Hollandse Kust (zuid) Alpha and Beta high-voltage connections ready for use

TenneT’s high-voltage connections for the offshore wind farms Hollandse Kust (zuid) I and II, known as Hollandse Kust (zuid) Alpha and Beta, are ready for use.

The offshore Beta grid connection was installed and powered on by TenneT; the offshore Alpha grid connection had already been finished in March. Now that the wind turbines can be connected to the high voltage grid, wind farm developer Vattenfall can. Today at the Net op Zee event at the Hollandse Kust (zuid) land station on the Maasvlakte, TenneT, stakeholders, and contractors commemorated this important milestone.

Hollandse Kust (zuid), or HKZ for short, links the same-named wind farm region, which is situated about 20 kilometers offshore of The Hague, to the Dutch mainland. The 1400 MW HKZ wind farm, developed by Swedish energy company Vattenfall and owned by Vattenfall, BASF, and Allianz, will be the first and largest offshore wind project in the world when it is fully operational in 2023.

Power sockets at sea

The area of the wind farm will produce enough green electricity to power 1.5 million homes for a year.

A land station, sea cables, and two High Voltage Alternating Current (HVAC) transformer stations make up Hollandse Kust (zuid), which is situated about 20 kilometers off the coast of The Hague. In order to transmit wind energy to the mainland, Vattenfall’s wind farm area can be connected to these transformer stations, which are referred to as “power sockets at sea.” Vattenfall CEO Martijn Hagens and Manon van Beek connected the offshore wind farm with the onshore grid ceremonially and symbolically during the Net op Zee event.

Image source: TenneT

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