“…In recent years the applications of DEA have increased in field of environmental and energy economics, in areas, for example; energy performance [56][57][58][59][60][61][62], energy savings [63][64][65][66][67][68][69], and energy efficiency [70][71][72][73][74][75][76][77][78][79], Shi et al [80][81][82][83][84][85][86][87][88][89]. In this regard, various DEA models were employed in different industries and sectors such as non-radial DEA, bootstrap DEA, CCR and BCC models, DEA window analysis, non-radial and constant returns to scale (CRS), DEA frontier, (VRS), directional distance function (DDF), DEA-Malmquist, slacks-based DEA, DEA-bargaining game, DEA-MBP model, network DEA, stochastic DEA, stochastic network DEA, double-bootstrap DEA, dynamic environmental DEA, stochastic frontier analysis (SFA), radial stochastic DEA, network range adjusted environmental DEA, fuzzy dynamic network-DEA, constant returns to scale (CRTS), variable returns to scale (VRTS), DEA discriminant analysis (DEA-DA), fuzzy network slack-based measure (SBM) model, interval DEA-CCR, super-efficient DEA (SE-DEA) and other DEA models.…”