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A Kuznets Curve in Environmental Efficiency: An Application on OECD Countries
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- Azad, Md A.S. & Ancev, Tihomir, 2010. "Using ecological indices to measure economic and environmental performance of irrigated agriculture," Ecological Economics, Elsevier, vol. 69(8), pages 1731-1739, June.
- Halkos, George Emm. & Tzeremes, Nickolaos G., 2009. "Exploring the existence of Kuznets curve in countries' environmental efficiency using DEA window analysis," Ecological Economics, Elsevier, vol. 68(7), pages 2168-2176, May.
- Choi, Yongrok & Zhang, Ning & Zhou, P., 2012. "Efficiency and abatement costs of energy-related CO2 emissions in China: A slacks-based efficiency measure," Applied Energy, Elsevier, vol. 98(C), pages 198-208.
- Chia-Nan Wang & Hong-Xuyen Thi Ho & Ming-Hsien Hsueh, 2017. "An Integrated Approach for Estimating the Energy Efficiency of Seventeen Countries," Energies, MDPI, vol. 10(10), pages 1-16, October.
- Zhou, P. & Ang, B.W., 2008. "Linear programming models for measuring economy-wide energy efficiency performance," Energy Policy, Elsevier, vol. 36(8), pages 2901-2906, August.
- Kortelainen, Mika, 2008. "Dynamic environmental performance analysis: A Malmquist index approach," Ecological Economics, Elsevier, vol. 64(4), pages 701-715, February.
- Honma, Satoshi & Ushifusa, Yoshiaki & Taghizadeh-Hesary, Farhad & Okamura, Soyoka & Vandercammee, Lilu, 2024. "Environmental efficiency of Japanese regions before and after the Great East Japan Earthquake," MPRA Paper 120945, University Library of Munich, Germany.
- Shivananda Shetty & Surender Kumar, 2017. "Are voluntary environment programs effective in improving the environmental performance: evidence from polluting Indian Industries," Environmental Economics and Policy Studies, Springer;Society for Environmental Economics and Policy Studies - SEEPS, vol. 19(4), pages 659-676, October.
- Wei, Yigang & Li, Yan & Wu, Meiyu & Li, Yingbo, 2019. "The decomposition of total-factor CO2 emission efficiency of 97 contracting countries in Paris Agreement," Energy Economics, Elsevier, vol. 78(C), pages 365-378.
- Zhang, Shanshan & Lundgren, Tommy & Zhou, Wenchao, 2016. "Energy efficiency in Swedish industry," Energy Economics, Elsevier, vol. 55(C), pages 42-51.
- Zhenbo Zhang & Xiaohua Meng, 2019. "Internet Penetration and the Environmental Kuznets Curve: A Cross-National Analysis," Sustainability, MDPI, vol. 11(5), pages 1-12, March.
- Shushu Li & Yong Ma, 2014. "Urbanization, Economic Development and Environmental Change," Sustainability, MDPI, vol. 6(8), pages 1-19, August.
- Tutulmaz, Onur, 2015. "Environmental Kuznets Curve time series application for Turkey: Why controversial results exist for similar models?," Renewable and Sustainable Energy Reviews, Elsevier, vol. 50(C), pages 73-81.
- Jin, Gang & Shen, Kunrong & Li, Jian, 2020. "Interjurisdiction political competition and green total factor productivity in China: An inverted-U relationship," China Economic Review, Elsevier, vol. 61(C).
- Panagiotis Fotis & Michael Polemis, 2018.
"Sustainable development, environmental policy and renewable energy use: A dynamic panel data approach,"
Sustainable Development, John Wiley & Sons, Ltd., vol. 26(6), pages 726-740, November.
- Fotis, Panagiotis & Polemis, Michael, 2018. "Sustainable development, environmental policy and renewable energy use: A dynamic panel data approach," MPRA Paper 85018, University Library of Munich, Germany.
- Zhou, P. & Ang, B.W. & Poh, K.L., 2006. "Slacks-based efficiency measures for modeling environmental performance," Ecological Economics, Elsevier, vol. 60(1), pages 111-118, November.
