5 Most Eco-Friendly Cities in the World

02. Copenhagen, Denmark

Average Rating: 3.3 

CIMI Score: 03

The energy in Copenhagen is generated mainly by waste products from both human households and animals, making this one of the most eco-friendly cities in the world. The energy distribution system is also quite efficient, such as the heat that may otherwise be lost during power generation is instead recaptured and utilized for other purposes. The city also has an extensive network of sensors that monitor the consumption of energy and water, making the city a prime case study of how data can be used for environmental sustainability.