The main goal of the project is the creation of a predictive model in steady state operating conditions for an industrial gas turbine used for generator drive applications. Flow path Meanline (1D) and Streamline (2D) analyses are performed using AxSTREAM software, in order to obtain integral turbomachinery information (power, efficiency, mass flow rate) as well as distribution of kinematics and thermodynamics parameters in both streamwise and spanwise directions. The latter represent the set of boundary conditions to implement in a thermo-structural Finite Element Analysis (FEA) useful for rotor components lifetime evaluation. First, an estimate of the flow rates involved, and power generated by the turbine is made.