- Masayuki Shimizu, 2020. "The relationship between pollution abatement costs and environmental regulation: Evidence from the Chinese industrial sector," Review of Development Economics, Wiley Blackwell, vol. 24(2), pages 668-690, May.
- Sueyoshi, Toshiyuki & Yuan, Yan & Goto, Mika, 2017. "A literature study for DEA applied to energy and environment," Energy Economics, Elsevier, vol. 62(C), pages 104-124.
- Anthony Glass & Karligash Kenjegalieva & Robin Sickles, 2013. "How efficiently do U.S. cities manage roadway congestion?," Journal of Productivity Analysis, Springer, vol. 40(3), pages 407-428, December.
- Rashidi, Kamran & Farzipoor Saen, Reza, 2015. "Measuring eco-efficiency based on green indicators and potentials in energy saving and undesirable output abatement," Energy Economics, Elsevier, vol. 50(C), pages 18-26.
- Zhou, P. & Ang, B.W. & Han, J.Y., 2010. "Total factor carbon emission performance: A Malmquist index analysis," Energy Economics, Elsevier, vol. 32(1), pages 194-201, January.
- Enrico Maria Mosconi & Andrea Colantoni & Filippo Gambella & Eva Cudlinová & Luca Salvati & Jesús Rodrigo-Comino, 2020. "Revisiting the Environmental Kuznets Curve: The Spatial Interaction between Economy and Territory," Economies, MDPI, vol. 8(3), pages 1-20, September.
- Ozcan, Burcu, 2013. "The nexus between carbon emissions, energy consumption and economic growth in Middle East countries: A panel data analysis," Energy Policy, Elsevier, vol. 62(C), pages 1138-1147.
- Chiu, Ching-Ren & Liou, Je-Liang & Wu, Pei-Ing & Fang, Chen-Ling, 2012. "Decomposition of the environmental inefficiency of the meta-frontier with undesirable output," Energy Economics, Elsevier, vol. 34(5), pages 1392-1399.
- Zaim, Osman, 2004. "Measuring environmental performance of state manufacturing through changes in pollution intensities: a DEA framework," Ecological Economics, Elsevier, vol. 48(1), pages 37-47, January.
- Halkos, George & Tzeremes, Nickolaos, 2009. "Exploring the effect of countries’ economic prosperity on their biodiversity performance," MPRA Paper 32102, University Library of Munich, Germany.
- Taskin, Fatma & Zaim, Osman, 2000. "Searching for a Kuznets curve in environmental efficiency using kernel estimation," Economics Letters, Elsevier, vol. 68(2), pages 217-223, August.
- Mazzanti, Massimiliano & Musolesi, Antonio & Zoboli, Roberto, 2006.
"A Bayesian Approach to the Estimation of Environmental Kuznets Curves for CO2 Emissions,"
Climate Change Modelling and Policy Working Papers
12057, Fondazione Eni Enrico Mattei (FEEM).
- Massimiliano Mazzanti & Antonio Musolesi & Roberto Zoboli, 2006. "A Bayesian Approach to the Estimation of Environmental Kuznets Curves for CO2 Emissions," Working Papers 2006.121, Fondazione Eni Enrico Mattei.
- Kumar, Surender & Khanna, Madhu, 2009.
"Measurement of environmental efficiency and productivity: a cross-country analysis,"
Environment and Development Economics, Cambridge University Press, vol. 14(4), pages 473-495, August.
- Kumar, Surender & Khanna, Madhu, 2005. "Measurement of environmental efficiency and productivity: A cross country analysis," Working Papers 05/29, National Institute of Public Finance and Policy.
- Surender Kumar, 2007. "Measurement of Environmental Efficiency and Productivity: A Cross Country Analysis," Working Papers id:1004, eSocialSciences.
- Kumar Mandal, Sabuj & Madheswaran, S., 2010.
"Environmental efficiency of the Indian cement industry: An interstate analysis,"
Energy Policy, Elsevier, vol. 38(2), pages 1108-1118, February.
- Sabuj Kumar Mandal & S Madheswaran, 2009. "Environmental Efficiency of the Indian Cement Industry: An Interstate Analysis," Working Papers 227, Institute for Social and Economic Change, Bangalore.
- Cuesta, Rafael A. & Lovell, C.A. Knox & Zofío, José L., 2009.
