knowledge spillovers, especially those occurring at the national level. Wind and solar technologies exhibit distinct innovation … innovative activity with a special emphasis on the role of knowledge spillovers. We investigate two major renewable energy … technologies or sectors (inter-sectoral spillovers), or at the international level. We find that innovation is strongly driven by …

. Though concentrating solar power is receiving growing interest, innovation studies so far have explored innovative activity … more activity - a pattern closely resembling the R&D support path. R&D and innovation are concentrated in few high …-tech countries - such as the U.S. or Germany. Large CSP potential is not a sufficient condition for innovation, only developed …