This document summarizes GDF SUEZ's expertise in sustainable development assessment tools, including Life Cycle Assessment (LCA), Material and Energy Flow Analysis (MEFA), Ecological Footprint, and Carbon Balance. It then describes a MEFA project conducted for Lille City that counted material and energy flows, identified opportunities to optimize resource use, and involved local stakeholders. The project provided recommendations to support Lille City's sustainable policies and lessons for future local sustainability assessment projects.

1. Sustainable development assessment tools dedicated to territorial collectivities GDF SUEZ Research and Innovation Division expertise 6 th International Conference of Territorial Intelligence - Besançon September 2008, 17 th Amélie BONARD

10. Assessment tools for what purposes ? - + + - Better communication Increased awareness Better environmental assessment quality - + + - Better global understanding LCA MEFA EFP CB LCA MEFA EFP CB Better environmental assessment quality

13. Studied territory 35 km 2 - 226 800 inhabitants

15. Results : example of the energy balance * Y ear 2005 * Energy consumption (sum of imports and recycling) of 524 ktoe * toe : ton of oil equivalent * Very small proportion of energy produced by the city (less than 4%) * Greenhouse gases have been quantified using emission factors proposed by ADEME

19. Thank you for your attention… Contact : amelie.bonard@gdfsuez.com