Title Owner Updated

System Frequency

This page holds the historic system frequency data for Great Britain at a 1 second resolution. It is the role of the National Grid ESO to keep the system frequency at 50 Hz, with a statutory limit of 0.5 Hz...

40 ESO

Tags: Frequency Historic Subscribable System

CSV Open

National Grid ESO 2022-05-11

Firm Frequency Response (FFR) Market Information

Firm Frequency Response (FFR) market information reports on the FFR requirement for two months ahead of the publishing month, as well as information on the contracts due to provide in the month following the...

78 ESO

Tags: Balancing Contract Ffr Firm Frequency Market Response Service Subscribable Tender

CSV PDF XLSX Open

National Grid ESO 2022-04-29

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 tenders. Reason...

53 ESO

Tags: Balancing Contract Ffr Firm Frequency Response Service Subscribable Tender

CSV Unknown XLSM XLSX Open

National Grid ESO 2022-04-27

Live System Information

This page contains live system data for transmission demand, frequency and transfers. This dataset does not currently include any files to download, all information is presented on this page. Use the links...

1 ESO

Tags: Demand Frequency Live System Transfers

Unknown Open

National Grid ESO 2021-07-20

System Excursions

The National Grid Electricity System Operator (ESO) publishes an annual report on the performance of the National Electricity Transmission System (NETS) in Great Britain and fulfils Transmission Licence...

2 ESO

Tags: Excursions Frequency Subscribable System Voltage

CSV Open

National Grid ESO 2021-07-20