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Wave Hub successfully deployed on ocean floor

06 September 2010 

The South West RDA’s (Regional Development Agency) pioneering Wave Hub marine energy project has been safely installed on the seabed following a delicate operation to lower the 12-tonne hub into 55 metres of water, 16 kilometres offshore.

Wave Hub is creating the world’s largest test site for wave energy technology by building a grid-connected socket on the seabed off the coast of Cornwall in South West England, to which wave power devices can be connected and their performance evaluated.

The £42 million project has been developed by the South West RDA and is a cornerstone of its strategy to develop a world class marine energy industry in South West England and the UK.

Wave Hub was lowered to the seabed using a crane on board the cable laying ship Nordica and touched down at 15.12 on Friday September 3. Over the last two days the hub’s four 300m ‘tails’ have been positioned on the seabed and later today the vessel Tideway Rollingstone will start to place the first of 80,000 tonnes of rock on top of the 25km cable connecting Wave Hub to the shore to hold it in place.

News of Wave Hub’s successful installation was welcomed by UK Science Minister David Willetts, who said: “It is fantastic news that Wave Hub has now been deployed on the ocean floor – this ground breaking project will strengthen the UK’s position at the forefront of the wave energy sector. The UK is already leading the way, with 25 per cent of the world’s wave and tidal technologies being developed here. This is a huge opportunity for UK business – the sector could be worth £2 billion by 2050 and it has the potential to create up to 16,000 jobs by 2040.”

UK Climate Change Minister Greg Barker also congratulated the Wave Hub team on their achievement, saying: “The UK’s massive marine energy resources have the potential to supply millions of homes with renewable power, giving us security of supply and cutting greenhouse gas emissions. Wave Hub will fulfil a crucial role that complements our existing test facilities in the UK and will help companies bring forward the development of marine energy.”

The RDA’s Wave Hub General Manager Guy Lavender said: “Seeing Wave Hub lowered into the water was the culmination of more than seven years’ hard work by hundreds of people and the fact that it was designed and built in this country is testimony to the skills and experience that the UK already has in the fledgling marine renewables industry.

“Wave Hub will be on the seabed for the next 25 years, helping the world gain invaluable knowledge about how we tap the vast energy potential of our oceans in the pursuit of clean, abundant, renewable energy and cementing the UK’s position at the forefront of this green power revolution.”

Maria McCaffery MBE, chief executive of Renewable UK, the UK’s leading renewable energy association, said: “Wave Hub is a tremendously exciting development, and a truly world-leading project. It will focus global industry attention on the UK and put the South West firmly on the map in terms of marine energy research and development.

“With projects such as Wave Hub, and a solid financial support mechanism, as a country we now have a unique opportunity to strengthen the lead in the sector and start rolling out the next generation of wave and tidal energy devices. These will make reliable and plentiful energy from the sea a reality within the next 10 years.”

Wave Hub is connected to the shore via a 25km, 1,300-tonne subsea cable that has been laid over the last few weeks from the beach at Hayle on the north Cornwall coast out to the Wave Hub site.

With the hub on the seabed, specialist contractor CTC Marine spent the weekend ensuring that the hub’s four 300-metre cable ‘tails’ which serve the four berths at Wave Hub are in the right position, and have surveyed the entire length of the cable.

Wave Hub is being funded with £12.5 million from the South West RDA, £20 million from the European Regional Development Fund Convergence Programme and £9.5 million from the UK government.

ENDS

For more information contact Jason Clark, 01208-77900, jason.clarky@dca-pr.co.uk

Notes to editors:

Images: of Wave Hub being deployed can be viewed here: twitpic.com/photos/wavehub and higher resolution versions are available by emailing jason.clark@dca-pr.co.uk

Film: two short film clips showing Wave Hub being lowered through the water and touching down on the seabed can be viewed here: www.youtube.com/watch?v=I7Ui6aLyeRU and http://www.youtube.com/watch?v=eSLIbq1oIjo%20

You can follow Wave Hub’s progress on Twitter (@wavehub).

The South West RDA works for and promotes a modern, stronger and more resilient economy across South West England. Our work involves creating better jobs, successful businesses, more prosperous cities, towns and villages within an economy that uses less carbon and will still be thriving in 20, 50 and 100 years time. Find out more at www.southwestrda.org.uk

Wave Hub is a major marine renewables infrastructure project that will create an electrical ‘socket’ on the seabed in some 50 metres of water around 16kms (10 miles) off the coast of Cornwall in South West England and connected to the National Grid via a subsea cable. Groups of wave energy devices will be connected to Wave Hub and float on or just below the surface of the sea to assess how well they work and how much power they generate before being commercially produced and deployed. There are four berths available at Wave Hub, each covering two square kilometres. Wave Hub will have an initial maximum capacity of 20MW (enough electricity to power approximately 7,000 homes) but has been designed with the potential to scale up to 50MW in the future. The first wave energy devices are expected to be deployed in 2011.

Legal agreements have been signed with leading renewable energy company Ocean Power Technologies Limited to take the first berth at Wave Hub using its PowerBuoy wave energy converter. Images of PowerBuoy can be downloaded at www.flickr.com/photos/southwestengland. Discussions are ongoing with other device developers.

JDR Cable Systems Ltd manufactured the armoured 25 km (16 mile) 33,000 volt cable and hub assembly for Wave Hub at its factory in Hartlepool in a contract worth £7.6 million. The cable has been made in one continuous length and is made up of six copper cores, 48 fibre optic cables, two layers of steel wire armouring and an outer polymer sheath. It is 16 centimetres in diameter and weighs 1,300 tonnes. The hub weighs around 12 tonnes. It splits the main cable linking it to the National Grid on shore into four 300m cable ‘tails’ to which groups of wave energy devices can be attached and monitored for how they perform. CTC Marine Projects is carrying out the installation of the hub and subsea cable on the seabed in a contract worth around £7 million.

Powermann Ltd of Poole in Dorset is handling the £1 million onshore electrical works that will connect Wave Hub to the UK’s National Grid network, and a new electricity sub-station at Hayle has been built by Dawnus Construction. Offshore contractor Tideway is responsible for the rock dumping operation.

In Cornwall and the Isles of Scilly the Convergence Programmes are made up of European Regional Development Fund (£347 million) and European Social Fund (£153 million). Convergence Programmes will run until 2013 and follow the successful Objective One Programme and prior to that Objective 5b. For further information see: www.convergencecornwall.com.

 Overboarding Hub