Abstract: The feasibility study of using hybrid energy systems for electricity generation in rural communities in Ondo state in the South-West of Nigeria is investigated in this study. Renewable resources (wind and solar) data in Akure which is the capital of the state is used as case study. Akure is located on the latitude of 7.25°N and longitude 5.20°E. The effect of diesel price, changes in wind speed and daily global solar radiation on optimal hybrid energy system and the cost of a unit of electricity were studied. Hybrid Optimization Model for Electric Renewable software has been employed to carry out the present study. It is found that wind-PV-diesel hybrid system is feasible as stand-alone electricity generating system in Ondo state. The optimal simulation results indicate that the levelised cost of energy varies between $0.578 and $0.682 kWh^-1 depends on the system configuration and diesel price. These costs are significantly lower than the cost of using diesel generator only (without battery) which varies between $0.913 and $1.319 kWh^-1.