As you might have read in the SMILEGOV report from Ouessant [https://europeansmallislands.com/wp-content/uploads/2013/01/ouessant.pdf], an underwater turbine was lowered end of September in the mighty passage du Fromveur, second strongest ocean current along the French coast 2 km offshore Ouessant. After a gradual increase in speed from its connection, the tidal turbine has now generated more than 10 MWh of electricity.
This is a big step in the development of marine energy and a giant step for islands having experienced the most negative sides of oil dependency.