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Hornsea Two monopile installation to start next month

© Ren Van der KloetDEME Group’s Innovation vessel will arrive on location this month.
DEME Group’s Innovation vessel will arrive on location this month.

Work to install monopiles for what will be the world’s largest offshore wind farm are due to get underway in the coming weeks.

Danish renewables giant Ørsted’s 165-turbine Hornsea Two development, around 55 miles off the coast of Yorkshire, will surpass its predecessor Hornsea One by generating 1.4GW of clean energy upon completion in 2022.

Belgium-headquartered DEME Group’s Innovation vessel will be on site this month to carry out monopile works.

It will be supported by the Pacific Orca which will also begin works on location next year.

Both ships are heavy-lift jack up vessels, which have legs that can securely fix the ship to the seabed, allowing the underside to be lifted out of the water while onboard cranes lift and manoeuvre the heavy foundation components.

In total, 165 monopiles and transition pieces will be installed at sea in preparation for the site’s 8.4MW turbines.

A selection of 30 transition pieces are being manufactured at EEW OSB’s factory in Teesside, with the first load out having recently been completed, whilst Danish based Bladt are suppling the additional 135 components.

With a height from sea level to blade tip of 204m, the turbines will also feature new 82m long blades which are currently being fabricated at the Siemens Gamesa Renewable Energy blade factory in Hull.

Last month, 2.4km of cable, which will carry power from the development to the onshore substation, was successfully pulled ashore.

Patrick Harnett, Hornsea Two programme director for Ørsted said: “Even during these challenging times, we’re still able to take these important next steps towards the construction of this game changing wind farm.

“We’re extremely pleased to once again work alongside suppliers who share our vision for a greener world and look forward to the upcoming milestones that will continue to pave the way in terms of innovation for offshore wind.”

Bart De Poorter, general manager DEME Offshore, added: “After months of detailed planning and by working in close collaboration with Ørsted and our suppliers, we are delighted to kick-off the offshore installation works at Hornsea Two.

“We have approached this complex project as true partners, which has been crucial considering the unprecedented circumstances we are dealing with.

“Not only are we confronted with the challenges brought to us by the Coronavirus but we had to overcome the setback when the new offshore installation vessel ‘Orion’ had a crane accident before she was delivered to DEME.

“We very much look forward to continuing our close partnership with this Client so we can achieve the safe delivery of this exceptional wind farm.”

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