Abstract: A zero carbon emission energy system was established for a civil comprehensive park with various business types, and the energy storage system was used to coordinate the matching between the self-generation supply power and the park demand power. The energy flow of the cooling and heating equipment was analyzed under the system working condition, and the dynamic model of the equipment was established. The system performance was evaluated with the analysis of indicators such as the primary energy saving ratio and the carbon dioxide emission reduction ratio, and with the research of the flexibility of the park after energy storage scheduling. Results show that the primary energy saving ratio and the carbon dioxide emission reduction ratio of the energy system change from 33.0% to 100.0% and from 22.7% to 100.0%, respectively. The goal of zero carbon emission can be achieved when the supplementary power is fully matched with the nearby green energy power such as wind energy and solar energy.