European Imbalance Settlement Period Harmonisation

The European Network of Transmission System Operators for Electricity (ENTSO-E) is exploring proposals for harmonisation of the Imbalance Settlement Period (ISP) across Europe. The change is to cover all EU states plus Norway, Switzerland and Lichtenstein. The timescale of the proposed change is for a decision to be made by the end of 2016 with implementation by the end of 2019.

A cost benefit analysis of a range of options was conducted between December 2015 and 14th January 2016 to assess the likely impact of variations in the settlement period. The results of this exercise are due to be published in March. Based on the outcome of the CBA, a preferred option will be identified and the implementation process will commence in January 2017.

The options under consideration vary based on the country in which generators operate and the system interfaces they use. There are three ISP durations under consideration; 30 minutes, 15 minutes and 5 minutes. Dependant on the eventual decision, the impact in different European jurisdictions will vary greatly.

Considering the options tabled, Quorum’s Senior Business Analyst, Steve Taylor, concludes that the preferred option would be to move to a 15 minute imbalance settlement period across Europe, however until the outcome of the cost benefit analysis is known, and given the diversity that exists across Europe currently, Quorum will continue to monitor the situation.

For more information on this issue please go to:

or call Steve Taylor on 01740 625 514