The need for sustainable energy is rising.The members of the European Union have devoted themselves to a 21% share of renewable energy by the year 2010. And the European Parliament has adopted a resolution that stresses the need of setting a mandatory target of a share of 20% renewable energy by the year 2020. At the moment wind energy is one of the few forms of renewable energy that can be harvested efficiently. (Danish Energy Authority, 2005)
The total wind resources in the offshore area of Europe have been assessed at up to 3000TWh, this is in theory enough energy to supply Europe’s total current electricity demand. And as placing space onshore is scarce, many European countries are planning and realizing offshore wind farms to increase the share of renewable energy.