... that contribute to their success or hinder progress. Design/methodology/approach The research uses data envelopment analysis (DEA) to measure the efficiency of renewable energy adoption. Input variables include labor force, gross domestic product and export-to-import ratio, whereas output variables...

...-Obaidan and Scully (1991) ; they found NOCs to be less efficient and less profitable than their private counterparts. Eller et al. (2011) also used both DEA and stochastic frontier analysis in their analysis. Using a three-year panel data (2002-2004), they found that the extent of government...

.../approach The proposed method of this study develops nonparametric data envelopment analysis (DEA) with the consideration of geographic classification, size and type of company. At the first stage, a DEA model is used to estimate the relative technical efficiency and productivity change of these companies...