This paper extracts the elements of energy transition issue

emphasizing that the behaviors of stakeholders such as policy makers

and energy suppliers can impact the energy transition dynamic significantly. The main aims(explanation

prediction

projection

and optimization)

contents

and challenges of energy transition researches are presented

and the state-of-the-art research paradigms for energy transition and their limitations on addressing the challenges introduced by human behaviors are reviewed. Finally

this paper suggests a new research paradigm

hybrid simulation of technology-economic-behavior model with human participants

in which the energy transition target and pathway is optimized by repeatedly carrying out experimental economic simulation. The subsequent paper will discuss the uncertainties and analysis approaches in the energy transition researches.