Darius Snieckus runs the rule over a revolutionary offshore device.

A prototype of one of potentially the most revolutionary devices yet hatched by the offshore renewables industry is about to be towed into the choppy seas off southeastern Denmark for the next phase of an extensive testing programme.

Part wave-power array, part floating micro-wind farm, Poseidon is a hybrid generation plant that at full scale could churn out more than 50 gigawatt hours of electricity a year.

Poseidon’s