In order to achieve the transition to an energy system without CO2 emissions, changes in the economy, in business models, in legislation and in consumer behaviour are necessary. ECN part of TNO develops knowledge in the field of social and behavioural sciences in close cooperation with the other roadmaps. The new unit ECN part of TNO has in-depth knowledge across the entire breadth of the energy system. We use this knowledge to draw up well-founded notions of aspects of energy management that contribute to the public debate. ECN part of TNO supports the authorities at all levels in the energy transition. In addition, trade associations, NGOs and companies also make use of the knowledge.