# Commission Regulation (EU) 2017/1485 of 2 August 2017 establishing a guideline on electricity transmission system operation (Text with EEA relevance), Article 74: Day-ahead, intraday and close to real-time operational security analysis

Extent: E+W+S+N.I.

1. Each TSO shall perform day-ahead, intraday and close to real-time operational security analyses to detect possible constraints and prepare and activate the remedial actions with any other concerned TSOs and, if applicable, affected DSOs or SGUs.
2. Each TSO shall monitor load and generation forecasts. When those forecasts indicate a significant deviation in load or generation, the TSO shall update its operational security analysis.
3. When performing close to real-time operational security analysis in its observability area, each TSO shall use state estimation.

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Source: https://www.legislation.gov.uk/eur/2017/1485/article/74 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-1485/article-74
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.