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Iberdrola and the German transmission system operator 50Hertz have signed a cooperation agreement for the construction, installation and commissioning of the offshore substation of the Baltic Eagle wind farm.
The offshore substation used jointly will house the technical equipment collecting the electricity produced by the wind turbines and will connect to the Lubmin land transport network.
Iberdrola further awarded contracts to the Iemants-Fabricom joint venture, responsible for manufacturing all structural elements of the substation, and to the marine contractor Heerema Marine Contractors, who will transport and install the substation to the site. by Baltic Eagle.
Siemens Gas and Power is responsible for the delivery of all major electrical equipment for the Iberdrola low voltage part of the OSS.
The substation is made up of a foundation and an upper part housing the transformers as well as the electrical equipment. The four-legged steel liner foundation weighs approximately 2,900 tonnes and will be secured with two hammered piles on each leg. The upper part consists of a closed multi-storey module of 5 bridges with a total net weight estimated at approximately 4,250 tonnes.
Manufacturing in progress
Manufacturing is already progressing in various places in Europe and the manufacture of platforms has already started in Belgian shipyards.
The departure to the site is scheduled for 2022, while the completion of installation and commissioning at sea is expected to take place in 2023.
When the Baltic Eagle wind farm is connected to the grid, the wind turbines will supply electricity through the inter-array cables to the offshore substation where it will then be transformed from 66 kV to 220 kV and transmitted via two submarine cables. high voltage across the 90 -Kilometer distance from the landing point to Lubmin.
The Baltic Eagle offshore wind farm is located in the northeast of the island of Rügen off the Pomeranian coast in the Baltic Sea at a water depth of 40 to 45 meters. Iberdrola obtained 476 MW of capacity during the transitional auction held in 2018.
The wind farm will include 50 wind turbines with a capacity of 9.525 MW, most likely supplied by Vestas, which will be installed on monopile foundations, and will cover an area of ​​40 square kilometers. Commissioning is scheduled for 2024.
Once operational, the wind farm will produce around 1.9 TWh of electricity per year, enough to meet the demand of 460,000 homes and avoid the emission of 800,000 tons of CO2 into the atmosphere each year, Iberdrola said.
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