Methodological aspects of modeling the fuel and energy complex in the context of energy security

One of the most important goals of the energy industry is to ensure a shortage-free and reliable energy supply to consumers. To achieve this goal, it is necessary to assess the level of energy security of the fuel and energy complex (FEC) of the country. For these purposes, it is proposed to form a model of the energy system that would take into account the peculiarities of all process flows that take place in it. For this purpose, we conducted a review of Russian and foreign studies in the field of modeling of the FEC in the course of the work. The main result presented in the article is a methodology for the building of a unified model of the fuel and energy complex to assess the level of energy security