The Interplay of Urban Energy Policy and Sociotechnical Transitions: The

The cities of Graz in Austria and Freiburg in Germany have been perceived as ecolo-gical model cities since the late 1980s.This is shown by various international awards, press coverage and many visitors from other municipal administrations. Both cities have been well known for their attempts to bring about transitions towards more sustainable and low-carbon energy systems. The comparison of Graz and Freiburg over a period of two decades enables us to study how differing contexts, actor con-stellations and historic developments shape the transformation of energy systems towards greater sustainability. It is argued that understanding the role of cities for energy transitions requires a detailed examination of the coupled dynamics of socio-technical interactions across the levels of niches, regimes and landscapes on the one hand, and multilevel systems of governance on the other. At these intersections new, although spatially confined, socio-technical constellations of sustainable energy pro-vision may emerge and be stabilised. Nevertheless, empirical evidence shows that it is misleading to conclude that true socio-technical transitions are taking place in these cities, even though a number of foundations for long-term change processes have been laid