The global economy has been hit by crises in recent decades and the COVID-19 pandemic has contributed to great uncertainty in the possibility of a lasting recovery and an energy transition that will enable sustainable green growth. Budgetary constraints impede the regular delivery of public services, especially in developing countries. Energy efficiency and sustainable economic growth in Croatia can be improved with public-partnership models providing public services. However, this concept is often considered as not appropriate due to many misconceptions in public opinion. We analysed a survey of almost 1500 Croatian students with the aim of verifying the importance of formal education in the recognition of realistic aspects of PPP among the population, which represents important social capital. In comparison to other students, students who have been taught about public-private partnership models at university are more likely to recognise certain misconceptions about public-private partnerships and are more likely to think that it is possible to successfully implement such projects in Croatia. Compared with others, students in the field of energy have shown a greater tendency to apply models of public-private partnership in the energy sector, even though these concern the exploitation of natural resources where there is a traditional tendency to protect the autonomy of public governance. Compared to their male colleagues, female students are more prone to misconceptions about PPPs and are less supportive of private management of public infrastructure.