Siemens Gamesa will supply the world’s largest offshore wind farm: Ørsted orders 165 wind turbines for Hornsea Two


With the official signing of the wind turbine order with Siemens Gamesa the developer and operator
Ørsted has now kicked off the largest offshore wind farm to date. Once commissioned in early 2022
Hornsea Two will provide clean energy for approximately 1.3 million British households. The
installation of the 165 large direct drive wind turbines at the project site 89 kilometers off the British east coast is expected to start in 2021.

The record-breaking project with a combined rating of 1,386 MW is not only the
largest wind project in Siemens Gamesa’s history, but also the largest single order in the history of
offshore wind energy. So far, this leading position has been defended by Hornsea One with a capacity
of 1,218 MW and which similarly was developed by Ørsted and is currently under construction.

The nacelles for Hornsea Two will be produced at SGRE’s innovative factory in Cuxhaven, Germany,
while the majority of the blades will be made at the factory in Hull, UK, where the pre-assembly work
will also be carried out. Towers are expected to be partly sourced from UK suppliers. A single 8-MW
turbine is capable of generating enough electricity for over 8,000 average European households.
Originally planned for up to 300 turbines Hornsea Two has been adapted to the progress of the
significantly more powerful hardware. With only 165 units at the same total output, the project benefits from significantly improved economic efficiency and simultaneously reduced LCoE.

The new SG 8.0-167 DD is equipped with a rotor 167 metres in diameter. The blades, 81.5 meters
long, deliver an 18% wider swept area and 20% more annual output than its predecessor, the SWT-
7.0-154. It features the technology proven in the direct drive platform combined with a larger-scale
rotor in order to offer customers higher returns while minimising the associated costs and risks.

Source: Siemens Gamesa