On 18 August, the Expert Panel held its fifth meeting to advance the ongoing investigation into the 28 April 2025 blackout in Spain and Portugal. The data collection phase is now nearly complete, providing the foundation for a comprehensive factual report on the causes of this exceptional and unprecedented power system incident.

Although significant difficulties in collecting relevant and high-quality data from several DSOs and generation companies have delayed the initial, more ambitious schedule, the Expert Panel still plans to publish its factual report on 3 October – ahead of the legal deadline – subject to confirmation at its next meeting.

The ENTSO-E webpagededicated to the blackout now includes new information on the scope of both the factual and final reports. Further updates will be published after the Panel’s next meeting on 2 September.