This book deals with the elementary concept of solar energy; it's designing, modeling of Photovoltaic system. It discourse an effective means to maximize the solar output power, which is a technique based on optical phenomenon. A brief description is also provided regarding the installation of stand-alone PV system along with the basic instruments for the measurement of solar radiation. The model of Optoelectronic solar PV system basically deals with the optical phenomenon like refraction, total internal reflection and reflection which maximizes the solar radiation and the same has been described using MATLAB.