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

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

Open access
Wang, Changlong, Walsh, Stuart D.C., Longden, Thomas, Palmer, Graham, Lutalo, Israel, Dargaville, Roger·2023·Energy Conversion and Management

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.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.enconman.2023.116790

Cites

38 of 38 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Production of e-Fuels necessitates monumental build-out of new infrastructure for renewable electricity generation, potentially large-scale CO2 capture facilities and pipeline networks, and advanced electrolyzer plants.

    “Beyond the fuel itself, the production of e-Fuels necessitates a monumental build-out of new infrastructure for renewable electricity generation [25,382] (far exceeding current capacities), potentially large-scale CO 2 capture facilities and pipeline networks, and advanced electrolyzer plants [19,66].”

    From Biofuels, E-Fuels, and Waste-Derived Fuels: Advances, Challenges, and Future Directions (2025) · cites this paper as [66]

    The Introduction and Background (p. 6) says replacing current fossil-fuel ammonia would require 1,750 TWh of renewable electricity—about seven times Australia’s current annual electricity generation. The Results (p. 19) also quantify substantial wind and solar capacity for one green-ammonia replacement scenario. These passages support a major renewable-generation build-out for green ammonia, but do not establish the claim for e-fuels generally. The CO2-capture and pipeline portion has different citations in the citing sentence. (LLM, conf=0.84)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 3

  1. [15][15] M. H. Ali Khan, R. Daiyan, Z. Han, M. Hablutzel, N. Haque, R. Amal, I. MacGill, Designing optimal integrated electricity supply configurations for renewable hydrogen generation in australia, iScience 24 (6) (2021) 102539. 608 609 610 611 612 - URL https://www.sciencedirect.com/science/article/pii/S2589004221005071 -
  2. [22][22] IRENA, Global hydrogen trade to meet the 1.5 C climate goal: Part II - Technology review 634 of hydrogen carriers, Tech. rep., International Renewable Energy Agency, Abu Dhabi (2022). 635 11. URL https://irena.org/-/media/Files/IRENA/Agency/Publication/2022/Apr/IRENA\_ 636 Global\_Trade\_Hydrogen\_2022.pdf 637 -
  3. [66][66] Aurecon, 2019 Costs and Technical Parameter Review (2019). 786 URL https://www.aemo.com.au/-/media/Files/Electricity/NEM/Planning\_and\_Forec 787 asting/Inputs-Assumptions-Methodologies/2019/Aurecon-2019-Cost-and-Technical 788 -Parameters-Review-Draft-Report.pdf 789 -

Cited by

Sorted by citations

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

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review