Im Mai 2014 prognostizierte OECD-Generalsekretär Gurría: "Deutschland bekommt ein Problem mit Altersarmut". Die Sorge um wachsende Altersarmut hat in Deutschland längst die Politik erreicht. Bereits im Frühjahr 2008 warnten die beiden ostdeutschen Minister aus Sachsen-Anhalt und...

Many developing countries around the world apply progressive water tariffs, often structured in the form of discretely increasing block tariffs (IBTs). These tariffs have been criticized in the welfare economic literature due to their perceived inefficiency: many of the prices charged under IBTs...

In this paper, we analyze the technical efficiency of CO2 reduction potentials of German power and heat plants, using a non-parametric sequential Data Envelopment Analysis. We apply a metafrontier framework to evaluate plant-level efficiencies in the transformation of inputs into desirable...

Long-term contracts are an important element of all economic activity and, thus, critical for understanding modern economic structures. The natural gas industry provides particular insights into the functioning and dynamics of long-term contracts and industry structures, in a sector that is...