Archivos de la etiqueta: green hydrogen

Now available: HEAVENN webinar replay – Building confidence in underground hydrogen storage (UHS)

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On December 17, 2025, the HEAVENN project hosted a high-level webinar titled “Confidence in Underground Hydrogen Storage (UHS) in Zuidwending, The Netherlands.” The session explored how real-world operational experience serves as the foundation for public trust—one of the most critical success factors for the global scale-up of hydrogen.

The webinar replay is now available for all platform members and hydrogen stakeholders.

Why Underground Storage is a Game-Changer

For hydrogen territories to thrive, large-scale and long-duration storage is essential. As highlighted by Eddy Kuperus (Gasunie), underground options like salt caverns provide the necessary volume to balance renewable energy variability and ensure security of supply, moving beyond simple short-term buffering to true system-wide stability.

Key Insights from the Session

The webinar delved into the technical and strategic lessons learned from the Zuidwending pilot project:

  • Safety & Standards: While hydrogen behaves differently than natural gas (lower ignition energy and different material compatibility), the pilot confirmed that it can be stored safely using similar methodologies.

  • The Zuidwending Pilot: Since 2018, Gasunie has tested cavern integrity and operational procedures. The findings reveal no technical «deal-breakers,» proving that large-scale storage is feasible today.

  • Hydrogen Quality: An ongoing debate remains regarding European standards for purity, especially when repurposing existing assets.

  • The «Confidence Quadrant»: Success isn’t just about technology. It requires a balance of four pillars: Technical reliability, Governmental support, Economic viability, and Societal acceptance.

«Technical feasibility is the baseline, but public trust is built through governance, transparency, and clear communication of safety and benefits.» — Eddy Kuperus, Gasunie.

Watch the Replay

Whether you are a project developer, policymaker, or researcher, the lessons shared in this session are highly transferable to hydrogen infrastructure projects worldwide.

Groundbreaking ceremony for the Trieste Hydrogen Hub

Trieste inaugurates new green hydrogen hub

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Trieste has officially initiated construction on a new Green Hydrogen Hub, a key strategic initiative designed to accelerate the energy transition and decarbonize local transport and industries. The groundbreaking ceremony, held on September 18, 2025, marked a significant step toward a sustainable energy future, with top officials and industry leaders in attendance.

The project, spearheaded by AcegasApsAmga, is a concrete move toward creating a robust green hydrogen ecosystem, aligning with the EU’s climate goals and Italy’s national hydrogen strategy. The ultimate goal is to position Trieste as a leading hub for energy innovation.

A Project Focused on Circularity and Innovation

With a total investment exceeding €20 million, the hub is funded through Italy’s National Recovery and Resilience Plan (PNRR) (€15.8 million) and the Horizon EU program (€1.5 million). The project includes a 5 MW electrolysis plant and a 4.8 MW photovoltaic park.

A key feature of the project is its commitment to the circular economy. The electrolysis plant will be located next to Trieste’s waste-to-energy facility, allowing it to recover wastewater from the waste-to-energy process for use in hydrogen production. The solar park will also be built on a former industrial site, contributing to urban renewal.

Expected to produce approximately 370 tonnes of hydrogen per year, the hub will cover the entire value chain—from production and storage to distribution—to create a local market for renewable hydrogen. The plant is scheduled to begin operations in 2026, meeting the PNRR’s demanding deadlines.

Collaboration Beyond Borders

The Hydrogen Hub Trieste is a testament to effective public-private collaboration and an integrated, multidisciplinary approach. This initiative is also a pivotal component of the North Adriatic Hydrogen Valley, Europe’s first cross-border hydrogen agreement, which includes the Friuli Venezia Giulia Region, Slovenia, and Croatia. This wider collaboration involves 37 organizations and 17 pilot projects, aiming to produce 5,000 tonnes of hydrogen annually.

According to Sergio Emidio Bini, Regional Councillor for Economic Development and Tourism, the project shows that a careful, collaborative, and transparent governance model can lead to swift implementation. Roberto Dipiazza, Mayor of Trieste, emphasized that the project is a result of public and private sectors joining forces for the collective interest, further solidifying Trieste’s growing role in Europe’s energy landscape.

Carlo Andriolo, CEO of AcegasApsAmga, summarized the hub’s significance, stating that it’s more than just a production plant; it’s about creating a «true local ecosystem» to accelerate the energy transition.

S3-Hydrogen-Valleys-General-Assembly-in-Brussels-June-2025.

S3 Hydrogen Valleys Partnership kicks off 2025 with General Assembly in Brussels

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The S3 Hydrogen Valleys Partnership held its first General Assembly of the year at the Scotland Europa office in Brussels, bringing together regional representatives, hydrogen experts, and institutional stakeholders from across Europe. The hybrid event, also streamed via Teams, marked a key moment for collaboration and strategic alignment in the development of hydrogen valleys.

The session opened with a review of the Partnership’s progress over the past year, followed by the unveiling of an updated governance structure and the presentation of a new Memorandum of Understanding. Attendees also discussed the annual work plan, which outlines priorities for 2025 and beyond.

Five dedicated working groups shared updates on their respective focus areas:  Natural hydrogen,  Mobility, Investment, Communication, Advocacy.

Regional initiatives took center stage, with highlights including the small-scale hydrogen valley in Scotland and the research efforts of the CH2ESS center in Sweden. These examples showcased the diversity and innovation emerging from local ecosystems.

The day concluded with presentations of flagship hydrogen valley projects that exemplify Europe’s commitment to territorial deployment:

  • HySPARK (Poland)
  • EASTGATEH2V (Slovakia)
  • Hi2 Valley (Austria)
  • CyLH2Valley (Spain, Castilla y León)

These projects reflect the growing momentum behind hydrogen valleys as a cornerstone of the EU’s energy transition strategy, reinforcing the role of regions in shaping a climate-neutral future.

📩 Want to learn more or join the Hydrogen Territories Platform? Visit and explore how your region can contribute to the hydrogen economy.