Massive power outage in Spain, Portugal leaves millions in dark

Cause likely not malicious; Red Electrica blames outage on "grid oscillation."

National grid operators in Spain and Portugal confirm that a massive electrical blackout has hit the Iberian Peninsula today, starting just a couple of minutes after 12:30 pm Central European Summer Time (10:30 am UTC, or about 6:30 am US Eastern Daylight Time). The outage appears to have resulted in near-total loss of electricity in Spain, Portugal, the Principality of Andorra, and at least some portions of southwest France.

The impacts are widespread and pervasive; in major cities like Madrid, trains are not running, airports are unable to operate, and businesses and schools have closed. Citizens are still able to use cellular networks to communicate so far (most cell towers and network operations centers have battery or generator backup systems).

Electrical demand curve from Red Eléctrica site showing the outage.

Credit: Red Eléctrica

Bloomberg energy reporter Akshat Rathi posted on Bluesky that Spanish grid operator Red Electrica claims the outage is due to "grid oscillation," a phenomenon that occurs when the system is unable to suppress oscillations that normally happen as sources and load enter and leave the system. Rathi quotes Bloomberg cybersecurity reporter Ryan Gallagher, noting that a cyber attack has been ruled out, and the fault is likely technical:

Initial investigations into the cause of the outages suggest a technical fault rather than a cyberattack, according to the European Union Agency for Cybersecurity (ENISA). "For the moment the investigation seems to point to a technical/cable issue," said a spokesperson for the agency in an emailed statement. "Nevertheless, ENISA is closely monitoring the situation and we are in contact with the relevant authorities at national and EU level."

Ars spoke directly to a reader named Tiago Carvalho, currently in Lisbon, Portugal. According to Carvalho, banks and supermarkets in Lisbon have been closed for hours, with a small number of shops and restaurants remaining open and accepting only cash. Tourists in Lisboa are still walking around enjoying the sunny weather, but locals are doing what they can to stock up, anticipating three or more days without power. Carvalho says only his 5G data connection is functional; when reached via Discord, he described the conditions like this:

After 3h with no power, locals are starting to talk with each other and share the news from battery-powered radio. Talks of maybe 3 days without power. Local groceries shops are full as people are increasing food stock. Cash only mostly (sometimes they get connection working on wireless terminal). Lots of honking because no traffic lights. People stuck in metro and trains from what I understand have been rescued. Airport closed. Supermarkets and banks mostly closed.

 

It’s a lovely day in Lisboa with sunny weather, but if this lasts, I fear things will complicate a bit as tourists will seek food, and restaurants have no power and no card payments.

This is a breaking story, and Ars will update it if new events come to light.

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