Harmonised life-cycle indicators of nuclear-based hydrogen
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Date
2021-08-18
Publication Type
Journal Article
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Abstract
When comparing the life-cycle environmental performance of hydrogen energy systems, significant concerns arise due to potential methodological inconsistencies between case studies. In this regard, protocols for harmonised life cycle assessment (LCA) of hydrogen energy systems are currently available to mitigate these concerns. These protocols have already been applied to conventional hydrogen from steam methane reforming as well as to a large number of both fossil and renewable hydrogen options, allowing robust comparisons between them. However, harmonised life-cycle indicators of nuclear-based hydrogen options are not yet available in the literature. This study fills this gap by using the recently developed software GreenH2armony® to calculate the harmonised carbon, energy and acidification footprints of nuclear-based hydrogen produced through different pathways (viz., low-temperature electrolysis, high-temperature electrolysis, and thermochemical cycles). Overall, the harmonised case studies of nuclear-based hydrogen show a generally good performance in terms of carbon footprint and acidification, but an unfavourable performance in terms of non-renewable energy footprint.
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published
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Journal / series
Volume
46 (57)
Pages / Article No.
29724 - 29731
Publisher
Elsevier
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Edition / version
Methods
Software
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Subject
Acidification; Carbon footprint; Energy footprint; High-temperature electrolysis; Life cycle assessment; Thermochemical cycle