Nantes, France

The act2 project in Nantes was designed in 2003 as an integrated approach to enrich the local energy policy stated in the local Climate and Energy action plans led by Nantes Métropole Urban Community.

It also aims at improving practices of a complete chain of actors involved in the construction process: from decision makers to citizens, passing by building companies.
In this respect, activities to be implemented focus on three main areas:

1 – Demonstration
Demonstration projects in Nantes account for about 80,000 m² of new buildings. They set a new energy ambition which aims at being applied on the whole Ile de Nantes district

2 - Research-action
Nantes partners collaborate with scientific and technical organisations to develop energy-related knowledge and foster the upgrade of local (from strategic urban and energy plannings to operational construction and refurbishment projects)

3 - Good pratices dissemination
Specific communication vectors, training sessions and Europe-wide crossing of experiences.


Use of Renewable Energy Sources

• Heat Pump
• Photovoltaics
• Thermal use of Biomass

Low Carbon Technologies

• Insulation
• Monitoring and Targeting (M & T)
• MVHR Mechanical ventilation with heat recovery
• District heating
• Specific façade solution (relevant to energy)
• Glazing, Windows

Nantes is part of the CONCERTO Project act2.


Site facts & figures

• Estimated population involved: 13,000
• Approx. geographical area coverage: 350 ha
• Approx. energy saving: 7,000 MWh/y
• Approx. energy from RES: 201 MWh/y electricity /1,013 MWh/y thermal /16,800 MWh/y heating recovery from waste

The consortium

• Nantes Métropole Urban Community
• ADEME Pays de la Loire (Agence de l'Environnement et de la Maîtrise de l'Energie)
• City of Nantes
• SAMOA (Société d'Aménagement de la Métropole Ouest Atlantique)