High rises rule city horizons, yet these huge glass-walled designs can be made more energy effective through the expansion of thermally productive photovoltaic (PV) windows, as per an examination by scientists at the National Renewable Energy Laboratory (NREL). Their discoveries, distributed in the diary One Earth, determine that frame building configurations can yield a design with net-zero or even net-positive energy utilization. "There are assumptions about what an energy-efficient structure looks like, and it usually isn't profoundly coated, and it probably isn't tall," said Spear Wheeler, an NREL researcher who works on integrating PV innovation into windows."We observed that there