29.5.2023 11:00
Current News, Power System

New technical requirements for Frequency Containment Reserves released

The Nordic TSOs have developed new technical requirements for the Frequency Containment Reserve for Normal Operation (FCR-N) and Frequency Containment Reserve for Disturbances (FCR-D). The purpose of the new requirements is to address the needs of the developing power system and to harmonize the requirements in the Nordics. Based on the new requirements the Nordic TSO have prepared new and updated material for the prequalification process.

On April 3rd the Nordic national regulatory authorities approved the TSOs’ amended proposals regarding FCR additional properties and dimensioning in accordance with the transmission system operation guideline (SOGL). The proposals describe the main parts of the new technical requirements.

The Nordic TSOs have developed material to support the prequalification process. You can see an overview of the material with a short description below.

  • Technical requirements document – Detailed description of the technical requirements and the prequalification process.
  • Prequalification tool – An application used to evaluate the prequalification tests.
  • User manual for the prequalification tool – Supporting document to the prequalification tool.
  • Tuning guideline – Supporting document related to the tuning of units.

As a remarkable change compared to the earlier draft version of the technical requirements, the published version includes finalized requirements for limited energy reservoirs.

During the implementation process of the new requirements, the TSOs will continue to update the requirements document and supporting material as needed based on stakeholders’ feedback and experience gained from the prequalification tests.

The TSOs of Sweden, Finland and Denmark have agreed that the new technical requirements shall enter into force on September 1st, 2023. In Norway the requirements will enter into force in the beginning of 2024. Balancing service providers may prequalify towards the new requirements starting from today. Existing units and groups prequalified for FCR shall transition towards the new requirements at the latest when their current prequalifications expire.

Material on the new technical requirements has been published on the webpage for the implementation of the new requirements. The prequalification tool, user manual and the tuning guideline will be added during the week 22.

Further information: 

Pia Ruokolainen, Fingrid, tel. +358 30 395 5105 

Mikko Kuivaniemi, Fingrid, tel. +358 30 395 5188 

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