据日本有关机构统计,世界可开发的水力资源每年可发电13.9万亿千瓦时。但现在已开发利用的只有2.47万亿千瓦时,不足全部资源的五分之一,进一步开发水力资源大有可为。世界水力资源中,北美开发率是高,近60％,欧洲为50％。经合组织拥有的水电资源为2.18万亿千瓦时,已开发1.19万亿千瓦时,占54.5％。而 According to the statistics of the relevant agencies in Japan, the world’s hydropower resources that can be exploited can generate 13.9 trillion kilowatt-hours of electricity each year. However, only 2.47 trillion kwh has been developed and utilized, which is less than one fifth of the total resources and there is a great potential for further development of hydropower resources. Among the world’s hydraulic resources, the development rate in North America is high, nearly 60% and in Europe 50%. The OECD has hydropower resources of 2.18 trillion kwh and has developed 1.19 trillion kwh, accounting for 54.5%. and