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DatasetsFrequency - historical data

Frequency of the Nordic synchronous system with a 10 Hz sample rate. The frequency measurement data has been divided into archives consisting of monthly frequency measurement data. Within the archives, the data is divided into daily CSV-files that can be manipulated using common data analysis software. The frequency is measured at 400 kV substations at different locations in Finland with a sample rate of 10 Hz. The data may contain some gaps due to telecommunication errors etc. The times are according to UTC+2 / UTC+3 during daylight saving time period.

Data and Resources

Frequency measurement data 2025-12

application/x-compressed63 MB
Frequency measurement data 2025-11

application/x-compressed63 MB
Frequency measurement data 2025-10

application/x-compressed64 MB
Frequency measurement data 2025-09

application/x-compressed63 MB
Frequency measurement data 2025-08

application/x-compressed64 MB
Frequency measurement data 2025-07

application/x-compressed65 MB
Frequency measurement data 2025-06

application/x-compressed63 MB
Frequency measurement data 2025-05

application/x-compressed63 MB
Frequency measurement data 2025-04

application/x-compressed64 MB
Frequency measurement data 2025-03

application/x-compressed64 MB
Frequency measurement data 2025-02

application/x-compressed57 MB
Frequency measurement data 2025-01

application/x-compressed63 MB

Dataset

Unit

Hz

Data period

0,1 s

Dataset ID

339

Status

Active

Valid from

-

Additional information

Contact persons

Elisa Alanen

Organization

Fingrid

License

Creative Commons Attribution

Keywords

Frequency

Content groups

Other