This paper attempts to alter a prevailing assumption that buildings use energy to an understanding that in fact, people use energy. Therefore, to successfully accelerate the transition to a low-carbon society and economy more emphasis should be on motivating people and increasing their awareness leading to an energy efficient building use. In this context, this paper provides insights from the Horizon 2020 MOBISTYLE project. The aim of the MOBISTYLE project is to motivate behavioural change by raising consumer awareness through a provision of attractive personalized information on user’s energy use, indoor environment and health, through information and communication technology (ICT) based services. The most relevant motivational factors and key performance indicators (KPIs) for encouraging a more energy conscious and healthy lifestyle were defined by means of a people-centred approach, adopting anthropological inquiries in different settings located in different European Union (EU) countries. Behaviour change is achieved through awareness campaigns, which encourage users to be pro-active about their energy consumption and to simultaneously improve health and well-being.