A government minister has cast doubt on whether the proposed Severn barrage should go ahead.
A private consortium wants to build a £25 billion barrage between Weston-super-Mare and Cardiff, though it would require government support.
Hafren Power claims it could generate 5% of the country's energy from the tidal power harnessed.
But today the Energy Minister Greg Barker MP told MPs more work needed to be done to establish the costs and impact it would have on wildlife and the port of Bristol.
More top news
Bristol West MP says pubs in parts of the city have closed as a result of the arrival of Somali immigrants
Our political reporter Bob Constantine gives his view on George Osborne and David Cameron's visit to the West.
Residents living near the Somerset Levels are positive the dredging of 150,000 cubic metres will prevent any serious flooding