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 |
|---|---|---|---|---|
| January 2018 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| February 2023 – Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| January 2023 – Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| December 2022 – Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| November 2022 – Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| October 2022 – Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| September 2022 – Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| August 2022 – Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| July 2022 – Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| June 2022 – 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/eee0395e-7a8d-45c3-8f23-0e6c7e252c3e/download/f-2018-1.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/7a9b6d47-b2fd-4efe-bb41-f6e227b0786a/download/fnew-2023-2.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/5da35567-ca7f-4127-861c-cc07d488fd2d/download/fnew-2023-1.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/2dbcb246-5f7a-45c8-9d04-19fd3f1b1595/download/fnew-2022-12.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/ff852ca5-1462-4ed6-ab77-886617719276/download/fnew-2022-11.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/74a4fae6-11e6-4e3b-9c48-7263f581f5c2/download/fnew-2022-10.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/a1ccd82c-e522-4b5d-a4da-57dafab9d6de/download/fnew-2022-9.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/232121b1-d3ab-4d5a-9e57-4cfc23d62eba/download/fnew-2022-8.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/3c62eb13-0531-4b20-b1a3-b9ff5095e5ef/download/fnew-2022-7.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/15c16754-6ed4-491e-949f-a42c6145ff24/download/fnew-2022-6.csv