Research on evaluation of chain supplementing& strengthening efficiency in key areas of China's new power system

Strengthening the research on major and subversive technologies of new power system are the keys to the construction of new power system. Based on the two perspectives of accurate inputs and efficient outputs, an evaluation system of the efficiency of the key areas of the new power system in chain supplementing& strengthening is constructed, covering 8 secondary indicators and 32 tertiary indicators. On this basis, the comprehensive efficiency of the key areas of the new power system is measured using the DEA model for the period of 2017–2022, as it turns out, the new energy automobile industry has relatively higher efficiency value during the sample time, while the energy management industry needs to be further improved in order to increase efficiency. In general, each industry has a significant downward trend in comprehensive efficiency in 2020, with some recovery in 2022. The result provides an important guide to further enhance the efficiency of chain supplementing& strengthening in key areas of the new power system and healthy and sustainable development of the new power industry.