The world's largest verticial rooftop PV system so far has been installed on the Norwegian national football stadium.
The 284.4 kW system composed with 1,242 vertical solar panel units of 200 Wp each supplied by Over Easy Solar, a Norway-based vertical rooftop PV system specialist. Over Easy Solar's XM-2 Quattro-200S vertical panels with silicon heterojunction cells and a module architecture that reportedly offers a bifaciality of 95.7%. The panels are also claimed to be low-weight, adding less than 11 kg/m2.
In this installation, the solar panels are oriented 20 degrees east of south, with special Solar Mounting System, providing an energy distribution with higher energy yield in winter months. Over Easy Solar says analysis from its pilot projects found vertical solar panels can achieve more than 20% to 30% higher specific yield than traditional flat roof solutions. The vertical panels also yield increased performance during winter due to less snow coverage.
