Seit dem PISA-Schock und dem Erscheinen der Expertise Zur Entwicklung nationaler Bildungsstandards wird die Standardisierungsdiskussion in allen Fachdidaktiken gefuehrt. Schulische Bildung soll demzufolge nicht mehr allein ueber den Input, sondern vor allem ueber den Output gesteuert werden. Die...

After a period of hibernation, the development of pumpedâ€hydro storage plants in Germany regains momentum. Motivated by an ever increasing share of intermittent renewable generation, a variety of energy players considers new projects, which could increase the available capacity by up to 60%...

With the introduction of incentive regulation in many network industries, different approaches how to remunerate invested capital have been used. Under incentive regulation, many regula-tors remunerate the regulated asset base with a weighted average cost of capital (WACC) based on a pre-defined...

In principle, portfolio optimization in electricity markets can make use of the standard mean-variance model going back to Markowitz. Yet a key restriction in most electricity markets is the limited liquidity. Therefore the standard model has to be adapted to cope with limited liquidity. An...

Natural gas storages may be valuated by applying real options theory. However it is crucial, not to ignore that most evolving gas spot markets, like the German spot market, lack of liquidity. In this context, considering storage operators as price takers does not account for interdependencies of...

Optimal capacity allocation for investments in electricity generation assets can be deterministically derived by comparing technology specific long-term and short-term marginal costs. In an uncertain market environment, Mean-Variance Portfolio (MVP) theory provides a consistent framework to...

The electricity generation mix of many European countries is strongly dominated by fossil fuelled power plants. Given that CO2-emissions are responsible for a major part of the anthropogenic greenhouse effect, emission trading has been introduced in the EU in 2005. Under the European emissions...

Power systems with high shares of wind and solar power have to balance their intermittent nature. Pumpedâ€hydro storage plants can provide the required flexibility, while thermal backup plants offer an alternative. This paper proposes a model based on peakâ€loadâ€pricing theory to...

This paper links Hotelling's theory, in recent literature applied to an emission constrained environment, with the classical capacity planning framework to describe portfolio timeâ€paths in electricity production. Emission targets are considered by a ceiling on the stock of pollution. We...

This paper explores the economic implications of different contract durations in markets for on-line (primary and secondary) reserve capacity in Germany with the crucial feature of separate markets for spot energy and reserve capacity provision. The analysis is based on an equilibrium model...