To demonstrate how much less infrastructure his system requires, Howe uses the example of the Bath County Pumped Storage hydro-electric dam in Virginia, US.
为了证明这个系统无需太多的基础设施，豪举例说明美国佛吉尼亚州巴斯县抽水蓄能水电大坝。
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The U.S. electric system has 2.5 gigawatts of pumpedhydro storage capacity, but most of the good, cheap sites are already occupied, and creating new reservoirs is not environmentally benign.