In Bangladesh, conventional forms of energy are used to generate electricity but at contrast renewable sources of energy should be used because industrialization has caused degradation of environment which affects the consumption of energy sources at great extent. In this paper, a renewable source is proposed named “Photovoltaic power” which will be used to design a system of electricity generation at the rooftop of ahsanullah University of science and technology (Block-b). Design procedures, cost estimation of grid connected to power plant, calculations are described here.