Solar GoGo installed my system a Year ago and the system has been good. Ray gave us an estimate that was thousands of dollars less than a previous one we had received from another solar company. The system was installed as scheduled and there were a few follow up checks on the systems performance. We had room for a 20 panel 5K system and we were told to use as much power as we wanted but I think we over did it and at the end of one year when PG&E settled our account and we owed a little over $30