Alstom, SSE Renewables Announce World’s Largest Ocean Wave Energy Project off the Orkneys

France’s Alstom and Scotland’s SSE Renewables, on Jan. 17, announced the world’s largest ocean wave energy development project to date. The partners’ plan for the Costa Head Wave project calls for floating arrays of AWS Ocean Energy’s AWS-III wave turbines with total clean, renewable electricity-generating capacity as high as 200 megawatts (MW) to be installed in waters ranging from 60-75 meters (198-247.5 feet) deep about 5 kilometers off the coast of Orkney Main Island, according to a joint press release.

It will likely require three or more years of dedicated effort to get to the large-scale deployment stage, however. The Costa Head project will serve as the commercial proving ground for the full-scale, 2.5-MW AWS-III floating wave energy devices and AWS Ocean Energy system. A 1:9-scale prototype underwent testing at Loch Ness in 2010. Full-scale component testing is due to take place this year with support from the WATERS fund administered by Scottish Enterprise, and full-scale prototype testing is planned to take place at the European Marine Energy Centre in 2014.

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Aquamarine Power Breaks Ground on Oyster Wave Energy Farm in Orkney

Aquamarine Power recently announced the first step towards the installation of its second Oyster wave energy generator with the arrival of the ‘Excalibur’ jack-up barge in the Orkney Islands. The operation will see the barge begin to drill piles into the seabed in order to create foundations for the next-generation wave energy device. The new Oyster is the first of ten potential units that are planned for the area, and each Oyster will be capable of producing 300-600 KW of electricity. Once completed, the farm will be able to provide enough energy for 3000 homes.

 

The Oyster will capture energy from waves and convert it into clean, sustainable electricity – in essence, it is a wave-powered pump that pushes high-pressure water to drive a conventional onshore hydro-electric turbine. The innovative device use an on-shore base that is much easier to maintain than standard offshore wave power designs. The system is also capable of operating at shallow depths, making it more consistent than systems that operate far out at sea.

The Oyster is scheduled to be installed off the Orkney Islands at the end of July, when it is transported from Methil to EMEC by barge. Once the Oyster is on the site, it will be fixed to the seabed around 500 metres from shore. This will be followed by a commissioning process which will see the device connected to an onshore hydro-electric generator via sub-sea pipelines.

Speaking about the project, Martin McAdam, Chief Executive Officer of Aquamarine Power said: “The installation of our second full-scale Oyster will be another major milestone for Aquamarine Power. Our team will be working very hard over the next few months to complete the project for sea trials to begin in the autumn. “We have been made to feel very welcome in Orkney since we installed our first Oyster at Billia Croo in 2009. We have worked with more than 30 local firms and spent directly over £2 million in the local economy since we began working in Orkney.

“We believe wave energy offers a very positive future to Orkney and we look forward to continuing to build on those relationships with our second Oyster project.”

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