We are assessing the determinants (factors) that lead consumers to participate in the energy transition in order to create better policies for them. The focus is on the reasons behind investments in flexibility markets (e.g. PV panels), energy efficiency (e.g. building insulation), mobility (e.g. electric vehicles) and energy conservation (e.g. sharing economy). The objective of this survey is to build a set of archetypes (a very typical example of a certain person which is present in the collective unconscious) that characterise as much as possible the European population when investing in technologies or behaviors or products related to the energy transition.