Renewable energy sources are an alternative to traditional sources and are based on inexhaustible and environmentally friendly supply. Various controversies have been stirred up by the development of energy production from renewable sources, e.g., due to the high cost of these investments or carbon footprint at the production stage of renewable installations, or later in the disposal process. However, they seem to be gradually offset by the numerous benefits that outweigh the initial costs of their support. Therefore, it is not surprising that European Union (EU) countries are at the forefront of the transition to a low-emission economy. This is evidenced, e.g., by a 22% reduction in greenhouse gas emissions in Member States, with gross domestic product (GDP) growth of 58% between 1990 and 2017. Nevertheless, the use of renewable energy sources such as sun, wind, water, etc. is much more expensive than burning fossil fuels. This argument of high investment costs can be decisive in decisions of both public debates and individual households. Therefore, education on renewable energy sources is needed to facilitate the process of transition to a zero-emission economy in the European Union countries. This education should, above all, be addressed to young people, who will be making these decisions in the future. Reduction of greenhouse gas emissions by 2050 will largely depend on the knowledge and awareness of young people. The aim of the paper is to diagnose the perception of the transition to a zero-carbon economy in the opinion of Polish schoolchildren. We put a particular emphasis on renewable energy sources as a key element shaping the security of the state in terms of sustainable ecology and friendly social development. We achieved the aim of the study through a research process with use of theoretical and empirical research methods. We analysed the literature on the subject and the current legal acts in the field of renewable energy sources. We also conducted a survey of high school students in Poland. The analysis of the research results allowed us to formulate recommendations on the possibility of shaping state security in the field of sustainable ecology and friendly social development.