The TECNALIA research and technological development center has developed an innovative electrolyzer capable of testing different H₂ production technologies. It is an experimental bench for companies to test the various components of an electrolyzer, mainly its core or stack, operating at approximately 50 kW and with a H₂ production capacity of around 1 kg/h.

• With its commissioning, TECNALIA has already started tests and demos with national and international companies at its facilities.
• The electrolyzer is located in the laboratory specialized in the development of technologies for the generation, storage, transport, distribution, use and safety of H₂ that TECNALIA launched last year at its facilities in Donostia-San Sebastian. More than 50 projects are currently being developed for the research and validation of H₂ technologies, as well as their scaling up to accelerate their industrialization.
• Of the four technologies capable of producing green H₂, this experimental bench is capable of testing two different ones: alkaline and AEM electrolysis. Designed entirely by TECNALIA, this prototype will be able to test the electrolyzer stack as well as balance the plant components under different operating conditions. It also includes advanced tools to monitor key process parameters.

According to Ekain Fernández, Head of H₂ Technology at TECNALIA, "we work closely with companies to achieve competitive green H₂ production. To this end, we research and develop innovative electrolysis technologies with the aim of reducing H₂ costs while we support companies with the testing and modelling of electrolyzers for their implementation in industry. The launch of this novel electrolyzer is a major step in our commitment to contributing to the development of H₂ economy."

While the prototype design is flexible to test both Alkaline and AEM electrolysis, TECNALIA has the expertise to develop prototypes for other technologies such as PEM.

More than 80 H₂ projects in 5 yr. In the past five years, TECNALIA has participated in more than 80 H₂ projects in different fields: generation, distribution, transport, storage, uses and safety.

It is currently working on the design, development and operation of electrolyzer prototypes for companies and has more than 70 researchers specializing in H₂-related projects.

Its manufacturing and testing know-how contributes to the development of advanced models for electrolyzers and H₂ systems. The aim of these models is to optimize the sizing of H₂ plants and H₂ refueling stations while guaranteeing cost-effectiveness and safety standards.

In this regard, it is worth highlighting the HYNNOVA initiative, which seeks to develop advanced technological solutions for the modular design and efficient management of large-scale renewable H₂ production plants. Headed by BOSLAN, the project includes the collaboration of 12 companies and TECNALIA is in charge of testing the electrolyzer stack to improve the competitiveness of renewable H₂ by reducing its levelized cost. HYNNOVA is supported by the Basque Government through its Hazitek program.