Have China's pilot emissions trading schemes promoted carbon emission reductions?– the evidence from industrial sub-sectors at the provincial level

Abstract

Scholars and policy makers put great emphasis on analyzing the mitigation effect of an emissions trading scheme (ETS), while empirical researches on the mitigation effects of China's pilot ETSs are both thin and with significant limitations. This paper tries to analyze this issue from the perspective of industrial sub-sectors at the provincial level. We first calculate the carbon emissions of 37 individual industrial sub-sectors in each of China's 26 provinces from 2005 to 2015, covering both direct and indirect emissions. Cautiously identifying the industrial sub-sectors covered by China's pilot ETSs, we explore the causal impact of China’s pilot ETSs on reducing carbon emissions at the initial stage (2013–2015) and analyze the paths of achieved emission reductions, applying a difference-in-difference (DID) model and a combination of DID estimator and propensity score matching technique. Our results yield robust evidence that China's pilot ETSs have significantly promoted carbon emission reductions of the covered industrial sub-sectors, and this impact has presented an overall enhanced trend according to year-by-year analysis. The results also show that the pilot ETSs have failed to enable covered industrial sub-sectors to effectively cut carbon intensity and the impact on carbon intensity is not obvious in any of the first three years, and the carbon emission reductions have mainly been achieved through the decreased outputs of industrial sub-sectors. China's policy makers should tighten the free allowance allocation approaches in order to facilitate low-carbon technology innovations and reduce carbon intensity of industrial sectors.