In this study, technoeconomic analyses and environmental comparisons of various hybrid systems that will ensure that electricity needs are met independently of the grid of Köyceğiz district of Mugla, which has a population of about 40,000, were made. The unit energy cost of the hybrid energy system consisting of Solar Panel-Wind Turbine and Battery, which is planned to meet the electricity needs of the district with an average daily electricity consumption of 150,000 kWh, has been made net present value calculations. Homer (Hybrid Optimization Model for Electric Renewable) program was used to make these analyses. During the evaluations, various parameters (generator working load, wind turbine tower height, battery operating intervals, etc.) were changed for the system to be installed and sensitivity analyses were made. As a result of the study, the unit energy cost of the system, which can be installed independently of the grid, was calculated as $0.182/kWh. Environmentally renewable and sustainable is the positive side of these systems. In addition, it has been observed that the cost decreases when parameters such as fuel cost, discount and inflation rates change.