We had Diamond Renewable Energy install our solar panels in October 2020 - a 12.4kWp system on our roof. We were also having a metal roof installed at the same time which required coordination between contractors. Cole did a fabulous job communicating with the roofer and making life easy for us. The panels were installed on time and the work was top-notch. The customer service was excellent and we have high standards in this area. He was pleasant, professional, and very helpful. He has also been very responsive to questions etc as recently as this past week...nearly 2 years after the job was complete. I have no hesitation recommending them for your solar installation.