A groundbreaking new study has revealed potential gaps in Australia’s hydrogen certification framework, raising concerns about its alignment with emerging international standards as the nation eyes a leadership role in the global hydrogen market.
The research, conducted by Monash University engineers, scrutinises how well existing certification schemes ensure that hydrogen produced from renewable electricity delivers genuine climate benefits.
Using Australia’s National Electricity Market (NEM) as a case study, the team applied life cycle assessment (LCA) to test the effectiveness of the three key principles — often called the ‘three pillars’ — that underpin many international hydrogen certification schemes.
These pillars require that hydrogen is produced using newly added clean energy, that supply and demand are matched in real time, and that the energy comes from the same region as the hydrogen production.
The findings come at a critical time, as Australia prepares to compete in a global hydrogen market where credibility and carbon transparency are fast becoming non-negotiable.
The study highlights that while time matching — aligning hydrogen production with periods of renewable electricity generation — can effectively reduce grid-related emissions, it also demands highly flexible operations and more infrastructure, resulting in higher costs and increased embodied emissions.
In contrast, annual matching, a less stringent approach, may help the industry scale up quickly but does not achieve the lowest emissions outcomes.
Researchers also warn that the hidden carbon costs of building the equipment and infrastructure to support hydrogen projects — known as embodied emissions — are largely excluded from current certification rules, despite their growing significance as the sector matures.
Most of these embodied emissions are associated with overseas-manufactured plant and equipment.
In a positive finding, the study supports the exclusion of geographic correlation in the Australian Guarantee of Origin Scheme, noting that such restrictions could undermine the broader benefits of shared, inter-regional electricity flows within the NEM.
Lead author Dr Graham Palmer, from Monash’s Department of Civil and Environmental Engineering, emphasised the stakes for Australia’s export ambitions: “Governments are facing a real challenge in balancing environmental stringency with the need to support a nascent industry.
“This study shows that some well-intentioned certification rules can undermine mitigation efforts when viewed through a whole-of-system lens,” Dr Palmer said.
He added: “The findings underscore the importance of evidence-based policy design, especially as Australia and its trading partners move toward a more formalised hydrogen certification landscape.”
The third pillar, additionality — which addresses whether hydrogen production stimulates new renewable investment — was not assessed in this study.
The researchers note that this issue is better addressed through policy and market design rather than life cycle modelling.
As international competition intensifies, the study’s authors urge policymakers to strengthen Australia’s certification framework to ensure it remains credible and competitive on the world stage.
