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 2022 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| March 2022 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| February 2022 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| January 2022 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| December 2021 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| November 2021 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| October 2021 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| September 2021 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| August 2021 - Historic Frequency Data | CSV | 1 year ago | Download (CSV) | view |
| July 2021 - 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/b3bbd2e7-50b1-49cb-8326-bc8f09003cde/download/fnew-2022-4.csv
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/182081de-9773-4b5b-9c87-17adbd1576e6/download/fnew-2022-3.zip
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/181e8958-bf78-4bd6-b6ca-b8376da8e1aa/download/fnew-2022-2.zip
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/43000c20-1208-4ca7-a419-712c7a1d375c/download/fnew-2022-1.zip
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/afe9895c-5937-4e78-8949-f0f026643666/download/fnew-2021-12.zip
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/9bc4746e-3152-4c6f-886e-58377ab88e0e/download/fnew-2021-11.zip
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/12291f14-95c3-4847-b2ef-3190eaa1193c/download/fnew-2021-10.zip
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/5cea7516-cbc3-416e-8dbf-162327c16b17/download/fnew-2021-9.zip
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/ae40912b-de8f-43b1-8eeb-c58e469f2365/download/fnew-2021-8.zip
curl -L https://api.neso.energy/dataset/cb1cc925-ecd8-4406-b021-3a3f368196e1/resource/94d95251-ccbb-4187-ae54-1b90ebf12b9f/download/fnew-2021-7.zip