Popoola, O. T.Rabiu, A.B.Ibrahim, H.K.Ajao, K.R.Bamigboye, J.T.Idakwoji, I.T.2026-05-122026-05-122021Popoola, O. T., Rabiu, A. B., Ibrahim, H. K., Ajao, K. R., Bamigboye, J. T., & Idakwoji, I. T. (2021). Optimization of photovoltaic-wind hybrid system for electrifying University of Ilorin E-library. Adeleke University Journal of Engineering and Technology, 4(1), 55-66.2714 - 2450https://uilspace.unilorin.edu.ng/handle/123456789/18342The current paper presents the simulation of a PV-Generator-Wind hybrid power system to electrify University of Ilorin E-Library using HOMER (Hybrid Optimization of Multiple Energy Resources) software. Different performance analysis such as optimization and sensitivity is carried out by the software. Environmental and economic analysis is used to discuss the sustainability of the hybrid power system. Results from the analysis revealed that the hybrid system consisting of an 8.33 𝑘𝑊 photovoltaic (PV) panel, 6.5 𝑘𝑊 diesel generator, 6 kW wind turbine, a 6 𝑘𝑊 converter and 10 batteries is the optimal system in terms of Net Present Cost (NPC), Cost of Energy (COE), Initial Cost and Operating cost The system has NPC, COE. Initial Cost and Operating cost of US$58,404, US$0.358kWh, US$44,876 and US$1,046 respectively which is better than a diesel system which has a Net Present Cost of 𝑈𝑆$ 80,256 and a Cost of Energy of 0.492 𝑈𝑆$/𝑘𝑊ℎ𝑟. Results show that the hybrid system emits 2,104.35kg/yr of carbon dioxide (CO2), 5.19kg/yr of carbon monoxide (CO) and 4.23kg/yr of sulphur dioxide (SO2) while the diesel system emits 20,115.90kg/yr of CO2, 49.65kg/yr of CO and 40.40kg/yr of SO2. The emission of the hybrid system is an order of ten lower compared to diesel system indicating a lower greenhouse effect. Sensitivity analysis on diesel price and wind speed shows that with increasing diesel price, the NPC and COE the hybrid system increases whereas with increasing wind speed, 𝑁𝑃𝐶 and 𝐶𝑂𝐸 decreases. These results serve as a reference point for the design and installation of hybrid system for the building.enenewable energy systemHybrid SystemWind TurbineSolar PVHOMERArticle