Occurred Jan 28, 2026, 4:00:00 AM UTC

First published Oct 15, 2026, 5:16:15 PM UTC · Last updated Oct 16, 2026, 2:20:00 AM UTC

Critical unplanned transmission outage: Spain–Portugal (Pereiros-Rio Maior 1)

Reported by ENTSO-E Serious European Transmission Outages

ENTSO-E reports a forced, critical unavailability on the Spain–Portugal transmission link, with no available capacity reported for the affected asset. The listed duration is 8,102 hours, with an expected end on December 31, 2026.

At a glance

Affected location: Pereiros-Rio Maior

Illustrative image: Latchmere Green electricity transmission station A major National Grid distribution centre of Berkshire and Hampshire. There are many power lines radiating from here making this the dominant feature of the square. — Graham Horn/Wikimedia Commons, CC BY-SA 2.0

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Why it matters

The report identifies a critical outage on a cross-border transmission asset.

Location

Highlighted marker: this event.

Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 6/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 6/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 4/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 5/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Urgency: 4/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

ENTSO-E Serious European Transmission Outages Critical unplanned transmission outage: Spain–Portugal (Pereiros-Rio Maior 1)ENTSO-E Transparency Platform, licensed under CC BY 4.0. Adapted by Planet Briefing. Usage terms

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