There seems to be a lot of uncertainty and speculation as to the cause of the peninsula-wide power cuts in Spain and Portugal:
Article: Portugal's grid operator, RNA, gave a rather complicated explanation for Monday's massive power outage which left much of the Iberian Peninsula without power.
It blamed a rare atmospheric phenomenon which caused "oscillations" and "vibrations" in the high power lines, which in turn resulted in "synchronisation failures".
REN said: "Due to extreme temperature variations in the interior of Spain, there were anomalous oscillations in the very high voltage lines (400 kV), a phenomenon known as 'induced atmospheric vibration'. These oscillations caused synchronisation failures between the electrical systems, leading to successive disturbances across the interconnected European network."
but
Article: The weather in Spain on Monday was calm and sunny with average spring temperatures.
According to an expert [the ITV reporter] spoke to, it would be "really really weird" for this weather to have caused - or 'induced atmospheric vibrations'.
But also:
Article: A fire, reported to be in Southern France between Perpignan and eastern Narbonne, which damaged a extra-high-voltage power line, has also been identified as a possible cause by REN.[21] France's Réseau de Transport d'Électricité (RTE), the nationwide transmission system operator in charge of maintaining said power line, declared on its official X account that there were no fires in the area.[22]
The Spanish cybersecurity agency Incibe was reported to be investigating the possibility that a cyberattack caused the incident.[23][24]
With the continued uncertainty, there are lots of conspiracy theories and other theories out there.
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