Advantages: Urban lighting projects can not only create a good lighting environment for people's night activities and enrich people's lives, but also have great significance for prospering the economy, developing tourism, and establishing and expressing the image of a region or city. The outline of the city in daylight is determined by the shape, color and shadow of the building edges. The city lights at night clearly outline the outline of the city, which is obviously different from the surrounding area. When you look at the city from a height at night, The contour lines are complete and clear, directly reflecting the shape and scale of the city.
Disadvantages: With the rise and development of urban lighting projects, the power consumption of urban lighting in my country is also rising. It is estimated that urban lighting projects account for about 30 percent of my country's lighting power consumption. In 2006, the power consumption of urban street lamps reached more than 50 billion kWh. However, most of the urban lighting projects are mainly low-efficiency lighting, and the electricity utilization rate is less than 65 percent . The waste of electricity is serious and the energy saving potential is great.
