“…The emergence of new technological paradigms offers windows of opportunities for countries and regions to catch up (Perez and Soete, 1988). Several empirical studies in recent EEG literature also confirm the related diversification process in clean technologies (Montresor and Quatraro, 2019;Perruchas et al, 2019;Santoalha and Boschma, 2019;Tanner, 2016Tanner, , 2014van den Berge et al, 2019), providing evidences on how countries and regions can catch up in the recent clean technological paradigm (Mathews, 2013;Perez, 2016Perez, , 2013.…”