Aims: To design energy-saving control system of electrical system in office buildings; Methods: discusses the structure and function of electric control system of construction equipment, and points out the energy saving mode of the electrical automation control system of construction equipment. Finally, applies the above theory to the design of energy saving control system in X company’s office center electrical system; Results: The design of the electrical energy control system for the X company office center to save about 20% of the cost; Conclusions: The design of the electric energy saving control system has obvious energy-saving effect, and has important value of application popularized.
