This paper evaluates the real effects of the environmental regulation at the firm level. Using the implementation of Chinese Air Pollution Prevention and Control in 2013 as a quasi-natural experiment,difference-in-differences estimation shows that: (1) environmental regulation significantly improve the application of green innovation by firms, and this relationship is robust to different specifications and alternative measures; (2) three possible channels are the improved levels of the environmental protection subsidy, total factor productivity (TFP) and environmental protection investment of enterprises; (3) our findings are particularly pronounced in subsamples with the application of utility green innovation and state-owned enterprises (SOEs). Overall, this paper reveals the micro-mechanisms behind the real effects of environmental regulation on firm green innovation, thus providing timely implications for regulators concerned with environmental protection.
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