The target is to collect, process, and document all available power-grid frequency data publicly available and make it research ready.

Publicly available data from TSOs

The links are direct downloads. Each is a zipped csv .csv.zip file. In Power-Grid-Frequency and each respective subfolder you can find a plot for each month of the processed data with some details of the data processing and the quality of the actual data.

Data structure

The data is structured in two columns: first column is a data-time format, e.g. 2017-01-01 00:00:00. The second column is the frequency deviation from the reference in mHz, e.g. 44.006.

To read the data directly in python, use pandas as

import pandas as pd
df = pd.read_csv('path/to/germany_2017_01.csv.zip', index_col=0)

pandas is smart enough to unzip the .csv and read it.

Continental Europe

Germany

2020 Jan Feb Mar                  
2019 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2018 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2017 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2016 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2015 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2014 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2013 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2012 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2011             Jul Aug Sep Oct Nov Dec

These recordings are obtained from the TransnetBW. Processed.

Location of measurements resolution precision date range Size of database
Baden-Württemberg, Germany 1 sec (see below) 07.2011-03.2020 1.1 Gb

Precision: 3 decimal cases until 01.2017, no decimal cases from 02.2017. Likely due to a change in the recording PMU machine.

Licensing: The TransnetBW does not state an explicit licensing. Please refer to the TransnetBW Conditions of use, and take notice of the following:

Exclusion of liability: All data is determined by TransnetBW to the best of its ability and is provided without guarantee. If it is temporarily not possible, for technical or other reasons, to determine the data or make it available, TransnetBW shall endeavour to restore data availability without delay. As far as it is legally permitted, TransnetBW excludes liability for damages due to the temporary unavailability of data. TransnetBW reserves the right to update all data published here.

France

2020 Jan Feb Mar Apr May              
2019 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2018 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2017 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2016 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2015 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2014                   Oct Nov Dec

These recordings are obtained from the Réseau de Transport d’Électricité (RTE). Processed.

Location of measurements resolution precision date range Size of database
Paris, France 10 sec 1 decimal 10.2014-05.2020 100.7 MB

Licensing: The Réseau de Transport d’Électricité (RTE) states in their Legal mentions that:

[…] Consequently, no licence or any other right is granted to any party under intellectual property rights, with the exception of the right to consult information.
Any reproduction, representation, modification, publication, transmission or misrepresentation of the site or its content, either total or partial and by any procedure or on any media, is strictly forbidden.

Nordic Grid

Finland

2019 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2018 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2017 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2016 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2015 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

These recordings are obtained from FinGrid. Processed.

Location of measurements resolution precision date range Size of database
Helsinki, Finland 0.1 sec 0 decimal 01.2015-12.2019 5.1 Gb

Licensing: The FinGrid is licensed under CC-BY-4.0. Thus

Share — copy and redistribute the material in any medium or format.
Adapt — remix, transform, and build upon the material for any purpose, even commercially. Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

National Grid

Great Britain

2019 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2018 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2017 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2016 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2015 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2014 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

These recordings are obtained from NationalGrid. Processed. New data can be found at NationalGridESO

Location of measurements resolution precision date range Size of database
London, United Kingdom 1 sec 0 decimal 01.2014-12.2019 702.8 MB

Licensing: The NationalGridESO has a the following National Grid ESO Open Data Licence, which states:

You are free to:

  • copy, publish, distribute and transmit the Information;
  • adapt the Information;
  • exploit the Information commercially and non-commercially for example, by combining it with other Information, or by including it in your own product or application.

You must (where you do any of the above):

  • Acknowledge NGESO as the source of the Information by including the following attribution statement ‘Supported by National Grid ESO Open Data’;
  • Ensure our other intellectual property rights, including all logos, design rights, patents and trademarks, are protected.

Research projects open data

Power grid frequency data base

This is a set of 19 recordings in 12 synchronous regions, spanning from 1 day to ~1 month in length, over 2017 to 2019, stored in the Open Science Framework Power grid frequency data base since 2020.

GPS-Synchronised measurements

Single link with the four recordings: OSF link - 218 mb.

