Last updated on: June 1, 2011 08:23 IST Copenhagen, Denmark

Copenhagen is widely considered one of the greenest capitals in the world. Chosen as the host of the Global Summit on Climate Change, the city served as a model for the 170 countries that attended.

Policies in place have already helped the city move closer to this goal. Copenhagen has invested heavily in clean-energy technology.

Once based on coal and oil, the city is now run almost entirely on natural gas. Denmark is also home to 5,600 windmills that supply around 10 per cent of the country’s electricity.

The world’s largest offshore windmill park is located in Copenhagen and powers 32,000 homes, which is around 3 per cent of the city’s energy.

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Image: Copenhagen is one of the greenest capitals in the world.