System Operations Committee
ENTSO-E’s operations activities are overseen by the ENTSO-E System Operations Committee (SOC) chaired by Tahir Kapetanovic from Austrian Power Grid (APG), Austria and by Olivier Arrive from RTE, France as Vice-Chairman. The Committee reports to the ENTSO-E Board and Assembly.
All activities of the ENTSO-E SOC are supported by the ENTSO-E Operations Secretariat team.
What we do
System Operations is the core activity of any transmission system operator (TSO). It covers the actions taken to ensure the secure and optimal real-time operation of the grid, enduring resilience of the transmission system.
The ENTSO-E System Operations activities are about:
- Developing and maintaining European operational framework, notably through operations network codes/guidelines, agreements, standards and methodologies;
- Coordinating measures for protection of critical infrastructure;
- Developing and maintaining dedicated communication infrastructure for real-time and non-real-time data exchange and a number of systems such as the ENTSO-E Awareness System which provides a real-time pan-European view on the state of transmission systems;
- Establishing European rules for facilitating the development and implementation of a common grid model for all stages of system operation via an Operational Planning Data Environment;
- Classification and follow up of operational incidents;
- Regional security coordination and its evolution to the Regional Coordination Centres (RCCs) and services to be provided based on the Clean Energy Package legal mandates and those required extra by TSOs;
- Proactively assessing innovations and power system future needs and proposing the best operational strategies for the power system to meet and best facilitate the energy transition.
How we are organized
Groups within SOC. Currently, there are five steering groups and two projects reporting directly into SOC. Each group is supported by our Secretariat team. You can learn more about each group below.
65th System Operations Committee
Date: 21 April 2021
64th System Operations Committee
Date: 17 February 2021
63rd System Operations Committee
Date: 2 December 2020
62nd System Operations Committee
Date: 30 September 2020
61st System Operations Committee
Date: 10 June 2020
60th System Operations Committee
Date: 09 April 2020
59th System Operations Committee
Date: 12 February 2020
Written Voting Decisions
- 9 July 2021 Written Voting Procedure on the PCN MLA Governance and Budget models
- 7 July 2021 Written Voting Procedure on the Scenario definition and scenario description for the year 2022 CGM creation SOGL Article 65
- 5 July 2021 All TSOs Written Voting Procedure on the Week-ahead Common Grid Model Methodology
- 29 June 2021 Written Voting Procedure on the Response on ACER public consultation on Framework Guidelines on NC on Cybersecurity
- 21 June 2021 Written Voting Procedure on the RSC Services MLA amendment for session lockout time prolongation in the Let’s coordinate Tool for OPC and STA Pan European Services
- 18 June 2021 Written Voting Procedure on Revised ACER decision on System Operation Regions - next steps
- 04 June 2021 Written Voting Procedure on the Approval on the ENTSO-E recommendations relating to the coordination of technical cooperation between community's and third-country's
- 30 April 2021 Written Voting Procedure on the Generic Security Plan (light version)
- 25 January 2021 Written Voting Procedure on the Approval of Terms of Reference for the Task Force CE System Separation
- 22 December 2020 Written Voting Procedure on the Approval of the position paper on Grid Forming Capabilities towards system level integration
- 17 December 2020 Written Voting Procedure on the Approval of the OPC and STA pan-European tool - Release 2c legal Business Requirements
- 14 December 2020 Written Voting Procedure on the Approval of RSC Services MLA amendment for Hosting service
- 09 December 2020 ALL TSOs Written Voting Procedure on timeline for the D-2 CGM creation
- 01 December 2020 Written Voting Procedure on RSC Services MLA amendments on cost structure and budget and inclusion of 2 FTEs
- 16 November 2020 Written voting procedure on next steps regarding the project of CBA for FCR provision with LER in accordance with Art.156(11)
- 26 October SOC & MC Written Voting Procedure on the Deterministic Frequency Deviation Report
