System Frequency

Recently Updated
Open
Update frequency

Monthly

Last updated

2021-12-06

Format

CSV

Project 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.

Frequency, Historic, Subscribable, System
Key Value
Update Frequency Monthly

Access and Licensing

Access conditions

Any controls, requirements, or pre-requisites surrounding access to data

Licence conditions

ESO

Data Quality

Aggregation Method

Any controls, requirements, or pre-requisites surrounding access to data

Organisational Lineage

The licensing conditions controlling access to the data

Risks

Considerations, risks, and constraints around making assumptions based on specific datasets. e.g data health score

Confidence Level

The level of confidence associated with a specific dataset

Units

The units in which energy is described within a dataset

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National Grid ESO

The electricity distribution network operator for the Midlands, South Wales and the South West.

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Datasets

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.

.CSV

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.