The Green Hydra project, under the Interreg Europe programme, has identified Croatia’s pilot of a hydrogen-powered bus in public urban transport as a notable example of good practice.

The City of Zagreb and its public transport operator, Zagreb Electric Tram Ltd. (ZET), conducted a one-week trial of a hydrogen-powered bus. The trial aimed to evaluate the feasibility of integrating low-emission vehicles into the city’s public transport system.

This initiative provided Zagreb and ZET with initial operational experience in hydrogen technologies, fostered collaboration among relevant stakeholders, and supported efforts to raise public awareness.

During the trial, the bus operated across five countries, covering a distance of 1,641 km and consuming approximately 125 kg of hydrogen, with an average consumption rate of 7.6 kg per 100 km. Plans are under way to deploy 150 hydrogen buses in the region over the coming years.

Further details on this case—including resource requirements, performance indicators, transferability, and expert commentary—are available in the project publication dated 1 August 2024.

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