I had my panels installed about 5 years ago. Have had no issues at all. During the installation process, they met all dates provided, installation was very non-invasive, the cost was exactly as quoted, they helped with the financing and tax rebate process, and were immediately responsive to any call or question I had. Sunpro assessment of my energy usage and the amount of panels needed was right now. My yearly bill is always close to $0. They monitor the functionality of my panels and when there have been issues caused by my internet connectivity, they come to help resolve a stable connection and ensure that the monitoring is uninterrupted.