IT notices: Planned National Grid ESO Outage

National Grid ESO (NGESO) will be carrying out a planned IT maintenance between  02:10 to 03:10 (BST) on Sunday 24 May.

What is happening?

The outage will affect several NGESO systems which send data to the Balancing Mechanism Reporting Service (BMRS), including

  • Demand Forecasts
  • non-BM STOR
  • Balancing Services Adjustment Data (BSAD)
  • European Transparency Regulation (ETR) data and REMIT

TOGA and ASDP (PAS) users will not be able to access these systems during this maintenance window. There will be no impact to Loss of Load Probability (LoLP) calculations during this time.

How will I be impacted?

During the planned downtime, the BMRS will continue to publish the data as received and this outage will impact some data (e.g. BSAD) used for the calculation of indicative System Prices. Therefore during the outage window, the indicative System Prices published on BMRS may not be accurate.

This activity will impact the ETR and REMIT data which NGESO sends to the BMRS. All the impacted data will not be published on the BMRS website, APIs, Data Push Service and TIBCO. The ETR data will not be sent to ENTSO-e’s Transparency platform.

Market Participants who submits REMIT data via the Elexon Portal will not be affected by this activity. 

Do I need to take any further action?



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