When will my solar panels stop working?
Not for a long long time.
But all solar panels will lose a little efficiency over time.
About ½% every year.
So the panel you buy in 2021 will still produce at 90% capacity in 20 years.
Now every once in a while a panel will go bad. And need to be replaced.
It’s rare, but it happens, and most panels carry a 25 year warranty.
A more likely scenario is that an inverter will go bad.
Some inverters will need to be replaced at some point 10-15-20 years down the road... hard to say.
These days, most microinverters come with a 25 year warranty.
Bottom Line...solar systems last for a long long time. You'll need to replace your roof and your AC sooner than parts on your solar array.
But it's important to ask questions and...before you decide on a solar company, look at their warranties and guarantees.
Don’t sign a contract until you know what is covered.
Joe Collins is the owner at CIE Solar Energy, LLC.