Rooftop solar is more compelling than ever, but its real value depends on your home and future plans. Thanks to open energy markets and evolving incentives, solar remains a smart, competitive move for many. Curious about how competition transforms the market?A rooftop solar power system, or rooftop PV system, is a photovoltaic (PV) system that has its electricity -generating solar panels mounted on the rooftop of a residential or commercial building or structure. Solar energy is popular because it offers independence from traditional electricity, reduces utility bills, and allows excess electricity to feed back to the. Nationwide, payback periods for rooftop solar average between 5 and 8 years for most American homes. Disclosure: This post may contain affiliate links. As an Amazon Associate, we earn from qualifying purchases. This comes at no extra cost to you.