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14 April 2025: Nordic CCM Stakeholder Event – Video Recording Now Planned
The Nordic TSOs would like to inform you that the upcoming Nordic CCM Stakeholder Event on Long-Term Capacity Calculation (LT CC), scheduled for Tuesday, May 6, will now be recorded and made available online.
Originally, the event was not planned to be recorded. However, considering several parallel events relevant to stakeholders—including the publication of the Bidding Zone Study Report and its webinar, as well as the Nordic Electricity Market Forum— the Nordic TSOs have decided to proceed with the stakeholder event on May 6 as scheduled, and to offer the video recordings of the event to facilitate the stakeholder involvement.
To ensure transparency and accessibility, all presentations will be recorded, and the videos will be published on the Nordic RCC website. The Nordic CCM project will notify stakeholders as soon as the recordings are available online.
We thank you for your continued engagement and look forward to your participation.
01 April 2025: Nordic TSOs Adjust ATCE Relaxation Parameters: Trial for Increasing Intraday Capacity
The Nordic TSOs took note of the stakeholders’ request to have more capacity in the ID timeframe. Though the starting point cannot be altered – i.e., the ID gate-opening capacity is the leftover capacity from the DA timeframe – the TSOs are willing to test in production whether more additional capacity can be released to the ID market, while monitoring the impact on real-time operations. The increase of this additional capacity (i.e., capacity that goes beyond the DA FB domain) can be obtained by increasing the ATCE relaxation parameters (see also: ATC Extraction Description). The TSOs will apply a 3% z2zPTDF relaxation in production instead of the 2% z2zPTDF relaxation that is applied today. The new relaxation parameters will be introduced on May 1, 2025, i.e. Energy Delivery Day on May 2, 2025. The TSOs propose to test the new ATCE relaxation parameters over a two-month period. If the TSOs identify operational security risks in real-time operations due to this increased provision of additional capacity in the ID timeframe during the test period, the TSOs will return to the current ATCE relaxation settings within one week and inform the market accordingly. If no operational security risks caused by the increased relaxation parameters are identified within those two months, the 3% z2zPTDF ATCE relaxation parameters will continue to be used.
14 March 2025: FG will update flow-based CNEC list
Fingrid will update its CNEC/combined dynamic constraint list in accordance with the Nordic CCM Articles 5 and 6.
Fingrid will include a new recently introduced transmission line in the grid model and therefore also to flow-based calculation input. That will mean addition of new CNECs as a result of the line (CNE) and the respective contingencies combined.
This makes the P0 PTC (combined dynamic constraint) unnecessary, as from now on the limiting factor will be thermal limit also in outage situations. It means that dynamic-based limitations do not exist anymore (on P0-cut) and thus having PTC is no longer needed. Therefore, Fingrid will exclude P0 PTC from the flow-based calculations. The market impact of the changes is expected to be minimal/small. We base this statement in observation that P0 PTCs have rarely been limiting the domain before and therefore one could not expect anything but minimal impact due to the change. Validation for the observation can be derived from JAO platform (PuTo Nordic CCR) publication history by looking how often the PTCs (to be excluded) have fulfilled the following condition: NonRedundant=TRUE.
As a repetition, the change is based on a topology change as we got a new physical line to support P0-cut flow. Thus, impact is considered to be only positive, in terms of initial capacity for the FI BZ internal flows. The changes will be effective in the flow-based domain from EDD 24.04.2025.
The file below shows the exact list of CNECs and PTCs changes:
CNEC & PTC updates Fingrid 22-04-2025
This message was also published on NUCS (https://www.nucs.net/) in shorter version.
24 Jan 2025: Svk will update flow-based FRM values
Svk will adjust the safety margin (RM) on selected critical grid elements in accordance with the Nordic CCM Article 3.
The change means that FRM values change from 5-10% of the maximum capacity of the grid elements to 3-12% based on operational experience after Go-Live on 31 October 2024 and methodological calculations for the safety margin. New critical grid elements will get a default FRM of 10 % of Fmax. These new safety margins ensure adequate risk levels for operational security. The market impact is considered to be limited as a consequence of the simultaneous discontinuation of the daily IVA application that Svk have performed since November 2024. The change will be implemented in the flowbased calculation from EDD 25.02.25.
Svk aims to continuously monitor and update the FRM values according to the Nordic CCM. We are closely following the results from the flowbased market coupling and gaining operational experience. We are also continuously improving our tools, models and data.
In addition, Svk is continuously updating IVA values to manage risk. With the current flows, the desired flows can be controlled using IVA on 7 of the 33 CNECs, marked in green in the image below.
