The regional energy station enhances the energy utilization efficiency and reduces carbon emissions by integrating various energy resources, while facing challenges of energy dispatch and the coordination among different energy systems. Taking a regional energy station in Dengzhou City of Henan Province as the case study, the operational characteristics in conjunction with the local geographical, climatic, and building features of the groundwater source heat pump system were evaluated and discussed in this paper. Based on the measured datasets collected from the smart monitoring platform, the system was evaluated in-depth across three aspects: energy usage characteristics, energy efficiency, and economic benefits. For the first energy consumption characteristics, energy usage patterns in different seasons were discussed. For the second energy efficiency, the indicator of Energy Efficiency Ratio was assessed for three typical seasons to be 5.08. The last economic benefit was assessed by comparing the system’s operational costs with those of other energy systems. The findings indicate that the system demonstrates significant advantages in both energy conservation and emission reduction, with a positive correlation between energy efficiency and loads. However, unstable loads during the initial operational phase could lower down the system performance at the same time. In addition, based on the analysis, optimization recommendations were also given in order to enhance the system efficiency and reduce operating costs. In summary, the results provide valuable insights for the energy-efficient design under similar climatic conditions and building types.