Iberian blackout cuts power and connectivity for millions
A grid collapse at about 12:33 CEST cut electricity across mainland Spain and Portugal for around ten hours, halting trains, ATMs and mobile networks; Cloudflare saw internet traffic fall by up to 90% in Portugal.
- Service
- Spain and Portugal power grid
- Date
- 28 April 2025
- Cause
- Power / grid
- Duration
- 10 hours
- Status
- resolved
- Severity
- critical
- Region
- Global
- Source
- Offshore Technology ↗
Cite this
Nuffield Consulting, “Iberian blackout cuts power and connectivity for millions”, The Daily Tech Wire outage & breach log, 28 Apr 2025. https://techwire.nuffieldconsulting.com/incidents/2025-04-28-spain-and-portugal-power-grid-outage/ (retrieved 15 Nov 2026).
This entry summarises public reporting. Please also cite the original source: Offshore Technology, https://www.offshore-technology.com/news/spain-portugal-power-outage/.
Related incidents
- 22 Apr 2025M&S cyber attack halts online orders for weeksMarks & Spencer · outage · Cyberattack
- 30 Apr 2025Co-op shuts IT systems after attempted hackCo-op · outage · Cyberattack
- 25 Apr 2025Cyber attack hits Nova Scotia Power systemsNova Scotia Power · outage · Cyberattack
- 16 Apr 2025Zoom down for about two hours after domain blockedZoom · outage · DNS · 2 hours
- 16 Apr 2025Spotify outage hits users worldwideSpotify · outage · Unknown