Opinion on solar panels

Hey everyone! I'm not sure if this is the best topic to look for an answer but does anyone have solar panel system? My aunt is planning to get solar panels in Minnesota. Is solar panels actually good investment? What are some good advices for getting solar panels? What are the dos and donts? Any useful information about the solar panel system brands or where to lease or purchase? I would really appreciate any information on the solar panels I might have missed while doing this solar panels research. Thanks in advance for your opinion!