The ability to regulate power flows in the power supply system of an industrial enterprise is an important factor in its reliable operation in the conditions of the existing electricity market and the critical state of the power system of a regime type. An innovative and promising method of improving the power supply system of an industrial enterprise is the use of mobile power plants with renewable energy sources to ensure reliability, quality, energy efficiency and controllability of processes in internal local power grids, taking into account environmental safety issues. The paper proposes the design of a universal mobile power plant with an average power of 15 kW, developed by the authors, in order to solve the problems of regulating the imbalances of electricity at an industrial enterprise by controlling power flows. Also, the mobile power plant can additionally perform the functions of a backup power source and a regulator consumer. A scheme for connecting a mobile power plant and an algorithm for selecting its operating modes in the enterprise MicroGrid system have been developed. A schematic implementation of a local MicroGrid with a mobile power plant is presented. The modelling of the proposed solutions is carried out, the results of which confirm the effectiveness of the proposed method of power control in the enterprise power supply system.