In order to increase the Dutch offshore wind capacity up to 4,450 MW until 2023 the Dutch Government agreed to develop three new wind-park zones in the North Sea which are Borssele, Hollandse Kust Zuid and Hollandse Kust Noord with a total capacity of approximately 3,500 MW. The current standard voltage level for offshore wind park inter-array grids is commonly 33 kV. Due to the fact that the average single capacity of wind turbines is going to increase to 6-8 MW and higher and the average total capacity of wind parks for new offshore wind projects also increases, a higher voltage level of 66 kV is expected to be used for inter-array connections of new offshore wind projects. TenneT is considering the option of utilising 66 kV as an array system voltage. Read the full study report.
66 kV systems for offshore wind farms
TenneT: offshore wind farm transmission systems