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The island of Oahu, Hawaii, has become host to ‘PowerBuoy’, a wave p ...

The island of Oahu, Hawaii, has become host to ‘PowerBuoy’, a wave power generation unit (pictured on the cover of the November issue of Energy World) from Ocean Power Technologies (OPT). The machine, installed near Kaneohe Bay is the third PowerBuoy to be deployed by OPT over the past two months at sites in both the Atlantic and Pacific Oceans. The device was launched under OPT’s programme with the US Navy for installation off-shore from the local Marine Corps Base, and will be connected to the island’s power grid. The US Navy has added $300,000 in funding for the extended operation of the PowerBuoy system, which was deployed with the support of Hawaiian diver and workboat subcontractors. The power produced by the device roughly corresponds to that estimated by modelling from OPT. It is being monitored 8,000 km away in New Jersey, with real time-receipt of data via radio link and internet based communications. Before being deployed, the device had to pass an extensive environmental assessment, evaluating potential impacts on the seabed, fish, organisms and mammals, vegetation and sea quality. The PowerBuoy was deemed to have no significant impact on the surrounding environment.
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