System Frequency
Overview
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.
Please note that due to the size and format of these files they are not currently available via the API. To view the data please download the zip file, unzip it and open it with Notepad++ for complete document loading.
Additional Information
| Key | Value |
|---|---|
| Update Frequency | Monthly |
Files
December 2019 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format, given in Coordinated Universal Time (UTC). f - The system frequency as measured at that second in time.
November 2019 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format, given in Coordinated Universal Time (UTC). f - The system frequency as measured at that second in time.
October 2019 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format, given in Coordinated Universal Time (UTC). f - The system frequency as measured at that second in time.
September 2019 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format, given in Coordinated Universal Time (UTC). f - The system frequency as measured at that second in time.
August 2019 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format, given in Coordinated Universal Time (UTC). f - The system frequency as measured at that second in time.
July 2019 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format, given in Coordinated Universal Time (UTC). f - The system frequency as measured at that second in time.
June 2019 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format, given in Coordinated Universal Time (UTC). f - The system frequency as measured at that second in time.
May 2019 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format, given in Coordinated Universal Time (UTC). f - The system frequency as measured at that second in time.
April 2019 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format, given in Coordinated Universal Time (UTC). f - The system frequency as measured at that second in time.
March 2019 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format, given in Coordinated Universal Time (UTC). f - The system frequency as measured at that second in time.
February 2019 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format, given in Coordinated Universal Time (UTC). f - The system frequency as measured at that second in time.
January 2019 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format, given in Coordinated Universal Time (UTC). f - The system frequency as measured at that second in time.
January 2020 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
February 2020 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
March 2020 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
April 2020 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
May 2020 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
June 2020 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
July 2020 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
August 2020 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
September 2020 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
October 2020 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
November 2020 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
December 2020 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
January 2021 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
February 2021 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
March 2021 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
April 2021 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
May 2021 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
June 2021 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
July 2021 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
August 2021 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
September 2021 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
October 2021 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
November 2021 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
December 2021 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
January 2022 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time
February 2022 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time
March 2022 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
April 2022 - Historic Frequency Data
Historic frequency data for Great Britain at a 1-second resolution. dtm - The date in a YYYY-MM-DD format, followed by the time in a HH:MM:SS format. f - The system frequency as measured at that second in time.
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