Abstract
We present results of two model based scenario analysis focussing on the future German power sector which is characterized by a rising share of renewable energies and an associated higher demand for flexibility. Case study 1 is based on a general comparison between a decentrally and a centrally orientated electricity system. The research question of case study 2 is whether flexibility should be centrally balanced by a national market-based dispatch or dispatched in a decentralized manner within regional balancing areas. The combined results of these two case studies offer the possibility to show the differences between a decentralized and a centralized electricity system regarding the dispatch of generation, storage and flexibility options as well as resulting effects on variable costs, CO2 emissions, grid usage and RE integration. Decentralization as control strategy leads to higher variable generation costs due to more expensive generation and less efficient flexibility options that come into the market, while the majority of demand and supply still needs a transmission grid for balancing.
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Notes
- 1.
Project title “Erhöhung der Transparenz über den Bedarf zum Ausbau der Strom-Übertragungsnetze”, project term: 2013–2015, funded within the BMBF reserach programm “Sozial-ökologische Forschung zum Themenschwerpunkt Umwelt- und gesellschaftsverträgliche Transformation des Energiesystems”.
- 2.
Project title “Dezentral und zentral gesteuertes Energiemanagement auf Verteilnetzebene zur Systemintegration erneuerbarer Energien”, project term: 2013–2015, funded within the BMWi reserach programm “Förderung von Forschung und Entwicklung im Bereich erneuerbare Energien”.
- 3.
Project title “Einbindung des Wärme- und Kältesektors in das Strommarktmodell PowerFlex zur Analyse sektorübergreifender Effekte auf Klimaschutzziele und EE-Integration”, project term 2014–2016, funded by Federal Ministry for Economic Affairs and Energy.
- 4.
The enlargement of the electricity market is a second factor favoring RE integration and reducing the supply of backup power plants.
- 5.
There are more power lines which operate at their maximum capacity compared to the reference scenario which is an indicator for possible bottlenecks and further need for grid extension. On the other hand, some bottlenecks of the scenario B2024 disappeared.
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Acknowledgements
We thank the Federal Ministry of Education and Research and the Federal Ministry for Economic Affairs and Energy for funding the two research projects and E-Fect and OFFIS for excellent cooperation.
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Koch, M. et al. (2017). Dispatch of Flexibility Options, Grid Infrastructure and Integration of Renewable Energies Within a Decentralized Electricity System. In: Bertsch, V., Fichtner, W., Heuveline, V., Leibfried, T. (eds) Advances in Energy System Optimization. Trends in Mathematics. Birkhäuser, Cham. https://doi.org/10.1007/978-3-319-51795-7_5
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