A message from the Chairman

Claude Arnaud

Cities are already home to half the world’s population and generate a massive energy and environmental footprint. Yet at the same time, they provide real leverage to achieve the aims of energy transition, through a renewal of the way we travel, work and consume. Improving urban energy efficiency is thus a major issue, yet one that is particularly complex to address. Much of this is due to the systemic nature of the city, with very diverse modes of production and…

Efficacity intitute

Efficacity is an R&D centre dedicated to energy transition in urban territories. Since its launching in 2014, it brings together the skills of over 100 researchers from industry and public research on a single site, to foster close collaboration between…

Our aim

Efficacity aims to develop a new approach for urban energy efficiency. The institute works on innovative solutions development to support actors at every stage in their urban projects. In support of projects. Tools and methodologies…


Round tables on new neighborhoods: mobilities, energies, materials.

23 Feb
The round tables are co-organized within the framework of the DSA of architect-town planner by the School of Architecture of the city & territories in Marne la Vallée and the Council of Architecture,...Information

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Our R&D projects

Research works are organised into three programmes, each divided into two projects.

Our partnership