Nowadays conservation of energy is an essential part of day and day by day energy resource are getting reduced so our generation may face a lot of problem due to this lack of resource. In order to save energy, we have automated the street light which helps cities to save energy, cost and maintenance. The project aims to describe a method for modifying street light illumination by using sensors at minimum electrical energy consumption. When presence is detected, all surrounding street lights glow at their brightest mode, else they stay in the dim mode. LED bulbs shall be implemented as they are better than conventional incandescent bulbs in every way. This shall reduce heat emissions, power consumption, maintenance and replacement costs and carbon dioxide emissions. Also, a demonstration with a real-time prototype model involving costs and implementation procedure has been developed using the internet of things (IoT) to visualize the real-time updates of street processing and notifying changes to occur. The street light will obtain power from the solar panel. During the rainy season, it gets power from the government supply.