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© Getty Images
0 / 30 Fotos
Mysterious network issue
- Government leaders in Spain and Portugal scrambled to find a solution to a mysterious network issue that left both countries in the dark.
© Getty Images
1 / 30 Fotos
El cero
- Spain’s electric network, Red Eléctrica de España (REE), said the nation faced “el cero” – the zero, as authorities rushed to rescue trapped people.
© Getty Images
2 / 30 Fotos
Mass power outage
- Redes Energéticas Nacionais (REN), the Portuguese electric network, noted that the mass power outage occurred at 11:33am Western European summer time.
© Getty Images
3 / 30 Fotos
Restoring power
- By mid-afternoon, the Spanish operator, reported that power was beginning to be restored to several areas of the Iberian Peninsula.
© Getty Images
4 / 30 Fotos
Travelers confused
- Flights, trains, and most transportation was disrupted in Spain and Portugal yesterday, leaving travelers confused and at the whims of an eventual restoration of power.
© Getty Images
5 / 30 Fotos
Public transportation
- Public transportation was halted as people waited in long lines attempting to return to their homes.
© Getty Images
6 / 30 Fotos
State of emergency
- Spain's President Pedro Sanchez announced a state of emergency in eight regions.
© Getty Images
7 / 30 Fotos
Imbalance in temperatures
- Portuguese prime minister, Luís Montenegro, blamed the issue on a “rare atmospheric phenomenon” had caused an imbalance in temperatures.
© Getty Images
8 / 30 Fotos
Temperature variations
- REN announced: “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’."
© Getty Images
9 / 30 Fotos
Failures between electrical systems
- Due to these variations, according to network operators, there were failures between electrical systems, leading to disruptions throughout the European electricity network.
© Getty Images
10 / 30 Fotos
Bruegel
- According to Bruegel, a Brussels think tank, the system faced “cascading disconnections of power plants," when the grid frequency of the grid dropped below 50Hz, the European standard.
© Getty Images
11 / 30 Fotos
No evidence of cyber-attack
- Former Portuguese prime minister and current European Council president, António Costa, cautioned the rumor mill, noting “there is no evidence that it was a cyber-attack."
© Getty Images
12 / 30 Fotos
Security issue
- While there are many theories about what caused the outage, the nations continue without certainty. Spain’s national security council convened to assess the possible causes of the outage.
© Getty Images
13 / 30 Fotos
Spain
- Overnight, electricity was restored in several areas, reporting that 99.16% of power had been returned to Spain as of April 29, 2025, morning.
© Getty Images
14 / 30 Fotos
Portugal
- Portugal's grid operator reported that approximately 6.2 million out of 6.5 million households also had power again by the next morning.
© Getty Images
15 / 30 Fotos
Spain suffers massive ongoing blackout
- Yet, the effects of the outage continue to impact the nations as operators attempt to configure all the travel disruptions from the outage.
© Getty Images
16 / 30 Fotos
Airport disruption
- Airports were operating on backup generators, but about 200 flights were canceled, mostly out of Lisbon, yesterday.
© Getty Images
17 / 30 Fotos
Spain and Portugal hit by widespread power blackouts
- The outage also caused many flights from Madrid, Barcelona, and Seville, to be cancelled or delayed.
© Getty Images
18 / 30 Fotos
Sudden blackout
- The sudden blackout affected tens of millions of people for hours, leaving many without access to basic essentials, Wi-Fi or mobile network.
© Getty Images
19 / 30 Fotos
Analysis ongoing
- The Spanish Prime Minister noted that the Spain is “analyzing all the potential causes without discarding any hypothesis.”
© Getty Images
20 / 30 Fotos
Foul play
- Portugal’s National Cybersecurity Centre noted there was no evidence that the outage resulted from a cyber-attack.
© Getty Images
21 / 30 Fotos
Serious episode
- Executive vice president of the European Commission, Teresa Ribera, noted the outage “one of the most serious episodes recorded in Europe in recent times”.
© Getty Images
22 / 30 Fotos
State of emergency ongoing
- Despite a restoration of power throughout Spain, the nation remains in a state of emergency.
© Getty Images
23 / 30 Fotos
Medical services
- Medical services were severely impacted in some parts of Spain and Portugal. Without generators, some people lost access to critical devices like insulin storage, dialysis, and oxygen.
© Getty Images
24 / 30 Fotos
Tens of thousands rescued
- In Spain, about 35,000 passengers stranded on public transportation were rescued by emergency workers.
© Getty Images
25 / 30 Fotos
France partially blamed amidst chaos
- Spain's REE blamed the outage on a connection failure with France for triggering a cascading grid failure.
© Getty Images
26 / 30 Fotos
REE commentary
- "The extent of the loss of power was beyond what European systems are designed to handle and caused a disconnection of the Spanish and French grids, which in turn led to the collapse of the Spanish electric system," Eduardo Prieto of REE said.
