1背景25年前美国的小水电被私人、市县以及地方政府重新活跃了起来,他们在现有的上万座大坝、以及小河流上利用可再生能源,并在许多输水和供水系统上建立能源回收设施。由于欧佩克在1976年将原油价格从每桶6美元增加到40美元所产生的石油危机激活了水电事业的发展。在这之前,许 1 Background 25 years ago, small hydropower plants in the United States have been reactivated by private, municipal, and local governments. They have used renewable energy sources in the existing tens of thousands of dams and small rivers, and in many water and water supply systems On the establishment of energy recovery facilities. The oil crisis triggered by OPEC’s increase in crude oil prices from $ 6 a barrel to $ 40 a barrel in 1976 boosted the hydropower development. Before that, Xu