新基建背景下特高压工程对高技术企业创新效率的影响研究OACHSSCD

The"new infrastructure"is an infrastructure strategy under the new stage of China's economic development,and it is also an important guarantee for enterprises to implement innovation.Accordingly,this paper uses a multi-period difference-in-differ-ences model to investigate the impact of UHV projects on the innovation efficiency of high-tech enterprises.It is found that only UHV projects in power-output regions can improve the innovation efficiency of high-tech enterprises,and then the impact of UHV projects on the innovation efficiency of high-tech enterprises is explored only for the output regions,while conducting mechanism and heterogeneity analysis.The results show that in the output regions,the UHV project affects the innovation efficiency of high-tech enterprises through improving enterprise performance and promoting digital transformation;The positive promotion effect is pronounced for high-tech firms located in Central China,state-owned enterprises,SMEs,and firms from sectors linked to UHV construction&operation,based on which targeted policy suggestions are put forward.This study provides solid empirical evidence to support that"new infrastructure con-struction"promotes technological innovation in China.