long panels last depends on factors like build quality and specifications, how they are installed, and external factors like weather exposure. And, while 25 to 30 years is a solid guideline for the panels themselves, other components – particularly the inverter – may need replacing sooner.
