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Renewable and Nonrenewable Energy Consumption, Economic Growth, and Emissions: International Evidence

Thai-Ha Le, Youngho Chang, and Donghyun Park

Year: 2020
Volume: Volume 41
Number: Number 2
DOI: 10.5547/01956574.41.2.thle
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Abstract:
This study aims to reexamine how energy consumption interacts with economic growth and emissions using a panel data of a global sample consisting of 102 countries, from 1996 to 2012. The effects of renewable energy and nonrenewable energy sources are separately examined. The consumption of both renewable and nonrenewable energy appears to have contributed significantly to the level of income across countries, implying that promoting renewable energy benefits economic development. The empirical evidence suggests that the use of non-renewable energy consumption significantly raised the level of emissions across different income groups of countries. On the other hand, our findings suggest that the use of renewable energy sources helped tackle emissions in developed countries but not in developing countries. The success of developed countries in controlling emissions through renewable energy has significant policy implications for developing countries.



Energy R&D Investments and Emissions Abatement Policy

Di Yin and Youngho Chang

Year: 2020
Volume: Volume 41
Number: Number 6
DOI: 10.5547/01956574.41.6.dyin
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Abstract:
The study examines the interactions of the energy R&D investments and the CO2 abatement policy using an endogenous energy R&D climate-economy model. Energy R&D investments affect the carbon emissions directly through efficiency improvements and indirectly by changing the comparative advantages of resources. This study considers the R&D investments in energy efficiency and low-carbon technology and explores how energy R&D investments accelerate the energy transition from fossil fuels to low-carbon technology. Three policies of carbon abatements are considered, namely, the optimal policy, the 2 �C policy, and the 1.5 �C policy. From the perspectives of benefits and costs, the optimal policy leads to the least abatement costs compared to the other two abatement policies. This study indicates that the more restrictive the abatement policy is, the more severe economic damage is caused in the short run, but more economic welfare is gained in the long run. Keywords: Energy R&D investments, Emissions abatement policy, Energy efficiency, Backstop technology, Energy substitution, Cost-benefit analysis, Climate change



Governance, Environmental Vulnerability, and PM2.5 Concentrations: International Evidence

Thai-Ha Le, Youngho Chang, and Donghyun Park

Year: 2021
Volume: Volume 42
Number: Number 6
DOI: 10.5547/01956574.42.6.thle
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Abstract:
We extend the EKC framework to examine the role of governance quality and environmental vulnerability in PM2.5 concentrations using a global panel dataset of 128 countries between 2000 and 2014. The results show that governance and education reduce PM2.5 concentrations while environmental vulnerability increases the concentrations. Promoting good governance and education as well as reducing environmental vulnerability can thus contribute to cleaner air. We find qualitatively similar results for the sub-sample of high-income countries, but governance has relatively weaker or insignificant effects for the sub-samples of upper-middle-income and lower-middle-and-low-income countries. High-income countries have strong institutional frameworks that facilitate enforcement of environmental regulations, which are conducive for protecting air quality, whereas other countries have relatively weak institutional capacity. This suggests a need for substantial economic, technological, and financial support from the international community for strengthening the environmental institutional capacity of developing countries.





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