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Hydrogen blending trials are being conducted across Europe, including the Netherlands, Portugal, and Germany. The European Clean Hydrogen Alliance published a report in April 2025 that outlines these initiatives.

In the Netherlands, the 'Hydrogen City' project aims to replace natural gas with green hydrogen by 2030, repurposing existing infrastructure. Portugal’s Floene is implementing a 12% green hydrogen blend project in Seixal, targeting a 15% blend by 2030.

Meanwhile, in Bavaria, Germany, the H2Direkt project has been supplying 100% hydrogen to households since 2023, with infrastructure reliability confirmed even at -15°C. These projects underscore hydrogen's potential role in the energy transition.