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 above or below this value.
Time values are all given in Greenwich Mean Time (GMT) starting January 2020.
NOTE: Due to the size and format of these files, to view the data, please download the CSV file and open it with Notepad++ for complete document loading.
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130 Data Files
| Name | Format | Last Changed Sort ascending | Download | Explore |
|---|---|---|---|---|
| April 2017 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| May 2017 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| June 2017 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| July 2017 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| August 2017 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| September 2017 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| October 2017 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| November 2017 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| December 2017 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| December 2018 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
Additional Information
| Field | Value |
|---|---|
| Creator | National Grid Electricity System Operator |
| Date Created | November 5, 2019 at 11:50 AM (UTC+00:00) |
| Source | National Grid Electricity System Operator |
| Rights | NESO Open Data Licence |
| Update Frequency | Monthly |
cURL integration
# Get a list of dataset's resources
curl -L -s https://api.neso.energy/api/3/action/datapackage_show?id=system-frequency-data | grep path
# Get resources
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/5270855a-ae0d-4f66-828d-dddfed53f54f/download/f-2017-4.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/fa42b000-5d10-4a84-bbc4-6bf2a73b8696/download/f-2017-5.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/1489d348-abda-47d3-a31d-a3bd09332840/download/f-2017-6.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/39ad9573-bbe1-406c-8ffc-10d7df65d9e6/download/f-2017-7.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/5f60b563-ad37-4aca-9aa1-557bdd283987/download/f-2017-8.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/b0d623f6-381e-4c79-a1dd-a013f8eaaf98/download/f-2017-9.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/b8ce3808-8f72-46f0-98d8-2ed8befa91f5/download/f-2017-10.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/56fcb63c-4cb4-4de1-8a1d-d8fde291dfaa/download/f-2017-11.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/e9987ee0-38d2-4b22-9a2f-ec935d5574a7/download/f-2017-12.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/67f7a127-e352-4c09-b403-d44f2740e510/download/f-2018-12.csv