"Environmental efficiency measurement with translog distance functions: A parametric approach,"
Ecological Economics, Elsevier, vol. 68(8-9), pages 2232-2242, June.
- Cuesta, Rafael A. & Knox, C.A. & Zofío, José Luis, 2007. "Environmental Efficiency Measurement with Translog Distance Functions: A Parametric Approach," Working Papers in Economic Theory 2007/02, Universidad Autónoma de Madrid (Spain), Department of Economic Analysis (Economic Theory and Economic History).
- Massimiliano Mazzanti & Antonio Musolesi, 2009.
"Carbon Kuznets Curves: Long-run Structural Dynamics and Policy Events,"
Working Papers
2009.87, Fondazione Eni Enrico Mattei.
- Mazzanti, Massimiliano & Musolesi, Antonio, 2009. "Carbon Kuznets Curves: Long-run Structural Dynamics and Policy Events," Sustainable Development Papers 55286, Fondazione Eni Enrico Mattei (FEEM).
- Xiangyu Teng & Liang Chun Lu & Yung-ho Chiu, 2018. "Considering Emission Treatment for Energy-Efficiency Improvement and Air Pollution Reduction in China’s Industrial Sector," Sustainability, MDPI, vol. 10(11), pages 1-18, November.
- Abou-Ali, Hala & Abdelfattah, Yasmine M., 2013.
"Integrated paradigm for sustainable development: A panel data study,"
Economic Modelling, Elsevier, vol. 30(C), pages 334-342.
- Hala Abou-Ali & Yasmine M. Abdelfattah, 2011. "Integrated Paradigm for Sustainable Development: A Panel Data Study," Working Papers 646, Economic Research Forum, revised 10 Jan 2011.
- Li, Mingquan & Wang, Qi, 2014. "International environmental efficiency differences and their determinants," Energy, Elsevier, vol. 78(C), pages 411-420.
- Lise, Wietze, 2006. "Decomposition of CO2 emissions over 1980-2003 in Turkey," Energy Policy, Elsevier, vol. 34(14), pages 1841-1852, September.
- Badunenko, Oleg & Galeotti, Marzio & Hunt, Lester C., 2023. "Better to grow or better to improve? Measuring environmental efficiency in OECD countries with a stochastic environmental Kuznets frontier (SEKF)," Energy Economics, Elsevier, vol. 121(C).
- Xiangyu Teng & Danting Lu & Yung-ho Chiu, 2019. "Emission Reduction and Energy Performance Improvement with Different Regional Treatment Intensity in China," Energies, MDPI, vol. 12(2), pages 1-18, January.
- Soushi Suzuki & Peter Nijkamp, 2021. "High urban population density as a facilitator of energy–environment–economy performance–development of an autoconfiguration target model in data envelopment analysis," Asia-Pacific Journal of Regional Science, Springer, vol. 5(1), pages 261-287, February.
- Oleg Badunenko & Marzio Galeotti & Lester C. Hunt, 2021.
"Better to grow or better to improve? Measuring environmental efficiency in OECD countries with a Stochastic Environmental Kuznets Frontier,"
Working Papers
2021.28, Fondazione Eni Enrico Mattei.
- Badunenko, Oleg & Galeotti, Marzio & Hunt, Lester C., 2021. "Better to grow or better to improve? Measuring environmental efficiency in OECD countries with a Stochastic Environmental Kuznets Frontier," FEEM Working Papers 316226, Fondazione Eni Enrico Mattei (FEEM).
- Yavuz Selman DUMAN & Adnan KASMAN, 2017. "The Role of International Trade and Urbanization on Environmental Technical Efficiency in EU Member and Candidate Countries," Ege Academic Review, Ege University Faculty of Economics and Administrative Sciences, vol. 17(4), pages 481-491.
- Sueyoshi, Toshiyuki & Goto, Mika & Ueno, Takahiro, 2010. "Performance analysis of US coal-fired power plants by measuring three DEA efficiencies," Energy Policy, Elsevier, vol. 38(4), pages 1675-1688, April.
- Kumar, Surender & Gupta, Sreekant, 2004. "Resource use efficiency of US electricity generating plants during the SO2 trading regime: A distance function approach," Working Papers 04/17, National Institute of Public Finance and Policy.
