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Determination of the optimal power ratio between electrolysis and renewable energy to investigate the effects on the hydrogen production costs

  • Green hydrogen via renewable powered electrolysis has a high relevance in decarbonization and supply security. Achieving economically competitive hydrogen production costs is a major challenge in times of an energy price crisis. Our objective is to show the economically optimal installed capacity of electrolysers in relation to wind and solar power so swift and credible statements can be made regarding the system design. The ratio between renewable generation and electrolysis power as well as scaling effects, operating behaviour and development of costs are considered. Hydrogen production costs are calculated for four exemplary real PV and wind sites and different ratios of electrolysis to renewable power for the year 2020. The ideal ratio for PV systems is between 14% and 73% and for wind between 3.3% and 143% for low and high full load hours. The lowest hydrogen production costs are identified at 2.53 €/kg for 50 MW wind power and 72 MW electrolysis power. The results provide plant constructors the possibility to create a cost-optimized design via an optimum ratio of electrolysis to renewable capacity. Therefore, the procedures for planning and dimensioning of selected systems can be drastically simplified.

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Metadaten
Author:Andreas Hofrichter, Daniel Rank, Michael HeberlORCiD, Michael SternerORCiDGND
DOI:https://doi.org/10.1016/j.ijhydene.2022.09.263
ISSN:0360-3199
Parent Title (English):International Journal of Hydrogen Energy
Publisher:Elsevier
Document Type:Article
Language:English
Year of first Publication:2023
Release Date:2022/11/09
Volume:48
Issue:5
First Page:1651
Last Page:1663
Note:
Corresponding author: Michael Heberl
Note:
Corrigendum to “Determination of the optimal power ratio between electrolysis and renewable energy to investigate the effects on the hydrogen production costs” [Int J Hydrogen Energy 48 (5) (2023) 1651–1663] - https://doi.org/10.1016/j.ijhydene.2023.03.128
Institutes:Fakultät Elektro- und Informationstechnik
Begutachtungsstatus:peer-reviewed
research focus:Energie und Mobilität
OpenAccess Publikationsweg:Hybrid Open Access - OA-Veröffentlichung in einer Subskriptionszeitschrift/-medium
Corresponding author der OTH Regensburg
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International