Expert PSS®E Consulting & Model Development
We support equipment manufacturers (OEMs), independent power producers (IPPs), project developers and system operators with high-quality, reliable model development in PSS®E. Our expertise covers comprehensive power system studies, as well as custom user-defined models (UDM) including UDM migration between PSS®E versions, and long-term maintainable Fortran implementations.
Our PSS®E Expertise
Power System Studies
Comprehensive analysis and simulation services for transmission-level clients and large-scale utility projects, leveraging PSS®E as the industry standard platform.
User-Defined Model Development
Development of user-defined models for grid code compliance studies in PSS®E. Our models represent generation units and components with exceptional technical detail for national and international grid compliance.
PSS®E Services for Grid Integration & Compliance
Powering the Energy Transition with Advanced Power System Analysis
Energynautics delivers expert PSS®E consulting services for both transmission system operators managing grid stability and renewable energy developers navigating complex interconnection requirements.
For Transmission System Operators
- Renewable Hosting Capacity Studies – Determining maximum wind and solar integration while maintaining system security
- Dynamic Stability & Low-Inertia Analysis – Frequency and voltage stability assessment as inverter-based resources replace conventional generation
- Transmission Master Planning – Long-term grid expansion strategies using PSS®E steady-state and dynamic analysis
For Renewable Energy Developers & IPPs
- Grid Impact Studies – Mandatory load flow and contingency analyses for interconnection approval
- Reactive Power & Voltage Control Studies – Ensuring compliance with grid code Q/U requirements at the Point of Common Coupling
- Plant-Level Compliance Simulation – PSS®E Digital Twin development for LVRT/HVRT validation and Final Operational Notification
- Model Validation – Measurement-based verification of simulation accuracy, increasingly required by TSOs
From small islands to transnational grids – Energynautics provides expert guidance for the integration renewable energies into existing transmission infrastructure. With extensive experience across diverse projects, we tailor solutions to meet your specific system requirements. Learn more about our related services and projects:
Modelled Assets & Systems
Representation of Generation Units and Control Systems
Each model is developed in close cooperation with the customer, ensuring alignment with applicable grid codes and study requirements, and ensuring realistic and transparent simulation behavior in PSS®E.
- Our user-defined models reflect the dynamic behavior of a wide range of generation technologies and their associated control functions:
Photovoltaic (PV) Power Plants
- Detailed inverter and plant controller modelling
Wind Power Plants
- Turbine and farm-level control system representation
Conventional Generation
- Synchronous machines and governor systems
Battery Energy Storage Systems (BESS)
- Fast-response capabilities for critical grid stability services
Plant Controllers
- Advanced plant-level control and coordination
Fortran-based Development with Legacy and Modern APIs
All user-defined models are implemented in Fortran, following relevant modelling guidelines of system operators such as Fingrid, Australian Energy Market Operator (AEMO) and others. In response to the changes from PSS®E Version 35 to Version 36, we support both legacy and modern PSS®E APIs, ensuring seamless integration with different PSS®E versions.
Key Capabilities:
Technical Excellence
- PSS®E versions ≤35 and 36
- Fortran-based model development
- High numerical stability and performance
- Clear documentation and maintainable code
Comprehensive Services
- Development of new user-defined models
- Migration of existing models to newer PSS®E versions
- Adaptation of models to evolving grid code requirements
Why Work With Us?
Reliable Models for Reliable Studies
- Deep Power System Understanding: Proven expertise in complex PSS®E simulation environments
- Grid Code Expertise: Following guidelines from Fingrid, AEMO, and international standards
- Clean, Structured Code: Well-documented Fortran implementations built for longevity
- Future-Proof Solutions: Focus on long-term usability and version compatibility
- Collaborative Approach: Close partnership with your engineering teams
- Proven Track Record: Supporting OEMs, developers, IPPs and system operators
Our Multi-Platform Modelling Expertise
Energynautics provides expert power generating unit modelling across all major simulation platforms, such as DIgSILENT PowerFactory, PSCAD, PSS®E, and MATLAB/Simulink. We combine advanced modelling tools with deep knowledge of generation technologies, manufacturer specifications, and certification requirements.
- Discover our complete modelling service portfolio and explore related project examples.
To contact our experts directly, please use the contact form or send a massage to the following email: info@energynautics.com.