An influential government advisory body has endorsed proposals for a tidal barrage across the Severn estuary.The Sustainable Development Commission (SDC) says the project should meet "tough" environmental conditions and remain in public ownership.
Last week the government announced an inquiry into the Severn scheme, which is opposed by a number of green groups.
The SDC, chaired by Jonathon Porritt, says the UK could get at least 10% of its electricity from tidal power.
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