A groundbreaking study has unveiled an innovative approach to green hydrogen production by utilizing urea found in urine and wastewater. Traditional methods of hydrogen production, such as electrolysis of water or relying on hydrogen from dirty fuel sources like natural gas, have significant drawbacks including high energy consumption, carbon emissions, and toxic byproducts. The research team from COE-CSI and the University of Adelaide has introduced two new urea-based electrolysis systems that offer a promising solution to these challenges. By harnessing urea as a source of hydrogen, the team aims to revolutionize energy production by providing a sustainable alternative that is both cost-effective and environmentally friendly. These systems are not only comparable or cheaper than existing methods but also produce harmless nitrogen gas instead of toxic byproducts like nitrates and nitrites, demonstrating a leap towards greener energy generation. Moreover, the utilization of urea from sewage and wastewater not only supports a circular economy but also contributes to water treatment efforts, showcasing a holistic approach to sustainability. The research highlights the potential of hydrogen as a versatile energy carrier that can be applied in heating buildings, powering electric vehicles, and storing renewable energy. Despite the positive outcomes, challenges remain, such as the use of platinum-based catalysts, which are not sustainable in the long term. The ongoing research focuses on developing alternative, non-precious metal catalysts to enhance the efficiency and sustainability of urea-based electrolysis systems. This breakthrough not only offers a glimpse into a cleaner and more secure energy future but also signifies a crucial step towards reducing carbon emissions and promoting sustainable practices in the energy sector. With further advancements in this field, the potential for green hydrogen to play a pivotal role in global energy transition is promising.