I've been researching going solar for 2 years. After contacting the 6 highest rated solar companies that I found on an independent website that rates the top 100 companies in the nation in a variety of fields, I still had no panels for my townhouse.
Four of the companies disqualified me right over the phone while talking to me, due to the size and shape of my roof. One, Blue Raven Solar, at least sent 2 reps over to my house. They never went up to my roof, never took any measurements, never even looked at my circuit breaker box in the basement. The only thing one of them did was take a picture of the large tree in my neighbors back yard, that was a potential sunlight blocker, and tell me what a great and wonderful company they were, and that they'd get back to me. But they never did, not even after I emailed them again right after their visit to my house. They did not even show the professionalism to respond to my email.
Solar city on the other hand did send a real engineer. He looked at my electrical system. He went up on my roof and took measurements and sunlight shade readings. They tried to make a system that would produce 50% of my electric needs. But a few days later they pulled out too, when they couldn't put the minimal 8 panels on my roof, due to NY state laws that require 2 ft of clear roof space along the parameter of your roof for fire fighters. They I cannot say anything against. They simply weren't equipped to outfit a home like mine, but they really did try and kept me informed throughout the whole process.
Then came Leandro Salvatico from SustenCorp. He custom designed a system for my impossible to fit roof that would hold FOURTEEN yes fourteen solar panels. It was innovative and is hardly noticeable when you stand in front of my house. It was a marvelous creation by Leandro.
My electric bills which average around $135 a month, dropped the last 3 months to - $15, $18, and $38. His engineer David Lam who did the entire installation, saw through all the bugs that cropped up. And there were several, but he never stopped till he fixed each one, and I got the great production I'm getting now.
If you have a small or oddly shaped roof, save yourself a lot of time and headaches I had to go through and have SustenCorp come over and custom design a system that will work where other companies won't even try.