CSIRO, Australia’s national science agency, has successfully trialed its game-changing H₂ production technology at BlueScope’s Port Kembla Steelworks in New South Wales, demonstrating affordable and renewable H₂ can be generated at scale to help decarbonize heavy industry. 

CSIRO’s tubular solid oxide electrolysis (SOE) technology has clocked 1,000 hours of successful operation in the trial with BlueScope Steel which commenced in October 2024. 

Unlike conventional H₂ electrolyzers, which rely heavily on electricity to split water into H₂ and oxygen, CSIRO’s advanced SOE technology uses both waste heat (for example, steam from the steelworks) and electricity to produce H₂ with greater efficiency. 

Dr Sarb Giddey, Senior Principal Research Scientist and Group Leader in CSIRO, said the trial produced H₂ with an electrical input of less than 36 kWh per kilogram of H₂, by using the steam produced in the plant by the steelmaking processes.

“Since electricity takes up the lion’s share of variable production costs for renewable H₂, a substantial reduction in the electricity required (up to 30% saving) for H₂ production could be a game changer for the nascent H₂ industry,” Dr Giddey said. 

“Taking a new technology out of the lab and into the field can highlight unforeseen challenges, so we are delighted to see that our technology is meeting the performance requirements in terms of H₂ production, electrical efficiency and reliability.” 

Chris Page, Head of Future Technologies at BlueScope, sees H₂ as an important part of BlueScope’s pathway to net zero.

“BlueScope is proud to support pilot projects on site, which align with our goals of low carbon emission steelmaking in the future. The CSIRO electrolyzer pilot has produced positive outcomes in its short-term operation, and we look forward to seeing it evolve,” Mr Page said. 

CSIRO spinout Hadean Energy has licensed CSIRO’s SOE technology and is on a mission to accelerate industrial decarbonization. 

Chris Rowland, CEO of Hadean Energy, said the tubular SOE technology has a further advantage of being inherently less expensive to build because of the simplified manufacturing process and more readily available materials.

“The 1,000-hour milestone validates the technology in a real-world industrial setting, increasing the technology readiness level to prepare for commercialization,” Mr Rowland said. 

“It shows the potential for Hadean Energy’s electrolyzer to decarbonize hard to abate industries.” 

This research is supported by the Science and Industry Endowment Fund.

While CSIRO is trialing the tubular SOE electrolyzer in the field with Bluescope, Hadean Energy is testing the long-term durability and performance of the modular design at CSIRO’s H₂ Technology Demonstration Facility. Following these successful trials, Hadean Energy is preparing to showcase a 5-kW demonstration unit as part of the Australia-UK Renewable H₂ Innovation Partnerships. This will serve as a steppingstone toward a large-scale industrial pilot, positioning Hadean Energy as a leading global clean H₂ technology provider.