This paper deals with a conceptual framework allowing the analysis of long-run qualitative change in the energy system. The energy sector seems to be particularly appropriate for the analysis of qualitative change due to the following reasons: The energy sector is relevant for the development of...

Empirical research in organizational ecology has mainly focused on analyzing founding and mortality rates using life history data of the organizations. We try to extend this approach in our study in a number of ways. In contrast to most empirical studies in organizational ecology, we chose a...