Electricity from the pilot schemes, which are expected to have acombined output of 80MW, will be bought by utility EDF at €173 ($234) per MWh.

"If our projections are correct, there could be, in the nextdecade, 3GW installed off our coasts. It represents three [nuclear] reactors.That goes to show the potential of tidal energy,” said Hollande, kicking offthe tender in the Normandy port of Cherbourg, which is being positioned as a hub formanufacturers in the tidal and offshore wind sectors.

Engineering