Kriegers Flak wind farm

Vattenfall is studying the possibility of building an offshore wind farm at Kriegers Flak comprising 128 wind turbines.

The area is located in the southern part of the Baltic Sea between Sweden and Germany, 30 kilometres south of the Swedish city of Trelleborg. The estimated annual production is approximately 2.6 TWh. This corresponds to the domestic electric energy demand of more than 500,000 homes.

On 29 June 2006, the Swedish Government decided to give Vattenfall permission to build Kriegers Flak wind farm. A year later, Vattenfall submitted an application for a network concession for the connection of the farm.

During 2006-2007, Vattenfall conducted extensive geophysical and geotechnical studies of the area. These and other material are to be the basis for the final design of the facility and procurement. The procurement can be carried out during 2010 and 2011, after which work stations will be established and the production of towers and foundations commenced. Onsite installation can take place during 2014-2017.

The work with compiling material for the other permits required runs parallel to the planning of details. Vattenfall’s Board of Directors has not yet reached a decision on investment. This can first occur in connection with the procurement, providing that the project fulfils Vattenfall’s financial criteria.
For more information about the project (only available in Swedish) (new window)

Conceptual Design Study - Foundation

Vattenfall’s offshore project Kriegers Flak has received economic support from the Swedish Energy Agency to evaluate different foundations. The project should make the collective evaluation of different foundations possible and promote technical development concerning the foundation work for offshore wind farms.

At the beginning of 2008, Vattenfall hosted a seminar about the various techniques pertaining to foundation work. About 50 consultants from across Europe participated. Thereafter, several consultants and manufacturers got together to design different types of foundation.

In addition to calculating the costs for the different designs, particular focus has been on how the different foundations can be installed. Other important aspects were the environmental impact and the conditions for operation and maintenance – both of the wind farm and of the foundation.

The results were presented at a conference on March 26th 2009. The results have also been presented at the European Offshore Wind 2009 conference, September 2009. Summary, presentation and reports are all available through the links to the right.