A recent study published in the journal Renewable and Sustainable Energy Reviews by academics from the University of Sheffield examined the progress of G20 nations in developing hydrogen economies. The research found that the US and China are leading in efforts to establish hydrogen fuels, with the UK, the EU, and Canada following closely behind. On the other hand, countries like Mexico, Saudi Arabia, Indonesia, and Turkey were identified as having less mature hydrogen economies. Disparities were observed in various aspects of hydrogen development, with some nations excelling in strategy but lagging in investment and standards. The study highlighted significant variations in hydrogen standards and legislation across the G20. Only a few countries such as China, the US, and the UK have updated hydrogen standards, while others like Brazil, India, and Russia lack established standards. As a response to these findings, the Sheffield academics are advocating for the G20 to establish a unified market with internationally recognized standards for hydrogen development. Professor Lenny Koh emphasized the importance of hydrogen fuels in transitioning away from fossil fuels and reducing carbon emissions, stressing the need for collective action to close the gaps in hydrogen development. Dr. Moein Shamoushaki highlighted the role of targeted investments in shaping effective legislation around hydrogen. The call for standardized emission thresholds and a clear definition of hydrogen aims to streamline efforts and reduce confusion among stakeholders. Overall, the study serves as a roadmap for G20 nations to identify gaps in their hydrogen economies and inform future investments and policies. By addressing these disparities and implementing targeted strategies, the G20 can accelerate the transition towards a cleaner and more sustainable energy future.