ACE-Retrofitting: Accelerating Condominium Energy Retrofitting

Project Summary

Although local authorities 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 authorities into a high carbon-footprint future. By targeting condominiums, the greatest number of private owners can benefit while creating significant financial and 50-70% carbon savings.

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 of retrofitting condominiums.

CoachCopro, a free collaborative tool developed by the Paris Climate Agency (Agence Parisienne du Climat), is central to this strategy and will be improved and adapted for use in other areas. 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).

Main outputs:

  • An owners and condominium managing structures toolkit to empower this target group, overcome their barriers and increase and accelerate the energy retrofitting of condominiums
  • An operational coaching framework to improve the building professionals’ capacity to renovate condominiums
  • A governance arrangement facilitated by local authorities linking the demand and supply sides as well as a NWE transferable ICT tool for information and project management based on CoachCopro
  • A European campaign led by Energy Cities that will involve hundreds of additional local authorities and ensure that thousands of deep retrofits are achieved 10 years after the project.
  • The project will result in 15,000 households with improved energy classification per year.


Save the date! Approved projects seminar in Lille

18-01-2018 – Lille, France

Seminar for all project partners and lead partners of projects approved in September 2017. Participation is by invitation only. Read more

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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!

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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


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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