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    HIGH-PERFORMANCE
    ELECTROLYSIS

    SOEC: THE MOST EFFICIENT TECHNOLOGY FOR GREEN HYDROGEN PRODUCTION

    WHAT IS SOLID-OXIDE-ELECTROLYSIS (SOEC)?

     

    There are three common industrial technologies for producing green hydrogen through electrolysis: high-temperature SOEC, low-temperature alkaline, and low-temperature proton exchange membrane (PEM). 

    Only SOEC uses water in the state of steam. The breakdown of the steam takes place within the SOEC cell, where it is split via reduction into a green hydrogen molecule and oxide ions (O2-). The oxide ions are then transported through the electrolyte to the anode and oxidized into oxygen molecules. 

    One significant benefit of choosing SOEC is its high efficiency compared to alternative technologies. This efficiency, achieved by leveraging high-temperature electrolysis, ultimately makes it possible to produce more hydrogen per unit of power. 

    SOEC: THE KEY TO REALIZING GREEN HYDROGEN POTENTIAL

    SOEC technology plays a vital role in the sustainable production of green hydrogen. By utilizing renewable energy sources to power the electrolysis process, SOEC enables the efficient conversion of water into hydrogen and oxygen without harmful emissions.

    This innovative technology not only enhances the efficiency of hydrogen production but also supports global efforts to reduce carbon footprints and transition to a cleaner energy future.

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    TOPSOE'S HIGH EFFICIENCY SOEC TECHNOLOGY

     

    Our SOEC technology offers clear efficiency benefits. With optimal design and plant integration, you get seamless industrial-scale production. With lower voltage operation, you get more efficient use of energy. And with higher hydrogen output per unit of power, you maximize the impact of renewable energy sources. 

     

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    Optimal design and plant integration

    Topsoe_Icon_RGB_Energy Power

    Between 20%-30% higher efficiency

    E-fuels and chemicals

    Higher hydrogen output per unit of power

    COMPARING SOEC TO INDUSTRY ALTERNATIVES

    Our SOEC technology leverages high-temperature electrolysis, producing more hydrogen per unit of power compared to traditional alkaline and PEM methods.

    This is achieved through faster reaction kinetics and optimized conductivity, resulting in higher efficiency and lower power consumption.

    With our SOEC, renewable electricity is utilized optimally to produce green hydrogen efficiently. This results in more efficient and carbon-free processes for Power-to-X solutions.

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    TOPSOE: YOUR PROVEN AND PREPARED SOEC PARTNER

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    80+ years of
    innovation & expertise

    With decades of experience bringing new technologies to market, we have the expertise to scale them.

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    Competitive
    LCoH

    Highly efficient electrolyzer technology that delivers between 20%-30% higher efficiency for a fast ROI. 

    E-fuels and chemicals
    Downstream
    synthesis technologies

    Designed to serve multiple downstream applications, including fuel for transportation, power storage and fertilizer.

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    Holistic service approach

    Supported by experts under a guaranteed performance program to ensure safe, efficient and compliant operation of the SOEC process.

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    500 MW
    manufacturing facility

    In the beginning of 2025, we are ready to offer manufacturing at scale with EU’s first industrialized SOEC manufacturing facility.

    HOW WE CAN HELP YOU SUCCEED

    Modular SOEC structure with multiple cores designed for scalable production

    Modular design for scalable production 

    Our SOEC modularity is built around three main components: cells, stacks and cores. Each core consists of an array of stacks, made from multiple cells stacked vertically. A series of cores make up a full SOEC section, ensuring flexible and scalable green hydrogen production.

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    SOEC technology made for downstream integration

    Our SOEC technology is designed to integrate effortlessly with downstream processes, enabling green hydrogen to be converted into green ammonia for chemical applications or energy storage, e-Methanol for transportation fuels, and other green chemicals.

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    Expert service for guaranteed uptime

    Get the most from your SOEC technology with our comprehensive Operations and Maintenance program. We ensure guaranteed uptime, conversion rates, and a seamless, worry-free experience so you can focus on scaling your business. 

    CASE: INTEGRATED TECHNOLOGY PROVIDER FOR FIRST AMMONIA

    With Topsoe as its integrated technology provider, First Ammonia is constructing the world’s first commercial scale green ammonia plant using our SOEC technology. This means that First Ammonia can now harness the combined power of our SOEC electrolyzer and dynamic ammonia loop technologies to produce green ammonia. Based on the modular design of our SOEC plant, we bring ultimate flexibility and scalability, simpler maintenance and easy deployment. This landmark plant, based in Port Victoria, Texas, demonstrates the commercial viability of SOEC technology and modular green ammonia production at an industrial scale.

    HOW WE'VE HELPED FIRST AMMONIA

    THE EU'S FIRST INDUSTRIAL-SCALE SOEC FACTORY

    We are constructing the world’s first industrial-scale SOEC manufacturing facility in Herning, Denmark.

    Set to begin operations in 2025, this 500 MW plant is backed by a EUR 94 million grant from the EU Innovation Fund, which vets the project and serves to mitigate potential risks in getting our SOEC technology to market.

    The Herning facility will produce cutting-edge SOEC stacks, driving Europe’s green hydrogen goals and reducing CO2 emissions by approximately 7.5 million tonnes over the next decade compared to conventional hydrogen production methods.

    LEARN MORE ABOUT THE FACILITY

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