Integration of enterprises electricity material costs into the structure of its consumption efficiency indicators

The purpose of the article was to consider the issues of increasing the level of efficiency of the use of electric energy – the main type of energy in the conditions of the functioning of mining enterprises, using the example of their types with underground mining methods. It is confirmed that changing the modes of electricity consumption by receivers of the analysed types of enterprises that operate in a continuous cycle of work – 24 hours a day, is one of the integral and effective measures to increase their energy efficiency. However, it is noted that the existing canonical formula for determining the level of energy efficiency of enterprises does not allow establishing the level of achievement of the effect in the analysed variant of the measure. It is emphasised that the inconsistency of this formula in determining the level of energy efficiency also applies to other modern variants of increasing energy efficiency, including networks with distributed generation. It is proposed to determine the level of energy efficiency by the indicator of the corresponding material costs for the energy consumed. To confirm this proposal, a study of the variability of electricity consumption modes in the hours of the day, taking into account the variability of tariffs, was conducted. It has been analysed and proven that the consumption and control of the operating modes of electricity receivers during the hours of the day should be carried out in the format of a process. An analytical justification of the proposed process has been carried out and conclusions have been drawn