I've worked with Photon Brothers in Denver, Colorado for my initial 7500 watt solar-panel/inverter installation, and then again to have the panels upgraded to 9848 watts, with a new Tesla inverter. Each time their work was done on-time, with no issues, roof leaks, wiring problems, and with impressive integrity. Recently I had to have my Telsa inverter replaced due to a defect issue; they diagnosed it on-line, ordered it and came out to replace it under their warranty at no charge. Again the work was done with impressive results. I'd highly recommend Photon Brothers for their workmanship and integrity; they've also been around awhile while other companies have gone out of business. I have no regrets for having hired on Photon brothers.