Apergis, NicholasAye, Goodness ChiomaBarros, Carlos PestanaGupta, RanganWanke, Peter2015-08-032015-08-032015-09Apergis, N, Aye, GC, Barros, CP, Gupta, R & Wanke, P 2015, 'Energy efficiency of selected OECD countries : a slacks based model with undesirable outputs', Energy Economics, vol. 51, pp. 45-53.0140-9883 (print)1873-6181 (online)10.1016/j.eneco.2015.05.022http://hdl.handle.net/2263/49217This paper presents an efficiency assessment of selected OECD countries using a Slacks Based Model with undesirable or bad outputs (SBM-Undesirable). In this research, SBM-Undesirable is used first in a two-stage approach to assess the relative efficiency of OECD countries using the most frequent indicators adopted by the literature on energy efficiency. Besides, in the second stage, GLMM-MCMC methods are combined with SBM Undesirable results as part of an attempt to produce a model for energy performance with effective predictive ability. The results reveal different impacts of contextual variables, such as economic blocks and capital-labor ratio, on energy efficiency levels.en© 2015 Elsevier B.V. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Energy Economics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Energy Economics, vol. 51, pp. 45-53, 2015. doi : 10.1016/j.eneco.2015.05.022.EnergyTwo-stage GLMM-MCMCOrganisation for Economic Co-operation and Development (OECD)OECD countriesSlacks Based Model with undesirable or bad outputs (SBM-Undesirable)Generalized linear mixed models (GLMM)Markov chain Monte Carlo (MCMC)Postprint Article