TenneT

TenneT acted as the Dutch transmission system operator responsible for delivering the offshore grid connection project “Net op zee IJmuiden Ver Beta”, which provided the electricity transport link from the IJmuiden Ver offshore wind area (including wind farm site Beta/Zeevonk) to the Dutch onshore high-voltage grid at the Maasvlakte. TenneT’s scope described the development and realisation of a 2 GW direct-current connection, designed to reduce transmission losses over longer distances. The connection concept included an offshore platform to collect power from the wind farm’s 66 kV array system and convert and transform it to 525 kV DC for transmission to shore. On land, a converter/transformer station was planned to convert 525 kV DC to 380 kV AC for integration into the national 380 kV transmission network. TenneT also described the cable route and onshore works, including underground cabling from the landfall through the Maasvlakte area towards the new high-voltage station at Amaliahaven. The project schedule indicated preparations with contractors for the construction phase, with construction starting in 2024 and commissioning aligned to the wind farm’s expected in-service date around 2029.