- 23 September Load Frequency Control 2019 Annual Report
- 23 September Incident Classification Scale 2019 Annual Report
- 4th September 2020 PID on drafting the Network Code on Cybersecurity
- 3rd September 2020 Identification of Regional Electricity Crisis Scenarios Report
- 13 August 2020 All TSO written voting procedure: Amendments to the Methodology for Coordinated Security Analysis (SO GL Art. 75) for public consultation
- 11 June 2020 All Nordic TSOs Decisions – Written Voting Procedure on the approval of the results of the CBA and the suggested time for FCR provision with LER in accordance with Art.156(11) of the Commission Regulation (EU) 2017/1485 of 2 August 2017
- 22 July 2020 System Operations Committee Written Voting Process from 22 July 2020
- 09 July 2020 ALL TSO written voting procedure: Scenario definition and scenario description for the year 2021 CGM creation SOGL Article 65
Pan-European Technical Studies
- Use of Travelling Waves Principle in Protection Systems and Related Automations
- HVDC Links in System Operations - Technical paper
- Operational Limits and Conditions for Mutual Frequency support over HVDC
- Bus Bar Differential Protection Report
- Short Circuit Contribution of Power Electronics Connecting Generators and Protection report
- Best protection practices for HV EHV AC transmission system
- Operational Limits and Conditions for Frequency Coupling
- System protection behavior and settings during system disturbances
Continental Europe Technical Studies
- Inertia and Rate of Change of Frequency – 2020 report
- Oscillation Event on 3 December 2017
- Analysis of ce inter-area oscillations 1st December 2016
- SPD DSA Task Force - Dynamic Security Assessment (DSA)
- Determining generator fault clearing time for the synchronous zone of Continental Europe
- Overfrequency Control Schemes – Recommendations for the Synchronous Area of Continental Europe
- System Dynamic Issues for the synchronous zone of Continental Europe
- Frequency Stability Evaluation Criteria for the Synchronous Zone of Continental Europe – Inertia Report
- Final report on the Blackout in Turkey 31st March 2015 (V1.0)
- 2015 Wide Area Monitoring Report (V5)
- 2015 Dynamic Line Rating for Overhead Lines
Further Reports and Studies
- Quality of Datasets and Calculations (March 2015)
- Dispersed Generation Impact on Continental Europe Region Security (November 2014)
- Controller Test Report (November 2013)
- Automatic Frequency Disconnection Settings of Installed Photovoltaic (PV) Panels in Some European Countries (May 2012)
- Special Protection Schemes (April 2012)
- Best Protection Practices for HV and EHV Transmission Systems of ENTSO-E CE Area Electrical Grids (April 2012)
- Analysis of CE Inter-Area Oscillations of 19 and 24 February 2011 (September 2011)
- Technical Background and Recommendations for Defence Plans in the Continental Europe Synchronous area (October 2010)
ENTSO-E Dynamic Model of Continental Europe
The model describes the general dynamic behaviour of the ENTSO-E Continental Europe power system and is suitable for transient analysis. The model is able to represent the main frequency response of the system as well as the main inter-area oscillation modes.
In order to simplify the model and be able to make the network data available to third parties, a few simplifications and anonymisation steps were performed. However, all these adjustments were done in such a way that the dynamic behaviour of the power system is not affected. More details can be found in the Initial Dynamic Model Instruction manual.
The model is currently available in PowerFactory, Netomac, Eurostag, and PSS/E proprietary formats.
At PowerTech Eindhoven 2015 conference (Towards Future Power Systems and Emerging Technologies), the paper [Paper] Dynamic Study Model for the Interconnected Power System of Continental Europe in Different Simulation Tools was presented.
The use of this model is recommended exclusively under the supervision of ENTSO-E dynamic experts. A party wishing to access the Initial Dynamic Models provided by ENTSO-E will be required to sign a Request Form that includes non-disclosure provisions. If you are a University use The Request Form for Universities.
Please note that the model cannot be delivered to private persons. A legal entity has to sign the Request Form and take over the responsibilities stemming from it.
