A team of researchers from Griffith University in Australia has introduced a new methodology to evaluate the levelized cost of hydrogen, considering factors like overload capacity and power-dependent efficiency of the electrolyzer. This approach aims to provide a more accurate estimation of hydrogen production costs, particularly in green hydrogen studies. By analyzing various regions designated as hydrogen hubs in Australia, the study assessed the cost-competitiveness of green hydrogen compared to grey hydrogen, emphasizing the significance of internalizing environmental costs. The researchers found that scaling up renewable hydrogen production is essential for Australia to establish itself as a leader in this sector. The study, recently published in Applied Energy, highlighted the potential of the country in cost-effective renewable hydrogen production but warned about the necessity of significant scale-up to avoid lagging behind. The introduction of a carbon cost based on production methods was suggested as a means to enhance the competitiveness of green hydrogen at specific hubs. Overall, the research underscores the importance of innovative approaches and scaling efforts for Australia to capitalize on the opportunities presented by renewable hydrogen production.