Energy security has become a popular catch phrase, both in the scientific arena as well as in the political discussion. Yet, in general the applied concepts of energy security are rather vague. This paper sheds some light on concepts and indicators of energy security. First, we conceptually...

We investigate optimal abatement strategies for cumulative and interacting pollutants. We show that different decay rates can cause non-monotonic behavior in the optimal paths of emissions, the aggregate level of pollution, and even the relative optimal price for emissions. This contrasts...

This paper discusses fundamental aspects of the European emissions trading system which has been implemented in January 2005. We show how institutional features set by the EU Commission and the required subsidiary decisions by the respective Member States are potentially in conflict with the...

This paper analyses the macroeconomic costs of environmental regulation in European energy markets on the basis of existing macroeconomic simulation studies. The analysis comprises the European emssions trading scheme, energy taxes, measures in the transport sector and the promotion of renewable...