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葛洲坝水电厂是目前我国装机容量和年发电量最大的水电厂。到1987年底,全厂已装设18台转桨式水电机组,总容量234万kW。整个工程将于1988年底竣工。届时,全厂将装有21台转桨式水电机组,共271.5万kW。除1号和2号机组单机容量为17万kW以外,其余机组(3号～21号)单机容量均为12.5万kW。载至1987年7月底,已经投产的12台12.5万kW机组都留有较大的发电潜力,据作者初步估计,合理挖掘这部分潜力,每年将可增发电量约9亿kW·h。
Gezhouba Hydropower Plant is currently China’s installed capacity and annual generating capacity of the largest hydropower plant. By the end of 1987, the whole plant had 18 sets of paddle-type hydropower units installed, with a total capacity of 2,340,000 kW. The entire project will be completed by the end of 1988. By then, the whole plant will be equipped with 21 sets of paddle-type hydropower units, a total of 2,715,000 kW. Except Unit 1 and Unit 2 having a stand-alone capacity of 170,000 kW, the stand-alone capacity of the remaining units (No. 3 to No. 21) was 125,000 kW. As of the end of July 1987, 12 units of 125,000 kW that have already been put into operation have great potential for power generation. According to the preliminary estimation made by the author, a reasonable excavation of this part of potential will generate about 900 million kW · h of electricity each year.