Please send the completed and signed Request Form to: email@example.com.
The validity of the Request Form will be checked. Please expect that ENTSO-E dynamic experts will contact you to discuss the usability of the model for your project. It is expected that the model will be used for research. It will be delivered by email containing a link for downloading the requested proprietary format of the model.
Continental Europe Synchronous Area Framework Agreement
Since its entry into force the 14 April 2019, The Synchronous Area Framework (SAFA) for the ENTSO-E Regional Group Continental Europe replaces and supersedes the 2005 Multilateral Agreement Operation Handbook. It develops the Synchronous Area Operation Agreement according to Article 118 of the System Operations Guidelines, one of the eight European network codes and guidelines, and the SAFA includes also necessary agreements among the TSOs of Continental Europe not bound by EU law.
|P1||Load-Frequency Control and Reserves|
|P3||Accounting and Settlement|
|P4||Coordinated Operational Planning|
|P5||Emergency and Restoration|
|A1||List of Definitions|
|A2||List of Parties|
Baltic synchronisation with CE
On 27 May 2019, TSOs of Regional Group Continental Europe (RG CE) and the Baltic TSOs signed the “Agreement on the Conditions of the Future Synchronous Interconnection of Power System of Baltic States and Power System of Continental Europe”. The Agreement specifies the technical requirements to comply with to enable secure interconnection of the Baltic States with the CE synchronous area.
The requirements are related to system operation of Baltic TSOs, which must be in line with the so called Operational Framework. The synchronization is planned for 2025.
Ukraine Moldova synchronisation studies
On 28 June 2017, TSOs of Regional Group Continental Europe (RG CE) and Ukrenergo and Moldelectrica signed the “Agreements on the Conditions of the Future Synchronous Interconnection of the Power System of Ukraine/Moldova with the Power System of Continental Europe”. The Agreements specify the technical requirements to comply with to enable secure interconnection of Ukraine and Moldova with the CE synchronous area. The requirements are related to system operation of Ukrenergo and Moldelectrica, which must be in line with the so called Operational Framework. The Agreements also foresee to perform additional synchronization studies to prove the steady-state and dynamic stability of the interconnection with the existing grid elements. Depending on the outcome of the studies, installation of additional grid elements may be required, including the option of hybrid AC/DC or pure DC interconnection. The synchronization roadmap or any other plan depends on the clarification of these questions. At the end of 2021, based on the results of ongoing studies (both static and dynamic), decisions are expected to be made regarding the measures to be implemented to ensure the dynamic stability of the interconnections with Ukraine and Moldova, and whether it will be a pure synchronous, a pure DC or a hybrid AC/DC connection.
ENTSO-E Grid Disturbance Definitions for the Power System above 100 kV
ENTSO-E Grid Disturbance Definitions for the Power System above 100 kV describes a common set of principles for identifying and defining incidents, disturbances and faults in the power grid. It is based on existing standards (i.e. IEEE and IEC) and existing EU TSOs’ processes.
This document is an update to 2018 version, which was used as a guideline for collecting information for the annually published Nordic and Baltic Grid Disturbance Statistics report. The updated 2021 version is intended to form the basis of common grid disturbance statistics for all European countries, as it establishes common practices for registering and reporting this information. The aim is to reduce potential double registering of data, increase and level the quality of the data and make it easier to exchange and derive data for new use in the future.
Nordic Technical Studies
Guidelines for the classification of grid disturbances above 100 kV have been replaced with ENTSO-E Disturbance Definitions for the Power system above 100 kV
Mid-term adequacy forecast
Frequency stability in the Nordic system
The Nordic Transmission System Operators (Energinet, Fingrid, Statnett and Svenska kraftnät) have through the Nordic Analysis Group (NAG) carried out several parallel projects within the domain of automatic frequency control with frequency quality and stability as the main objective.
The project portfolio has consisted of evaluating the performance of and requirements on
- Frequency containment process (FCP)
- System inertia
- Frequency quality
- Under frequency load shedding (UFLS)
The goals, results and next steps for each of the individual projects are presented in a high level executive summary.
