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Assessing the contribution of simultaneous heat and power generation from geothermal plants in off-grid municipalities

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  • Weinand, Jann Michael
  • McKenna, Russell
  • Kleinebrahm, Max
  • Mainzer, Kai

Abstract

A growing number of German municipalities are striving for energy autonomy. Geothermal plants are increasingly constructed in municipalities in order to exploit the high hydrothermal potential. This paper analyses the potential contribution of simultaneous geothermal power and heat generation in German municipalities to achieving energy autonomy. A linear regression estimates the achievable hydrothermal temperatures and the required drilling depths. Technical restrictions and cost estimations for geothermal plants are implemented within an existing linear optimisation model for municipal energy systems. Novel modelling approaches, such as optimisation with variable drilling depths, are developed. The new approach is validated with data from existing geothermal plants in Germany, demonstrating a Root Mean Squared Error of about 15%. Eleven scenarios show that achieving energy autonomy is associated with at least 4% additional costs, compared to scenarios without it. The crucial role of geothermal plants in providing base load heat and power to achieve energy autonomy is demonstrated. The importance of simultaneous modelling of electricity and heat generation in geothermal plants is also evident, as district heating plants reduce the costs, especially in municipalities with high hydrothermal potential. Further work should focus on the optimal spatial scale of the system boundaries and the impact of the temporal resolution of the analysis on the costs for achieving energy autonomy.

Suggested Citation

  • Weinand, Jann Michael & McKenna, Russell & Kleinebrahm, Max & Mainzer, Kai, 2019. "Assessing the contribution of simultaneous heat and power generation from geothermal plants in off-grid municipalities," Applied Energy, Elsevier, vol. 255(C).
    • Handle: RePEc:eee:appene:v:255:y:2019:i:c:s0306261919315119
    DOI: 10.1016/j.apenergy.2019.113824
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    Citations

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    Cited by:

    1. Claudio Alimonti & Fabio Vitali & Davide Scrocca, 2023. "Reuse of Oil Wells in Geothermal District Heating Networks: A Sustainable Opportunity for Cities of the Future," Energies, MDPI, vol. 17(1), pages 1-20, December.
    2. Østergaard, P.A. & Lund, H. & Thellufsen, J.Z. & Sorknæs, P. & Mathiesen, B.V., 2022. "Review and validation of EnergyPLAN," Renewable and Sustainable Energy Reviews, Elsevier, vol. 168(C).
    3. Vaccari, Marco & Pannocchia, Gabriele & Tognotti, Leonardo & Paci, Marco, 2023. "Rigorous simulation of geothermal power plants to evaluate environmental performance of alternative configurations," Renewable Energy, Elsevier, vol. 207(C), pages 471-483.
    4. Romanov, D. & Leiss, B., 2022. "Geothermal energy at different depths for district heating and cooling of existing and future building stock," Renewable and Sustainable Energy Reviews, Elsevier, vol. 167(C).
    5. Haji Molla Ali Tork, Mohammad Hossein & Houshfar, Ehsan & Ashjaee, Mehdi, 2024. "Integrating geothermal energy and a solar chimney to maximize renewable energy production: An analytical investigation of a novel hybrid system," Renewable Energy, Elsevier, vol. 230(C).
    6. Qiu, Lihua & He, Li & Kang, Yu & Liang, Dongzhe, 2022. "Assessment of the potential of enhanced geothermal systems in Asia under the impact of global warming," Renewable Energy, Elsevier, vol. 194(C), pages 636-646.
    7. Jann Michael Weinand & Maximilian Hoffmann & Jan Gopfert & Tom Terlouw & Julian Schonau & Patrick Kuckertz & Russell McKenna & Leander Kotzur & Jochen Lin{ss}en & Detlef Stolten, 2022. "Global LCOEs of decentralized off-grid renewable energy systems," Papers 2212.12742, arXiv.org, revised Mar 2023.
    8. Weinand, Jann Michael & Scheller, Fabian & McKenna, Russell, 2020. "Reviewing energy system modelling of decentralized energy autonomy," Energy, Elsevier, vol. 203(C).
    9. Ma, Z.D. & Jia, G.S. & Cui, X. & Xia, Z.H. & Zhang, Y.P. & Jin, L.W., 2020. "Analysis on variations of ground temperature field and thermal radius caused by ground heat exchanger crossing an aquifer layer," Applied Energy, Elsevier, vol. 276(C).
    10. Kachirayil, Febin & Weinand, Jann Michael & Scheller, Fabian & McKenna, Russell, 2022. "Reviewing local and integrated energy system models: insights into flexibility and robustness challenges," Applied Energy, Elsevier, vol. 324(C).
    11. Jann Michael Weinand, 2020. "Reviewing Municipal Energy System Planning in a Bibliometric Analysis: Evolution of the Research Field between 1991 and 2019," Energies, MDPI, vol. 13(6), pages 1-18, March.
    12. McGookin, Connor & Ó Gallachóir, Brian & Byrne, Edmond, 2021. "An innovative approach for estimating energy demand and supply to inform local energy transitions," Energy, Elsevier, vol. 229(C).
    13. Weinand, Jann & Ried, Sabrina & Kleinebrahm, Max & McKenna, Russell & Fichtner, Wolf, 2020. "Identification of potential off-grid municipalities with 100% renewable energy supply," Working Paper Series in Production and Energy 40, Karlsruhe Institute of Technology (KIT), Institute for Industrial Production (IIP).
    14. Kleinebrahm, Max & Weinand, Jann Michael & Naber, Elias & McKenna, Russell & Ardone, Armin, 2023. "Analysing municipal energy system transformations in line with national greenhouse gas reduction strategies," Applied Energy, Elsevier, vol. 332(C).
    15. Schifflechner, Christopher & Dawo, Fabian & Eyerer, Sebastian & Wieland, Christoph & Spliethoff, Hartmut, 2020. "Thermodynamic comparison of direct supercritical CO2 and indirect brine-ORC concepts for geothermal combined heat and power generation," Renewable Energy, Elsevier, vol. 161(C), pages 1292-1302.

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