<p>The article reviews quality of the electric power supplied to СБШ-250MН drilling machines used in the mining industry of our republic, methods of control on the operating modes of electrical installations, as well as issues of raising the energy efficiency. Recommendations are also given for improving the quality indicators of electric power supplied to the drilling machines, and efficient use of electric power of the drilling machine’s. Moreover, the article analyzes modern frequency control systems, optimal solutions for achieving energy efficiency and possibility of controlling compressor units used on drilling machines. The introduction to the article reveals scientific works made by several foreign researchers into improvement of energy efficiency and power supply to drilling machines. The main part presents a brief overview of calculations of the energy consumed by electric motors at high-power drilling machines. The research findings retrieved based on the analysis and data from mining enterprises, enabled developing the energy consumption indicators of high-power electrical equipment of the СБШ-250MН drilling machine, as well as methods for their optimal control. Achieving the goal of developing an energy efficient drilling machine system СБШ-250MН requires practical implementation of proposals and conclusions of the study.</p>