In Wisconsin, at the University of Wisconsin-Milwaukee, Hamza Alnawafah, a doctoral student in mechanical engineering, is leading an innovative project focused on creating green hydrogen at wastewater treatment plants. By utilizing gray water and electricity from solar cells on-site, Alnawafah's closed-loop system aims to enhance energy efficiency, reduce dependence on grid electricity, and make use of green hydrogen and oxygen in a sustainable manner. This approach has shown promising results, with a 15% increase in energy efficiency observed at a Wisconsin wastewater treatment facility. Alnawafah's research emphasizes the importance of optimizing hydrogen production by adjusting water temperature and pressure levels to maximize output. Moreover, the project highlights the value of oxygen as a resource, with plans to utilize 100% oxygen for enhanced efficiency in wastewater treatment processes. The implications of this technology extend beyond wastewater treatment plants, as it showcases the potential for green hydrogen to become a viable secondary energy source in various industries, such as hospital complexes. By addressing cost control and efficiency improvements, the project paves the way for a more sustainable energy future, despite the challenges associated with green hydrogen production. Through continuous research and innovation, Alnawafah and his team are contributing to the advancement of renewable energy solutions and promoting a greener approach to energy production.