
How is a solar performance guarantee different from a product warranty?
- A product warranty covers the different parts in your system– a typical warranty will say that if anything goes wrong because of a manufacturing defect, you will get a new part. You will also get a service warranty, which covers any issues from installation.
- A performance guarantee looks at the actual power output of your panels. It guarantees not just that the solar panel will work, but that it will perform at a high level. When you get your new solar system, it will come with specs that tell you the minimum peak output of your panels. With a guarantee, you will know that your panels are going to put out a certain percentage of their rated power.
- What performance should I expect from my solar panels?
A strong, reliable home solar system can work for decades through heat, cold, rain, and snow. You want a system that can maximize the amount of power you can produce and minimize the amount of money you spend on electric bills for a lifetime. Performance guarantees will tell you the minimum amount of power you can count on getting from your solar panels. Like a rechargeable battery, solar panels produce slightly less power after you’ve had them for many years, but you’ll always get a specified output. If your panels do not perform, the guarantee will not just replace the part, but will also repay you for any shortfall in power.
How can I monitor the performance of my solar panels?
Part of the fun of having solar panels is watching them pump out power (and save you money). Most systems provide an in-home display to see how your panels are performing. You may also be able to monitor performance online or through a mobile app. Some manufacturers automatically notify dealers if there is any performance issue.




