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Page last updated at 07:58 GMT, Monday, 26 January 2009

Tidal barrage cost concerns

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The government will announce a shortlist of proposed schemes to harness renewable energy from the tides of the Severn estuary. Options to build a barrage across the Severn are likely to be among five projects which will be selected from a list of 10 examined over the past six months. Correspondent Wyre Davis reports from the estuary.

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