MIDDELGRUNDEN OFFSHORE WIND FARM, DENMARK

Middelgrunden offshore wind farm, near Copenhagen, Denmark (55°40' N, 12°38' E)

In March 2001, Middlegrunden in Denmark became the world's largest offshore wind farm. Estimated annual production is 85,000MWh, equal to 3% of Copenhagen's total consumption. 20 Bonus 2MW turbines are placed 180m apart in a curve, with a total windfarm length of 3.4km.

The wind farm was developed off the Danish coast by a consortium of Københavns Energi and Middelgrundens Vindmøllelaug. The two partners own ten 2MW turbines each in Middelgrunden.

The turbines are equipped with a modified corrosion protection, internal climate control, high-grade external paint and built-in service cranes. Middelgrunden was previously used as a filling up area with a water depth of 2m to 6m.