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An Exploratory Economic Analysis of Underground Pumped-Storage Hydro Power Plants in Abandoned Coal Mines

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Author Info

  • Madlener, Reinhard

    ()
    (E.ON Energy Research Center, Future Energy Consumer Needs and Behavior (FCN))

  • Specht, Jan Martin

    ()
    (RWTH Aachen University)

Abstract

In Germany, the mitigation of CO2 emissions as well as the nuclear power phase-out are important political goals in the course of the sustainable energy transformation process (so-called “Energiewende”). The reduction in fossil- and nuclear-based energy supply has to be compensated by new renewable energies, especially wind power and photovoltaics. Most of the existing studies find that such an increasing contribution from volatile renewables calls for an intensified use of massive energy storage [1]. Conventional technologies for this purpose are pumped-storage hydro power (PSHP) facilities. Typically, these require a storage reservoir on top of a mountain and another one at the bottom. In Germany, unfortunately, suitable sites are quite rare and the constructional measures often have a negative impact on the landscape and the ecosphere, which often induces public resistance. A possible future solution might be the use of underground PSHP (UPSHP) plants, for example, in closed-down mines. This study constitutes an early attempt to model such plants, in order to assess and better understand the economic viability of such underground UPSHP power plants in closed down coal mines. First, we examine the topic from a technical perspective, which is followed by an economic analysis. In the technical assessment, we analyze the feasibility of building an underground reservoir, installing the pressure pipes in the main shaft and equipping the machine cavern with turbines and pumps. In the economic examination, the expected costs for building a UPSHP are calculated. A rough comparison between the costs of a classic and a UPSHP plant is made that also includes the costs of redesigning and reconstructing the underground reservoir. Based on the techno-economic evaluation, we conclude that under favorable conditions the realization of UPSHP plants seems both technically feasible and economically reasonable. More specifically, an extension of a tube system seems the most promising option. We also find that a PSHP plant in a mine shaft is probably slightly more expensive than a conventional one, an outcome that depends strongly on the feasible head. Also, the significant reduction of the adverse impacts on the landscape and local residents could be an advantage. In addition, the number of potential sites might be quite large compared to those for conventional PSHP plants.

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Bibliographic Info

Paper provided by E.ON Energy Research Center, Future Energy Consumer Needs and Behavior (FCN) in its series FCN Working Papers with number 2/2013.

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Length: 34 pages
Date of creation: Feb 2013
Date of revision:
Handle: RePEc:ris:fcnwpa:2013_002

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Web page: http://www.eonerc.rwth-aachen.de/fcn
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Keywords: Hydro power; pumped storage; coal mining; reservoir engineering; massive energy storage;

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Cited by:
  1. Palmer, Johannes & Sorda, Giovanni & Madlener, Reinhard, 2013. "Modeling the Diffusion of Residential Photovoltaic Systems in Italy: An Agent-based Simulation," FCN Working Papers 9/2013, E.ON Energy Research Center, Future Energy Consumer Needs and Behavior (FCN).
  2. Bruns, Stephan B. & Gross, Christian, 2013. "What if Energy Time Series are not Independent? Implications for Energy-GDP Causality Analysis," FCN Working Papers 10/2013, E.ON Energy Research Center, Future Energy Consumer Needs and Behavior (FCN).
  3. Rohlfs, Wilko & Madlener, Reinhard, 2013. "Optimal Power Generation Investment: Impact of Technology Choices and Existing Portfolios for Deploying Low-Carbon Coal Technologies," FCN Working Papers 12/2013, E.ON Energy Research Center, Future Energy Consumer Needs and Behavior (FCN).
  4. Harmsen - van Hout, Marjolein & Ghosh, Gaurav & Madlener, Reinhard, 2013. "An Evaluation of Attribute Anchoring Bias in a Choice Experimental Setting," FCN Working Papers 6/2013, E.ON Energy Research Center, Future Energy Consumer Needs and Behavior (FCN).
  5. Harmsen - van Hout, Marjolein & Ghosh, Gaurav & Madlener, Reinhard, 2013. "The Impact of Green Framing on Consumers’ Valuations of Energy-Saving Measures," FCN Working Papers 7/2013, E.ON Energy Research Center, Future Energy Consumer Needs and Behavior (FCN).
  6. Rohlfs, Wilko & Madlener, Reinhard, 2013. "Challenges in the Evaluation of Ultra-Long-Lived Projects: Risk Premia for Projects with Eternal Returns or Costs," FCN Working Papers 13/2013, E.ON Energy Research Center, Future Energy Consumer Needs and Behavior (FCN).
  7. Hackbarth, André & Madlener, Reinhard, 2013. "Willingness-to-Pay for Alternative Fuel Vehicle Characteristics: A Stated Choice Study for Germany," FCN Working Papers 20/2013, E.ON Energy Research Center, Future Energy Consumer Needs and Behavior (FCN).
  8. Michelsen , Carl Christian & Madlener, Reinhard, 2013. "Switching from Fossil Fuel to Renewables in Residential Heating Systems: An Empirical Study of Homeowners’ Decisions in Germany," FCN Working Papers 14/2013, E.ON Energy Research Center, Future Energy Consumer Needs and Behavior (FCN).

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