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 …

knowledge, namely post-entry experience, pre-entry experience, and knowledge acquired by innovative activity. Therefore, a … approach that links instrumental variable estimation with the Cox regression. The main results are that all three knowledge …