The invention is suitable for the fields of new energy, energy saving and environment protection, and provides an intelligent energy system special for use in an office. The intelligent energy system comprises an energy balancing device, a cold energy converting and adjusting device, a heat energy converting and adjusting device, an electric energy inputting device, a refrigerating, cold-accumulating and converting device, a heating, heat-accumulating and converting device, a cold energy outputting device, a heat energy outputting device, a special heat energy outputting device, a heat recovering and circulating device, a cold recovering and circulating device, a residual heat converting device and a residual cold converting device for realizing intelligent balance control connection for various types of energy flow. According to the intelligent energy system, cold and heat energy balance is taken as a core, multiple types of energy such as ground heat energy, solar energy, air energy, water energy, nature gas, wind energy and the like are integrated, and novel technologies such as heat balance, energy conversion, energy circulation, cold and heat recovery, energy accumulation, intelligent control and the like as well as novel equipment are used for performing intelligent balance control, so that energy is recycled circularly, and a plurality of functional requirements such as refrigeration, heating, steam power generation and the like of the office are met integrally.