SolarCity will offer its pioneering SolarRoof system later this year. But it is not ignoring conventional rooftop solar panel system customers. Not everyone may want to completely remove a home’s existing roof to install a SolarRoof, but many are put off by the changes in appearance a conventional rooftop solar system causes. SolarCity (now part of Tesla) is keenly aware that appearance matters to homeowners, so it is introducing a newly redesigned rooftop solar system that goes over an existing roof without ruining how a home looks.