Florian Zimmermann

An analysis of long-term impacts of demand response on investments in thermal power plants and generation adequacy

In liberalized energy markets, the issue of generation adequacy gains more and more in importance. Especially demand response is regarded as a crucial measure to handle supply and demand imbalances caused by inflexible renewable energy resources (RES) power production. However, the influence of demand response on wholesale electricity prices has not been sufficiently analyzed up to now.

Price-based versus load-smoothing pumpec storage operation: Long-term impacts on generation adequacy

With rising shares of fluctuating renewable energy generation, the role of electricity storage becomes increasingly important. However, European pumped storage plants (PSPs) are currently confronted with economic challenges and their potential for smoothing the residual load curve is consequently not fully exploited. In this paper, the long-term effects of load-smoothing and the typical price-based PSP operation are compared with an emphasis on the development of the wholesale electricity prices and the generation adequacy. The study is conducted using an agent-based simulation model of the day-ahead electricity market that has been extended by a methodology to heuristically dispatch the PSPs in Germany. The results show, that the contribution load-smoothing PSP operation can make to improving generation adequacy is rather small. Putting a strategic reserve in place reduces the differences between price-based and load-smoothing PSP operation even further. Moreover, load-smoothing PSP operation goes along with slightly increased wholesale electricity prices as compared to price-based operation.

Zukunftsfähige Designoptionen für den deutschen Strommarkt : ein Vergleich des Energy-only-Marktes mit Kapazitätsmärkten

Die vorliegende Untersuchung setzt sich intensiv mit Weiterentwicklungen des deutschen Strommarktdesigns auf Basis fundierter wissenschaftlicher Erkenntnisse auseinander. Dazu wird mithilfe eines agentenbasierten Strommarktmodells zunachst die Funktionsfahigkeit des EOM mit und ohne Strategische Reserve untersucht. Anschliesend werden die Auswirkungen der Einfuhrung eines zentralen und dezentralen Kapazitatsmarkts analysiert.