Heerema completes Hornsea Two offshore stations campaign

Heerema Marine Contractors has completed the installation of the offshore substation (OSS) and Reactive Compensation Station (RCS) for Ørsted’s Hornsea Two offshore wind farm. The stations will ensure that the generated power from 165 wind turbines will be transported to shore. When completed in 2022, the 1.4 GW wind farm will then be the largest offshore wind farms.

Ørsted’s Hornsea Two wind farm is located approximately 89 km off the Yorkshire coast in the North Sea, adjacent to Hornsea One. The wind farm will feature 165 Siemens Gamesa SG 8.0-167 DD 8 MW wind turbines. The two stations will ensure the power generated by the wind farm is transported to shore.

Heerema was responsible for the installation of both foundations and topsides. The company executed the installation of the RCS and OSS jacket foundations in October 2020. The installation was performed by Heerema’s semi-submersible installation vessel Sleipnir.

Sleipnir also transported and installed the two topsides. The vessel traveled to the OSS location on October 18 and installed the 8000 metric ton OSS topside. After that, the vessel moved to the shallow water RCS location and installed the 2000 metric ton RCS topside.

The safe and successful installation completes three years of close partnership with Ørsted and their fabricator Sembcorp Marine Offshore Platforms.

Sustainability measures

Sleipnir has a wide range of sustainability measures, including dual-fuel functionality allowing the vessel to run on LNG, a cleaner fuel than standard MGO. During both Hornsea Two installation projects, the vessel ran on LNG, reducing carbon emissions and our impact on the planet. Source: Heerema

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