In a controversial policy paper, Bachmann et al. (2022) argued back in March 2022 that the economic effects for Germany of a complete immediate stop of energy imports from Russia would be small, between 0.5% and 3% of GDP. Baqaee et al. (2022) even presented 0.3% GDP loss in the case of an...

We develop a dynamic model of strategic investment in a transnational pipeline system. In the absence of international contract enforcement, countries may distort investment in order to increase their bargaining power, resulting in overinvestment in expensive and underinvestment in cheap...

Around the turn of the year 2005/2006, the Russian freezing of natural gas exports to the Ukraine led to a European gas crisis. Using event study technique, we first investigate whether the Russian announcement of suspension of gas deliveries, this suspension itself as well as its withdrawal,...

This paper provides an empirical demonstration for a practical approach of efficiency evaluation against the background of limited data availability in some regulated industries. Here, traditional DEA may result in a lack of discriminatory power when high numbers of variables but only limited...

The liberalisation of the Hungarian electricity and natural gas markets has been completed in 2009. The liberalisation of the electricity market resulted in different competitive positions in the production, the wholesale and the retail trade. The high level of market concentration survived in...

Around the turn of the year 2005/2006, the Russian freezing of natural gas exports to the Ukraine led to a European gas crisis. Using event study techniques, we first investigate whether the Russian suspension of gas deliveries, the announcement of this suspension as well as its withdrawal had...