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1998年1月23日,威尔士正式宣布赖尔德附近埃兰山谷的NFFO小水电工程开工,该工程由海德(Hyder)开发,总容量为4200kW,发电量足以满足6200个家庭的用电需求。水能由埃兰和克莱尔文山谷的5个相连的水库中近2亿吨的蓄水提供。埃兰山谷是中威尔士的坎布里亚山脉的一部分,是环境上极其敏感的地区,90%的地方拟作为特种科技利益区(Site of Special Scientific Interest),该地区有5个水库和4座蓄水坝,均建于1900～1950年之间,所有大坝和相关建筑物已被列为历史文物。5个水库都分
On January 23, 1998, Wales formally announced the start-up of the NFFO Small Hydropower Project in the Elland Valley near Ryeard, developed by Hyder with a total capacity of 4,200kW and sufficient capacity to meet the electricity needs of 6,200 households. Water can be supplied by nearly 200 million tons of water in five connected reservoirs in Eland and the Clair Mountains. The Elland Valley is part of the Cumbria Range in Wales and is environmentally sensitive. 90% of the sites are proposed as Site of Special Scientific Interest, with five reservoirs and four Dam, all built between 1900 and 1950, all dams and related buildings have been classified as historical relics. 5 reservoirs are points