Middelgrunden is an offshore wind farm near Copenhagen that generates 40 MW of power, providing enough energy to power 40,000 households and accounting for 4% of Copenhagen's annual energy consumption. It has a total height of 102 meters and an efficiency of over 90%, with a total investment of 48 million Euro and over 8,500 members of a cooperative owning half the project.

3. Middelgrunden - facts Rated power of 40 MW Covers 4% of Copenhagen's annual energy consumption - enough for 40,000 households. Total height of 102 m Efficiency is more than 90%. Owned 50% by the local utility - and 50% by a cooperative. Total investment of 48 mio. Euro. 8.553 members. Simple pay-back time: 9 years.