-ups from knowledge intensive business service (KIBS) firms with persistent R&D investments have a significantly increased … start in the same firm, indicating the importance of inherited related knowledge. The findings suggest that R&D intensive …

innovation. in the sense that research can be directed to either clean or dirty technologies. If dirty technologies are more … technologies. Carbon taxes and research subsidies may nonetheless encourage production and innovation in clean technologies, though …

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 …