“…Even if these studies differ in terms of survey periods, countries and institutional context, survey typology, methods of elicitation, as well as the methodology and econometric techniques applied, they give some common results [2,7,24,35]. Mainly, two sorts of variables are included in the analysis, in order to account for differences in perception of green electricity: demographics (i.e., income or education) as well as attitudinal and psychological variables (i.e., such as environmental awareness, knowledge to capture the differences in perception of RES or social norms) [1,6,17,19,26,37].…”