If someone wants a "quick and dirty" answers - there's presentation linked https://eepublicdownloads.blob.core.windows.net/public-cdn-container/clean-documents/

If someone wants a "quick and dirty" answers - there's presentation linked https://eepublicdownloads.blob.core.windows.net/public-cdn-container/clean-documents/Publications/2025/iberian-blackout/260318_Final%20report_press%20briefing%20PPT_Final.pdf https://eepublicdownloads.blob.core.windows.net/public-cdn-c... page 11 contains "Full root cause tree" - one image with all the high level info