“…First, in the literature on green BMs and sustainable BMs, we include the literature on decarbonization, an important topic which, nevertheless, is not explicit in most of this literature [23,32,39], with a few exceptions in the energy sector [25,40]. Second, we focus on SMEs that, in general, have been understudied, except for some case studies showing selection bias toward environmental proactivity [28,41,42]. Third, we search for differences in the degree of incorporation of decarbonization in SMEs' green BMs depending on their size because both the traditional literature on environmental strategy and that on BMs point to different barriers and enablers for the development of environmental strategies and BMs depending on size [43,44].…”