Hydro Backed-up Hybrid Renewable System for Off-grid Power in Nigeria

This paper reports on a hydro backed-up (HPBU) hybrid renewable energy system (HRES) for rural off-grid community in Kwara State Nigeria with an average demand load of 550.9 kWh (90.7 kW peak) per day. By using HOMER Pro software, the formulation and identification best reliable architecture attaining technical economic viability while nearby existing RE sources such as hydro, wind solar are appropriately modelled optimized based minimal net present cost (NPC) (COE). It was determined that three feasible configurations HPBU-HRES site have annual output ranging from 1,642,979 – 1,749,272 kWh/yr electricity (COE) range 0.34 0.64 $/kWh. The optimal (system 1) is combination 184 PV (PV), 4,545 battery capacity (BB), 81.3 converter (Conv) 277 generation (HPP). A comparison study undertaken to illustrate benefits studied systems shows about 288,116, 88,342 53, 88 kg/yr CO2 savings possible against diesel only, grid extension first equivalent engine (DEBU) respectively. In furtherance study, sensitivity analysis likely variation associated metrological parameters, components undertaken. Outcomes show 1 (PV/HPP-BB) small medium loads (?600 kWh/day), irrespective radiation. addition, it established decrease system’s total initial by half will lead decline COE $0.177 at corresponding NPC $3,029.