The analysis of the implementation effect of the supply-side reform (SSR) in the industrial sector of China’s provinces and the reasons behind them are of great significance for China to formulate relevant policies in the future. However, this work has not yet been carried out. Industrial development performance is closely related to energy and environmental efficiency (EEE), and the effect of the SSR implementation is directly reflected in EEE. This study fills this gap by analyzing the EEE of 30 provinces in China from 2012 to 2017 using data envelopment analysis and Malmquist index methods. The results show that the positive effect of China’s implementation of SSR has emerged. This positive effect is mainly reflected in the implementation of measures such as reducing overcapacity, which has promoted the technological innovation of enterprises. However, the low management level and resource-allocation efficiency hinder the further improvement of the implementation effect of the SSR, which should be paid special attention to in China’s future supply-side reform. In addition, we believe that in the context of China’s high-quality development and carbon neutrality goals, the SSR should be given more connotations, which are to increase the requirements for strengthening green and low-carbon development.

To enhance the energy efficiency and energy density of physical energy storage (PES) systems, this study introduces a novel hybrid advanced adiabatic compressed air and gravity energy storage (HAACAGES) system. This system integrates advanced adiabatic compressed air energy storage (AA-CAES) and gravity energy storage (GES) components, utilizing the mass of the compressed air (denoted by Δ m ) to make the HAACAGES system overwhelm the capabilities of individual systems. A numerical analysis model was established to validate the proposed system. Results demonstrate the HAACAGES system outperforms the individual systems in terms of both energy efficiency and density. Specifically, the energy efficiency is always higher than the sum of the individual systems at altitudes from 0 to 3 km. At 3 km altitude, the energy density reaches nearly 1.5 times that of conventional AA-CAES systems. At 1 km altitude, it exceeds 10 times that of conventional GES systems. Overall, the HAACAGES system shows clear potential as a promising solution for the next generation of large-scale PES systems.