Overview: It is said that Copenhagen is primarily designed for its people: it’s very practical and very down to earth. In the Danish capital, everything works extremely well. In terms of energy, the city has done its homework and now ranks among the world leaders in generating clean energy and sustainable development. In the port of Copenhagen, 27 windmills adorn the landscape. But the port here isn’t an industrial mess – between the ships, the water is clean, and the docks are used by locals for casual family swimming.