Quantum Solar Designs

Do not recommend. QSD designed our system against manufacturer recommendations by using significantly undersized microinverters (Enphase IQ7 vs. IQ7Plus). This results in a significantly decreased energy output estimated at 750MWh annually by Enphase in turn resulting in a significantly decreased value of the system. The decreased output is mentioned nowhere in the contract or any other documentation. Nameplate system size in the contract: 3.4kW. Actual peak output due to undersized microinveters: 2.4kW resulting in severe power output clipping and decreased annual production. Refused to do anything about this while producing misleading production estimates after the fact - after installation in May 2020. In addition: did not connect the system to WiFi for reporting. Very slow to respond to requests (phone or email). No estimated production numbers or any other metrics other than the nameplate system size in the contract or any other documentation. Summary: two major failures with a number of smaller ones: (1) did not follow manufacturer recommendations in using radically undersized microinverters; (2) did not disclose any estimated production numbers in the contract or any other documentation. P.S. I was initially ecstatic with QSD given they were highly recommended to us, and the fact that they could actually install a system where several competitors including Tesla, Solar Optimum, LA Solar Group - backed off for various reasons. Yet given the support experience, inexplicable design decisions resulting in very real monetary damage to us, and their multiple attempts to produce misleading production estimates - I can't recommend them.

This contractor was great. They arrived on time every day, were knowledgeable, efficient, friendly, and did flawless work. They started on the day they they said they would be there. They also took exactly the amount of time they predicted. I could not ask for anything more.

This is the way a photovoltaic (PV) installation should go.  Professional personnel.  Can deal with anything that comes up.  With a custom house, I don't want just anyone tramping around on my aluminum roof.   Quantum Solar Designs, Inc. has professional personnel who treat your home like their would their own.  They deliver what they promise, and do it in remarkable time.  Their products (inverters and the modules (panels) ) are state of the art, designed and manufactured in Germany.  (No Chinese knock offs for this project).  
The bottom line is simple:  They did what they promised they would do!
Highly recommend Mr. D. Dennis and his staff.