Photo: SeaGen was installed in the tidal currents of Strangford Lough, Northern Ireland in 2008. However, there is a suite of rival designs racing to harness ocean energy (Image: SeaGen / David Erwin)From New Scientist:
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.
While most wind turbines look much the same, the contest to tap that power is more like wacky races than Formula 1. A suite of varied designs are under development in an attempt to work out the most efficient way to generate juice in the harsh chemical and physical environment of the waves and tides.
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