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Significant social and economic benefits of investment in hydropower projects , and general investment is huge , long duration , complex technologies , construction methods and constraints more involved in all aspects of planning, design , construction , supervision , the impact of the construction and economic benefits uncertain many factors , these factors are often influenced by the objective conditions of political, technical , economic , social , natural , and many have a lot of unpredictability and randomness , there is greater risk of investment in hydropower projects . Therefore, in order to improve the benefits of the project , the investment in hydropower project economic evaluation and risk evaluation index system research has a very important significance . This paper reviews the theory of economic evaluation and risk assessment of investment projects on the development status of China's economic evaluation . Analysis of the characteristics and development status quo of China's hydropower resources and specific investment in hydropower projects , for example , the use of cash flow estimates , the national economic evaluation , financial evaluation method , empirical analysis of China 's investment in hydropower project economic evaluation method , derived The economic internal rate of return indicators are basically feasible . At the same time , the major risk factors for hydropower projects to build a multi-level fuzzy comprehensive evaluation model , and a brief description of the Analytic Hierarchy Process ( AHP) , the basic principles and steps , multi-level fuzzy comprehensive evaluation model , indicators weight value of the four risk levels are classified , classified and the various risk indicators , and ultimately obtained the the hydropower risk of harmony in the middle lower levels . In this study, for investment in hydropower development company to better economic evaluation and risk assessment studies to provide a reference , the theoretical value and practical significance .
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