Introduction of new technical requirements for frequency containment reserves

For several years Nordic TSOs have been developing new technical requirements for Frequency Containment Reserve for Normal Operation (FCR-N) and Frequency Containment Reserve for Disturbances (FCR-D). The aim with the new technical requirements is to harmonize the requirements in Nordic countries and to upgrade the requirements to meet the needs of the changing power system. 

The most essential feature of the new requirements is the requirement for stability and performance of the reserve providing entity. The performance requirement ensures that the reserve providing entity can react fast enough to the changes in the system frequency. The stability requirement ensures that no uncontrollable oscillation is caused in the system frequency. 

During 2021 the new technical requirements are being tested with real reserve providing units as part of the pilot phase for the introduction of the requirements. The pilot phase will start on 15 June and will last until the end of 2021. More information about the pilot phase can be found from our news article (available only in Finnish) concerning the pilot phase. The Nordic TSOs aim to start the implementation phase of the new requirements after the pilot phase, during 2022. 

The new technical requirements are described in the document Technical Requirements for Frequency Containment Reserve Provision in the Nordic Synchronous Area. Supporting material considering the new requirements can be found in the document Supporting Document on Technical Requirements for Frequency Containment Reserve Provision in the Nordic Synchronous Area. Beforementioned documents will be updated based on the feedback received and knowledge gained during the pilot phase.