The world's largest electricity generating tidalbarrage may be built across Britain's Severn estuary by the end of the century.
在本世纪末世界上最大的发电拦潮大坝可能在横贯英国的塞文河口建立起来。
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Meanwhile advocates of a tidal lagoon system rather than a tidalbarrage in the Severn estuary continue to make their case - Severn barrage: Row breaks out over UK's biggest renewables project.
A few tidal projects, such as the 42-year-old barrage at rance in France, operate like traditional hydro schemes, in which tidal water simply rushes through turbines.