Increasing population growth has pressed the need to conserve potable water and protect the water bodies by keeping the rivers/ water bodies clean. Treatment of effluent is typically made by effluent treatment plant which often employs variable frequency drives (VFD) at different stages of treatment. Typically an effluent treatment plant is grid connected, bulkier and erected near industrial hubs of a large city. However, electricity unavailability in remote locations restricts installation of effluent treatment plant (ETP) at localised level. This paper proposes small capacity generation system to cater the electricity requirements of effluent treatment plant and making it energy self-sufficient. The proposed generation system employs Run-off river fed induction generator (IG) with power electronic load controller and caters a VFD fed pumps, lighting, heating appliances for the ETP. Rigorous phasor analysis, mathematical modeling and system simulations have been made which may offer minimum hardware approach at near constant frequency by effective power matching. The hardware prototype of the proposed system has been developed and experimental validation has been made using low cost DsPIC microcontroller. Performance of the system has been validated both through Matlab simulations and experimental results. The result establishes the effectiveness of the proposed control.