- Satoshi Honma, 2015. "Does international trade improve environmental efficiency? An application of a super slacks-based measure of efficiency," Journal of Economic Structures, Springer;Pan-Pacific Association of Input-Output Studies (PAPAIOS), vol. 4(1), pages 1-12, December.
- Halkos, George & Bampatsou, Christina, 2017. "Technical efficiency, productivity change and environmental degradation," MPRA Paper 77176, University Library of Munich, Germany.
- Hui Li & Robert P. Berrens & Therese Grijalva, 2007. "Economic growth and environmental quality: a meta-analysis of environmental Kuznets curve studies," Economics Bulletin, AccessEcon, vol. 17(5), pages 1-11.
- Salvati Luca, 2013. "Land Quality, Development and Space: Does Scale Matter?," European Spatial Research and Policy, Sciendo, vol. 20(2), pages 99-112, December.
- Philippe Barla & Sergio Perelman, 2005. "Sulphur emissions and productivity growth in industrialised countries," Annals of Public and Cooperative Economics, Wiley Blackwell, vol. 76(2), pages 275-300, June.
- repec:npf:wpaper:17 is not listed on IDEAS
- Béchir Ben Lahouel & Younes Ben Zaied & Guo-liang Yang & Maria-Giuseppina Bruna & Yaoyao Song, 2022. "A non-parametric decomposition of the environmental performance-income relationship: evidence from a non-linear model," Annals of Operations Research, Springer, vol. 313(1), pages 525-558, June.
- Halkos, George E. & Tzeremes, Nickolaos G., 2013.
"Economic growth and environmental efficiency: Evidence from US regions,"
Economics Letters, Elsevier, vol. 120(1), pages 48-52.
- Halkos, George & Tzeremes, Nickolaos, 2012. "Economic growth and environmental efficiency: Evidence from U.S. regions," MPRA Paper 42675, University Library of Munich, Germany.
- Yuanying Chi & Yangmei Xu & Xu Wang & Feng Jin & Jialin Li, 2021. "A Win–Win Scenario for Agricultural Green Development and Farmers’ Agricultural Income: An Empirical Analysis Based on the EKC Hypothesis," Sustainability, MDPI, vol. 13(15), pages 1-21, July.
- Honma, Satoshi, 2012. "Environmental and economic efficiencies in the Asia-Pacific region," MPRA Paper 43361, University Library of Munich, Germany.
- Morakinyo Adetutu & Anthony Glass & Karligash Kenjegalieva & Robin Sickles, 2015. "The effects of efficiency and TFP growth on pollution in Europe: a multistage spatial analysis," Journal of Productivity Analysis, Springer, vol. 43(3), pages 307-326, June.
- Xu, Mengmeng & Lin, Boqiang, 2022. "Energy efficiency gains from distortion mitigation: A perspective on the metallurgical industry," Resources Policy, Elsevier, vol. 77(C).
- Managi, Shunsuke & Kaneko, Shinji, 2009. "Environmental performance and returns to pollution abatement in China," Ecological Economics, Elsevier, vol. 68(6), pages 1643-1651, April.
- Madhu Khanna & Surender Kumar, 2011. "Corporate Environmental Management and Environmental Efficiency," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 50(2), pages 227-242, October.
- Halkos, George & Tzeremes, Nickolaos, 2011. "Does the Kyoto Protocol Agreement matters? An environmental efficiency analysis," MPRA Paper 30652, University Library of Munich, Germany.
- M. A. Samad Azad & Tihomir Ancev, 2016. "Economics of Salinity Effects from Irrigated Cotton: An Efficiency Analysis," Water Economics and Policy (WEP), World Scientific Publishing Co. Pte. Ltd., vol. 2(01), pages 1-24, March.
- Osman Zaim & Rolf Färe & Shawna Grosskopf, 2001. "An Economic Approach to Achievement and Improvement Indexes," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 56(1), pages 91-118, October.
- OA Carboni & P. Russu, 2014. "Measuring Environmental and Economic Efficiency in Italy: an Application of the Malmquist-DEA and Grey Forecasting Model," Working Paper CRENoS 201401, Centre for North South Economic Research, University of Cagliari and Sassari, Sardinia.
