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The final turbine has been installed at the 1.2GW Hornsea One offshore windfarm.
The North Sea project will now undergo commissioning before being officially inaugurated in 2020 as the world’s largest offshore windfarm, taking the title from the 659MW Walney Extension.
The windfarm comprises 174 of Siemens Gamesa’s 7MW turbines, the first of which was installed in February.
The project has been developed by Danish firm Orsted. Programme director Duncan Clark said: “The milestone of this last turbine being installed only nine months after the first one was erected is just one small part of this record-breaking project. Hornsea One has truly paved the way for the next generation of offshore wind farms.
He continued: “At the time of taking on the project, it’s scale and the technical pioneering required seemed a Herculean challenge, but a truly extraordinary effort from all those involved have managed to make this impressive feat of engineering the new norm.
“We have benefitted from fantastic working relationships with contractors and suppliers, and that includes vessel providers who have maintained a constant stream of communication to ensure that turbine installation has been concluded on time and within budget.”
Hornsea One secured a strike price of £119.89/MWh as part of a non-competitive Contracts for Difference (CfD) allocation round in 2014.
It will be overtaken as the world’s largest offshore windfarm by its 1.4GW sister project Hornsea Two and later by the 3.6GW Dogger Bank project, which secured multiple agreements in the latest CfD auction at strike prices of around £40/MWh.
Note: All figures quoted in 2012 prices
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