Q: As I understand, market participants are advised not to use the min/max net position from NUCS for forecasting as they are not describing the actual situation/actual trades during an outage (page 20 in the handbook).

Instead, I assume, we are advised to use the information which can be downloaded via the button “download FB domain”?
If so, some examples / case studies would be nice to have here as well. Both for an individual outage and for the case of multiple outages occurring at the same time.

Answer Provided on December 12 2025:

You are correct in understanding that the minimum and maximum net positions are theoretical concepts related to the availability and unavailability of bidding zones. While they serve as good indicators of which BZs might be most impacted by an outage, the displayed magnitude on NUCS may not accurately reflect the reality of possible trades. The FB domain parameters provide additional valuable insights into domain sensitivities.

The disclaimers included on page 20 of the NUCS handbook aim to ensure that market participants do not mistake the sample calculations for real scenarios. These sample calculations have several limitations, such as not fully defined CNECs for the provided outages, which affects the informativeness of the displayed numbers. However, they illustrate the kind of information to expect on the platform.
An overview of the downloadable files via the NUCS API is provided in the Appendix to give you an idea of the document structure.

Thank you for your suggestion on the provision of those sample files as well. We will consider this for future updates.