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Open AccessArticle

Energy Use Efficiency Past-to-Future Evaluation: An International Comparison

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Departments of Industrial Engineering and Management, National Kaohsiung University of Sciences and Technology, Kaohsiung 80778, Taiwan
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Departments of Business Administration, National Kaohsiung University of Sciences and Technology, Kaohsiung 80778, Taiwan
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Author to whom correspondence should be addressed.
Energies 2019, 12(19), 3804; https://doi.org/10.3390/en12193804
Received: 19 September 2019 / Revised: 5 October 2019 / Accepted: 6 October 2019 / Published: 8 October 2019
(This article belongs to the Special Issue Energy Use Efficiency)
Despite the many benefits that energy consumption brings to the economy, consuming energy also leads nations to expend more resources on environmental pollution. Therefore, energy efficiency has been proposed as a solution to improve national economic competitiveness and sustainability. However, the growth in energy demand is accelerating while policy efforts to boost energy efficiency are slowing. To solve this problem, the efficiency gains in countries where energy consumption efficiency is of the greatest concern such as China, India, the United States, and Europe, especially, emerging economies, is central. Additionally, governments must take greater policy actions. Therefore, this paper studied 25 countries from Asia, the Americas, and Europe to develop a method combining the grey method (GM) and data envelopment analysis (DEA) slack-based measure model (SMB) to measure and forecast the energy efficiency, so that detailed energy efficiency evaluation can be made from the past to the future; moreover, this method can be extended to more countries around the world. The results of this study reveal that European countries have a higher energy efficiency than countries in Americas (except the United States) and Asian countries. Our findings also show that an excess of total energy consumption is the main reason causing the energy inefficiency in most countries. This study contributes to policymaking and strategy makers by sharing the understanding of the status of energy efficiency and providing insights for the future. View Full-Text
Keywords: energy efficiency; data envelopment analysis; super-SBM; grey model; energy consumption energy efficiency; data envelopment analysis; super-SBM; grey model; energy consumption
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MDPI and ACS Style

Wang, C.-N.; Nguyen, T.-D.; Yu, M.-C. Energy Use Efficiency Past-to-Future Evaluation: An International Comparison. Energies 2019, 12, 3804.

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