The research has received funding from the Seventh Framework Programme (FP7/2007-2013) under grant agreement n° [314363].

Replication activities make good use of gained ZenN-knowledge

The replication of the studied techniques and methods is one important target of the ZenN project and has been a focus of consideration by local partners in Grenoble. The City of Grenoble has initiated an ambitious replication plan within the VILLENEUVE neighborhood, and also at the wider scale of the “Grenoble Alpes Metropole”.

Since October 2015, more than half of the 154 dwellings in the building "40 ARLEQUIN" have been rehabilitated, including insulation of facades, a new ventilation system and a thermal regulation device in each dwelling. 
Replication of the studied techniques and methods is one important target of the ZenN project and has been a focus of consideration by local partners in Grenoble. Replication calls for diverse efforts at different stages of the project, and in Grenoble a number of replication efforts have been implemented:

Before the work starts (studies and consulting phase):

  • Social landlord ACTIS signed a 9-year contract with a consortium of companies, architects and specialized consulting firms, including a definite section for 50 ARLEQUIN (87 dwellings) and a conditional one for other buildings (representing 535 dwellings), in order to perform the work on its entire property assets. 
  • The city of Grenoble asked the head-architect of the urban renewal project to define special architectural and urban prescriptions for rehabilitation work, in order to ensure the coherence of the interventions and the preservation of the building characteristics at the neighborhood level and over time. 

During the renovation work, in preparation of the post ZenN phases:

  • The aim of the two building refurbishment sites of 40 and 50 ARLEQUIN is the replication of technical, financial and juridical solutions at the neighborhood level (social and private housing). In order to ensure the knowledge transfer between social landlords and co-ownerships, a consortium of architects and specialized consulting firms has been recruited by the City of Grenoble, to help co-ownerships in planning their future work. 

  • The City of Grenoble has answered to the “Durable cities and territories” national call launched by French ANRU (Urban Renewable National Agency) in September 2015 with a retrofitting strategy based of the ZenN knowledge. The perimeter of the proposed project includes the whole ARLEQUIN building area, representing approximately 1 300 dwellings. The proposed project has two main objectives: 
    o Develop management, exploitation and appropriation tools to ensure real performance and quality of use over time
    o Elaborate and implement a strategy for an energy and economic optimization at the neighborhood level, with several options relating to the heating system (heat storage, connection to the return water circuit, etc.).
    Other cities in the Greater Grenoble, and even in France, are sure to be interested in this global approach of energy issues applied to “disadvantaged urban area”. 

  • Finally, the City of Grenoble and its sub-contractor MANASLU Ing. have also engaged a transfer of the knowledge gained in ZenN to the Metropolis of Grenoble. A new retrofitting action plan called “Mur/Mur 2” has been initiated for residential communities, with the study of the technical referential for different levels of energy consumption target. This study is carried out in cooperation with MANASLU Ing., which has been in charge of the ZenN technical solutions choice. Consequently, the ZenN solutions will be the references so as to reach the highest level of energy performance for residential communities. A potential of 5 000 dwellings in residential co-ownerships has been identified within the frame of this project.

For more information, contact:
Christophe Romero, Chef de Projet at Ville de Grenoble
E-mail : 

Updated: 2016-09-14


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