ArticleNature communications2026
Excess mortality attributable to the 2025 Iberian Peninsula blackout.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Breathing in the Dark: Lessons from the April 2025 Blackout for Electricity-dependent Respiratory Patients.Open respiratory archivesArticle
Corrections and comments
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
On 28 April 2025, a widespread power outage affected mainland Portugal and Spain for around ten hours, causing major disruptions and eight reported deaths. Health impacts of blackouts range from direct effects, such as medical equipment failure, to indirect effects such as disrupted healthcare. Here we show that the 2025 Iberian blackout is associated with increased mortality in Spain, but not in Portugal. We find little evidence of excess mortality on the day of the event itself. In Spain, however, mortality rises over the next two days (+167 deaths; 95% credible interval: +28 to +300; +2.4% relative increase), particularly among women aged 85+. We also observe regional differences, but their drivers remain uncertain and may include variation in outage severity, underlying vulnerabilities, or local health-system and infrastructure conditions. These findings highlight the underestimated health burden of blackouts and the need for improved preparedness in a changing climate.
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