Distributed energy projects are environmental protection and energy conservation projects of low-carbon emissions and energy efficient utilization which are encouraged by the state. It uses natural gas to provide users with cooling, heating, electricity and other energy products through gas power generation and waste-heat utilization technology. This kind of energy supply has the characteristics of high efficiency, environmental protection, security and flexibility, which can greatly improve energy conversion efficiency and reduce energy transmission loss, and its energy utilization efficiency is more than 90%, which is widely used in developed countries.