City-zen is a five years project, started in March 2014 and ended in November 2019.

For more results, click here or check our final interactive booklet !



Next events


–  –  -> The Biennale of the Transition Cities

Grenoble, 9-16 March 2019


–  –  -> City-zen Days 2019

Amsterdam, 1 – 3 April 2019






–  –  -> City-zen Conference

Brussels, November 2019





Some Media Coverage


Dutch Vehicle to Grid pilot: charge and deliver – World premiere in Amsterdam (articles in Dutch)


Dutch read about cold harvested from drinking water, first time worldwide, now in Amsterdam, December 2017 (article in Dutch)

Stay connected to know more about our events

  • The Project

    A city operating entirely on clean energy. In theory, it's possible. But in real life? How to integrate new solutions in existing buildings, systems and people's lives? What are the technical, economic or social barriers? And how to overcome these? That's what we've learned by doing in 20 projects in Grenoble and Amsterdam.

  • Our Activities

  • Achieved Impacts

    • 20 innovations in Grenoble & Amsterdam
    • 35,000 tonnes CO2 saved per year
    • 76,000 m² renovated residential buildings
    • 10,000 dwellings connected to a Smart Grid