This pact, signed between the City of Guyancourt and the CTECSQY association collective (represented by the association SQY en Transition), defines a roadmap for the 2026-2032 mandate. It aims to act against the collapse of biodiversity, climate disruption, and resource depletion, by promoting a social and non-punitive ecology.
The Pact is structured around three main axes: sobriety (saving energy and water, reducing waste, organic food, soft mobility), city adaptation (renovation of municipal buildings, greening schoolyards, public space development), and resident engagement through education and citizen participation.
Ten major commitments accompanied by monitoring indicators have been defined for the 2026-2032 mandate. These include accelerating the renovation of built heritage with a goal of -40% energy consumption in municipal buildings, continuing investment in energy efficiency (9.7 million euros already invested), and studying the feasibility of a heating network.
The pact also encourages soft mobility with more bicycle parking, new continuous cycling routes, and preparation for the generalization of 30 km/h speed limits. It aims to secure school surroundings and generalize the "Savoir Rouler à Vélo" (Learn to Ride a Bike) program.
In terms of economic development, school catering will aim for 50% organic ingredients with a daily vegetarian menu. Support for solidarity reuse, the creation of a tool lending service, and the sale of unsold canteen meals at reduced prices are also part of the commitments.
Waste reduction will be pursued through support for local businesses, development of composting, and promotion of eco-responsible events. Exemplary management of natural public spaces, promotion of urban agriculture, and a responsible purchasing policy are also central to the pact.
Resident mobilization will involve maintaining the annual ecological transition program, nature activities for schools, and the creation of a digital World Clean Up Day. Biodiversity will be promoted through the creation of an atlas and continued tree planting.
Finally, cooperation within the intercommunal area (Saint-Quentin-en-Yvelines - SQY) will be strengthened to advance transition issues, particularly concerning active mobility, waste, and the protection of agricultural land, as well as water management.
This Pact builds upon actions already undertaken since 2020, such as the rehabilitation of 1,687 social housing units, support for sustainable mobility for 98 employees, and the implementation of solidarity reuse schemes.
The partners of the Pact include the City of Guyancourt, the CTECSQY collective, as well as Saint-Quentin-en-Yvelines (SQY), EPAPS, ALEC, CEREMA, UVSQ, the Société des Grands Projets, Restos du Cœur, the association Ressources & Vous, and residents through GAP and Citizen Councils.
