TY - JOUR
T1 - Combined heat and power from hydrothermal geothermal resources in Germany
T2 - An assessment of the potential
AU - Eyerer, S.
AU - Schifflechner, C.
AU - Hofbauer, S.
AU - Bauer, W.
AU - Wieland, C.
AU - Spliethoff, H.
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2020/3
Y1 - 2020/3
N2 - This study investigates the potential of hydrothermal geothermal energy for combined heat and power (CHP) generation in Germany. Based on the theoretical potential of hydrothermal heat in place, the technical and economic potential is determined with a review and an analysis of existing geothermal plants. To this end, the thermodynamic and economic performance of operating power plants is analyzed and models for the efficiency and the production costs are developed. Based on this analysis, a technical potential of 12.2PWh el and 16.7PWh th as well as an economic potential of 9.1PWhel and 12.5PWhth is determined. In order to derive an annual contribution from the economic potential, the regeneration of the resource is taken into account. Considering a sustainable exploitation rate, an annual economic potential of 9.1TWhel/a and 12.5TWhth/a is derived. This corresponds to a share of 1.51% of the gross electricity demand and a share of 1.48% of the demand for space heating and domestic hot water. This analysis provides a profound review about the existing geothermal power plants and their thermodynamic and economic performance. Furthermore, the assessment of the geothermal potential in Germany is necessary for political decision making, particular with a view towards future adjustments of the feed-in tariffs defined by the Renewable Energy Act.
AB - This study investigates the potential of hydrothermal geothermal energy for combined heat and power (CHP) generation in Germany. Based on the theoretical potential of hydrothermal heat in place, the technical and economic potential is determined with a review and an analysis of existing geothermal plants. To this end, the thermodynamic and economic performance of operating power plants is analyzed and models for the efficiency and the production costs are developed. Based on this analysis, a technical potential of 12.2PWh el and 16.7PWh th as well as an economic potential of 9.1PWhel and 12.5PWhth is determined. In order to derive an annual contribution from the economic potential, the regeneration of the resource is taken into account. Considering a sustainable exploitation rate, an annual economic potential of 9.1TWhel/a and 12.5TWhth/a is derived. This corresponds to a share of 1.51% of the gross electricity demand and a share of 1.48% of the demand for space heating and domestic hot water. This analysis provides a profound review about the existing geothermal power plants and their thermodynamic and economic performance. Furthermore, the assessment of the geothermal potential in Germany is necessary for political decision making, particular with a view towards future adjustments of the feed-in tariffs defined by the Renewable Energy Act.
KW - Binary power plants
KW - Combined heat and power generation
KW - Economic potential
KW - Geothermal energy
KW - Levelized costs of electricity
KW - Technical potential
UR - http://www.scopus.com/inward/record.url?scp=85076475002&partnerID=8YFLogxK
U2 - 10.1016/j.rser.2019.109661
DO - 10.1016/j.rser.2019.109661
M3 - Article
AN - SCOPUS:85076475002
SN - 1364-0321
VL - 120
JO - Renewable and Sustainable Energy Reviews
JF - Renewable and Sustainable Energy Reviews
M1 - 109661
ER -