The graph below shows the new FRM levels for the 33 critical grid elements:
This message was also published on NUCS (https://www.nucs.net/).
16 Dec 2024: Impact of Statnett's upcoming FRM changes
Statnett is planning a flow reliability margin (FRM) update on several of the input CNECs for the flowbased market coupling, ref. market message published by Statnett 26.11.2024. The FRMs will be changed from 5% of Fmax to the range of 5%-14%, with an average around 7%. New CNECs, including those introduced after the referenced market message, will get a default value of 10%.
The introduction of flowbased market coupling has resulted in an increased utilization of the Nordic grid. Over the weeks since go live forecast errors and flowbased model uncertainty have regularly caused demanding congestions in operations and proved the need for increased operational margins. The planned FRM update will not cover all such cases but lower the risk of overloads and provide somewhat larger margins to cover more extreme cases of errors than we have observed so far.
Although the FRM update is necessary for operational security, we expect smaller impact on the market capacities, as the flowbased algorithm is designed to search for alternative solutions that might be nearly as good as those calculated with lower margins. Variations in other parameters, such as temperature and wind, have a larger impact on the market capacities than the coming FRM update. However, some reductions in allowed market flow are expected. Some of the CNECs with observed shadow prices will get an increased margin, including the NO2-NO5 interconnector.
Statnett will need some time to adjust the FRMs to the correct level. We are closely following the results from the flowbased market coupling and gaining operational experience. We are also continuously improving our tools, models and data. Altogether, this is expected to lead to a lower average value in future FRM updates.
A link to this message has been published on NUCS (https://www.nucs.net/).
28 Nov 2024: New tool in operation for the ATC extraction
(Updated on Jan. 28 with new expected go-live date for the ATCE tool)
The Nordic TSOs aim to take the new tool in operation by the 25 February 2025 with the first calculation performed on 26 February for EDD 27 February.
(Updated on Dec. 20 with link to re-calculation results)
Nordic TSOs are switching to a new tool in operation for the ATC extraction (ATCE) process. The new tool is introduced as part of the preparations to the transition to 15 minutes resolution in the intraday and day ahead markets during spring 2025. The new tool for ATC extraction includes a few refinements over the current tool.
With this message, in accordance with the Article 20(5) from the Nordic DA and ID CCM, we would like to inform you about this change in the ATCE tooling.
The refinements to the ATCE tool include:
- Fix of bug that causes ATC extraction to fail for some instances when HVDCs with implicit loss factor experience negative NTCs
- Fix of issue with “double counting” of internal Nordic HVDC borders in the objective function (e.g. NO2-DK1)
- Fix of error in exclusion of borders that are not active for intraday trade (NO4-FI and Baltic Cable)
- Added functionality for eliminating quarter hourly polarity reversals on certain HVDCs (only relevant for certain HVDCs and only after 15 minutes go-live)
ATCE results produced with the new tool will be provided for comparison for the interval from 7 October to 7 December. Results will be available Nordic RCC homepage after 7 December. No major changes for the ID capacities have been observed so far and are expected from this new implementation.
Link to re-calculation results
26 Nov 2024: Statnett will update flow-based FRM values
Statnett is going to change input parameters for the flow-based calculation to handle system operations safely. Statnett will change the FRM values in the range 5% to 14 % of Fmax. New CNECs will get a default FRM value of 10 % of Fmax. The change will be included in the flowbased calculation from EDD 21.12.24.
This message was also published on NUCS (https://www.nucs.net/).
The file below shows the exact FRM values that will be implemented along with the mrID for each CNEC.
New FRMs Statnett 26-11-2024
1 Nov 2024: Successful go-live of the Nordic Flow-based Market Coupling project
The project parties involved in the day-ahead Nordic Flow-Based Market Coupling project are pleased to announce the successful go-live of the project on 29/10/2024, (first trading day for delivery on 30th October 2024). The successful go-live of Nordic Flow-Based Market Coupling is the result of the close cooperation between all involved NEMOs, TSOs, Nordic RCC and regulatory authorities.
Please direct any questions about this matter to Erik Ek, Chair of the Nordic Flow-Based Implementation Project through the Svenska kraftnät press office. Phone: +46 10 475 80 10, e-mail: press@svk.se.
11 Oct 2024: Nordic Flow-Based Market Coupling Project confirms Go-Live for 29th October 2024
The Nordic project parties are pleased to inform that final tests between the involved TSOs, NEMOs and RCC have been completed successfully, and the project will go live on October 29th, 2024. (first trading day for delivery on 30th October 2024).
