France-based naval submarine and nuclear technology group DCNS has invested €14m ($19m) for 8% of Ireland-based tidal energy developer Openhydro.

During the past year the two companies worked together to install four turbines off the French coast and create the world’s first grid-connected tidal farm for local utility Électricité de France (EDF).

Frédéric Le Lidec, director of DCNS’ Marine Renewable Energy Incubator, said: "DCNS will support OpenHydro to promote and construct tidal turbine farms by making available technical and…