ACE-Retrofitting: Accelerating Condominium Energy Retrofitting

Project Summary

Although local governments are tackling climate change, a majority of buildings in North-West Europe are still energy-inefficient and in need of deep renovation.

If action is not taken it will lock local governments into a high carbon-footprint future. By targeting condominiums (tenements and flatted buildings), the greatest number of private owners can benefit from more energy efficient homes while creating significant financial and carbon savings (50-70%).

Energy Cities, guided by a strategic energy transition vision and its capacity to ensure widespread success in its network, along with 6 local authorities from 5 different countries in NWE will introduce and promote a governance arrangement that overcomes the legal, human and financial barriers to the energy retrofitting of condominiums.

CoachCopro, a free, online collaborative tool developed by the Paris Climate Agency (Agence Parisienne du Climat), is central to this strategy and will be improved and adapted to be used in other parts of Europe.

In France, this web-based platform has already successfully assisted condominium owners (demand) and building professionals (supply) through an iterative process which cultivates trust relationships and generates direct and indirect jobs (potentially 19 net jobs created per €1M investment).


Want to talk about ACE-Retrofitting?

We provide you with a standard presentation (PDF) in 4 European languages:

You may also use our promotional card to spread the word about the project!

For all questions regarding communication, please contact floriane.cappelletti [ at ]



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Kick-off and site visits - Condominium energy retrofitting in Paris : It takes trust, entrepreneurship and ambition!

Posted on 24-01-2017

On the occasion of the kick-off meeting of ACE-Retrofitting - Interreg North-West Europe, the Paris Climate Agency (Agence Parisienne du Climat - APC) organised in cooperation with Energy Cities a full-day event on the energy retrofitting of condominiums, on 18 January 2017 in Paris Read more

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This project is also supported by the French Energy Management Agency - ADEME.

Project Partners

Lead partner

Organisation Contact name Address Email Website
Energy Cities Laura Guérin 2 Chemin de Palente
Name Contact Name Email Country
Ville de Liège Marc Schlitz Belgium
Agence Parisienne du Climat Emmanuel Poussard France
Universiteit Maastricht Annemarie Van Zeijl-Rozema Netherlands
Aberdeen City Council Kevin Christie United Kingdom
Stadt Frankfurt am Main Energiereferat Wiebke Fiebig Germany
Gemeente Maastricht Weike Medendorp Netherlands
Autonoom Gemeentebedrijf Energiebesparingsfonds Antwerpen Jan Meuleman Belgium
Changeworks Resources for Life Ltd. Tessa Clark United Kingdom


Understanding owners’ motivations to support renovation of condominiums: What research and experimentation tell us

Posted on

With 12,000 households living in condominiums in Maastricht and among them 7,000 with a G energy label, the energy retrofitting of these buildings is a major challenge for the municipality. The workshop and site visit organised on 16 November in Maastricht - as part of the Interreg North-West Europe ACE-Retrofitting project, aimed to better understand owners’ barriers to taking action in their buildings thanks to feedback from academic research and project experience. Read More

ACE Retrofitting in Frankfurt – We need to reduce the energy consumption of our buildings by 70% by 2050!

Posted on

The second project meeting of ACE-Retrofitting - Interreg North-West Europe, was hosted by the City of Frankfurt from 12 to14 June, including a half-day conference which gathered ACE partners and German stakeholders involved in the energy retrofitting of condominiums. A great opportunity to better understand the challenges that the cities face to retrofit their condominiums. Read More


Exploiter les données de CoachCopro pour la constitution d’un observatoire de la rénovation énergétique des copropriétés.

, Genève, Suisse

Grâce à une utilisation harmonisée de l’outil dans 5 agences de l’énergie de la métropole parisienne et à un partage de données avec les principaux opérateurs du logement privé, l’agence parisienne du climat a pu mettre en place un observatoire de la rénovation énergétique des copropriétés à l’échelle de la métropole du Grand Paris.
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Workshop & site visit: Understanding and accompanying owners in the energy retrofitting of their condominium

, Maastricht, the Netherlands

You are facing the challenge of the energy retrofitting of privately-owned condominiums in your city? One big challenge is how to help owners take the step from not retrofitting to retrofitting. In order to know how condominiums can most-effectively be supported, the underlying barriers for not taking action need to be better understood. In this symposium we will explore the mechanisms that prevent action to be undertaken, as well as some approaches and benefits of retrofitting.
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