The top "Green" cities are sprinkled throughout the globe.
In 2008, the UK’s Guardian newspaper called Freiberg, Germany the world’s greenest city. Energy-efficient homes were the norm, and one super-efficient, passive-energy house boasted needing 93 percent less electricity, and less heating fuel than the average home by a factor of 40.
Today, Freiburg – known as the European center of the modern environmental movement – offers an environmental studies program to further polish its green image, but no longer ranks first, or even among the top five green cities, largely because its sustainability model was so appealing and achievable that Freiburg itself got lost in the shuffle.
Link:
http://www.energyboom.com/policy/world%E2%80%99s-greenest-cities-then-and-now