I discovered Building Energy through Energy Sage's site, and worked with Nik Ponzio on my house's needs for both a new roof and 5-6kW sized solar PV array.
Overall, Building Energy was very professional, knowledgeable, patient and understanding of my needs. They don't use pushy sales tactics, and they took the time to truly understand my current and future electrical needs in order to tailor a practical solution that fit my budget. I was impressed right away by Nik's knowledge of the process, and the fact that he first spoke with me on a Saturday. He came out for a site visit quickly afterwards, and consistently followed my MANY emailed questions. The pricing for the solar install was very competitive and had I been able to afford an all cash transaction, BE would have been my first choice.
In the end, ironically, I actually chose a different competitor, and did not use Building Energy. My choice came down to the financing terms that the competitor had that was exclusive to my particular lender. This is something that is obviously to no fault to BE.
Then why still write a review? Because I was so impressed with BE and with the help I received from Nik, I feel compelled to write something positive about my experience. Based on their work in the Burlington, VT area, I have no doubt that BE is a quality contractor with true professionals of the green building craft.
I'd recommend to anyone to work with Nik Ponzio and his colleagues if you're seriously considering solar and other green building initiatives. As you can see from other reviews, their clients speak highly of them and for good reason. I will keep them in the front of my mind for my future needs.