Abstract:This paper focuses on the cooperation mechanism of energy performance contract project of public institution, selected five typical cases, based on EPC project cooperation process and the existing research, starting from the four core categories of cooperation motivation, partner selection, partnership governance and government participation, using content analysis to analyze the related data and case interview text, to explore the key factors in cooperation between the public institutions and ESCO during the process of EPC project, then, 10 key factors such as project energy consumption and energy use management, policy environment, early participation of ESCO, implementation process coordination, incentive mechanism and relationship governance are concluded. Finally, according to the cooperation characteristics of typical cases and the general experience of mode construction, this paper tries to build a conceptual model of the cooperation mechanism of public institution energy performance contract, so as to provide reference for the problems related to the cooperation of the subject of the contract energy management project of public institutions.