Pumped storage hydropower plants (PSP) play a crucial role in energy storage, load balancing, grid stability, integration of renewable energy, peak power generation, and long duration of storage. A major component in a PSP is Pump as Turbine (PAT) which has lower efficiency compared to a conventional turbine during turbine mode operation. This is because a PAT is primarily designed for working as a pump around a narrow range of operating conditions. Thus, the operation of PAT in turbine mode leads to low efficiencies, flow instabilities, etc. To improve the pump as well as turbine performance characteristics of a PAT, one of the most influencing parameters is the blade profile. The optimization of the blade profile can lead to better characteristics of a PAT; however, blade profile optimization often leads to thin sections in the profile which are prone to failures due to stresses during operation. Here, a stress analysis is considered on the blade profile of a PAT, and specific failure zones were identified. In the failure zone, the blade profile was mod ified to reduce the stresses while optimizing the performance using Solid Works and Ansys software. In the Solid Works simulation, the maximum value of pressure observed on the blades was 0.5 MPa during pump mode operation. This study will be useful in enhancing the overall efficiency of a PSP as their role in integrating renewable energy storage is going to be critical in the future.