Assessment of the Energy Efficiency Improvement of Twenty-Five Countries: A DEA Approach

Lai-Wang Wang, Ke-Duc Le and Thi-Duong Nguyen
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Lai-Wang Wang: Department of Industrial Engineering and Management, National Kaohsiung University Sciences and Technology, Kaohsiung 80778, Taiwan
Ke-Duc Le: Department of Industrial Engineering and Management, National Kaohsiung University Sciences and Technology, Kaohsiung 80778, Taiwan
Thi-Duong Nguyen: Department of Industrial Engineering and Management, National Kaohsiung University Sciences and Technology, Kaohsiung 80778, Taiwan

Energies, 2019, vol. 12, issue 8, 1-14

Abstract: Since energy efficiency and energy improvement are viewed as two of the most important keys of sustainable management, research on energy has become popular and captured much more attention. The current paper aimed to measure the energy efficiency of 25 countries with carbon dioxide (CO 2 ) emissions as well as their energy efficiency improvement. First, a data envelopment analysis (DEA) slack-based model (SBM) was employed to obtain efficiency scores. Second, the Malmquist Productivity Index (MPI) was then used to examine the improvement during the period of 2010–2017. Findings of this study showed that developed countries had a more balanced development between gross domestic product (GDP) growth and CO 2 emissions by using the same inputs as developing countries. Additionally, the findings revealed that India and China, being the two largest population countries, achieved improved energy intensity during 2010–2017; however; their energy consumption and CO 2 emissions continued to grow, leading them to being the two worst countries in terms of energy efficiency.

Keywords: energy efficiency; energy efficiency improvement; data envelopment analysis; malmquist productivity index (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (12)

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