§ Mr. David Hunt
The Severn estuary is potentially the largest tidal resource in the United Kingdom and the second largest in the world. The Severn Tidal Power Group has considered two possible barrages in the estuary.
Large tidal schemes are also possible in the bay of Fundy in Canada, and in other sites around the world. The only substantial scheme in operation, however, is at la Rance in Brittany. This is rated at 240 MW and produces about 0.5 TWh of electricity per year.