Street lighting provides a safe night environment for all road users including pedestrians. Research indicates that overnight car accidents are significantly reduced by the provision of street lighting. It also helps reduce fears of crime and fosters social inclusion by providing an environment in which people feel they can walk in dark hours. Providing street lighting is one of the most important and costly responsibilities of a city. Lighting can account for 10-38% of the total energy bill in typical cities around the world. Public lighting is a particularly important concern for public authorities in developing countries because of its strategic importance for economic and social stability. Efficient lighting is wasting important financial resources each year and lack of lighting creates unsafe conditions. Energy efficient technologies and design can drastically reduce street lighting costs (often between 25 and 60%). The main consideration in today's field technologies is automation, energy consumption and profitability. Automation aims to reduce the power of man with the help of intelligent systems. Energy saving is the primary consideration forever, as energy sources are being lowered due to several reasons. The main objective of this project is the automatic energy saving system of the street with LDR this is to save energy.