© Getty Images
27 / 30 Fotos
Forced to retire home early
- Many in Spain and Portugal were forced to retire home early from work, with many filling the streets during the day hours and using candlelight in the evening.
© Getty Images
28 / 30 Fotos
Rare in Europe
- Power outages like this are rare in Europe. In 2003, a failure of a hydroelectric power line between Italy and Switzerland provoked a similar outage across Italy. Sources: (Reuters) (The Guardian) (EuroNews) See also: What to do during a power outage
© Getty Images
29 / 30 Fotos
© Getty Images
0 / 30 Fotos
Mysterious network issue
- Government leaders in Spain and Portugal scrambled to find a solution to a mysterious network issue that left both countries in the dark.
© Getty Images
1 / 30 Fotos
El cero
- Spain’s electric network, Red Eléctrica de España (REE), said the nation faced “el cero” – the zero, as authorities rushed to rescue trapped people.
© Getty Images
2 / 30 Fotos
Mass power outage
- Redes Energéticas Nacionais (REN), the Portuguese electric network, noted that the mass power outage occurred at 11:33am Western European summer time.
© Getty Images
3 / 30 Fotos
Restoring power
- By mid-afternoon, the Spanish operator, reported that power was beginning to be restored to several areas of the Iberian Peninsula.
© Getty Images
4 / 30 Fotos
Travelers confused
- Flights, trains, and most transportation was disrupted in Spain and Portugal yesterday, leaving travelers confused and at the whims of an eventual restoration of power.
© Getty Images
5 / 30 Fotos
Public transportation
- Public transportation was halted as people waited in long lines attempting to return to their homes.
© Getty Images
6 / 30 Fotos
State of emergency
- Spain's President Pedro Sanchez announced a state of emergency in eight regions.
© Getty Images
7 / 30 Fotos
Imbalance in temperatures
- Portuguese prime minister, Luís Montenegro, blamed the issue on a “rare atmospheric phenomenon” had caused an imbalance in temperatures.
© Getty Images
8 / 30 Fotos
Temperature variations
- REN announced: “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’."
© Getty Images
9 / 30 Fotos
Failures between electrical systems
- Due to these variations, according to network operators, there were failures between electrical systems, leading to disruptions throughout the European electricity network.
© Getty Images
10 / 30 Fotos
Bruegel
- According to Bruegel, a Brussels think tank, the system faced “cascading disconnections of power plants," when the grid frequency of the grid dropped below 50Hz, the European standard.
© Getty Images
11 / 30 Fotos
No evidence of cyber-attack
- Former Portuguese prime minister and current European Council president, António Costa, cautioned the rumor mill, noting “there is no evidence that it was a cyber-attack."
© Getty Images
12 / 30 Fotos
Security issue
- While there are many theories about what caused the outage, the nations continue without certainty. Spain’s national security council convened to assess the possible causes of the outage.
© Getty Images
13 / 30 Fotos
Spain
- Overnight, electricity was restored in several areas, reporting that 99.16% of power had been returned to Spain as of April 29, 2025, morning.
© Getty Images
14 / 30 Fotos
Portugal
- Portugal's grid operator reported that approximately 6.2 million out of 6.5 million households also had power again by the next morning.
© Getty Images
15 / 30 Fotos
Spain suffers massive ongoing blackout
- Yet, the effects of the outage continue to impact the nations as operators attempt to configure all the travel disruptions from the outage.
© Getty Images
16 / 30 Fotos
Airport disruption
- Airports were operating on backup generators, but about 200 flights were canceled, mostly out of Lisbon, yesterday.
© Getty Images
17 / 30 Fotos
Spain and Portugal hit by widespread power blackouts
- The outage also caused many flights from Madrid, Barcelona, and Seville, to be cancelled or delayed.
© Getty Images
18 / 30 Fotos
Sudden blackout
- The sudden blackout affected tens of millions of people for hours, leaving many without access to basic essentials, Wi-Fi or mobile network.
© Getty Images
19 / 30 Fotos
Analysis ongoing
- The Spanish Prime Minister noted that the Spain is “analyzing all the potential causes without discarding any hypothesis.”
© Getty Images
20 / 30 Fotos
Foul play
- Portugal’s National Cybersecurity Centre noted there was no evidence that the outage resulted from a cyber-attack.
© Getty Images
21 / 30 Fotos
Serious episode
- Executive vice president of the European Commission, Teresa Ribera, noted the outage “one of the most serious episodes recorded in Europe in recent times”.
© Getty Images
22 / 30 Fotos
State of emergency ongoing
- Despite a restoration of power throughout Spain, the nation remains in a state of emergency.
© Getty Images
23 / 30 Fotos
Medical services
- Medical services were severely impacted in some parts of Spain and Portugal. