"The global tidal range energy potential is estimated to be about 200 TWh/y, about 1 TW being available at comparable shallow waters. Within the European Union, France and the UK have
sufficiently high tidal ranges of over 10 metres. Beyond the EU, Canada, the CIS, Argentina, Western Australia and Korea have potentially interesting sites. At present 3 tidal barrages operate as
commercial power plants, amounting to a worldwide total of 260 MW of installed capacity."
Le bassin se rempli quand la mer est haute, et se vide quand la mer est basse, entrainant des turbines...
Peter Ullman, Chairman and CEO of Tidal Electric, estimates that 8% of the UK's electricity could be met from tidal lagoons.
Le barrage de la Rance:
Projet de barrage Severn: