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Methodologies for Coordinating Operational Security Analysis and Relevance Asset Outage Coordination

On 21 December 2018, the proposals of the Electricity Transmission System Operators (TSOs) for developing methodologies for Coordinating Operational Security Analysis (CSAM) and Relevant Asset Outage Coordination (RAOCM) as mandated by the Commission Regulation (EU) 2017/1485 of 2 August 2017 establishing a guideline on electricity transmission system operation (SO Regulation), were referred to the Agency by all National Regulatory Authorities (NRAs).

The Agency will have to present decisions on both topics by 21 June 2019 (i.e. 6 months from the date of the referral to the Agency).

1.       Consultations with TSOs and NRAs:
During late March, April and May, the Agency will engage with TSOs and NRAs to discuss the any issues and to inform its decisions.

2.       Public consultation:
In addition, in order to obtain a wider view from stakeholders, the Agency conducted a formal public consultation from 25 January to 18 February 2019. Stakeholders contributions are published here​.

3.       Background:
The SO Regulation mandates all TSOs to jointly develop a proposal for the CSAM. The CSAM shall aim at the standardisation of operational security analysis, at least per synchronous area. Similarly, it establishes that all TSOs shall jointly develop a proposal for the RAOCM, at least per synchronous area.

Both CSAM and RAOCM shall be submitted for approval to the NRAs at the latest 12 months after the entry into force of the SO Regulation. The last TSO submission of both methodologies took place on 1 October 2018. Subsequently, all NRAs referred the methodologies to the Agency on 21 December 2018, requesting the Agency to adopt a decision on the CSAM and RAOCM.

In their letter, all NRAs emphasise three topics which have been extensively discussed with TSOs during the development of the CSAM and which are not detailed to a satisfactory level in the CSAM proposal:

1.       Principles for common probabilistic risk assessment;
2.       Handling of uncertainties;
3.       Coordination of Regional Security Centres.
Also, the proposals on CSAM and RAOCM have been treated as a package because they share the methodology on influence computation. The SO Regulation also establishes that the methodology on influence computation shall be consistent between CSAM and RAOCM.

All NRAs referred the two methodologies to the Agency as TSOs did not fully incorporate the feedback and comments by all NRAs provided during the extensive coordination before the TSOs' formal submission, and the apparent risk of TSOs not implementing the requested amendments (if the path of a request for amendment was pursued) and in order to facilitate a swift implementation of the SO Regulation.​