Article (Scientific journals)
The Impact of Hydrogeological Features on the Performance of Underground Pumped-Storage Hydropower (UPSH)
Pujades, Estanis; Poulain, Angélique; Orban, Philippe et al.
2021In Applied Sciences
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The original paper can be found on: https://doi.org/10.3390/app11041760


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Keywords :
energy storage; groundwater; hydropower; renewable energy; environmental impacts; efficiency; numerical modelling; old mine
Abstract :
[en] Underground pumped storage hydropower (UPSH) is an attractive opportunity to manage the production of electricity from renewable energy sources in flat regions, which will contribute to the expansion of their use and, thus, to mitigating the emissions of greenhouse gasses (GHGs) in the atmosphere. A logical option to construct future UPSH plants consists of taking advantage of existing underground cavities excavated with mining purposes. However, mines are not water-proofed, and there will be an underground water exchange between the surrounding geological medium and the UPSH plants, which can impact their efficiency and the quality of nearby water bodies. Underground water exchanges depend on hydrogeological features, such as the hydrogeological properties and the groundwater characteristics and behavior. In this paper, we numerically investigated how the hydraulic conductivity (K) of the surrounding underground medium and the elevation of the piezometric head determined the underground water exchanges and their associated consequences. The results indicated that the efficiency and environmental impacts on surface water bodies became worse in transmissive geological media with a high elevation of the piezometric head. However, the expected environmental impacts on the underground medium increased as the piezometric head became deeper. This assessment complements previous ones developed in the same field and contributes to the definition of (1) screening strategies for selecting the best places to construct future UPSH plants and (2) design criteria to improve their efficiency and minimize their impacts.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Pujades, Estanis;  Institute of Environmental Assessment aSevero Ochoa Excellence Center of the Spanish Council for Scientific Research (CSIC), Barcelona > Institute of Environmental Assessment and Water Research (IDAEA)
Poulain, Angélique;  Université d'Avignon > UMR EMMAH
Orban, Philippe  ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Goderniaux, Pascal;  Université de Mons - UMONS > Géologie et Géologie appliquée
Dassargues, Alain  ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Language :
English
Title :
The Impact of Hydrogeological Features on the Performance of Underground Pumped-Storage Hydropower (UPSH)
Publication date :
17 February 2021
Journal title :
Applied Sciences
eISSN :
2076-3417
Publisher :
MDPI, Basel, Switzerland
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Région Wallonne SMARTWATER
Funders :
IDAEA-CSIC is a Centre of Excellence Severo Ochoa, Spanish Ministry of Science and Innovation, Project CEX2018-000794-S
Public Service of Wallonia–Department of Energy and Sustainable Building through the Smart-water project
EP was also funded by Barcelona City Council through the Award for Scientific Research into Urban Challenges in the City of Barcelona 2020 (20S08708)
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