Barcelona.

                                      

Barcelona was recently ranked the number two smart city in Spain in the IDC report, and with good reason. The city is a pioneer in smart city and low-carbon solutions. It was among the first in the world to introduce a solar thermal ordinance about a decade ago, recently launched the LIVE EV project to promote the adoption of EVs and charging infrastructure, and the city also recently announced a major partnership to develop a living lab for smart-city innovation.

There were many other strong candidates which are runners-up in this first ranking, including Amsterdam, Melbourne, Seattle, São Paulo, Stockholm, and Vancouver.