The Nordic Transmission System Operations have decided to switch from 1 hour to 15 minutes imbalance settlement period.

The go-live date for the 15-minute imbalance settlement period (ISP) will be on Monday May 22, 2023 at 00.00 CET, at the beginning of an imbalance settlement period.

The transition to 15-minute imbalance settlement also means that it will be possible to trade with 15-minute products in the Nordic intraday and balancing markets. Energy metering will, to some extent, move to 15-minute intervals, based on local legislation/regulation.

Moving to higher time resolution in the Nordic imbalance settlement will mainly affect the following aspects of the imbalance settlement:

  • Changes in data exchange – quarterly resolution for reporting
  • Calculation of imbalances will be done for each 15 min ISP
  • Settlement data may be viewed additionally with 15-minute resolution

For additional information, please see the webinar on the impact on imbalance settlement and its processes and dataflows

A commissioning plan for market participants will also be provided at the beginning of 2022.

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