- George E. Halkos & Shunsuke Managi, 2017. "Measuring the Effect of Economic Growth on Countries’ Environmental Efficiency: A Conditional Directional Distance Function Approach," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 68(3), pages 753-775, November.
- repec:ebl:ecbull:v:17:y:2007:i:5:p:1-11 is not listed on IDEAS
- George Halkos & Nickolaos Tzeremes, 2014. "Measuring the effect of Kyoto protocol agreement on countries’ environmental efficiency in CO 2 emissions: an application of conditional full frontiers," Journal of Productivity Analysis, Springer, vol. 41(3), pages 367-382, June.
- Jena, Pradyot Ranjan, 2009. "Estimating environmental efficiency and Kuznets curve for India," 2009 Conference, August 16-22, 2009, Beijing, China 51302, International Association of Agricultural Economists.
- Lee, Sanghoon & Oh, Dae-Won, 2015. "Economic growth and the environment in China: Empirical evidence using prefecture level data," China Economic Review, Elsevier, vol. 36(C), pages 73-85.
- Tsolas, Ioannis E., 2011. "Performance assessment of mining operations using nonparametric production analysis: A bootstrapping approach in DEA," Resources Policy, Elsevier, vol. 36(2), pages 159-167, June.
- Watanabe, Michio & Tanaka, Katsuya, 2007. "Efficiency analysis of Chinese industry: A directional distance function approach," Energy Policy, Elsevier, vol. 35(12), pages 6323-6331, December.
- David Maradan & Anatoli Vassiliev, 2005. "Marginal Costs of Carbon Dioxide Abatement: Empirical Evidence from Cross-Country Analysis," Swiss Journal of Economics and Statistics (SJES), Swiss Society of Economics and Statistics (SSES), vol. 141(III), pages 377-410, September.
- repec:ind:nipfwp:17 is not listed on IDEAS
- Honma, Satoshi, 2014. "Does international trade improve environmental efficiency? An application of a super slacks-based measurement of efficiency," MPRA Paper 56950, University Library of Munich, Germany.
- Salnykov Mykhaylo & Zelenyuk Valentin, 2005. "Estimation of environmental efficiencies of economies and shadow prices of pollutants in countries in transition," EERC Working Paper Series 05-06e, EERC Research Network, Russia and CIS.
- Auci, Sabrina & Castelli, Annalisa, 2011. "Pollution and economic growth: a maximum likelihood estimation of environmental Kuznets curve," MPRA Paper 53441, University Library of Munich, Germany.
- Wietze LISE, 2005. "Decomposition of CO2 Emissions over 1980–2003 in Turkey," Working Papers 2005.24, Fondazione Eni Enrico Mattei.
- Oliviero Carboni & Paolo Russu, 2015. "Assessing Regional Wellbeing in Italy: An Application of Malmquist–DEA and Self-organizing Map Neural Clustering," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 122(3), pages 677-700, July.
- Pascalau, Razvan & Qirjo, Dhimitri, 2017. "TTIP and the Environmental Kuznets Curve," MPRA Paper 80192, University Library of Munich, Germany.
- George E. Halkos & Michael L. Polemis, 2017. "Does Financial Development Affect Environmental Degradation? Evidence from the OECD Countries," Business Strategy and the Environment, Wiley Blackwell, vol. 26(8), pages 1162-1180, December.
- Halkos, George & Tzeremes, Nickolaos, 2011. "The effect of energy consumption on countries’ economic efficiency: a conditional robust non parametric approach," MPRA Paper 28692, University Library of Munich, Germany.
- George Vlontzos & Spyros Niavis & Panos Pardalos, 2017. "Testing for Environmental Kuznets Curve in the EU Agricultural Sector through an Eco-(in)Efficiency Index," Energies, MDPI, vol. 10(12), pages 1-15, December.
- Massimiliano Mazzanti & Antonio Musolesi, 2011. "Income and time related effects in EKC," Working Papers 201105, University of Ferrara, Department of Economics.
