“…Thus, the density of firms, regional demand, and regional proximity, among others, have been factors that have had a positive impact on innovation in firms (Cooke et al, ; Fritsch, ; Oerlemans & Meeus, ). However, geographic and regional factors, which have been widely investigated in the literature of innovation, have been poorly studied in the literature of eco‐innovation (Antonioli, Borghesi, & Mazzanti, ; Cainelli et al, ; Ghisetti & Quatraro, , ; Leoncini, Montresor, & Rentocchini, ; Zubeltzu‐Jaka et al, ). Although eco‐innovation has important singularities with regard to innovation, for example, eco‐innovation might generate a “win–win” set‐up characterized by the compatibility of economic development and sustainable economy, or the effect double externality, or regulatory push/pull effect (e.g., Costantini et al, ; Doran & Ryan, ), and so on, the regional perspective may be useful for creating a better understanding of the eco‐innovations and serve as a basis for the analysis.…”