Abstract: To improve the energy utilization efficiency and operational economy of industrial microgrids, this study takes a mechanical manufacturing enterprise as a case study and develops an industrial electrical automation energy management system based on a coordinated "source-grid-load-storage" architecture. By designing key technologies-including multi-objective dynamic optimal dispatch, uncertainty management strategies, and combined heat and power (CHP) coordinated optimization-the system achieves efficient coordinated control of photovoltaic generation, energy storage, electrical loads, and thermal energy. Experimental results demonstrate that the proposed system significantly enhances photovoltaic utilization and energy storage cycling efficiency while reducing operational costs and carbon emissions. These findings validate the effectiveness and practicality of the proposed approach.