- How engineers got power back on after Spain and Portugal’s blackout Euronews.com
- Spain will take ‘all necessary measures’ to prevent another blackout, says PM – live updates BBC
- Madrid Open players took blackout in stride, enjoyed time away from cellphones Yahoo Sports
- Did ‘induced atmospheric vibration’ cause blackouts in Europe? An electrical engineer explains the phenomenon The Conversation
- How Spain’s Success in Renewable Energy May Have Left It Vulnerable The New York Times