Psse Latest Version [2021] -

Select the PSS®E tab to find the most recent executable and release notes.

Using the new MMC-HVDC model and GPU contingency analysis, they performed 22,000 N-1-1 contingencies across a North Sea grid model (28,000 buses) in under 90 minutes – previously a 14-hour overnight job.

| Feature | PSSE 35.9 | PSLF (GE) | PowerWorld 23 | DIgSILENT 2025 | |---------|-----------|-----------|---------------|----------------| | Max bus count | 1M+ | 500k | 200k | Unlimited | | Python API | Native (3.11) | Limited | Good | Excellent | | Grid-forming IBR models | Yes (IEEE 2800) | Partial | Partial | Yes | | Parallel dynamics | Yes (CPU) | Yes | No | Yes (GPU/CPU) | | EMT in RMS | No (standalone) | No | No | Yes (built-in) | | CIM import/export | Good | Basic | Good | Excellent | | Licensing cost (annual) | ~$25k | ~$15k | ~$8k | ~$30k |

As of April 2026, the latest generally available stable release is . (Note: Version 36.0 is under limited release or beta testing with select partners; widespread commercial deployment is expected later in 2026.)