Please direct any questions about this matter to Erik Ek, Chair of the Nordic Flow-Based Implementation Project through the Svenska kraftnät press office. Phone: +46 10 475 80 10, e-mail: press@svk.se.
7 Oct 2024: Nordic TSO response to the letter received from NordREG on July 1 2024
On July 1, the Nordic TSOs received a letter from NordREG: “… NordREG would therefore request the Nordic TSOs to assess and investigate the ID ATCE approach and the risks more thoroughly, and report to the regulatory authorities on how the described issues and risks could be minimized or corrected… NordREG requests the TSOs to deliver a report to NRAs within 3 months after receiving this letter.”
NordREG Letter to Nordic TSOs on ID ATCE - Final 20240701
To respond to the NRA request, the Nordic TSOs drafted a report on the functioning of ATCE, where the two questions related to ATCE functioning are placed in the Annex 1 and 2.
29 Aug 2024: Nordic Flow-Based Market Coupling Project Go-Live set for 29th October 2024
As communicated earlier, the planned go-live for Nordic Flow Based Day Ahead Market Coupling was set for October 2024.
The Nordic project parties are intensively preparing for the Go-Live and only the final tests are remaining. Pending successful completion, the project will go live on October 29th, 2024. (first trading day for delivery on 30th October 2024).
Please direct any questions about this matter to Erik Ek, Chair of the Nordic Flow-Based Implementation Project through the Svenska kraftnät press office. Phone: +46 10 475 80 10, e-mail: press@svk.se.
7 Nov 2023: Nordic Flow-based Market Coupling Go-live Expected October 2024
As previously communicated by project parties 27th September 2023, the intended go-live in Q1 2024 of the Nordic Flow-based Market Coupling, has been reassessed and deemed as unachievable. This is due to the complexity of the development and alignment of the various Nordic IT systems and processes which are needed to implement Nordic Flow-based in the European Single Day-Ahead Market Coupling (SDAC).
Since the last communication, project parties have been working together to develop an updated Nordic implementation timeline. As next step, this new timeline will be discussed at European level, to establish a joint timeline coordinated with the other on-going regional and European implementation projects.
The Nordic project parties now expect to be able to go-live with Nordic Flow-based Market Coupling in October 2024, pending successful testing and technical readiness of project parties. Market participants will be regularly updated on the planning around this new projected date during upcoming stakeholder events and through news releases, as appropriate.
The project parties have decided to continue the External Parallel Run until go-live to achieve even more experience/knowledge about the Flow-based Marked Coupling.
Please direct any questions about this matter to Erik Ek, Chair of the Nordic Flow-Based Implementation Project through the Svenska kraftnät press office.
Phone: +46 10 475 80 10, e-mail: press@svk.se.
27 Sep 2023: Go-live of Nordic Flow-based Capacity Calculation delayed
The Nordic TSOs, NEMOs and RCC have jointly agreed to temporarily postpone the planned implementation of flow-based capacity calculation in the Nordic Region. A revised timeline for flow-based go-live will be issued in November 2023.
The reason for this delay lies in the unforeseen complexity in development and alignment of all the various IT systems and processes required to implement flow-based capacity calculation and allocation.
We are currently investigating the implementation timeline and External Parallel Run continuation, as well as other relevant dependencies to allow a re-planning of the flow-based timeline.
An update will be provided in early November.
Please direct any questions about this matter to Erik Ek, Chair of Nordic Flow-Based Implementation Project through the Svenska kraftnät press office. Phone: +46 10 475 80 10, e-mail: press@svk.se.
13 Jul 2023: NRA confirmation for continued flow-based implementation
The Nordic NRAs have confirmed the continued implementation of flow-based capacity calculation methodology. At the same time, the NRAs conclude that they expect additional actions for the upcoming 6 months of EPR to address remaining open issues beyond the established KPIs.
The Nordic TSOs are pleased to inform stakeholders that the Nordic NRAs on July 12 confirmed the Nordic CCM External Parallel Run Evaluation Report and the continued implementation of flow-based capacity calculation (FB) in the Nordics.
For the upcoming 6 months of EPR, the NRAs have requested that the TSOs investigate and elaborate on open issues beyond the KPIs addressed in the EPR report. The NRAs particularly stress the importance of clear and transparent stakeholder communication, to follow up on stakeholders’ FB related questions and remarks, to provide increased learning about the concrete impact of the transition to the FB methodology and as well as explain the EPR results.
