Seven Approaches to Ocean Power Generation

There are a number of competing approaches to harnassing the energy-generating power of the ocean and tidal waters. (Image: AWS Ocean Energy)

Colin Barras for New Scientist reports:

"Dedicated research into renewable energy at sea truly began during the oil crisis of the 1970s. But progress towards harnessing the estimated 1 million gigawatt-hours of globally available ocean power has been slow, according to the World Energy Council. A bout of gawky prototypes have taken to the water for the first time in recent weeks, signalling a new assault on a decades-old problem: how to generate power from the oceans." See slides of seven diferent approaches.