Heating and cooling

One of the objective of City-zen is to disseminate the tools and the knowledge gained throught the project. In this web section, you’ll find the lessons on heating and cooling.

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

City-zen’s projects

Comfort cooling residential buildings in Amsterdam Houthaven district

Sustainable district heating and comfort cooling for newly built apartments in the Amsterdam Houthaven district. More info

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Collective drainage for optimal performance of groundwater heat pumps in dense area

Highly efficient energy buildings require innovative technologies. In this case, the selected technology : geothermal heat pumps could not be applied straight forward in Presqu’île, a particular area of Grenoble. More info

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Smart cooling and heating systems for pharmaceuticals processes

Application of using cold from the public drinking water infrastructure and heat from district heating in pharmaceutical processes. More info


Neighbourhood bio refinery : producing nutrients and heat from waste

Waternet will implement a neighbourhood bio refinery, a small scale treatment unit in which raw materials (nutrients such as phosphate) and energy (biogas) can be recovered from black waste water. More info

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Minimal footprint district heating thanks to lower temperature, PCM storage and local solar energy

Heating buildings via a collective District Heating network powered by sustainable sources is often the most economical and realistic option for cities to work towards their COP21 targets. Grenoble already has one of the most extensive heating networks in France. This is a high pressure/high temperature network. More info

State of the art

  • 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