The city has more than 300 kilometres of cycle lanes, and 36% of all citizens commute to work by bicycle, and the city targets to increased this to 50% by 2015. The cities bicycle sharing scheme is free, you simply deposit a DKK 20 coin which you can get back when you return the bike to one of the numerous bike racks. Copenhagen has the largest consumption of organic food of any mayor city. 51% of food consumption in the city's public institution is organic, and the private consumption of organic products is 23%.
Copenhagen is one of the few major cities where the water in its harbour is clean enough to swim in. Looking out over the water provides a view of one of the city’s main green landmarks - Middelgrunden offshore wind farm. When built in 2000 it was the world's largest offshore farm. With capacity of 40 MW, the farm delivers about 4% of the power for Copenhagen. The installation is owned by a cooperative, and can therefore be viewed as an indication of the importance of wind energy to Danish citizens. The turbines are 50% owned by around 10,000 small investors and 50% owned by the municipal utility company. Wind power provides almost 20% of Denmark’s electricity.