BIPV is an application where solar Photovoltaic modules are integrated into the building structures to produce electrical energy. It is silent, clean in operation, highly reliable and low maintenance. The purpose of the research is to assess BIPV application on the roof top of houses in Shah Alam area. Few samples were selected and important parameters were measured, and analysed to determine which roof form, orientations and PV types that influence the power generations. The average daily power generations range from 11.18kWh/kWp to 29.18kWh/kWp depending on the number of modules, PV type, roof inclination and location.