IAU Île-de-France is a Foundation for better living cities.
The Paris Region Planning and Development Agency is dedicated to territorial entities, offering analysis, studies and decisionmaking tools.
Urban planning, land management, transport and mobility, economy, ... more than 160 experts focus on the develoment of the capital's region.
I can connect you with those people and their studies.
For COP 21 take a look here : http://www.iau-idf.fr/en/know-how/scope-of-activities/cop21.html