Italian longs stainless steel producer Cogne Acciai Speciali has taken a further step forward in its €8 million ($9.1m) green hydrogen project at its headquarters in Aosta, northern Italy.
The steelmaker has finalised the purchase of hydraulic turbines for a hydroelectric power plant to be built on the Dora Baltea river, adjacent to the facility, Kallanish notes.
The plant, with an average annual output of 315kW, will include three StreamDiver production units built by Voith Hydro. Energy for the electrolyser will be supplied by the hydroelectric plant alongside a newly constructed rooftop photovoltaic system.
The project aims to eliminate emissions from a heat treatment furnace by replacing natural gas with green hydrogen produced through electrolysis, advancing the company’s decarbonisation.
The project is part of Italy’s National Recovery and Resilience Plan under the Green Revolution and Ecological Transition mission, and is funded by the European Union’s NextGenerationEU programme, Cogne reveals in a note.
The steelmaker commissioned the green hydrogen pilot project last year (see Kallanish 15 September 2025).


