TenneT’s HKZ transformer platforms in Dutch North Sea hit major milestones

The Netherlands: Dutch grid operator TenneT has this week installed the topside of the second offshore transformer platform.

 


TenneT Hollanse Kust Beta topside

Image source: TenneT

The Netherlands: Dutch grid operator TenneT has this week installed the topside of the second offshore transformer platform.

The platform is built to serve Vattenfall’s Hollandse Kust Zuid offshore wind farm in the Dutch North Sea.

Following the installation of the first transformer platform, the Hollandse Kust Zuid Alpha, in December 2021, Tennet had Allseas install the 3,950 T Hollandse Kust Zuid Beta topside on a previously installed jacket.

On what was a rather foggy Monday in the North Sea off Scheveningen, Allseas used its giant Pioneering Spirit installation vessel to lift the topside, which recently arrived from Dubai, and install it on the jacket.

The HKZ Beta high voltage alternating current (HVAC) offshore transformer platform with a 700 MW capacity, and built by Petrofac and Drydocks World Dubai, will now be prepared for the connection to Vattenfall‘s wind turbines.

According to TenneT, the Hollandse Kust Zuid Alpha transformer platform, to be used for a connection for offshore wind farms Hollandse Kust (zuid) I and II is now ready for use.

“TenneT completed the installation and energization of the offshore grid connection. Wind farm developer Vattenfall can now connect the wind turbines to the high voltage grid.” TenneT said in a statement.

Once fully operational in 2023, Hollandse Kust Zuid, known as the first subsidy-free wind farm area in the world, is expected to generate enough electricity to power more than two million households, TenneT added.

 

Source: Offshore Engineer