The green hydrogen industry is seeing fluctuations as some projects succeed while others fail. One innovative approach involves utilizing wastewater for green hydrogen production. Initiatives like the NTU project in Singapore are exploring ways to convert sewage sludge into valuable resources like hydrogen and animal feed efficiently. This method aims to recover more resources, remove contaminants, and offer better economic feasibility than traditional anaerobic digestion. By introducing renewable energy sources into wastewater treatment plants, significant reductions in carbon emissions and energy usage can be achieved. The NTU research team's three-step process involves separating contaminants, utilizing solar-powered electrochemical processes, and introducing bacteria to produce green hydrogen and animal feed protein. This approach not only reduces CO2 emissions but also enhances resource recovery. The wastewater-to-hydrogen solution has the potential to address water resources issues and contribute to a more sustainable future for green energy production.