Capacity Calculation Methodology

ATC Extraction Description - Published 10 May 2022

Long-Term Capacity Calculation Methodology

Approved Methodology for Long-Term Capacity Calculation (ACER decision 16/2019)

Annexes to the ACER decision on Long-Term Capacity Calculation Methodology)

Day Ahead and Intraday Capacity Calculation Methodology

The National Regulatory Agencies (NRAs) in Denmark, Finland and Sweden have each approved the amended Methodology for Day Ahead and Intraday Capacity Calculation. The NRAs have made their decision in their own national language.

For Denmark:  Forsyningstilsynet decision 20/05093. For the NRA decision, supporting and legal document, please visit the website of the Danish Utility Regulator (Forsyningstilsynet)

For Sweden: Energimarknadsinspektionen decision 2020-102099. For the NRA decision, supporting and legal document, please visit the website of the Swedish Energy Markets Inspectorate (Energimarknadsinspektionen)

Overview of the implementation process in the Nordics

Day Ahead and Intraday Capacity Calculation Methodology

The implementation timeline for a flow-based method for capacity calculation is dependent on successful parallel runs and confirmation from the Nordic NRAs. The parallel operations have been divided into phases (parallel runs).

Each phase has TSO-defined entry criteria, based on the guidance from NRAs. The entry criteria for the EPR start have been set. Entry criteria for each phase is the same as the exit criteria for the previous phase. More information on the criteria for the External parallel run (pdf)

According to stipulated timeline, the external parallel operation must last for at least 12 months. The NRA reporting consists of three month of data.

Please note that the parallel run will generate data that can used as a basis to facilitate the adaptation of planning tools and/or business processes of all stakeholders concerned.

Overview of the approval process

Long-Term Capacity Calculation Methodology

  • October 30, 2019 – ACER decision to approve the Nordic LT CCM (Decision 16/2019)
  • May 15, 2019 – Nordic NRAs referred the LT CCM to ACER
  • January 16, 2019 – The Nordic TSOs submitted the LT CCM to the Nordic NRAs

Day Ahead and Intraday Capacity Calculation Methodology

  • October 14, 2020 – The Danish, Finnish, and Swedish NRA agreed to approve the amended DA/ID CCM. The NRAs have amended the implementation timeline in Article 26 of the legal document.
  • April 20, 2020 – The TSOs of the CCR Nordic amended the DA/ID CCM, in line with ACER’s decision on the LT CCM and submitted it to the Nordic NRAs. This amended DA/ID CCM was to replace entirely the earlier versions of the DA/ID CCM.
  • October / November 2019 – The Danish, Finnish, and Swedish NRA agreed to approve the amended DA/ID CCM
  • June 20, 2019 – Amended DA/ID CCM submitted by Energinet, Fingrid, and Svenska kraftnät.
  • December 20, 2018 – The Danish, Finnish, and Swedish NRA issued a request for amendment for the DA/ID CCM
  • July 16, 2018 – The Nordic NRAs approved the DA/ID CCM.