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 |
|---|---|---|---|---|
| March 2023 – Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| December 2014 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| October 2014 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| August 2014 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| July 2014 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| April 2014 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| January 2014 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| February 2014 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| March 2014 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| May 2014 - 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/69e906af-04f6-49b9-95e9-b02a64a46582/download/fnew-2023-3.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/c46f588c-0067-46fb-9b82-1e0cb71c920e/download/f-2014-12.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/32f82531-81ad-43b9-99a4-ca42b3d7aa59/download/f-2014-10.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/ead6ec3e-a7e3-4a51-bcc9-4387175c298b/download/f-2014-8.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/e9ae9d2d-0019-42c0-aa16-defca2433208/download/f-2014-7.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/8841fc25-5472-4d9b-b0f7-eba44e083042/download/f-2014-4.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/0cd6ff2e-62ca-4fbf-8417-18b3539530e6/download/f-2014-1.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/69553694-f590-4a5a-8da0-9e4532298603/download/f-2014-2.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/189fc0cb-7af9-4c7c-b674-0544ecb4b308/download/f-2014-3.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/16371770-2102-405f-a3f8-6098d0d66ce0/download/f-2014-5.csv