VIDEO: Loadout of TenneT's Hollandse Kust (North) Transformer Platform

Credit: TenneT/Crossing Zebra
Credit: TenneT/Crossing Zebra

From EQUANS' fabrication hall in Antwerp, Belgium, the topside for TenneT's Hollandse Kust (north) transformer platform was placed on a floating barge in the port on Monday. 

Following the load out, the steel structure weighing over 3,500 tons will be secured and prepared for transport to its final offshore location in the coming weeks.

According to Tennet, during the load out, the topside for 'North' was carefully steered past its 'cousin' for the German offshore wind farm Baltic Eagle on self-propelled trailers (SMTPs).

The special transport then drove from the quay onto a floating barge. After this successful load out, everything will be prepared in the coming weeks for the sail away, which will take place in late September/early October.  

"After a two-day sea voyage, the topside will then be installed 18.5 kilometers off the coast of Egmond aan Zee. There, the undercarriage (jacket) has already been firmly anchored to the seabed since November last year," says Guus Siteur, offshore platform project manager for TenneT. "With the help of the installation vessel Orion, the topside of 47 meters long, 35 meters wide, and 25 meters high will be placed on the undercarriage and then welded in place."

Two years after the first steel cut, the topside, built by the EQUANS/Smulders consortium, is ready to be installed.

This makes it the first of the three topsides they are delivering. 'North' will be followed by 'West Alpha' and 'West Beta'. 

According to project manager Siteur, the 'North' platform will be fully operational in 2023 and operator Crosswind's wind turbines can be connected to it.

From the offshore sockets, each with a capacity of 700 megawatts, TenneT will bring the wind power-generated electricity to land in the coming years. Credit: TenneT/Crossing Zebra

"The sea cables for 'North' are already ready in the seabed. Behind the dunes near Heemskerk/Wijk aan Zee, these will be connected to the cables that will soon feed the power into the high-voltage substation along the A9 in Beverwijk. This part of the cable link will also be completed in the coming months," Siteur said.

CrossWind, a joint venture between Shell and Eneco, in 2020 won the tender for the subsidy-free offshore wind farm Hollandse Kust (Noord) in the Netherlands. 

The consortium plans to have Hollandse Kust (Noord) operational in 2023 with an installed capacity of 759 MW, generating at least 3.3 TWh per year. 

"This is enough renewable power to supply more than 1 million Dutch households with green electricity. The wind farm will be located 18.5 kilometers off the coast of The Netherlands near the town of Egmond aan Zee," the CrossWind said in 2020.

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