Sardinian narrow-gauge railways are set to transition to hydrogen-powered trains starting in 2028, phasing out diesel locomotives. The hydrogen fuel will be produced using solar energy, creating a sustainable transportation solution for the island. This initiative aims to modernize the railway network and reduce its environmental impact. The project represents a significant investment in green technology for regional transport. Officials anticipate the hydrogen trains will offer a cleaner and more efficient alternative to traditional diesel engines. The move aligns with broader efforts to decarbonize transportation across Italy and promote renewable energy sources. This transition is expected to improve air quality and contribute to Sardinia’s sustainability goals.