I think community solar gardens beat rooftop panels for most people
After helping my sister set up a rooftop system in Phoenix last year and then joining a community solar garden near Tucson, I have to say the garden wins. My sister spent $18,000 on her panels and inverter, and she still has to clean them and deal with shade from her neighbor's tree. My community garden cost me nothing upfront and I get credits on my electric bill every month. The garden also uses tracking mounts that follow the sun, so they produce about 25 percent more power than a fixed roof system. Has anyone else compared the two approaches and come to a different conclusion?