- Yin, Pengzhen & Sun, Jiasen & Chu, Junfei & Liang, Liang, 2016. "Evaluating the environmental efficiency of a two-stage system with undesired outputs by a DEA approach: An interest preference perspectiveAuthor-Name: Wu, Jie," European Journal of Operational Research, Elsevier, vol. 254(3), pages 1047-1062.
- Massimiliano Mazzanti & Antonio Musolesi, 2010. "Carbon Abatement Leaders and Laggards Non Parametric Analyses of Policy Oriented Kuznets Curves," Working Papers 2010.149, Fondazione Eni Enrico Mattei.
- Managi, Shunsuke & Jena, Pradyot Ranjan, 2008. "Environmental productivity and Kuznets curve in India," Ecological Economics, Elsevier, vol. 65(2), pages 432-440, April.
- Ke-Liang Wang & Li-Li Ding & Jian-Min Wang & Mian Yang, 2020. "Analysis of provincial total-factor air pollution efficiency in China by using context-dependent slacks-based measure considering undesirable outputs," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 104(2), pages 1899-1921, November.
- Doganay, Seda Meyveci & Sayek, Selin & Taskin, Fatma, 2014. "Is environmental efficiency trade inducing or trade hindering?," Energy Economics, Elsevier, vol. 44(C), pages 340-349.
- Soytas, Ugur & Sari, Ramazan, 2009. "Energy consumption, economic growth, and carbon emissions: Challenges faced by an EU candidate member," Ecological Economics, Elsevier, vol. 68(6), pages 1667-1675, April.
- Fare, Rolf & Grosskopf, Shawna & Zaim, Osman, 2002. "Hyperbolic efficiency and return to the dollar," European Journal of Operational Research, Elsevier, vol. 136(3), pages 671-679, February.
- Halkos, George E. & Tzeremes, Nickolaos G., 2013.
"A conditional directional distance function approach for measuring regional environmental efficiency: Evidence from UK regions,"
European Journal of Operational Research, Elsevier, vol. 227(1), pages 182-189.
- Halkos, George & Tzeremes, Nickolaos, 2012. "A conditional directional distance function approach for measuring regional environmental efficiency: Evidence from the UK regions," MPRA Paper 38147, University Library of Munich, Germany.
- Zhou, P. & Ang, B.W. & Poh, K.L., 2008. "A survey of data envelopment analysis in energy and environmental studies," European Journal of Operational Research, Elsevier, vol. 189(1), pages 1-18, August.
- Lozano, Sebastián & Gutiérrez, Ester, 2008. "Non-parametric frontier approach to modelling the relationships among population, GDP, energy consumption and CO2 emissions," Ecological Economics, Elsevier, vol. 66(4), pages 687-699, July.
- Halkos, George & Tzeremes, Nickolaos, 2012. "Regional economic growth and environmental efficiency in greenhouse emissions: A conditional directional distance function approach," MPRA Paper 40015, University Library of Munich, Germany.
- Peroni, Chiara, 2012. "Environmental efficiency indices: towards a new approach to green-growth accounting," MPRA Paper 38671, University Library of Munich, Germany, revised 27 Apr 2012.
- Halkos, George & Polemis, Michael, 2016. "The good, the bad and the ugly? Balancing environmental and economic impacts towards efficiency," MPRA Paper 72132, University Library of Munich, Germany.
- Fang Zhang & Hong Fang & Junjie Wu & Damian Ward, 2016. "Environmental Efficiency Analysis of Listed Cement Enterprises in China," Sustainability, MDPI, vol. 8(5), pages 1-19, May.
- Soytas, Ugur & Sari, Ramazan & Ewing, Bradley T., 2007. "Energy consumption, income, and carbon emissions in the United States," Ecological Economics, Elsevier, vol. 62(3-4), pages 482-489, May.
- Guo, Xiao-Dan & Zhu, Lei & Fan, Ying & Xie, Bai-Chen, 2011. "Evaluation of potential reductions in carbon emissions in Chinese provinces based on environmental DEA," Energy Policy, Elsevier, vol. 39(5), pages 2352-2360, May.
- Wen-Chi Yang & Wen-Min Lu & Alagu Perumal Ramasamy, 2021. "International Environmental Efficiency Trends and the Impact of the Paris Agreement," Energies, MDPI, vol. 14(15), pages 1-16, July.