Siemens A/S was contracted by Westermost Rough Limited to supply and install key high‑voltage equipment on the offshore substation platform, including two 170 kV gas‑insulated switchgear (GIS) bays. Siemens also supplied, installed and commissioned the OFTO station control and protection system, providing SCADA and protection interfaces for the offshore and onshore substations and their connection to National Grid at Hedon. This work delivered the primary switching, control and protection functions for the HVAC offshore transmission assets that were later transferred into the Westermost Rough OFTO.