Utility-scale subsurface hydrogen storage: UK perspectives and technology |
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Authors: | Richard L. Wallace Zuansi Cai Hexin Zhang Keni Zhang Chaobin Guo |
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Affiliation: | 1. School of Engineering and Built Environment, Edinburgh Napier University, Edinburgh, EH10 5DT, Scotland, UK;2. Institute of Groundwater and Earth Sciences, Jinan University, Guangzhou, China;3. Chinese Academy of Geological Sciences, Beijing, 100037, China |
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Abstract: | To reduce effects from anthropogenically induced climate change renewable energy systems are being implemented at an accelerated rate, the UKs wind capacity alone is set to more than double by 2030. However, the intermittency associated with these systems presents a challenge to their effective implementation. This is estimated to lead to the curtailment of up to 7.72 TWh by 2030. Through electrolysis, this surplus can be stored chemically in the form of hydrogen to contribute to the 15 TWh required by 2050. The low density of hydrogen constrains above ground utility-scale storage systems and thus leads to exploration of the subsurface.This literature review describes the challenges and barriers, geological criteria and geographical availability of all utility-scale hydrogen storage technologies with a unique UK perspective. This is furthered by discussion of current research (primarily numerical models), with particular attention to porous storage as geographical constraints will necessitate its deployment within the UK. Finally, avenues of research which could further current understanding are discussed. |
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Keywords: | Subsurface hydrogen storage Deep aquifer Depleted oil/gas deposits Salt cavern United Kingdom |
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