A Techno-Economic Optimization of an Off-Grid System in Nigeria. A Case Study of Government Technical College, Eyagi, Bida

Abstract

Prioritizing energy access for technical training institution is crucial for effective nation building. This is particularly important since most  institution face challenges with unreliable power supply impending administrative, academic, practical and research activities thereby  hindering their ability to provide quality education and training. This paper aimed to identify the most effective optimal configuration  providing a cleaner ecofriendly environment of a Hybrid Renewable Energy System (HRES) of different combination of energy sources  (Solar Photovoltaic(PV), Wind Turbine(WT), Diesel Generator(DG) and Battery System(BS)) capable of meeting the energy requirement of  a technical institution in Niger State with a load demand of 453.97kWh/day and 56.280kW peak load demand while also providing benefits  to the community. The HOMER Pro (Hybrid Optimization Model for Electric Renewable) software (Version 3.11) was used to  stimulate and optimize system operation. The findings of the optimal hybrid system for the off-grid simulation ranked according to Net Present Cost (NPC) shows a substantial reduction in carbon dioxide emission when compared to conventional system. The convectional  system has a NPC of $8,318,813.00 and a Levelized Cost of Energy (LCOE) of $0.908/kWh and the incorporation of solar PV and battery  storage with the existing system to give the proposed optimal PV/DG/battery system capable of meeting the electricity demand with an  annual average solar radiation of 5.49 kWh/m²/day has reduce the NPC by 76.95%($1,997,517.00) and the LCOE by 76%($0.218/kWh). The  study will serve as a blue print for the viability of generating electricity in promoting energy access, reduce emission and promote   sustainable development.