The individual project reports can be downloaded here:
- Reports on Frequency containment process
- Reports on System inertia
- Reports on Frequency quality
- Report on Under Frequency Load Shedding
Reports on future system inertia
- Nordic and Baltic Grid Disturbance Statistics 2019
- Nordic and Baltic HVDC Utilisation and Unavailability Statistics 2019
- Nordic and Baltic Grid Disturbance Statistics 2018
- Nordic and Baltic HVAC Disturbance Statistics 2018
- Nordic HVDC Utilisation and Unavailability Statistics 2018
- Nordic and Baltic HVAC Disturbance Statistics 2017
- Nordic and Baltic HVDC Disturbance Statistics 2017
- Nordic and Baltic HVAC Disturbance Statistics 2016
- Nordic and Baltic HVDC Utilization and Unavailability Statistics 2016
- Nordic and Baltic HVAC Disturbance Statistics 2015
- Nordic and Baltic HVDC Utilization and Unavailability Statistics 2015
- Nordic and Baltic HVAC Disturbance Statistics 2014
- Nordic and Baltic HVDC Utilization and Unavailability Statistics 2014
- Nordic HVAC Grid Disturbance Statistics 2013
- Nordic HVDC Utilization and Unavailability Statistics 2013
- Nordic Disturbance Statistics 2012
- Nordic Disturbance Statistics 2011
- Nordic Disturbance Statistics 2010
- Nordic Disturbance Statistics 2009
- Nordic Disturbance Statistics from 1999 to 2008 (Nordel)
- Nordic System Operation Workshop 1.12.2016
- Nordic System Operations Workshop 10.12.2014
- Nordic Automatic FRR Workshop 9.5.2012
- Nordic System Operations Workshop 28.9.2011
- Nordic System Operations Workshop 13.4.2010
- Nordic summary of the winter 2010-2011
- Nordic winter power balance 2010-2011
- Evaluation of the ramping restriction in the energy market (PDF, 379KB)
- ENTSO-E’s views on the offshore grid development in the North Seas (PDF, 1.42MB)
- Impact of increased amounts of renewable energy on Nordic power system operation
Nordic System Operation Agreement (Nordic SOA)
The below reports and publications concern ENTSO-E’s Nordic region.
The new Nordic system operation agreement (Nordic SOA) entered into force on 14th August 2019. The new Nordic SOA supersedes and replaces the previous SOA.
Nordic System Operation Agreement
- Main Agreement
- Annex Load-Frequency Control & Reserves
- Annex Electricity Balancing
- Annex Operational Planning
- Annex Operational Security
- Annex Emergency and Restoration
- Annex Capacity Calculation and Congestion Management
- Annex Forward Capacity Allocation
Technical cooperation with third-country TSOs
This document provides recommendations for the cooperation of ENTSO-E with third-country TSOs and is adopted in accordance with Article 8(3)(c) Regulation (EC) No 714 / 2009.
In this document, the role of ENTSO-E is to facilitate the cooperation and coordination between TSOs to ensure effective and transparent access to the transmission networks and to provide coordinated and forward-looking planning. Supporting the technical evolution of the transmission system, including the creation of interconnection capacities with third-party TSOs, is a fundamental aspect of ENTSO-E’s remit.
Sharing best practices on traditional and new issues will help all involved parties on their way towards a sustainable energy future.
In maintaining and continuously improving these recommendations, ENTSO-E will continue to review and update these recommendations, taking into account practical experience of their implementation. In addition, ENTSO-E intends in the future to consult with third-country TSOs with the intention of making changes that would be beneficial to this framework for technical cooperation.
January 2017 critical grid situation
The report looks at the consequences on systems and markets in the most impacted countries. If the report shows good cooperation notably through Regional Service Coordinators in Western Europe, the cooperation in South East Europe seems to have suffered from a lack of policy and regulatory alignment.
