The article is devoted to the conditions and principles of the functioning of the generating complex in a changing external and internal environment. The study determined that the stability of the system is the most important state within which it is possible to streamline the production process. At the same time, in order to ensure stability, it is necessary to determine and manage the factors affecting the state of the system. In the generating complex of the electric power industry, these factors should be divided into the mega-, macro-, meso- and microenvironment, the characteristics of which are presented in the study. The paper presents a scheme that includes the main factors affecting the sustainable development of the generating complex of the electric power industry. The study defines the conditions for regulation and management of factors that ensure the stability of the generating complex. In conclusion, the study presents the main findings and results of the work.

The study is dedicated to ensuring sustainable functioning and economic development of the electric power complex. The article analyzes the impact of the fuel and energy complex on the economy of the Russian Federation. The paper presents the stages of the formation of the electric power industry, which ensures the functioning of industrial production and the vital activity of mankind. The study proved that the electric power complex is a capital-intensive industry and is connected by a single technological process. Of course, in order to maintain the stability and efficiency of the industry, it is necessary to ensure the management of the stable functioning and economic development of the electric power complex. The study analyzed the definitions of stability, which contain a set of indicators containing both technical and technological parameters, and economic. Based on the results of the study, factors were formulated that affect the sustainable functioning and economic development of the electric power complex. In conclusion, the study presents the main findings and results of the work.

The article analyzes indexes that characterize properties of coal seams and are used in calculation of loads on cutting tools of mining machines, or in selection of drives. Determination of geological structure complexity of coal seams takes into account hard inclusions and dirt bands in coal, as well as their size and lithology type. The notion of coal cuttability in spalled and unspalled face zones is explained using the coefficient of coal spalling. For strength estimation of complex structure coal seams with dirt bands and hard inclusions, it is proposed to use the index of integral cuttability which is the sum of coal cuttability and generalized index of densities and properties of inhomogeneities in the seam. In geological documentation, strength characteristics of inhomogeneities are described using the ultimate compression strength or Protodyakonov factor of hardness (in Russia). For this reason, the authors propose an empirical expression to recalculate cuttability of inhomogeneities in terms of uniaxial compression strength or hardness factor. The estimation algorithms of brittleness, grindability and breakability of coal seams are presented. The formula of coal abrasiveness is given. Systematization of data on breakability of coal seams has made a framework for classification of coal seams as media disintegrated by cutting tools of mining machines.