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SUBSEA ARRAY CABLE INSTALLATION BEGINS
The latest stage in the construction of Gwynt y Môr Offshore Wind Farm, off the North Wales coast, has got underway with the start of inter-array cable installation.
The subsea cables will connect all 160 turbines to the two offshore substations already installed more than eight miles off North Wales in Liverpool bay. the work is being carried out by UK based Reef Subsea power & Umbilical Limited using the polar prince vessel.
REEF SUBSEA POWER
The £40m contract for the company, which has offices in Stockton-on-tees and Aberdeen, will see Reef Subsea power & Umbilical assist with engineering, project management, RoV (remotely operated vehicle) and survey operations linked to the subsea installation and burial of all in-field array cables.
Electricity generated by the Gwynt y Môr turbines will be carried via the array cables to the offshore substations and then taken by four subsea export cables to a beach landing point at pensarn, near Abergele, North Wales. From there, the energy will be carried underground via an 11km cable route to a new substation near St Asaph and fed into the National Grid.
PROJECT PROGRESS progress is well underway with works on the underground cable route and onshore substation almost complete. Wind turbine installation is scheduled to begin from the port of Mostyn on the Flintshire coast in April with first generation expected in the summer.
ONE OF THE LARGEST OFFSHORE WIND FARMS CURRENTLY IN CONSTRUCTION IN EUROPE
At 576MW, Gwynt y Môr is one of the largest offshore wind farms currently in construction in Europe. It is a shared investment between partners RWE Innogy, Stadtwerke München GmbH and Siemens(1).
Once fully operational, energy generation from Gwynt y Môr is expected to be equivalent to the average annual needs of around 400,000 homes(2). Gwynt y Môr Offshore Wind Farm Limited has awarded contracts worth more than £80million to companies in Wales.
Reef Subsea
www.reefsubsea.com RWE NPOWER
RWE npower renewables’ Gwynt y Môr project Director, toby Edmonds said: “The start of array cable installation is an important milestone in the construction of Gwynt y Môr. 148 kilometres of 33 kV cable has been manufactured by the Norwegian company Draka and will be placed in the seabed to connect each turbine to the offshore substations.
“Half of the wind turbine locations already have foundations installed and the array cables will be connected to the transition pieces before the towers, blades and hubs are placed later this year. Array cable installation is scheduled to continue throughout 2013 and into 2014.”
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www.windenergynetwork.co.uk
tim Sheehan, Executive Vice president Commercial of Reef Subsea, said: “We are extremely pleased to be now working offshore installing cables on the Gwynt y Môr offshore wind farm. It has been a very complex mobilisation phase, which has demanded a significant amount of pre-engineering work, major vessel enhancements and delivery of a new cable plough. With the support of a very skilled team both onshore and offshore, we look forward to continuing the installation of all 161 inter-array cables throughout the rest of the year and into 2014.”
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RWE npower renewables
www.rwe.com
(1) Gwynt y Môr represents a total investment of more than EUR2 billion, shared between RWE npower renewables’ parent company RWE Innogy(60%); Stadtwerke München GmbH, Munich’s municipal utilities company (30%); and Siemens(10%).
(2) Energy predicted to be generated by the proposal is derived using wind speeds monitored
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