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Salt cavern exergy storage capacity potential of UK massively bedded halites, using Compressed Air Energy Storage (CAES)

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Evans, David, Parkers, Daniel, Dooner, Mark, Williamson, Paul, Williams, John, Busby, Jonathan, He, Wei, Wang, Jihong and Garvey, Seamus (2021) Salt cavern exergy storage capacity potential of UK massively bedded halites, using Compressed Air Energy Storage (CAES). Applied Sciences, 11 . 4728. doi:10.3390/app11114728 ISSN 2076-3417.

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Official URL: http://dx.doi.org/10.3390/app11114728

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Abstract

The increasing integration of large-scale electricity generation from renewable energy sources in the grid requires support through cheap, reliable, and accessible bulk energy storage technologies, delivering large amounts of electricity both quickly and over extended periods. Compressed air energy storage (CAES) represents such a storage option, with three commercial facilities using salt caverns for storage operational in Germany, the US, and Canada, with CAES now being actively considered in many countries. Massively bedded halite deposits exist in the UK and already host, or are considered for, solution-mined underground gas storage (UGS) caverns. We have assessed those with proven UGS potential for CAES purposes, using a tool developed during the EPSRC-funded IMAGES project, equations for which were validated using operational data from the Huntorf CAES plant. From a calculated total theoretical ‘static’ (one-fill) storage capacity exceeding that of UK electricity demand of ≈300 TWh in 2018, filtering of results suggests a minimum of several tens of TWh exergy storage in salt caverns, which when co-located with renewable energy sources, or connected to the grid for off-peak electricity, offers significant storage contributions to support the UK electricity grid and decarbonisation efforts.

Item Type: Journal Article
Subjects: Q Science > QE Geology
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
T Technology > TN Mining engineering. Metallurgy
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Compressed air -- Underground storage , Energy storage, Renewable energy sources, Salt mines and mining
Journal or Publication Title: Applied Sciences
Publisher: MDPI
ISSN: 2076-3417
Official Date: 21 May 2021
Dates:
DateEvent
21 May 2021Published
12 May 2021Accepted
Volume: 11
Article Number: 4728
DOI: 10.3390/app11114728
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 7 June 2021
Date of first compliant Open Access: 8 June 2021
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
EP/K002228/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266

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