Abstract
This study examines the disaggregated impacts of non-renewable energy (NRE) indicators comprising coal, gas, and fuel, and trade openness (TO) entailing imports and exports on environmental quality proxied by (carbon emission per capita, co2pc) in selected G-20 countries with the conditioning role of technological innovation (ecoi) from 1990 to 2018. The empirical analyses are evaluated using a battery of estimation techniques comprising augmented mean group (AMG), common correlated effect mean group (CCEMG), and mean group (MG), respectively. The following major results are evident from the analyses. First, coal, gas, fuel, and imports increase co2pc while exports reduce it. Second, the unconditional and conditional effects of technological innovation (ECOI) significantly reduce co2pc. These results are consistent with the robustness checks based on CCEMG and MG estimators. On the policy front, promoting technological innovation remains a veritable option to curtailing the devastating impacts of co2pc.
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