Issy-les-Moulineaux

France

Twin city
National Mission Ecosystem France
Population 67k
City Area 4.3 km²
City active since December 2023

Issy-les-Moulineaux lies just southwest of central Paris, along the banks of the Seine River in the dense metropolitan region of Île-de-France. Once an industrial suburb, the city has transformed over recent decades into a hub for digital businesses, media companies and urban innovation. With around 70,000 residents packed into a relatively small area, Issy-les-Moulineaux faces many of the pressures common to fast-changing metropolitan cities, including traffic congestion, rising temperatures and the growing risk of heatwaves linked to climate change.

Climate action in the city is closely tied to questions of urban density and quality of life. As part of the wider Paris region’s transition, Issy-les-Moulineaux has focused on integrating sustainability into everyday urban planning rather than treating it as a separate policy area. The city has invested heavily in public transport, smart energy systems and low-carbon neighbourhood development, while also working to increase green space and reduce the urban heat island effect.

Its approach stands out for the close link between digital innovation and environmental goals. New districts have been designed around energy-efficient buildings, shared mobility and connected infrastructure, with partnerships between the municipality, technology firms and local residents playing a central role in shaping the city’s transition.

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