The purpose of this paper is to illuminate the geographical diffusion of photovoltaic installations in Germany quantitatively and to test if preexisting photovoltaic systems stimulate further installations nearby; thus we investigate to which extent knowledge flows depend on geographic...

The photovoltaic industry acts as a key force in the transition toward a sustainable energy production model. Only a niche market a few years ago, photovoltaic panels and installations are now becoming a mainstream electricity provider. As a highly dynamic, multi-technology and globally...

We examine how different renewable energy support policies affect innovation in solar and wind power technologies. The analysis is conducted using policy and patent data for a large sample of 194 countries and territories. The policy data allows distinguishing two dimensions of regulation, i.e....

The interpretation and measurement of the innovation performance of territorial units represent well established research areas. Nevertheless the way this issue is usually addressed raises several questions. In present paper we are dealing with two of these problematic fields: the level of...