An innovative electrolyser design that uses steam instead of water to produce green hydrogen has completed a successful 1000-hour trial at BlueScope’s Port Kembla Steelworks in New South Wales. This solid oxide electrolysis (tSOE) technology, developed over seven years by a team of 14 scientists from CSIRO in collaboration with Hadean Energy, aims to revolutionize hydrogen production processes. By passing high-temperature steam through ceramic tubes at 750°C and running an electric current to split the steam into hydrogen and water, this system promises to reduce manufacturing costs by 30% and produce hydrogen at less than 36 kWh a kilo. The use of steam in the electrolysis process is seen as a game changer, potentially reducing the significant variable costs associated with electricity in renewable hydrogen production. The system's successful trial run has proven the concept, with future plans focusing on scaling up production for applications like iron and steelmaking, essential for decarbonization efforts. The technology's potential extends globally, with plans for a 250 kWh demonstration system and a showcase of a 5kW electrolyser in the Australia-UK Renewable Hydrogen Innovation Partnership. This innovative approach not only aims to enhance cost efficiency but also contribute to the decarbonization of industries like steelmaking, where hydrogen plays a crucial role in reducing emissions.