At the same time, Mr Bratland wants the power output of each turbine to be raised to perhaps 6MW, and he wants it all to be cheaper than it is today.

BBC: Floating challenge for offshore wind turbine

The 10 megawatts of power that will be generated by the Sound of Islay turbine farm pales into insignificance when compared to the output of a large nuclear or coal power station, which according to American hydro energy non-profit the Ocean Energy Council, can produce up to 100 times as much electricity.

CNN: Tide turns towards undersea energy