The reliability assessment was conducted for Afam Power Distribution System, in Oyigbo Local Government Area, Rivers State, for the purpose of adequate po wer supply evaluation and future expansion. For this study, 2 -years period of data was acquired for this research. The Electrical Transient Analyser Program (ETAP) software was employed to model and simulate the network for validation of analysis conducted. By calculation and use of the reliability module of ETAP Software, evaluation of the 3 -basic indices showed that the 11 kV NEPA line as well as the Ndoki 1 (33kV line) does not experience overloading, and rate of failure is very minimal, but the Ndoki 2 (33kV line) experiences high rate of interruption compared to the other lines. The average interruption rate of the system was observed to be as low as 0.7489f/yr for Ndoki1, 0.7510f/yr for Ndoki2 and 0.7104f/yr for NEPA; the SAIFI value obtained was 0.7138f/yr after improvement was implemented on the network. However, the improvement followed method of Static VAR Compensator to improve the reactive power of the network that made the system reliable. This paper recommends addition of power transformers to the network and also the integration of Static VAR Compensator (SVC), alternatively.
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