REC Group announced that its photovoltaic (PV) panels power the largest commercial rooftop solar system in the midwestern U.S. The recently commissioned 3.18-megawatt (MW) Rockville Solar II project in Indianapolis features 12,264 260-watt REC Peak Energy Series PV panels. The system is capable of generating 4.292 million kilowatt-hours of electricity annually, which is enough to power nearly 400 average U.S. households for a year and offset the equivalent of 2,722 metric tons of carbon dioxide...