The Danish part of Kriegers Flak is a 180 square metre body of water in the Baltic. In 2010, the Danish Energy Agency’s Offshore Wind Turbine Committee identified the area as one of the most attractive locations for a future Danish offshore wind farm.
What makes the Kriegers Flak area special is that Sweden and Germany have also selected their nearby areas for offshore wind turbines. Therefore Kriegers Flak is estimated to accommodate up to 1,600 MW offshore turbines.
Denmarks biggest off-shore wind farm
Vattenfall will, until 2021, build Denmark’s largest offshore wind farm of 604.8 MW at Kriegers Flak in the Baltic Sea.
With a winning price of only 37.2 øre per. kWh it is the world’s lowest price on offshore wind power.
Vattenfall’s winning bid is good news for both private consumers and the business community as well as for the Danish wind turbine industry. The construction of Kriegers Flak is expected to create thousands of jobs and at least 50 permanent jobs when the offshore wind farm is put into operation.
The Plant, Onshore
Onshore, a total of approx. 100 km cables must be installed, a new cable substation must be built and existing substations must be expanded.
Onshore cables between Rødvig and Bjæverskov
From Rødvig to Bjæverskov two parallel 220-kilovolt land-cable systems will be installed. An onshore cable system consists of three conductors, laid next to each other in a cable chute.
Conversion of the substations in Bjæverskov, Ishøj and Hovegård
To receive the power from the offshore wind turbines on Kriegers Flak and transport it into the existing 400-kilovolt grid it is necessary to convert the substations in Bjæverskov, Ishøj and Hovegård. New electrical components will be installed which can increase the voltage from the cables’ 220-kilovolt to the grid’s 400-kilovolt. (Source: energinet.dk)
The Plant at Sea
The grid connection of the offshore wind farm at Kriegers Flak will at sea consist of two transformer platforms and submarine cables.
Offshore transformer platforms
In order to collect the electricity from the 600 MW offshore wind turbines, two transformer platforms must be erected. Their function is to collect the electricity from the offshore wind turbines and increase the electric voltage from the offshore wind turbines to 220 kilovolts. The platforms are placed approx. 11 km from each other. This is due to the fact that in the offshore wind turbine area there is an area for raw material extraction where wind turbines cannot be placed. Therefore, 200 MW offshore wind turbines are placed at the western side of the raw material area and 400 MW at the eastern side.
Each platform will match the size of the transformer platform to Anholt Offshore Wind Farm and will be built on a foundation of a type similar to the Anholt platform.
Timeline over the project
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