alexa A Model-based Analysis Of Future Electricity Production From Biogas In Germany
ISSN: 2090-4541

Journal of Fundamentals of Renewable Energy and Applications
Open Access

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5th World Bioenergy Congress and Expo
June 29-30, 2017 Madrid, Spain

D Balussou, R McKenna and W Fichtner
Karlsruhe Institute of Technology, Germany
ScientificTracks Abstracts: J Fundam Renewable Energy Appl
DOI: 10.4172/2090-4541-C1-029
Statement of the Problem: With the development of renewable energy sources in Germany the use of biogas for electricity and heat production has rapidly expanded in the past fifteen years. This expansion has been encouraged by several Federal governmental incentives and in particular by the electricity feed-in-tariffs introduced in the Renewable Energy Sources Act (EEG). Especially agricultural plants valorizing energy crops now constitute almost 80% of total biogas installations. However, volatile energy crops and electricity prices, combined with continuously evolving framework conditions, are a source of uncertainty for German plant operators. In this context, investment decision making for biogas plant projects is a difficult task that requires the development of decision support tools. Methodology & Theoretical Orientation: To this end, a linear optimization model has been developed to analyze mid-term developments up to the year 2030 for German biogas plant capacity. An economically optimal development plan for three main installation types is foreseen at the Federal State level and under various scenarios. Findings: The results highlight the influence of regional biomass potentials, revenues and electricity production costs as well as plant flexibilization and decommissioning. Future capacity expansion should mainly concern small manure plants and biowaste installations rather than agricultural plants which should undergo only modest development. Conclusion & Significance: Based on the model results recommendations for plant operators and policy-makers are formulated. Maintaining current subsidy levels for biowaste and small manure installations appears necessary in order to ensure a sustainable development of German biogas plants. Strategic planning, flexible plant operation and the increased valorization of agricultural residues represent key challenges. The developed model is further transferrable to other countries employing feed-in-tariffs (e.g. France, Italy and United Kingdom). This would contribute to the elaboration of a common European biogas strategy strengthened by the exchange of best technical, regulatory and economic practices.

D Balussou graduated as an Energy and Process Engineer from the Ecole des Mines d’Albi in France. He is currently a PhD candidate at the Chair of Energy Economics of Karlsruhe Institute of Technology (KIT). His work at KIT focuses on the analysis of current and future electricity production from biogas in Germany with the help of simulation and optimization models taking into account various subsidy schemes. His studies resulted in different publications in peer-reviewed journals and conference proceedings.

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