EN
The concept of energy security embraces three main dimensions: security of supply (technical dimension), competitiveness of the energy market (economic dimension), and sustainable development (environmental dimension). In this article the concept is extended onto the fourth dimension—social. This is verified empirically through opinion polls and in-depth interviews as well as a questionnaire with energy experts. The results of those surveys confirm relations between all four dimensions of the energy security concept. The environmental dimension is most important for society and the technical one for energy experts, while both groups perceive the social dimension as less crucial.