The emergence of the issue of energy transition in the international public debate has largely contributed to turn it into a must in terms of research priorities. The field is complex, multidisciplinary and with a variable geometry, demanding a cross-focused observations: environment, housing mobility, city, communities and territories, consumption, innovation / technology... all being legitimate points of entries that required to be put in perspective and connected in order to "invent" a new research field: the sociology of energy.