Cited by 140Hybrid Renewable Energy SystemsIntegrated Energy Systems OptimizationAmmonia Synthesis and Nitrogen Reduction

The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.

Optimising renewable generation configurations of off-grid green ammonia production systems considering Haber-Bosch flexibility

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Abstract

Green ammonia has received increasing interest for its potential as an energy carrier in the international trade of renewable power. This paper considers the factors that contribute to producing cost-competitive green ammonia from an exporter’s perspective. These factors include renewable resource quality across potential sites, operating modes for off-grid plants, and seasonal complementarity with trade buyers. The study applies a mixed-integer programming model and uses Australia as a case study because of its excellent solar and wind resources, and the potential for synergy between Southern Hemisphere supply and Northern Hemisphere demand. Although renewable resources are unevenly distributed across Australia and present distinct diurnal and seasonal variability, modelling shows that most of the pre-identified hydrogen hubs in each state and territory of Australia can produce cost-competitive green ammonia providing the electrolysis and Haber-Bosch processes are partially flexible to cope with the variability of renewables. Flexible operation reduces energy curtailment and leads to lower storage capacity requirements using batteries or hydrogen storage, which would otherwise increase system costs. In addition, an optimised combination of wind and solar can reduce the magnitude of storage required. Providing that a partially flexible Haber Bosch plant is commercially available, the modelling shows a levelised cost of ammonia (LCOA) of AU$756/tonne and AU$659/tonne in 2025 and 2030, respectively. Based on these results, green ammonia would be cost-competitive with grey ammonia in 2030, given a feedstock natural gas price higher than AU$14/MBtu. For green ammonia to be cost-competitive with grey ammonia, assuming a lower gas price of AU$6/MBtu, a carbon price would need to be in place of at least AU$123/tonne. Given that there is a greater demand for energy in winter concurrent with lower solar power production, there may be opportunities for solar-based Southern Hemisphere suppliers to supply the major industrial regions, most of which are located in the Northern Hemisphere.

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Crossref · 10.1016/j.enconman.2023.116790

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Show all 37 references

Research works printed but not linked: 2

  1. IRENA, Global hydrogen trade to meet the 1.5°C climate goal: Part II – Technology review of hydrogen carriers, Tech. rep., International Renewable Energy Agency, Abu Dhabi (2022). URL https://irena.org/-/media/Files/IRENA/Agency/Publication/2022/Apr/IRENA_ Global_Trade_Hydrogen_2022.pdf.
  2. Aurecon, 2019 Costs and Technical Parameter Review (2019). URL https://www.aemo.com.au/-/media/Files/Electricity/NEM/Planning_and_Forec asting/Inputs-Assumptions-Methodologies/2019/Aurecon-2019-Cost-and-Technical -Parameters-Review-Draft-Report.pdf.

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Metadata

Authors
Wang, C., Walsh, S. D. C., Longden, T., Palmer, G., Lutalo, I., & Dargaville, R.
Affiliations
  • The University of Melbourne (AU)
  • Monash University (AU)
  • Australian National University (AU)
Corresponding author
Wang, Changlong
Venue
Energy Conversion and Management
Publisher
Elsevier BV
Published
2023-03
Volume
280
Pages
116790
ISSN
0196-8904 (ISSN-L)
OpenAlex
W4321381945
Cited by
140
References
37
Citations by year
2026: 48 · 2025: 48 · 2024: 30 · 2023: 14
FWCI
6.45
Type
journal article
Language
en
Open access
Locations
  • Energy Conversion and Management (publishedVersion, cc-by-nc-nd)
  • EarthArXiv (California Digital Library) (submittedVersion, cc-by)
Funders
Monash University
Topics
  • Physical Sciences › Energy › Energy Engineering and Power Technology › Hybrid Renewable Energy Systems
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Integrated Energy Systems Optimization
  • Physical Sciences › Chemical Engineering › Catalysis › Ammonia Synthesis and Nitrogen Reduction
Keywords
green ammonia, renewable energy integration, electrolysis, hydrogen hubs, energy storage requirements, seasonal and diurnal variability, energy curtailment, carbon pricing, Australia

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