Risk Research Of Public Utility Project Based On The Model Of Public Private Partnerships

China has being reformed the infrastructure since 1980s, from reforming the modern management system of enterprises that offer public products and service to the pricing system and quality criterion of public products and service; from introducing to the competition mechanism of the market to encouraging private's capital participate in; from the government supplying to supervising; China keeps exploring the best way of the reform of public utilities to improve the quality of public products and the service,and to satisfy masses' demands for public utilities.The model of Public Private Partnerships, that is PPP (Public Private Partnerships) model is the most popular model of public utilities reforming now. Its characteristic is the private department is public service and provider of the products, and the public department is purchaser and supervisor. Its way includes: Operate and Maintain (O&M), The Agreement of Management, Lease Buying, BOO/BOT, Franchise, non- public organization etc.Based on analysing the characteristics of the public utilities project and the mode of Public Private Partnerships (PPP), this paper has analysed the characteristic of the project risk identification of public utilities based on PPP, has identified the project risk factor of public utilities based on PPP, including environmental risk, financial risks, technological risk, market risk, management risk and force majeure risk, however, when realization way of PPP changes, the risk factor faced in cooperation will change;Firstly, by analyzing the advantages and disadvantages of the Analytic Hiberarchy Process, which is the method of project risk assessment, this paper supposed the Analytic Hiberarchy Group Process to assess the project risk of public utilities based on PPP;Secondly, this paper developed a program of AHP in computer language — Delphito examin the consistency of judging matrix, and computed the value of CR.Thirdly, supposed an allocation of risks was supposed after summary the experiences of domestic and international's public utilities project based on PPP. In addition we can through increase project risk managerial ability, merit of project manager, reduce or remit the risk factor too.Finaly, the Changsha sewage disposal project as the using esample to validate the realistic meanings of the research and theory method in this paper.