Site survey will gather information on orientation of rooftop, inclination angle, roofing material and height of building. Also shading, publicity and security observations will be collected for further analysis. Shading analysis will be conducted by using a year round sun chart to specify exact location of the sun; the surrounding environment will be plot into the sun chart to determine whether there will be shading. Building blueprints will also be use to give more specific details on area and height of rooftops. The information from site survey will be used in site screening.