The panels have an insulation R-value of 30, compared to R-19 in typical home construction. The building also has solar panels, which generate energy needs for the occupants, a system to collect rainwater from the roof, and low-flow plumbing fixtures. The PV array uses 16 panels to produce an estimated 3,745 kilowatt-hours (13,480 MJ) per year.[41] We Are Still In (2018)- Over 3,500 organizations, representative of the United States' economy and society, are showing the world that we stand by the Paris Climate Agreement and are committed to meeting its goals.[42] Tree Campus USA certification- Appalachian State University has received Tree Campus USA certification from the Arbor Day Foundation.