Because of depleting energy resources, to increase the reliability as well to reduce the capital expenses innovation has to be made to increase the power output from renewable energy. In order to meet the energy demand in future among the energy sources one of the propitious energy source is solar energy. The energy from the sun is abundant and is radiated on the earth surface in the form of heat and light. Some of the alterable factors which influence the production of electric power from solar energy are PV installation factors namely the angle of incidence of light from the sun, orientation, area of exposure etc. The factors that cannot be altered are ambient temperature, wind movements, solar insolation etc. Since the earth and the sun position differs for the month and season. Due to this PV panel tilt angle as well as absorption of sunlight vary. Thus, the energy generation can be increased by determining the optimum angle for PV panel to collect maximum amount of solar energy to increase the electrical energy generation. Thus, tilt angle decides the PV panel surface area exposed to the solar radiations. If the yearly average fixed tilt angle is used the loss of energy is around 8-10% for each month. In order to increase the efficiency, the tilt angle should be varied. This paper confers about the factors influencing the tilt angle, determination of tilt angle and and also about IoT-Internet of Things integrated smart methodology for varying the value of tilt angle for PV panel to extract maximum energy to make PV more efficient and reliable.