The report lists a series of recommendations like the enhancement of the methodology used in Outlooks to cover more adequacy risks. Today the methodology is not able to forecast situations like the South East Europe January 2017 cold spell. ENTSO-E is committed to make these improvements in time for the next winter outlook.
On net generating capacity, the decrease of fossil fuel (except gas) and the increase in wind and solar is confirmed compared to last summer.
January 2019 CE Significant Frequency Deviations
Deterministic Frequency Deviations Report
Long Lasting Frequency Deviations
The Long Lasting Frequency Deviations Measures taken by Continental European TSOs to address Long Lasting Frequency Deviations
January 2021 CE system separation
ENTSO-E publishes the Interim Report on the Continental Europe Synchronous Area Separation that took place on 8 January 2021.
This Interim Report follows the initial information published on 8 January 2021 and two updates of 15 and 26 January 2021. The Report recounts the evolution of system conditions during the event, the steps taken during the resynchronisation and shows the communication between the coordination centres/synchronous area monitors and the TSOs. It also includes the assessment of the incident based on the Incident Classification Scale (ICS) Methodology (developed in accordance with Regulation (EU) 2019/943), according to which the incident is classified as a scale 2.
This Interim Report is the result of an intensive process to collect and prepare data on the event, started immediately after its resolution. It is to serve as basis for further investigation by an Expert Panel which according to the ICS Methodology for scale 2 incidents, shall prepare a Final Report.
ACER and ENTSO-E investigate the 8 January electricity system separation
- ACER and national regulators join ENTSO-E’s Expert Panel investigating the electricity system separation of the Continental Europe synchronous area on 8 January 2021
- The Expert Panel will identify the causes and make recommendations in a Final Report Europe’s electricity system split in two separate regions on 8th January 2021 resulting in transmission system outages.
Expert Panel begins its investigation
Based on preliminary data of Transmission System Operators (TSOs), the system separation of the Continental Europe synchronous area, which lasted just over an hour, is classified as a scale 2 (or “extensive”) incident as per ENTSO-E’s Incident Classification Scale (ICS)1.
According to the ICS Methodology, for scale 2 incidents, a final report shall be prepared by an Expert Panel, where relevant National Regulatory Authorities (NRAs) and the European Agency for the Cooperation of Energy Regulators (ACER) may be involved upon their request. ENTSO-E has created the Expert Panel, inviting ACER and NRAs to join it. The Expert Panel will first meet on 4 March.
ENTSO-E’s Interim Report published
An intensive process started immediately after the event has been resolved, in order to collect and prepare factual data. The Interim Report published today by ENTSO-E contains the data gathered, initial findings on the sequences of events and timeframes. The Interim Report is the basis for the formal investigation by an Expert Panel.
Expert Panel’s Final Report has 22 recommendations
The Final Report describes the sequence of events and violations of operational security limits. It explains the causes and has recommendations to prevent such incidents in the future. ACER and ENTSO-E are committed to fulfilling their legal obligations specified in the System Operations Guideline and ICS Methodology.
- Incidents Classification Scale. The ICS Methodology has been developed in accordance with Regulation (EU) 2019/943 of the European Parliament and of the Council of 5 June 2019. It has been updated 2019, to fulfil the objectives of Article 15 of SO GL quoted above.
- Commission Regulation (EU) 2017/1485 of 2 August 2017 establishing a guideline on electricity transmission system operation (System Operation Guideline, SO GL)
- ENTSO-E publications:
- 8 January 2021: System split registered in the synchronous area of Continental Europe – Incident now resolved
- 15 January 2021: System Separation in the Continental Europe Synchronous Area on 8 January 2021 – update
- 26 January 2021: System separation in the Continental Europe Synchronous Area on 8 January 2021 – 2nd update
- ACER news:
- ACER, firstname.lastname@example.org, T: + 32 (0) 484 66 85 99
- ENTSO-E, email@example.com, T: +32 (0) 476 97 50 93.
If the report you are looking for is not contained in the page above, you should try the system operations reports archive.