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Beyond supplying the current demand for ammonia, methanol, and steel, new applications like aviation fuels, high\u2010temperature heat and seasonal storage are promising. While initial efforts have been made to understand the future of hydrogen in New Zealand, there has been no comprehensive quantification of hydrogen demands. In this study, using systems analysis, we quantify the potential demand for 20 hydrogen applications in the country, including their spatial allocation to each of the 16 regions. We sort these applications using the so\u2010called Clean Hydrogen Ladder concept. The associated database is open source. The results show that New Zealand's total demand for green hydrogen would be around 2.8\u00a0Mt if all technically feasible applications switched to hydrogen. Prioritising the demand for applications in rungs A and B of the Clean Hydrogen Ladder concept, we estimate approximately 0.24 and 0.77\u00a0metric tons, respectively. The findings of this research contribute to the development of a hydrogen strategy and serve as inputs for optimal planning of integrated energy pathways for New Zealand.<\/jats:p>","DOI":"10.1080\/03036758.2024.2365306","type":"journal-article","created":{"date-parts":[[2024,7,16]],"date-time":"2024-07-16T13:00:34Z","timestamp":1721134834000},"page":"833-852","update-policy":"https:\/\/doi.org\/10.1080\/tandf_crossmark_01","source":"Crossref","is-referenced-by-count":8,"title":["How much hydrogen could we need in New Zealand? 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