As of April 2026, the latest major release of Siemens PSS/E (Power System Simulator for Engineering) is Version 36, with Version 37 planned for release later this year. Major industry entities like AEMO and Hydro-Québec are currently transitioning to Version 36 to address the security risks and performance limitations of older versions. Key Improvements in Version 36
The current version focuses heavily on long-term compatibility and modernizing automation workflows:
Version Independent (VINDP) Dynamic Models: A standout feature allowing users to create dynamic Linked Library (.dll) files that will be compatible with all future PSS/E versions. This removes the historical "pain point" of having to recompile custom models for every new software release.
Built-in Model Conversion: An automated tool that upgrades existing dynamic model source code into the new version-independent format.
Python 3 Integration: Unlike Version 34, which relied on the deprecated Python 2.7, Version 36 uses current Python 3.x standards for its 2,000+ open APIs, improving both security and productivity.
Hybrid Cloud Module: Introduced in version 36.2.0, this allows for scalable on-demand computation and secure remote collaboration.
Enhanced Performance: Supports network models up to 200,000 buses with "lightning-fast" steady-state contingency analysis. Version Lifecycle Status (2026)
Siemens has established a clear support roadmap for the year: PSS®E Version 36 - Siemens
Report: Siemens PTI PSS®E (Power System Simulator for Engineering) – Latest Version Analysis psse latest version
Date: May 24, 2024 Subject: Current Version Status, Features, and System Requirements
If you are still running PSSE 33 or 34, here are four compelling reasons to upgrade to version 35.2:
PSS®E is proprietary software sold by Siemens Digital Industries Software.
PSS®E 37 Program Manual and Application Guide are available in PDF format within the installation directory or the support portal.Previous versions (32-bit) were limited to 4 GB of RAM, causing crashes when simulating large networks (over 20,000 buses). PSSE 35.0+ is fully 64-bit, allowing access to terabytes of RAM. This means you can run:
The single biggest change in the latest PSSE is the native handling of Type 4 Wind and Grid-Forming (GFM) Inverters.
Older versions required cumbersome workarounds (USER models or Python hacks) to simulate the "fast" dynamics of inverters. The new version introduces native GFM models that correctly simulate:
Why it matters: If you try to simulate a 500 MW solar plant using synchronous machine models, your transient stability results will be wrong by an order of magnitude. Version 35 fixes this physics gap.
PSS®E Version 37 represents the current state-of-the-art for transmission planning. The move toward seamless Python integration and enhanced IBR modeling reflects the industry's shift toward automation and decarbonization. For existing users on v35 or v36, upgrading to v37 is recommended to ensure compatibility with the latest dynamic models required for renewable interconnection studies. As of April 2026, the latest major release
Disclaimer: Siemens often releases minor patches and "Service Packs" that adjust version numbers (e.g., v37.0.1). For the precise absolute latest sub-version number, users should log into the Siemens Support Center.
The latest primary version of PSS®E (Power System Simulator for Engineering) Version 36 , released by Siemens PTI
as a major advancement in transmission planning and analysis. This version marks a significant shift in the software's architecture, specifically designed to address modern grid challenges like renewable integration and cybersecurity. Key Features of PSS®E 36
The transition to Version 36 introduces several critical improvements over previous versions like V34 and V35: Version-Independent Dynamic Models
: V36 utilizes model source code and DLLs that are version-independent. This means engineers no longer need to recompile models every time the software is updated, significantly streamlining long-term maintenance. Built-in Model Converter
: To ease the transition, V36 includes an automated converter program that updates existing dynamic models from older formats to the new V36-compatible architecture. Modernized Automation
: Unlike V34, which relied on the deprecated Python 2.7, V36 is built for modern Python™ environments
, offering over 2,000 open APIs for intelligent automation of complex grid studies. Enhanced Renewable Support Download Portal: Licensed users can download the latest
: The software is specifically optimized for modeling advanced technologies, time-series data, and harmonic behavior to support the rapid increase in renewable energy scenarios. The Industry Transition (AEMO Case Study) Large-scale operators, such as the Australian Energy Market Operator (AEMO) , have initiated mandatory transitions to PSS®E 36.
: AEMO's transition period began in August 2025, with full industry-wide adoption expected by Drivers for Change
: The primary drivers include the end of support for V34 (October 2024) and the security risks associated with older Python versions used in previous releases. Core Capabilities & File Formats
PSS®E continues to be the "industry standard" for a wide range of analytical functions: PSS®E Version 36 - Siemens
| Component | Specification | |-----------|---------------| | OS | Windows 11 Pro / Windows Server 2022 (Linux via container) | | CPU | Intel Xeon Gold or AMD EPYC (16+ cores) | | RAM | 64 GB (128 GB for >50k buses) | | Storage | 1 TB NVMe SSD | | GPU | NVIDIA Quadro or A-series (optional, for sparse solvers) | | Software | Python 3.11, .NET 7.0 |
To ensure your organization is not falling behind, follow these steps:
35.8.0 Build 123.Pro tip: Even within the "latest" version, Siemens releases monthly patches. Version 35.8 includes critical fixes for state estimation divergences that existed in 35.0.