The analysis and evaluation for system benefit is the main content of distributed energy research. In order to overcome the current shortcomings of the evaluation is not comprehensive

the establishment of an energy utilization rate

energy saving rate

initial investment system annual cost

CO2 and NOx emissions of six indicators

respectively on the system efficiency

economy and environment to evaluate the benefit. On this basis

a comprehensive evaluation model of distributed energy system 3 E based on entropy weight and grey relational analysis is established. The energy

economic and environmental benefits of distributed energy systems in a park in Wuhan are analyzed with the evaluation index. The results show that the distributed energy system is superior to the conventional system in energy and environmental benefits

but the economic benefits need to be further improved.