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Datasets (27)
  • CSV
Ancillary services
Ancillary Services Important Industry Notifications
The dataset contains the latest update on important ancillary services procurement changes. Please subscribe to get the latest update.
  • XLSX
  • CSV
  • XLSM
Ancillary services
Firm Frequency Response (FFR) Post Tender Reports
The Firm Frequency Response (FFR) post tender reports are published following each monthly tender. They indicate which tenders were accepted and rejected and the information submitted for these…
  • CSV
Ancillary services
EAC-BR Mock Auction Results
A set of auction results views which present the outcome of daily Enduring Auction Capability (EAC) - Balancing Reserve (BR) mock auction runs. The EAC-BR Mock Auction Results are updated daily in…,…
  • CSV
Ancillary services
EAC mock auction results
Mock auction results will be available only for a temporary period. These are a set of auction results views which present the outcome of the weekly mock EAC auction runs. Results are updated once…
  • CSV
Ancillary services
Dynamic Containment, Regulation and Moderation auction results
Please visit EAC auction results for the latest auction results. This dataset will no longer be updated.
  • CSV
Ancillary services
Contract Transfer of Obligation
The “Contract Transfer of Obligation” will be updated when ESO receives a Market Provider request to transfer a Balancing Service contract from a contracted unit to a non-contracted unit. This file…
  • ZIP
  • CSV
Ancillary services
Phase 2: FFR Auction Results Summary
As part of our work on developing our balancing services we ran a weekly trial auction for Firm Frequency Response. The weekly auction trial results and order hash data are available here., Note:,…