I found Go Green Solar on the web. Impressed with the amount of documentation and video's about their products. When I called to inquire regarding purchasing a system, I spoke with Steve Ferris. I called Steve several times with questions before purchasing and he was very pleasant to speak with each time without pressure to buy. I also spoke with Carl, Dave, and Jazzmin, all of whom were also very pleasant and helpful. We are building a new home and living in an apartment with no place to store the panels. I only wanted the Inverter shipped to me so my electrician had it available to wire while wiring the rest of the home. I was told they normally ship everything at once, but shipped me just the Inverter anyway. The panels and racking will not be installed until next year when construction is complete. I can't comment at this time on permitting and engineering support but hope to receive excellent service from Go Green Solar when the time comes.