Abstract
This paper uses the data of Chinese cities and A-share listed companies from 2010 to 2022 and utilizes the implementation of Broadband China as a quasi-natural experiment to assess the impact of digital infrastructure construction, as exemplified by Broadband China, on enterprise carbon emissions. By applying the difference-in-differences method, the findings indicate that developing digital infrastructure can help reduce carbon emissions in enterprises. This reduction is achieved primarily by improving the efficiency of energy utilization in urban areas and enhancing corporate green technological innovation. Additionally, the impact of digital infrastructure on lowering carbon emissions varies by corporation and region.