The article systematizes the basic provisions of the concept of energy security, in which the emphasis is placed on uninterrupted access to energy sources, their diversification, environmental friendliness, and ensuring resistance to external threats. The content of the concept of «energy security», which acts as a system-forming element of national (economic, ecological, technical) security, orienting this system to the goals of sustainable energy development thanks to the effective use of fuel and energy resources in the context of ensuring economic growth, social progress, and environmental well-being, has been studied. It is proved that for the interpretation of the logic of energy development, it is advisable to use the system-synergistic approach, which explains the transformation of a complex system by passing bifurcation points, the formation of order attractors, and the emergence of self-organization mechanisms. Among the factors that determine the level of energy security, the geopolitical aspect associated with a wide variety of fluctuating influences that can bring the system out of equilibrium is highlighted in the first place. Any imbalance in the energy system directly affects the economic and social spheres, the state of the environment, as well as the international competitiveness of the state. Therefore, special attention is focused on the development of effective institutions, their consolidation in the daily activities of business entities that are part of the fuel and energy complex, and timely adaptation to changes in the operating environment. For the formation of attractors of sustainable energy development, it is necessary to apply effective management mechanisms that combine institutional and market components. Energy security is defined as a management object in which certain functional units, regulatory mechanisms, and algorithms for making and implementing management decisions are distinguished. The trends considered in the course of the study confirm the high energy interdependence of states in the conditions of globalization and, accordingly, the need to develop international energy security management mechanisms. As a result of combining the principles of flexibility, adaptability to modern geopolitical trends, requirements for socio-economic efficiency and environmental standards, on the one hand, and the characteristics of resistance, stability (to ensure national stability), on the other hand, a special regime of sustainable energy development at the level of individual states, integration associations and in the global dimension.