1986年召开的第八次世界能源大会指出,对水电技术的兴趣正在降低,尤其在工业发达国家。例如,1986年美国的公司没有一份水轮机组的订货合同,而水轮机的订货申请也很有限。此外,在发达的资本主义国家里,发展水电站涉及到一系列环境保护的问题,因此获得建设许可证就成了实现设计的主要问题。这一时期的特点是对许多现有的水电站 The Eighth World Energy Congress in 1986 pointed out that interest in hydropower technology is declining, especially in industrialized countries. For example, in 1986, a U.S. company did not have a contracting contract for a turbine and a turbine ordered a limited number of orders. In addition, in developed capitalist countries, the development of hydropower stations involves a series of environmental protection issues, so obtaining a construction permit has become a major issue in the design. This period is characterized by the many existing hydropower plants