PSS/E (Power System Simulation for Engineering) is a widely used software tool for power system analysis and simulation. Developed by Siemens, PSS/E is used by power system engineers and planners to design, operate, and optimize power systems. The latest version of PSS/E is PSS/E 35.4, which was released in 2022. In this article, we will explore the new features and enhancements in PSS/E 35.4.