Wastewater treatment sites are facing increasing pressures to decarbonise operations while maintaining resilience to energy grid constraints. Microbial electrolysis cells (MECs) have emerged as a promising technology for converting organic matter in wastewater into hydrogen gas, offering the potential to combine steady treatment performance with on-site energy recovery. Severn Trent Water are exploring the application of MEC technology for treating strong wastewater streams, such as sludge derived liquors, with the aim of producing hydrogen to support power resilience at treatment sites. The work focuses on defining suitable wastewater characteristics, system configuration, and integration pathways within existing treatment infrastructure, rather than lab scale optimisation. This trial will take place at Severn Trent’s Resource Recovery and Innovation Centre (R2IC). This presentation will outline the technical rationale for selecting strong wastewater streams for MEC application, the proposed trial configuration, and the key operational and safety considerations associated with hydrogen generation on wastewater treatment sites. It will also discuss the potential role of MECs within a wider energy and carbon reduction strategy, alongside more established technologies. The work provides a practical perspective on the readiness of MEC technology for deployment within the water industry and highlights the challenges and opportunities associated with transitioning from concept to a site-based trial.