TECHNO-ECONOMIC ASSESSMENT OF ENERGY LOSSES AND UNSERVED ENERGY IN A TYPICAL 11KV DISTRIBUTION FEEDER (A CASE STUDY OF GRA 11KV DISTRIBUTION FEEDER)

This project evaluates the techno-economic impact of energy losses and unserved energy on a typical 11kV distribution feeder, using the GRA feeder as a case study. Data were collected over one month from the GRA 33/11kV injection substation and the Transmission Company of Nigeria (TCN), then analyzed and simulated in PSS/E to estimate technical losses and voltage profiles. The study found that active power losses of 277.72 kW (equivalent to 277.72 kWh per hour) significantly contribute to network inefficiencies. When converted to monetary value using current tariff structures, these losses result in substantial financial costs across all customer bands, with Band A alone exceeding ₦1.39 million daily if sustained. Overall, the findings show that even moderate technical losses and outages can lead to significant financial burdens. This underscores the importance of improving network efficiency and reliability to reduce energy losses and minimize the economic impact of unserved energy