Gas turbine life and efficiency depend on the operating environment and material performance. Material selection is of prime importance to achieve high life and efficiency. This paper focuses on the study of the effect of material properties and variation in alloy composition ofa high-pressure turbine blade on gas turbine life when works in the flexible mode as a pick-up of renewable sources.A tool has been developed wherein different scenarios can be simulated to obtain engine life consumption factors. The engine life is examined according to the different material for different operating scenarios. It is observed that blade life is highly affected by changing material properties and moreover it is noted that the small change in the mass percentage of some constituent elements of an alloy results in a significant difference in HPT blade life
