美国1978年《公用事业管理政策法》规定，装机容量1．5万千瓦以下的水电站称小水电站。前苏联规定，3万千瓦以下的水电站称小水电站。日本规定，1万干瓦以下的水电站积小水电站。联合国工发组织召开的国际小水电第二英会议建议小从电划分采用以下标准：装机1001～12000干瓦为小 The United States in 1978, “Public Utilities Management Policy Law” provides that hydropower installed capacity of 15,000 kilowatts, said the small hydropower station. The former Soviet Union stipulates that hydropower stations below 30,000 kilowatts are called small hydropower stations. Japan provides that less than 10,000 kilowatts of hydropower station Jishou hydropower station. The United Nations UNIDO International Small Hydropower Conference held in the second British proposed a small electricity divided by the following criteria: Installed 1001 ~ 12000 dry tile is small