Skagerrak 4
New interconnector between Norway and Denmark

Statnett and are now constructing the Skagerrak 4 interconnector, the fourth DC interconnector between Norway and Denmark.


The Skagerrak 4 cable will have a capacity of 700 MW. The interconnector will be in addition to the three existing cables between Norway and Denmark established in 1976/1977 and in 1993. The Skagerrak 4 cable will increase the total capacity between Norway and Denmark, from 1 000 MW to 1 700 MW.


As an example, the cable can transport energy corresponding to half of Oslo's annual energy consumption. 

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All projects start with the planning phase. The following is important in this phase:

  • Identification of needs
  • Concept choice studies 
  • External quality assurance 

Statnett is responsible for planning and applying for implementation of the projects we believe to be socio-economically viable. For international interconnectors, the most important criteria are socio-economic profitability and the contribution to security of supply.

Licensing process

Interconnectors to countries outside of the Nordic region require a licence for facilitation of power exchange - a so-called foreign trade licence. The Norwegian Ministry of Petroleum and Energy processes the application. The Ministry chose to submit Statnett's application for the planned interconnectors to Germany and the UK for public consultation. Any appeals of the decision will be decided by the King in Council, who will make the final decision. The foreign trade licence arrangement is special for Norway, but the countries we plan to connect to also require licences. However, these licences have more in common with Norwegian construction licences.


The project has now entered the construction phase. This phase can comprise of forest clearing, construction and improving new and existing roads on land. At sea, seabed surveys will often be carried out before cable installation and jetting and in some places burial once the cable has been laid. The area around the connection point will also be expanded to create space for a new station to connect the cable to the Norwegian power grid.