Catching up in clean energy technologies: a patent analysis

How we can accelerate the diffusion of new clean energy technologies worldwide is a highly relevant topic for energy and climate policies, as well as industrial policies. We trace the time lag between the introduction and the diffusion of breakthroughs in solar photovoltaic technology and wind power technology. Our results show that both domestic knowledge base and organizational proximity to the country introducing breakthroughs, help latecomer countries catch up by actively innovating in these technologies on their own. Moreover, we find that there are more opportunities for latecomer countries with stronger domestic knowledge base to catch up in solar photovoltaic technology than wind power technology. The results of this paper provide systematic evidence of the technology-sensitive catching-up process in the clean energy technological paradigm.