Before revision:  To answer that firstly, we have conducted a literature review discovering definitions from different disciplines, secondly, gathering the key factors that are drivers for energy transition, finally, a preliminary analysis of the factors is conducted within the context of European Union data preliminary finding that household net income and governmental legal actions related to environment are potential candidates to predict energy transition within countries.
After revision:  To answer that firstly, we have conducted a literature review discovering definitions from different disciplines, secondly, gathering the key factors that are drivers for energy transition, finally, an analysis of the factors is conducted within the context of European Union data preliminary finding that household net income and governmental legal actions related to environment are potential candidates to predict energy transition within countries.