Firm secures key grid connection approval for Windanker

Transmission system operator 50Hertz has received key planning approvals for the offshore route of the Ostwind 3 grid connection for Iberdrola’s planned 315MW Windanker offshore wind farm in the German Baltic Sea.

The Windanker offshore wind farm is being developed northeast of the island of Rügen (Image credit: Sean Gallup/Getty Images)

The approvals apply to the section in the Exclusive Economic Zone (EEZ) and the section in territorial waters, known as the 12 nautical mile zone. 

The approval process is still under way for the onshore route, which is the subject of the third authorisation section, and for the substation.

The Windanker offshore wind farm is being developed northeast of the island of Rügen. The ministry of economics, infrastructure, tourism and labour of Mecklenburg-Vorpommern issued the planning approval for the 77.5-kilometre cable route within territorial waters, spanning from the EEZ to the connector between the onshore and offshore cables at the port of Vierow.

The federal maritime and hydrographic agency (BSH) issued the planning approval for the section in the EEZ – covering the 24-kilometre cable route from the offshore substation and within the German EEZ, as well as construction of the offshore substation itself.

50Hertz is awaiting approval from the same ministry for the 4-kilometre onshore route, including the grid connection point, running from the connector at the port of Vierow to Stilow substation.

In addition to the cable systems connecting the wind farm to the transmission system, 50Hertz will for the first time handle the planning, construction and operation of the offshore substation. Completion of the grid connection is scheduled for Q3 2026.


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