TenneT

TenneT acted as the Dutch transmission system operator responsible for delivering the offshore grid connection enabling Ecowende’s Hollandse Kust (west) Site VI wind farm to export power to the Netherlands’ onshore transmission network. The grid connection included an offshore ‘socket at sea’ platform installed in the Hollandse Kust (west) area, where the wind farm’s 66 kV array system could be connected and the voltage stepped up to 220 kV for efficient transmission to shore. According to project information, TenneT’s offshore platform formed part of the standard Net op Zee connection concept for the Hollandse Kust (west) zone and was designed to bring Ecowende’s electricity ashore near the Wijk aan Zee/Heemskerk area. The scope described by TenneT also encompassed the offshore export cable link(s) between the platform and landfall and the associated onshore cable connection to the onshore high-voltage infrastructure at/near Wijk aan Zee. This grid connection work supported the construction and commissioning pathway for the 760 MW Ecowende project, providing the essential interface between the wind farm’s offshore electrical system and the national grid so that offshore generation could be delivered to end users once the wind farm entered service.