Simple math shows that a marginal gas or oil well has a power density at least 22 times that of a wind turbine while a nuclear power plant has a power density that is more than 8 times that of a solar photovoltaic facility.

FORBES: Magazine Article

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