Article révisé par les pairs
Résumé : A significant change in trends regarding energy prices (in particular oil) has taken place in 2003 at the beginning of the Iraq War. It has revealed a very strong tension between oil prices on the one hand and the relationship between global oil supply and demand on the other. The strong growth rates of emerging economies up to 2008 have generated a very sharp increase in oil prices. The temporary economic recession of 2008-2009 has resulted in turn into a significant decrease of oil prices, down to a level which remained, however, twice as high as that of early 2003. With the economy recovering from the recession, it is highly probable that energy prices will continue to increase and that Europe will be confronted with high energy prices in the coming decades. Against this general background, two scenarios have been elaborated which differ mainly by the time of occurrence of oil peaking.11Oil peaking (or Peak Oil) is a term for the time when the rate of global oil production reaches its final maximum, changing from the past upwards trends to the inevitable future declining trends. Oil peaking means an abrupt disruption of the balance between oil supply and demand and therefore a sharp increase of oil price. The differences between the scenario hypotheses are therefore differences of context in relation to exogenous factors. Policies are also considered in the scenarios, but they are not at the forefront and their impact is considered as limited in relation to that of exogenous factors.The first scenario " Europe in a context of high energy price" assumes that the process of oil peaking will not take place before 2030, but that oil price increase will nevertheless be sustained and substantial until then. Numerous adjustments will have to be made in the economy and their territorial impacts will be significant (less polycentricity, more compact cities, decline of the importance of road and air transport). The second scenario " Europe after oil production peaking" assumes that oil production will peak around the mid-2010s (followed by gas production peaking around 2025), despite significant investments to increase production. In a context of steadily growing oil and gas demand, Europe will be confronted with serious economic difficulties. The territorial impacts will be different from those suggested by the first scenario, with stronger pressure put on rural areas and a loss of attractiveness of large cities related to increasing unemployment and social tensions. In both scenarios, the countries of central and eastern Europe will be more severely hit by the new energy context.The scenarios were elaborated in 2005 and slightly reviewed in 2009 in order to take account of the impacts of the economic recession in Europe and of the growing concerns about climate change. © 2010 Elsevier Ltd.