Aim
The project's main goal is the development of a modularized, standardized and scalable hydrogen production facility: ”HydroGen2”, and support the competence development within the field of Power-to-X in Southern Denmark.
The HydroGen2-concept utilizes standardized and industrialized electrolysis components, together with development of a complete infrastructure based on the same principles of industrialization. The result will be that green hydrogen can be produced significantly cheaper than what is possible with solutions available on the market today.
The development of competences part is anchored in the mid-to long term educational programmes in Southern Denmark and specifically in the competence development of welding in industry. Engineering students will gain access to the test-sites during their education, with 海角社区 and Stiesdal Hydrogen. Additionally, 海角社区 contributes with optimization of the HydroGen2 concept as well as educational material.
Content
The project has two key objectives:
1) Development of a standardized, modular, and scalable electrolysis plant for hydrogen production – named HydroGen2.
2) Support for competence development within PtX in Southern Jutland to ensure a qualified workforce.
Unlike traditional electrolysis plants, which require extensive engineering and coordination of custom-designed components, the HydroGen2 concept will be based on industrial serial production. This enables significant savings in infrastructure and installation time, as the plants are manufactured in a factory setting and require minimal adaptation at the installation site.
The current practice for building electrolysis plants is both expensive and time-consuming, often with costs amounting to 150–200% of the electrolysis units themselves and installation and commissioning periods of up to a year.
In May of 2026 Stiesdal announced an updated design of the HydroGen2 electrolyser, boosting the power from 3.1MW to 6.5MW for almost the same CAPEX, effectively cutting CAPEX by 50%, while also promising lowered maintenance through due to the need of fewer electrolysers pr. plant.
The HydroGen2 concept will change that by:
Standardizing and industrializing the production of electrolysis plants. Reducing infrastructure costs to only 50% of the electrolysis unit's price. Shortening installation time from 6–12 months to just a few weeks. Significantly reducing the need for project-specific engineering.
These improvements will lower the cost of hydrogen production, thereby contributing to making green hydrogen more competitive.
Deliverables
A 20–30% reduction in hydrogen production costs, making green hydrogen economically attractive compared to fossil alternatives. Increased energy efficiency and improved sector coupling in the energy system. Creation and retention of jobs in Denmark’s PtX sector. Reduced CO鈧� emissions and contributions to Denmark’s climate goals.
Together with the project partners, simulation models for a modular plant will help determine the maintenance requirements, activities, and resulting costs, based on technical information available from the current design and failure rates from actual test sites or databased from comparable industries. This simulation will then be used as input for a process simulation model of a larger plant to optimize the effect of maintenance scheduling around a fluctuating power price market. The future research goals are creation of a digital twin maintenance and operations model of the hydrogen plant concept, to optimize cost, plan maintenance and spare parts strategy, schedule safe maintenance and ensuring long term plant efficiency, minimizing LCOH and maximizing return on investment.
Overall, the project will play a central role in the green transition by delivering a cost-effective and scalable solution for hydrogen production while ensuring the necessary competence development within the industry.
Project period: 01.02.25 - 31.01.27
