This search was carried out in order to generate electricity small capacities especially in remote locations far from the electricity grid. the search includes a thermal analytical study of mini radial turbine which represents the Expander in Organic Rankine Organic Cycle (EES). In this search, the selection multiple parameters and study the effect of each parameter on the outlet of the mini turbine using the program EES (Engineering Equation Solver) was done using several working fluids to drive a mini turbine, and We have conducted a comparison between them and determine the best impact on the outlet of the mini turbine.