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Empowering Safe and Sustainable Hydrogen Energy Systems: Challenges, Innovations

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Energy Sustainability".

Deadline for manuscript submissions: 15 January 2026 | Viewed by 1478

Special Issue Editor


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Guest Editor
School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, NSW, Australia
Interests: hydrogen energy; renewables; safety; sustainability; infrastructure; technology; research; decarbonization; transportation; fuel cells; policy; socio-economics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The proposed Special Issue explores the area of diverse, safe, and sustainable hydrogen energy systems. As the world transitions towards renewable energy sources to mitigate climate change and foster energy security, hydrogen emerges as a promising vector. However, achieving its full potential necessitates addressing various challenges encompassing safety, sustainability, infrastructure development, and technological advancements. This Special Issue endeavours to gather cutting-edge research, insightful perspectives, and innovative solutions from diverse stakeholders to advance our understanding and accelerate the deployment of hydrogen energy systems globally.

Hydrogen, predicted as the future fuel, holds immense promise in decarbonizing industries, transportation, and power generation. However, unlocking its potential requires addressing critical issues surrounding safety and sustainability. As Guest Editors of this Special Issue, we are thrilled to invite researchers, engineers, policymakers, and industry experts to contribute their expertise towards elucidating the challenges and opportunities in enabling safe and sustainable hydrogen energy. Through this collaborative effort, we aim to foster knowledge exchange, spur innovation, and pave the way for a hydrogen-powered sustainable future.

Potential topics related to hydrogen include the following:

  1. Advanced hydrogen production technologies (e.g., electrolysis, reforming, biomass conversion);
  2. Hydrogen storage materials and techniques (e.g., solid-state storage, chemical storage);
  3. Hydrogen transportation and distribution infrastructure;
  4. Safety standards and risk assessment in hydrogen handling and storage;
  5. Hydrogen fuel cells: efficiency, durability, and cost reduction strategies;
  6. Life cycle assessment of hydrogen production and utilization systems;
  7. Hybrid energy systems: integration of hydrogen with renewable energy sources;
  8. Hydrogen applications in industry and power generation;
  9. Policy frameworks and regulatory mechanisms to promote hydrogen adoption;
  10. Socio-economic impacts and public acceptance of hydrogen technologies.

Dr. Mohammad Yazdi
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • hydrogen energy
  • renewable energy
  • safety
  • sustainability infrastructure
  • technological innovations
  • decarbonization
  • energy security
  • policy frameworks
  • integration

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Published Papers (2 papers)

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Research

30 pages, 8445 KiB  
Article
Critical Environmental Factors in Offshore Wind–Hydrogen Projects: Uruguay’s Exclusive Economic Zone
by Luisa Rivas, Alice Elizabeth González and Alejandro Gutiérrez
Sustainability 2025, 17(13), 6096; https://doi.org/10.3390/su17136096 - 3 Jul 2025
Viewed by 479
Abstract
Green hydrogen is a promising solution for decarbonizing emission-intensive sectors, with its production through offshore wind energy offering viable opportunities. This study presents a preliminary assessment of the main environmental factors potentially affected by offshore wind and green hydrogen projects in Uruguay’s Exclusive [...] Read more.
Green hydrogen is a promising solution for decarbonizing emission-intensive sectors, with its production through offshore wind energy offering viable opportunities. This study presents a preliminary assessment of the main environmental factors potentially affected by offshore wind and green hydrogen projects in Uruguay’s Exclusive Economic Zone (EEZ), where such developments pose environmental challenges that require evaluation, particularly given the limited prior research in Uruguay and Latin America. Through a comprehensive review of international literature and national technical data, the study identifies key interactions between project activities and the physical, biotic, and anthropic environmental components during the development, construction, and operational phases. Using cross-reference matrices and impact categorization, the analysis highlights that activities such as foundation installation, submarine cable deployment, and offshore electrolysis could significantly affect the seabed, underwater noise levels, water quality, and marine biodiversity. The biotic and physical environment were found to be the most frequently impacted. To contextualize these findings, technical information specific to Uruguay’s EEZ was reviewed to identify the most vulnerable regional environmental factors. The results offer a science-based foundation to support early-stage environmental assessments and guide sustainable offshore energy development in the region. Full article
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18 pages, 1972 KiB  
Article
Learning from Arctic Microgrids: Cost and Resiliency Projections for Renewable Energy Expansion with Hydrogen and Battery Storage
by Paul Cheng McKinley, Michelle Wilber and Erin Whitney
Sustainability 2025, 17(13), 5996; https://doi.org/10.3390/su17135996 - 30 Jun 2025
Viewed by 353
Abstract
Electricity in rural Alaska is provided by more than 200 standalone microgrid systems powered predominantly by diesel generators. Incorporating renewable energy generation and storage to these systems can reduce their reliance on costly imported fuel and improve sustainability; however, uncertainty remains about optimal [...] Read more.
Electricity in rural Alaska is provided by more than 200 standalone microgrid systems powered predominantly by diesel generators. Incorporating renewable energy generation and storage to these systems can reduce their reliance on costly imported fuel and improve sustainability; however, uncertainty remains about optimal grid architectures to minimize cost, including how and when to incorporate long-duration energy storage. This study implements a novel, multi-pronged approach to assess the techno-economic feasibility of future energy pathways in the community of Kotzebue, which has already successfully deployed solar photovoltaics, wind turbines, and battery storage systems. Using real community load, resource, and generation data, we develop a series of comparison models using the HOMER Pro software tool to evaluate microgrid architectures to meet over 90% of the annual community electricity demand with renewable generation, considering both battery and hydrogen energy storage. We find that near-term planned capacity expansions in the community could enable over 50% renewable generation and reduce the total cost of energy. Additional build-outs to reach 75% renewable generation are shown to be competitive with current costs, but further capacity expansion is not currently economical. We additionally include a cost sensitivity analysis and a storage capacity sizing assessment that suggest hydrogen storage may be economically viable if battery costs increase, but large-scale seasonal storage via hydrogen is currently unlikely to be cost-effective nor practical for the region considered. While these findings are based on data and community priorities in Kotzebue, we expect this approach to be relevant to many communities in the Arctic and Sub-Arctic regions working to improve energy reliability, sustainability, and security. Full article
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