The gap between the ambitions of energy transition, and the observed effects of growth of both inequalities and deterioration of biophysical conditions of Earth habitability urge research in the field of energy modelling to experience a reflexive perspective. The Low-Tech approach, developed but contemporary thinkers and collectives, invite to the critical assessment of our activities, and enable to consider concepts understudied in research work such as energy sufficiency, justice or cosmolocalism. This article introduces this approach through various perspectives and seeks to apply it to energy modelling from the scale of items to that of cities. It opens a variety of research tracks ranging from methodological approaches to use cases. This article also invites to collaboration with a transdisciplinary community: Low-Tech for Research and Teaching.