Location Country Synchronous Area resolution date range number of days
Karlsruhe Germany Continental Europe 1 sec 2019-07-09 - 2019-08-18 41.0
Oldenburg Germany Continental Europe 1 sec 2019-07-10 - 2019-08-07 41.0
Istanbul Turkey Continental Europe 1 sec 2019-07-09 - 2019-08-18 41.0
Lisbon Portugal Continental Europe 1 sec 2019-07-09 - 2019-08-16 41.0

Standalone measurements

Location Country Synchronous Area resolution date range number of days direct link size (mb)
Reykjavík Iceland Icelandic Grid 1 sec 2017-10-14 - 2017-10-20 5.6 OSF link 15.4
Vestmanna Faroe Islands Faroe Grid 1 sec 2019-11-03 - 2019-11-10 6.5 OSF link 24.5
Las Palmas de Gran Canaria, Canary Islands Spain Gran Canarian Grid 1 sec 2018-02-04 - 2018-02-10 6.5 OSF link 16.2
        2018-11-25 - 2018-11-26 1.5 OSF link 4.4
Palma de Mallorca, Balearic Islands Spain Mallorcan Grid 1 sec 2019-09-29 - 2019-12-31 94.0 OSF link 324
London United Kingdom National Grid 1 sec 2019-03-04 - 2019-03-07 3.5 OSF link 9.2
        2019-11-10 - 2019-12-31 51.1 OSF link 135
Lauris France Continental Europe 1 sec 2019-04-16 - 2019-04-27 12.0 OSF link 41.2
Split Croatia Continental Europe 1 sec 2019-04-09 - 2019-04-12 4.0 OSF link 13.5
Erice, Sicily Italy Continental Europe 1 sec 2019-07-02 - 2019-07-06 5.0 OSF link 17.1
Krakau Poland Continental Europe 1 sec 2019-04-04 - 2019-04-07 4.0 OSF link 13.6
Tallinn Estonia Baltic Grid 1 sec 2019-03-25 - 2019-04-17 22.9 OSF link 79.0
Stockholm Sweden Nordic Grid 1 sec 2019-05-06 - 2019-05-13 6.7 OSF link 23.1
Lisbon Portugal Continental Europe 1 sec 2018-02-14 - 2018-02-21 6.8 OSF link 16.8
Salt Lake City, Utah USA Western Interconnection 1 sec 2019-05-19 - 2019-05-25 6.4 OSF link 16.5
College Station, Texas USA Texas Interconnection 1 sec 2019-05-15 - 2019-05-16 1.4 OSF link 3.7
        2019-05-20 - 2019-05-23 3.7 OSF link 9.6
Cape Town South Africa South African Grid 1 sec 2017-11-19 - 2017-11-28 9.5 OSF link 27.0
St. Petersburg Russia Russian Grid 1 sec 2019-04-30 - 2019-05-12 13.0 OSF link 44.5

The links are direct links to the .csv files from the Open Science Framework repository Power grid frequency data base.

Licensing: The authors request the associated [preprint] be cited:

Power grid frequency data base, R. Jumar, H. Maaß, B. Schäfer, L. Rydin Gorjão, V. Hagenmeyer, arXiv:2006.01771, 2020

Aces

Denmark, Continental Europe

These recordings have been provided by Andreas Thingvad and Mattia Marinelli as part of ACES project, of power-grid frequency measurements taken in Central Jutland, Denmark, part of the Continental European Grid. The details are found here.

This is a single recording of the year of 2019 with 2 decimal cases and 0.5 sec resolution.

Location Country Synchronous Area resolution date range number of days direct link size (mb)
Central Jutland Denmark Nordic Grid 0.5 sec 2018-01-01 - 2018-12-31 365 External link 150.8

Licensing: Please cite as:

Grid Frequency Measurements of the Nordic Power System during 2018, A. Thingvad and M. Marinelli, doi:10.11583/DTU.12240260.v1, 2020

Denmark, Nordic Grid

These recordings have been provided by Andreas Thingvad and Mattia Marinelli as part of ACES project, of power-grid frequency measurements taken in Zealand, Denmark, part of the Nordic Grid. The details are found here for 2018 and here for 2019

These are two recordings: one from 2018 with 2 decimal cases and 1 second resolution. The second from 2019 with 2 decimal cases and 0.5 second resolution

Location Country Synchronous Area resolution date range number of days direct link size (mb)
Zealand Denmark Nordic Grid 1 sec 2018-01-01 - 2018-12-31 365 External link 150.8
Zealand Denmark Nordic Grid 0.5 sec 2019-01-01 - 2019-12-31 365 External link 298.1

Licensing: Please cite as:

Grid Frequency Measurements of the Nordic Power System during 2018, A. Thingvad and M. Marinelli, doi:10.11583/DTU.12240260.v1, 2020

Japan, Japanese 50Hz Grid

These recordings have been provided by Andreas Thingvad, Lisa Calearo, and Mattia Marinelli as part of ACES project, of power-grid frequency measurements taken in Tokyo, Japan, in the Japanese 50Hz grid. The details are found here.

