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Structural Interpretation of Vector Autoregressions with Incomplete Identification: Revisiting the Role of Oil Supply and Demand Shocks
American Economic Review,
Traditional approaches to structural vector autoregressions (VARs) can be viewed as special cases of Bayesian inference arising from very strong prior beliefs. These methods can be generalized with a less restrictive formulation that incorporates uncertainty about the identifying assumptions themselves. We use this approach to revisit the importance of shocks to oil supply and demand. Supply disruptions turn out to be a bigger factor in historical oil price movements and inventory accumulation a smaller factor than implied by earlier estimates. Supply shocks lead to a reduction in global economic activity after a significant lag, whereas shocks to oil demand do not.
Liberalization of Electricity Markets in Selected European Countries
Diskussionsbeiträge des Europäischen Instituts für Internationale Wirtschaftsbeziehungen (EIIW), Bergische Universität Wuppertal, Nr. 124,
We look into liberalization issues in the context of the EU Electricity Liberalization. Taking a look at principal issues reveals that the Community Directive 96/92/EC does not really take into account the interdependencies of energy markets. Moreover, third party access is not effectively enforced, particularly not in Germany, where mergers between a major electricity company and the dominant gas company have raised particular issues. Electricity liberalization in Scandinavia is working relatively well. EU accession countries are considered potential electricity exporters in the long run as full restructuring will drive down both energy intensities and electricity intensities. Russia would be wise to quickly become a member country of WTO, not in the least to gain access to Western Europe’s electricity market; the role of Russia so far has been neglected in the discussion of electricity liberalization. Excess capacities in EU-27 can be expected in the medium term. There is considerable doubt that politicians – often with ambitious goals in the field of environmental policy – will allow for a pan-European liberalization of electricity. We also take a closer look at regulatory policy issues.