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  1. Hydrogen pipelines vs. HVDC lines
    should we transfer green molecules or electrons?
    Erschienen: November 2023
    Verlag:  The Oxford Institute for Energy Studies, [Oxford]

    As the world races to decarbonize its energy systems, the choice between transmitting green energy as electrons through high-voltage direct current (HVDC) lines or as molecules via hydrogen pipelines emerges as a critical decision. This paper... mehr

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    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    DS 784
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    As the world races to decarbonize its energy systems, the choice between transmitting green energy as electrons through high-voltage direct current (HVDC) lines or as molecules via hydrogen pipelines emerges as a critical decision. This paper considers this pivotal choice and compares the techno-economic characteristics of these two transmission technologies. Hydrogen pipelines offer the advantage of transporting larger energy volumes, but existing projects are dwarfed by the vast networks of HVDC transmission lines. Advocates for hydrogen pipelines see potential in expanding these networks, capitalizing on hydrogen’s physical similarities to natural gas and the potential for cost savings. However, hydrogen’s unique characteristics, such as its small molecular size and compression requirements, present construction challenges. On the other hand, HVDC lines, while less voluminous, excel in efficiently transmitting green electrons over long distances. They already form an extensive global network, and their efficiency makes them suitable for various applications. Yet, intermittent renewable energy sources pose challenges for both hydrogen and electricity systems, necessitating solutions like storage and blending. Considering these technologies as standalone competitors belies their complementary nature. In the emerging energy landscape, they will be integral components of a complex system. Decisions on which technology to prioritize depend on factors such as existing infrastructure, adaptability, risk assessment, and social acceptance. Furthermore, while both HVDC lines and hydrogen pipelines are expected to proliferate, other factors such as market maturity of the relevant energy vector, government policies, and regulatory frameworks around grid development and utilization are also expected to play a crucial role. Energy transition is a multifaceted challenge, and accommodating both green molecules and electrons in our energy infrastructure may be the key to a sustainable future. This paper’s insights underline the importance of adopting a holistic perspective and recognising the unique strengths of each technology in shaping a resilient and sustainable energy ecosystem.

     

    Export in Literaturverwaltung   RIS-Format
      BibTeX-Format
    Quelle: Verbundkataloge
    Sprache: Englisch
    Medientyp: Ebook
    Format: Online
    ISBN: 9781784672218
    Weitere Identifier:
    hdl: 10419/280134
    Schriftenreihe: Array ; 27
    Schlagworte: decarbonization; electrolyser; energy transfer capacity; energy transfer infrastructure; HVDC lines; Hydrogen pipelines; Offshore wind; sustainable energy transition; system considerations; techno-economic analysis
    Umfang: 1 Online-Ressource (circa 35 Seiten), Illustrationen
  2. Hydrogen for the "low hanging fruits" of South America
    decarbonising hard-to-abate sectors in Brazil, Argentina, Colombia, and Chile
    Erschienen: May 2024
    Verlag:  The Oxford Institute for Energy Studies, [Oxford]

    Hydrogen produced with minimal or no carbon emissions is often expected to become an important tool for meeting climate objectives and decarbonising national economies that currently mostly rely on fossil fuels. Despite initial expectations, it seems... mehr

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    Verlag (kostenfrei)
    Verlag (kostenfrei)
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    DS 784
    keine Fernleihe

     

    Hydrogen produced with minimal or no carbon emissions is often expected to become an important tool for meeting climate objectives and decarbonising national economies that currently mostly rely on fossil fuels. Despite initial expectations, it seems unlikely that clean hydrogen will be used by all industries that require decarbonization. However, many researchers, policymakers, and energy practitioners anticipate that some hard-to-abate sectors, such as producers of oil and gas/petrochemicals, nitrogen fertilizers, steel, and electricity, and heavy-duty and long-distance land transport, will be among the first to adopt this substance, paving the way for others. Hence, they are often referred to as the ‘low hanging fruits’ since their transition to hydrogen is anticipated to be more feasible and often less complex compared with other industries. While considerable attention has been given to the role of clean hydrogen in the decarbonization efforts across Europe, Japan, South Korea, and the United States, the potential role of this substance in South America – a continent largely associated with significant potential for the cost-competitive production of decarbonised hydrogen – has not received substantial attention. Furthermore, besides favourable geographical and geological conditions that could enable the countries of the region to develop the manufacturing of clean hydrogen and its derivatives for export, South American nations also face challenges posed by hard-to-abate sectors that could potentially use hydrogen to decarbonise their operations. Therefore, this paper focuses on Brazil, Argentina, Colombia, and Chile – the four largest economies of the continent with ambitious plans to develop national hydrogen sectors – and analyzes the opportunities and challenges posed by clean, domestically sourced hydrogen for the decarbonization of their ‘low hanging fruits’. It then compares and contrasts the key findings and finally concludes by applying the main points to similar industries worldwide.

     

    Export in Literaturverwaltung   RIS-Format
      BibTeX-Format
    Quelle: Verbundkataloge
    Sprache: Englisch
    Medientyp: Ebook
    Format: Online
    ISBN: 9781784672379
    Schriftenreihe: Array ; 33
    Schlagworte: Argentina; Brazil; Chile; Colombia; cost reduction; decarbonization; electrolyser; energy transfer capacity; energy transfer infrastructure; green hydrogen; Hydrogen; policy support; South America; sustainable energy transition; system considerations
    Umfang: 1 Online-Ressource (circa 57 Seiten), Illustrationen