The GENOCOV research group has made significant advancements in wastewater treatment technology by testing nickel foam as a cathode material in microbial electrolysis cells (MECs). These cells not only treat wastewater but also generate resources like electricity, chemicals, and hydrogen by utilizing specific microorganisms present in the wastewater. The study conducted on a pilot scale using a large-scale MEC treated industrial wastewater and achieved the highest hydrogen production ever recorded, surpassing traditional materials like stainless steel wool. The results demonstrated continuous hydrogen production for over eighty days, showing the potential of MECs in industrial-scale wastewater treatment and energy recovery. By exploring more affordable cathode materials like nickel foam, the study paves the way for MECs to become net energy producers, offering a sustainable solution for wastewater management and resource recovery. This research contributes to the field of environmental engineering and waste valorization, highlighting the importance of sustainable technologies in combating climate change.