The NRAs further request that the TSOs extensively communicate the progress to the Nordic NRAs and the stakeholders during the upcoming months of EPRs, both via regular stakeholder seminars and in meetings with the Nordic NRAs.
The Nordic TSOs acknowledge the concerns expressed by stakeholders and are committed to continuous quality improvement, giving special attention to fulfilling the NRAs' requests during the next 6 months of the EPR.
Read the NRAs' statement on the NordREG website: NRA communication regarding the TSOs’ June 2023 EPR report
More news available in the CCM News update under Updates and newsletter
The next 6 months of EPR starts now
As we are now entering into the next 6 months of EPR, the Nordic CCM urges all electricity market stakeholders to follow the EPR closely to prepare for the upcoming transition towards flow-based capacity calculation.
Read on the NordREG website: NRA communication regarding the TSOs’ June 2023 EPR report
13 Jun 2023: 3-month EPR Evaluation report submitted
Today, the Nordic TSOs submitted the 3-month CCM EPR evaluation report to the Nordic NRAs. Click here to download the report!
Evaluation report includes summary of stakeholder feedback
The TSOs organized a one-month public consultation to include stakeholder input in the evaluation report. All 19 responses from stakeholders, including the TSO reflection corresponding to the stakeholder responses, have been included in the report.
The Nordic TSOs acknowledge the concerns expressed by the stakeholders, but also recognize that most of them are not linked to the scope of the report – despite the quality concerns that have been expressed. As such, no content-related changes have been made to the report, based on the feedback from the stakeholders submitted in the public consultation.
The Nordic TSOs conclude that the Nordic FB implementation has been demonstrated to meet the NRA KPIs and to function as expected. However, the Nordic TSOs are working on a continuous quality improvement.
Updates on congestion income
The submitted evaluation report includes updates related to congestion income distribution (CID) and to the corresponding total SEW. In total, corrections of the CID reduce the total SEW change by 8 MEUR (the SEW difference between FB and NTC) for the 3-month evaluation period.
The distribution of the CI has also been updated so it is now properly aligned with the methodology for congestion income distribution approved by ACER.
The largest changes occur in NO3, NO5, SE1 and SE3, with the biggest impact on NO3. The total sum of the congestion income remains the same.
The analytical tool has been updated, and the congestion income distribution has been recomputed for all the weeks. All relevant graphs and numbers in the evaluation report have been updated accordingly. The new values correspond to how the congestion income would be distributed between the Nordic TSOs after go-live.
17 Apr 2023: Public online consultation on the EPR evaluation report + hybrid stakeholder meeting 3 May
The Nordic TSO:s welcome all stakeholders to provide input to the EPR evaluation report through a public online consultation. Please note that all input to the consultation must go via the dedicated consultation page. All responses must be submitted no later than 17 May 00:00 CET, 2023.
Consultation period: 17 April –17 May, 00:00 CET, 2023
During the consultation period there will also be a hybrid stakeholder meeting: 3 May 9.30-15.30 CET.
Meeting material is available under Documents & Presentations
14 Apr 2023: New format to the CCM EPR market report + New version of Phenomenon report
From week 11 forwards, the weekly Market report will be condensed into two pages. The report still contains the same kind of information as before, but the format provides a better overview of the graphs and the relevant results. Please note that the Market report Annex remains unchanged.
For the Nordic CCM market reports please visit Simulation results
Also, a new version of the Phenomena report was published (revision 11 April 2023). The Phenomenon report is available under Simulation results.
31 Mar 2023: First version of CCM EPR Handbook published
The handbook is to provide additional support to all stakeholders in utilising the data from the external parallel run (EPR) and to prepare for go-live of flow-based in the Nordics. Please note that this handbook will be updated and extended during the EPR.
Read the Handbook!
20 Jan 2023: 3-month NRA reporting period to start on 12 December 2022
The quality of the External Parallel Run (EPR)-process is now sufficient for the NRA reporting period to start on 12 December 2022 (i.e. week 50). A three-month period to comply with the NRA KPIs is required until the project can continue into the final period of the EPR. The previously communicated go-live window - Q1 2024 at the earliest - remains unchanged.
The project parties would like to thank you for your continuous support and highly-appreciated patience with the project, which takes us into a promising 2023. We regret being unable to deliver the EPR results in accordance with the NRA KPIs earlier. The project parties are committed to continuing to improve the delivery of these results according to the regulatory KPI requirements.
Due to technical issues, the Simulation Facility could not be used for market simulations by NEMOs and TSOs from the second half of 2022. Instead, NEMOs are now delivering market results using an alternative setup for the EPR, mitigating the challenges caused by the unavailability of the Simulation Facility.
