In this study, the total installation cost was calculated with the selection of solar panels (PV) to be used, Control Monitoring System, number of inverters when applying solar energy from renewable energy sources to Kars Airport in order to obtain a clean environment and clean energy. According to the latest two-year data obtained with the permission of the institution from Kars Harakani Airport Electricity Distribution, the total electricity consumption was calculated by the amount of electricity produced by the SPP project. In the continuation, the cost analysis tables are given when there is an overdraft and non-credit installation with the amortization time required for installation. For installation, statistical data on annual hours of sunshine and rainy days were taken from the General Directorate of Meteorology of Kars province. As a result of calculations; since the service life of a SPP project is 25 years; when the entire project is made without credit,the installation cost of TL 19,917,859.75 ($2.706.157,41) pays off in 4.5 years and the remaining amount of electricity sales earned in 20.5 years is 547,535,115. 02 TL ($74,391,336. 52 ) . It was found that when the entire loan was established, it paid off in 8 years. From these calculations, if the airport uses an overdraft system, it will pay off in about 8 years and the system will generate and sell its own electricity for 17 years . It was calculated that it would have a profit of 495.177.856,89 TL ($67,277,771. 92 ). For the non-credit SPP project,it was found that it will provide an added value of 547.535.115, 02 TL ($74,391,336. 52 ) to the institution, where it can pay off in 4.5 years and produce and sell its own electricity for 20.5 years.