Construction Begins at England’s 1.2-GW Hornsea One Offshore Wind Farm

Orsted today said that it has started construction on the Hornsea One offshore wind farm with the installation of 174 monopiles off England’s east coast.

Transition pieces will be installed on the monopiles next. Orsted said that GeoSea’s installation vessel Innovation carried the monopiles, which are 65m long.

Turbine towers will be affixed to the transition pieces. Innovation will help with the transition piece installations, and will be joined by A2Sea’s vessel Sea Installer in March.

Wind turbines for the project will be supplied by Siemens, and will have a capacity of 7 MW each.

“After years of planning, it is fantastic to see the initial stages of offshore construction begin. My thanks to the teams working day and night on this significant milestone,” Duncan Clark, Orsted’s program director for the project, said in a statement.

Hornsea One, when built, will be the largest offshore wind farm in the world, but its neighbor, Hornsea Two, eventually will take that title. Last August, Orsted received approval from the U.K. Secretary of State for Business and Energy to proceed with Hornsea Two, which has a planned capacity of 1.8 GW.

Orsted expects to complete construction of Hornsea One in 2020.

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