Testing the environmental Kuznets curve with structural breaks: the role of globalization, energy use, and regulatory quality in South Africa.

This study uncovers the role of regulatory quality, energy use, and globalization in the conventional environmental Kuznets curve (EKC) for South Africa by incorporating structural breaks in the series based on quarterly frequency data between 1996:Q1 and 2016:Q4. Applying the autoregressive distributed lag (ARDL) model, we confirm a cointegration between the variables. The empirical results suggest the validity of the EKC hypothesis in South Africa.

Testing the environmental Kuznets curve hypothesis: the role of energy consumption and democratic accountability.

Considering the role democratic structures play in shaping the policies that enhance environmental quality, this paper tests the environmental Kuznets curve (EKC) hypothesis by incorporating the role of energy consumption and democratic accountability for nine countries between 1990 and 2014. The pooled mean group (PMG) methodology and Emirmahmutoglu-Kose Granger causality test are employed. The empirical results validate the EKC hypothesis in the long run.