I used Smart Green Solar and while everyone I worked with was kind (they didn't have a high-pressure sales pitch at all), it was clear that they prioritize sales of new systems over actually fulfilling and completing existing orders (it's been kind of a nightmare getting everything up and running - everything seemed very disorganized and everyone in the call centers is clearly overworked). Beacon Solar did the actual installation on Smart Green's behalf and they were great, though. It might be worth contacting Beacon directly.