The government carried out studies on a barrage in the 1970s and 1980s. A revised report was published in 2002, but the government rejected the plans as being too costly and environmentally damaging.
Severn barrage: green giant or white elephant?
A marine barrier from England to Wales is seen as a solution to the UK's energy needs, but rivals say they can do the job at less financial and environmental cost
15 January 2009 23:00 GMT
Updated
25 November 2012 8:48 GMT
By