This is a single recording of the year of 2020 with 2 decimal cases and 0.5 sec resolution.

Location Country Synchronous Area resolution date range number of days direct link size (mb)
Tokyo Japan Japanese 50Hz 0.5 sec 2020-01-01 - 2020-12-31 317 (49 missing days) External link 250.3

Licensing: Please cite as:

Grid Frequency Measurements of the Nordic Power System during 2018, A. Thingvad and M. Marinelli, doi:10.11583/DTU.12240260.v1, 2020

Independent measurements

Continental Europe

Hungary

These recordings have been provided by Prof. Dr. Hartman Bálint and have been recorded by the Hungarian TSO MAVIR.

These are two simultaneous recordings.

Location Country Synchronous Area resolution date range number of days direct link size (mb)
Békéscsaba Hungary Continental Europe 0.1 sec 2019-07-09 - 2019-07-15 7.0 OSF link 19.2
Vestmanna Hungary Continental Europe 0.1 sec 2019-07-09 - 2019-07-15 7.0 OSF link 18.8

Licensing: Open for scientific purposes.

Nordic Grid

Synchronised measurements

These recordings have been provided by provided by Luigi Vanfretti, Professor at RPI and head of ALSETLab. This is a set of 7 synchronous recordings in the Nordic Grid, from 21:00 of the 9th to 09:00 of the 11th of September 2013, taken at seven universities in the Nordic Grid, listed below.

Synchronised measurements

Location Country Synchronous Area resolution date range number of days direct link size (mb)
Trondheim, NTNU Norway Nordic Grid 0.02 sec 2013-09-09 - 2013-09-11 1.5 OSF link 28.3
Gothenburg, CTH Sweden Nordic Grid 0.02 sec 2013-09-09 - 2013-09-11 1.5 OSF link 20.6
Lund, LTH Sweden Nordic Grid 0.02 sec 2013-09-09 - 2013-09-11 1.5 OSF link 22.4
Stockholm, KTH Sweden Nordic Grid 0.02 sec 2013-09-09 - 2013-09-11 1.5 OSF link 20.5
Luleå, LTU Sweden Nordic Grid 0.02 sec 2013-09-09 - 2013-09-11 1.5 OSF link 22.0
Tampere, TTY Finland Nordic Grid 0.02 sec 2013-09-09 - 2013-09-11 1.5 OSF link 20.0
Aalto, AU Finland Nordic Grid 0.02 sec 2013-09-09 - 2013-09-11 1.5 OSF link 27.3

Universities: Norwegian University of Science and Technology (NTNU), Chalmers University of Technology Gothenburg (CTH), Faculty of Engineering, Lund University (LTH), Royal Institute of Technology Stockholm (KTH), Luleå University of Technology (LTU), Tampere University of Technology (TTY), Aalto University (AU).

Licensing: Please cite as:

M. S. Almas, M. Baudette, L. Vanfretti, S. Løvlund,and J. O. Gjerde, Synchrophasor network, laboratory and software applications developed in the STRONg2rid project, in 2014 IEEE PES General Meeting, Conference Exposition (2014) pp. 1–5.

Sweden

year location Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2020 North Sweden Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2020 Mid Sweden Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2020 South Sweden Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

These recordings from 2020 were obtained at request from the Swedist TSO. Due to data protection policies, the exact locations of the recordings were not provided. These are simply: North Sweden, Mid Sweden, South Sweden.

Given the size of the recordings, a separate OSF repository was created, denoted Nordic Grid Swedish Power-Grid Frequency Data.

Location of measurements resolution precision date range Size of database
North Sweden 0.02 sec 3 decimal 01.01.2020-31.12.2020 9.0 Gb
Mid Sweden 0.02 sec 3 decimal 01.01.2020-31.12.2020 9.2 Gb
South Sweden 0.02 sec 3 decimal 01.01.2020-31.12.2020 9.1 Gb

Licensing: The data provider requests to be referred solely as the Swedist TSO.