Energy crisis and global climate change and other issues come heavily than expected. At first, resource saving and the concept of using green energy were popular just in a small minority of people who are environment protector, but now environmental protection is the responsibility of all of us. Easier said than done, low-carbon green theme is popular in recent years, the majority of people could accept the idea, but lots of problems ensued in practice.

LED is cold light source. For itself, the semiconductor lighting is pollution-free, and the electricity saving efficiency is more than 70% than incandescent lamps and fluorescent lamps. The data shows that LED power consumption is only 10% of ordinary incandescent lamp and 50% of fluorescent tubes in the same brightness. Our annual electricity savings equivalent to the total generating capacity of Three Gorges power station if we replace 50% traditional lighting to LED lighting, the energy efficiency is very impressive.

Guangdong Province, Foshan began large-scale street reconstruction since December 2008, 12 500 high-pressure sodium lamp was replaced by 11 000 LED lamp in more than 300 km of roads. And its transformation method is EMC (Energy Management Contract), which is bank makes the payment at first, and then the government amortizes the money from the saved electricity. It was revealed that LED outdoor street light reconstruction project application was very successful under the EMC mode. Because of that, most of domestic cities are beginning to use EMC mode on street light reconstruction project.

"The Seller installs LED lights for users freely, the bank makes the payment for users at first, and then the users amortize the money by the saved electric charge from the next few years” ——EMC mode, which from the west, plays an important role on the street reconstruction project.