*Article* **A Simulation Model of Power Demand Management by Manufacturing Enterprises under the Conditions of Energy Sector Transformation**

**Justyna Smagowicz 1, Cezary Szwed 1,\*, Dawid D ˛abal 2 and Pavel Scholz 3**


**Abstract:** This paper addresses electricity consumption managemen<sup>t</sup> in manufacturing enterprises. The research aims to provide manufacturing enterprises with an effective tool to control electricity costs. Recently, some factors have been observed to affect the rapid changes in the operating conditions of enterprises. These include the transformation of the power sector toward renewable energy, the disruption of supply chains resulting from a coronavirus pandemic, political crises, and process automation. A method for the analysis and managemen<sup>t</sup> of electricity consumption in enterprises based on simulation modeling is proposed. The simulation model contains predefined objects representing physical system elements and the data processing algorithm. The production order execution time, energy consumption, employee overtime, and machine load are included in the model. The results show that it is possible to determine the level of power available for the process completion and its influence on the production volume and realization time. In the studied case, when the available power was reduced by half, there was an increase in order execution time of nearly 25 percent and an increase in energy consumption of nearly 15 percent. The method can be used in the operational activities of enterprises as well as extended to different types of production processes.

**Keywords:** electricity consumption; simulation modeling; production management; manufacturing company
