Determining the suitable area of a rooftop for PV system installation
Several criteria need to be examined to determine the suitable area of a rooftop for solar PV system installation. These include: surface area, amount of shading, presence of obstructions, and orientation.
Rooftops with suitable surface areas (after taking into account shading, obstructions and PV system perimeter buffer for maintenance work) less than 10 m2 for residential buildings or 100 m2 for industrial/commercial/public buildings were automatically eliminated.
A rooftop is also rejected if its value for “PV Tilted” is less than 50 % of that of “PV Horizontal”. This means that the rooftop has a slope and/or an orientation that make it unsuitable for PV production.