New Danish Offshore Wind Farms  

Pave the Way for Innovative Power Grid

2013.03.06

Two  large new offshore wind farms in Denmark made possible through the Danish government’s ambitious energy agreement can lead to the establishment of the world’s first sea-based power grid in combination with offshore wind turbines.

The construction of Denmark’s largest offshore wind farm so far will be completed at Anholt in the autumn of 2013, and preparations for the next two large-scale offshore wind farms are already well underway. These are Horns Rev 3 in the North Sea and Kriegers Flak in the Baltic Sea off Møn.

The decision to establish two new offshore wind farms is part of an ambitious energy agreement entered into by the Danish government and a broad majority of parties in the Danish Parliament. When ready, the two farms will combined be able to deliver an amount of power corresponding to the yearly power consumption in one million households.

The Danish Minister for Climate, Energy and Building, Martin Lidegaard, says:

- “The two new offshore wind farms mean that Denmark will once again take its place among the world’s leading wind power nations. At the same time, we’ll take the first important step in the implementation of the energy agreement, which is to make Denmark less dependent on oil, coal and gas and ensure that half of the country’s energy supply is based on wind power by 2020.”

Innovative Sea-based Power Grid

The completion of the two offshore wind farms will, furthermore, lead to the construction of the world’s first sea-based power grid in combination with offshore turbines. Once the state-owned company Energinet.dk has completed constructing systems that connect offshore wind farms to the power grid, plans are to begin building a sea-based power grid in collaboration with German company, 50Hertz Transmission. The completion of the wind farm at Kriegers Flak opens up important possibilities for establishing a new type of power grid, Peter Jørgensen, Vice President, Electricity System Development, Energinet.dk, explains:

- “A sea-based power grid at Kriegers Flak will be able to transport power from the offshore turbines to the shore and will also be used for exchanging power between Denmark and Germany. This technical solution also entails that power can be sent from Danish and German offshore wind turbines to both Denmark and Germany, which means that the national economy, the market function and security of supply are strengthened. And it also helps Denmark preserve its leading position in exploitation of sustainable energy.”

Peter Jørgensen believes the development of new technical solutions for a sea-based power grid at Kriegers Flak may act as a stepping stone towards establishing a much larger power grid in the North Sea.

Background

Sea-based power grids ensure improved security of supply because several exchange connections make countries with wind power less vulnerable to fluctuations in power production as a consequence of varying wind speeds. Furthermore, technical systems are exploited better when they can be used for exchange of energy between countries in periods of time where turbines produce less power than usual.

Energinet.dk is busy doing preliminary surveys for the two new offshore wind farms, both of which will be put out for tender by the Danish Energy Agency in 2013-2015. Horns rev 3 will be the first one to be put out for tender because this farm will also be the first one to be put into operation. It is expected that the first offshore turbines at Horns rev 3 will begin to produce power some time in 2017.

Read more about the latest development in the Danish offshore industry in the latest ON/OFF Yearbook, Renewables.

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Peder Bo Sørensen

Peder Bo Sørensen

+45 2170 5851

pedsor@um.dk

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