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Fichtner, Stephan ; Meyr, Herbert

Biogas plant optimization by increasing its exibility considering uncertain revenues

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URN: urn:nbn:de:bsz:100-opus-16460
URL: http://opus.uni-hohenheim.de/volltexte/2019/1646/

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SWD-Schlagw÷rter: Biogas , Investitionsentscheidung
Institut: Institut für Interorganisational Management & Performance
DDC-Sachgruppe: Wirtschaft
Dokumentart: ResearchPaper
Schriftenreihe: Hohenheim discussion papers in business, economics and social sciences
Bandnummer: 2019,07
Sprache: Englisch
Erstellungsjahr: 2019
Publikationsdatum: 24.07.2019
Lizenz: Hohenheimer Lizenzvertrag Veröffentlichungsvertrag mit der Universitätsbibliothek Hohenheim
Kurzfassung auf Englisch: Increasing shares of volatile energy resources like wind and solar energy will require exibly schedulable energy resources to compensate for their volatility. Biogas plants can produce their energy exibly and on demand, if their design is adjusted adequately. By doing so, the biogas plant operator has the opportunity to generate more earnings by producing and selling electricity in higher price periods. In order to achieve a exibly schedulable biogas plant, the design of this plant has to be adjusted to decouple the biogas and electricity production. Therefore, biogas storage possibilities and additional electrical capacity are necessary. The investment decision about the size of the biogas storage and the additional electrical capacity depends on the uctuation of energy market prices and the availability of governmental subsidies. This work presents an approach supporting investment decisions to increase the exibility of a biogas plant by installing gas storages and additional electrical capacities under consideration of revenues out of direct marketing at the day-ahead market. In order to support the strategic, long-term investment decisions, an operative plant schedule for the future, considering different plant designs given as investment strategies, using a mixed-integer linear programming (MILP) model in an uncertain environment is optimized. The different designs can be evaluated by calculating the net present value (NPV). Moreover, an analysis concerning current dynamics and uncertainties within spot market prices is executed. Furthermore, the in uences concerning the variation of spot market prices compared to the influence of governmental subsidies, in particular, the exibility premium, are revealed by computational results for a fictional case example, which is based on a biogas plant in southern Germany. In addition, the robustness of the determined solution is analyzed with respect to uncertainties.

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