This research assessed the financial viability and environmental implications of the NEWgenerator, a NSS system, and provided insight into the implications of targeted improvements and local electric grid characteristics. Under general case assumptions, the photovoltaic energy configuration was approximately 0.006 USD•cap -1 •d -1 higher than the gridtied configuration but had lower GHG emissions by 23.6 kg CO2-eq•cap -1 •yr -1 . The treatment units (sludge pasteurization, AnMBR, NCS, EC), controls, and photovoltaic power unit were the main drivers of the NEWgenerator cost for both energy sources, particularly due to component replacements and consumables. The NEWgenerator GHG emissions were primarily driven by the effluent, NCS, sludge pasteurization, and EC units. Direct emissions from dissolved methane and inefficient biogas combustion (resulting in fugitive methane) and life cycle emissions from production of consumables (LPG, chemicals) were the main contributors to emissions. The treatment performance, technical details, O&M requirements, and materials needed for construction were based on laboratory-based experiments and a 534-day South Africa field trial.