Industry sources suggest the contenders may be Atlantis Resources, International Power, Voith Hydro Ocean Current Technologies and Smulders. Earlier specualtion that Marine Current Turbines was also in the bidding are now thought to be incorrect.

Inner Sound, off the coast of northern Scotland, is one of the most energetic tidal areas in the Pentland Firth, with potential for a commercial project of 200MW or more.

Inner