[Current Status of Energy Production and Consumption in Chinese Cities and Evaluation of Energy Efficiency]

As the center of human economic activities， cities are experiencing rapid economic development while the total energy consumption continues to rise. Improving urban energy efficiency and enhancing the quality of energy utilization are of great significance. In this study， on the basis of the macro background of national green development， the super-efficient SBM model was used to measure urban energy efficiency and assess the regional characteristics and evolution patterns of energy efficiency in different cities. The results show that the consumption and production growth rate of China's main energy sources increased in 2023. The energy consumption structure at the city level has been continuously optimized， and the transformation results are significant. The energy efficiency of China's urban areas shows a fluctuating upward trend， with significant disparities in energy efficiency among different cities. Spatially， urban energy efficiency is higher in the northeastern and eastern regions and lower in the central and western regions. From 2011 to 2021， the urban energy efficiency in the central， eastern， and western regions improved much more than that of the northeastern region， and the energy efficiency gap between regions gradually narrowed. The findings of the study facilitate proposing targeted energy efficiency improvement recommendations for different cities and also provide policy references for actively seeking mutual cooperation among cities and forming a mutually beneficial energy saving and emission reduction pattern.