An assessment of electrolyser portfolio for offshore hydrogen production considering its key properties – efficiency, ramp rate and capacity

E. Andreae*, S. You, H. W. Bindner, M. Petersen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Abstract

Wind-electrolyser systems that produce green hydrogen – including hydrogen-generating offshore energy hubs – have received a lot of attention. The electrolyser capacity in such systems can be arranged in different configurations by varying the location setup of the electrolysers. The setup influences not only the dynamic performance of electrolysers but also the system economics. This paper analyses the differences in the dynamic performance of electrolysers in a centralised and decentralised setup from a technical and economic perspective, when the target is to produce as much renewable hydrogen as possible using today’s electrolyser technology. The economic effects of scaling for various wind turbines under different wind conditions are incorporated in the analysis. Differences in electrolyser efficiency, start-stop, ramping, operation range and scale are modelled, and the models are applied to a case study depicting an offshore energy hub. Using a representative wind profile of fluctuating conditions and considering identical electrolyser ramping and efficiency for the same turbine configuration, the analysis shows that the single electrolyser solution (centralised), where the electrolyser is sited at a substation, gives a better levelized cost of hydrogen than the alternative setup (decentralised) with multiple in-turbine electrolysers.
Original languageEnglish
Title of host publicationEERA DeepWind conference 2023
Number of pages10
Volume2626
PublisherIOP Publishing
Publication date2023
Article number012013
DOIs
Publication statusPublished - 2023
EventEERA DeepWind Conference 2023 - Trondheim, Norway
Duration: 18 Jan 202320 Jan 2023

Conference

ConferenceEERA DeepWind Conference 2023
Country/TerritoryNorway
CityTrondheim
Period18/01/202320/01/2023
SeriesJournal of Physics: Conference Series
ISSN1742-6588

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