Siemens Gamesa Renewable Energy provides operations and maintenance services for the 174 × SWT-7.0-154 turbines at Hornsea Project One under a long-term service agreement with Ørsted. O&M operations are coordinated from the Ørsted East Coast Hub at the Port of Grimsby East, the world's largest offshore wind O&M base, supporting both Hornsea 1 and the wider Ørsted UK fleet.