Leo used the Python API to run a series of dynamic simulations. He wasn't just looking at the grid as it was; he was looking at every possible future.

Developed by Siemens PTI (Power Technologies International), PSS®E is a software package used for the simulation, analysis, and optimization of electrical power transmission systems.

But what exactly makes it so critical, and why do thousands of engineers worldwide rely on it daily? What is PSSE Software?