18 Nov 2022: Go-live of Nordic flow-based CCM delayed to Q1 2024
The project parties involved in the implementation of the flow-based (FB) capacity calculation methodology (CCM) in the Nordics confirm a delay of the project. Go-live will be, at the earliest, in Q1 2024. Simulation results from the external parallel run are expected in January 2023, at the earliest.
The Nordic TSOs and NEMOs have encountered challenges in conducting the external parallel run (EPR) according to schedule. This is due to the prolonged unavailability of the market Simulation Facility used to calculate results and also to stability issues in the coordinated capacity calculation. The former has caused an extended interruption of FB market simulations, while the latter has triggered non-compliance with National Regulatory Authorities’ key performance indicators .
Consequently, TSOs and NEMOs have reassessed the timeline and concluded that the earliest possible go-live will be Q1 2024.
Alternative solution will provide market results in early 2023
Due to technical issues, the Simulation Facility could not be used by NEMOs and TSOs in the second half of 2022. NEMOs are now offering an alternative solution for the EPR, which will mitigate the challenges caused by the unavailability of the Simulation Facility.
As soon as the Simulation Facility is back in operation, calculation support for the EPR will be retransferred back to this primary tool.
Preliminary indications places a possible start of the alternative calculation support at November or early December 2022. Stakeholders can expect the first available FB market results based on the alternative solutions in January 2023, at the earliest.
7 Nov 2022: Consultation closed
The on-line consultation on the on the CCR Nordic TSOs’ proposal on the Balancing Timeframe Capacity Calculation Methodology is closed. No further comments can be made.
7 Oct 2022: Open on-line consultation on the CCR Nordic TSOs’ proposal on the Balancing Timeframe Capacity Calculation Methodology + webinar 27 October
Stakeholders and market participants are invited to provide input on the NordicTSO proposal for the Balancing Timeframe Capacity Calculation Methodology. The proposal covers the Capacity Calculation Methodology for the Balancing Timeframe for the Nordic Capacity Calculation Region. The proposal is subject to consultation in accordance with Article 10 of the Commission Regulation (EU) 2017/2195 of 23 November 2017 establishing a guideline on electricity balancing.
Consultation period: 7 Oct - 7 Nov 2022
More information on the consultation as well as related documents are available on the event page on the ENTSO-E web
The webinar will focus on the BT CCM and the consultation on the TSOs proposal. The webinar is open to all stakeholders, no registration nescessary. It will be held in English.
Time: 27 October 2022 at 14:00-15:00 CET
31 Aug 2022: The starting date for the 3-month evaluation period will be reset
The Simulation Facility (SF) upgrade that started in early June 2022 is still in progress. Due to the unavailability of the SF, it has not been possible to perform any market simulations for the Nordic EPR during the 3-months evaluation period that started on the 5th of June 2022. Therefore, the Nordic CCM project has decided to reset the starting date of the 3-months evaluation period. We will inform you about the new starting date as soon as the SF is back in operation to continue the market simulations for the Nordic EPR.
18 Aug 2022: New simulation results file for week 15 published
Due to erroneous and missing net position data in the simulation results for week 15 a new results file was created and uploaded.
12 Aug 2022: Resimulation need for weeks 16-18
Due to missing input data in the simulations for week 16, 17 and 18, they need to be re-simulated. Results will be published on the website when simulation facility is back in operation and data has been simulated again.
5 Jul 2022: Information on publication of parallel run data during summer 2022
The EPR Market reports for week 14 and 15 market will be published in mid-July. No additional market reports will be published during the summer period. Simulation Facility (SF) is undergoing extended maintenance after an upgrade to version 4.0, causing delays in running simulations. After the upgrade, it will be essential to test and validate the SF in order to operate it for the the Nordic EPR. SF is as of now still not available for Nordic EPR operations. The relevant Nordic RCC/TSO personnel required to test and validate the upgraded version are now on summer vacation.
31 May 2022: Data on physical flows and scheduled exchanges removed from the SF output data files for weeks 10-15
The physical flow data and scheduled exchanges data has been removed from the SF output data result files for weeks 10 to 15 due to an error. We are investigating the root cause and will provide you with an update as soon as we have resolved the issue. We apologise for the inconvenience.
7 Mar 2022: Start of external parallel run for the delivery day of 8 March 2022
The Nordic TSOs and the Nordic RSC jointly decided to start the external parallel run (EPR) of the Nordic flow-based methodology.