Nordic TSOs' proposal on FRR dimensioning

Closed 1 Apr 2022

Opened 1 Mar 2022


This consultation concerns the amended proposal of all Nordic TSOs for the Nordic LFC block methodology for FRR dimensioning in accordance with Article 157(1) of the Commission Regulation (EU) 2017/1485 of 2 August 2017 establishing a guideline on electricity transmission system operation (SO Regulation). 

The Nordic Balancing Model (NBM) and the connection to the European platforms MARI and PICASSO are the triggers for the proposed amendments to the methodology. The proposed dimensioning rules, when approved, will be used when the Nordic system connects to PICASSO and is operating an ACE based system as an integral part of the European reserve market.

The common proposal of the Nordic TSOs can be found below under the Related Documents.

Why your views matter

The proposal is subject to public consultation according to article 11 of SO Regulation.

What happens next

The TSOs of the Nordic LFC block shall duly take into account the views of stakeholders resulting from the consultation and use them to prepare the final version of the document that will be submitted to the Nordic NRAs.

In all cases, a sound justification for including or not the views resulting from the consultation shall be provided together with the submission of the proposal and published in a timely manner before, or simultaneously with the publication of the amended proposal on FRR dimensioning.


  • Webinar on updated methodology for FRR dimensioning for the Nordic LFC block

    From 25 Mar 2022 at 13:00 to 25 Mar 2022 at 15:00

    The purpose of this webinar is to explain the changes in the methodology and the reason behind the update.

    Registration to the webinar by email to Per Lantorp (


  • ENTSO-E stakeholders
  • Electricity balancing actors


  • Market Network Codes
  • System Operations Code