I think it's ENTSO-E, here's their most recent report into an incident on 21 June 2024: https://www.entsoe.eu/publications/system-operations-reports/#the-final-

I think it's ENTSO-E, here's their most recent report into an incident on 21 June 2024: https://www.entsoe.eu/publications/system-operations-reports/#the-final-report-on-the-grid-incident-in-south-east-europe https://www.entsoe.eu/publications/system-operations-reports... For that incident, an expert panel was set up in July, the interim report was published in November, and the final report in Feburary 2025: so it'll take a few months.