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Modelling instructions

This page contains the up to date modelling instructions for simulation models submitted to Fingrid, as well as model test lists and other modelling related documents and publications. Previous versions are available under the "Previous versions" section on this page.

The required PSS/E and PSCAD simulation models are used for verifying the compliance of facilities and as part of wider power system studies.

The modelling instructions define the technical characteristics and functionalities that simulation models must include, the required level of modelling accuracy, and the documentation that must be submitted.

Fingrid verifies that all submitted simulation models comply with the applicable modelling instructions. To improve the transparency of this process, Fingrid has also publishes the test lists that specify in tabular form the minimum checks performed on the models, the methods used for those checks, and the acceptance criteria applied. The test list applicable to a simulation model depends on the grid code requirements applicable to the project (VJV, SJV, KJV).

Publications

Hybrid power plant model testing guidance 10.9.2026:

Fingrid has published a guideline defining the scope of testing for hybrid power plant PSS/E and PSCAD simulation models as part of the requirements verification process. The guideline covers the most common control logics used in hybrid power plants. The guideline is available here: Hybrid power plant model testing guidance

In addition to the guideline, separate PSS/E and PSCAD test lists have been published, these are available under the "Power generating facilities and grid energy storage systems" section on this page.

Modelling instructions update 13.3.2026 - Data Centers

Fingrid has published instructions for the PSS/E and PSCAD simulation models submitted as part of the grid compliance monitoring process for data centers. The instructions are available under the "Demand Facilities (Data Centers)" section on this page.

Modelling instructions update 10.2.2026 - Power generating facilities and grid energy storage systems

Fingrid has published updated instructions for the PSS/E and PSCAD simulation models submitted as part of the grid compliance monitoring process for Type C and Type D power generating facilities and grid energy storage systems. For power generating facilities, the instructions apply only to power park modules. The updated instructions are available under the "Power generating facilities and grid energy storage systems" section on this page.

A more detailed description of the projects to which the updated instructions apply is available here: Application of modelling instructions effective from 10 February 2026 in projects

Implementation of PSS/E 36

Fingrid is transitioning to the latest version of PSS/E, version 36. All submitted PSS/E models shall be compatible with PSS/E version 36, in accordance with the following document: Implementation of PSSE 36 version in Fingrid

Details

mallinnus@fingrid.fi