How long is the warranty on solar panels? IT Support January 11, 2021 06:11 Updated Many people ask: How long is the warranty for the panels we sell? And regardless of the kind of panel, the warranty is going to be 25 years. Read more on the different warranties we offer here. Related articles What happens after my solar is installed? How do I clean my solar panels? What happens to my solar If I move? Do I need to maintain my solar panels? Does Semper Solaris perform or bid roof repairs? Comments 0 comments Please sign in to leave a comment.