Anyone have experience with having solar panels on their homes? Asking for family member.

An older family member of mine was considering getting solar panels to save on electricity costs and so they could be less reliant on electric companies. It sounds like a good long term investment from what they researched but seems to be unfamiliar ground for alot of the resident homes around Nashville. I was hoping someone who already has solar panels on their homes already can give a bit of experienced info like potentially hidden issues and/or maintenance. I am hoping to avoid strenuous maintenance. Thank you for your time!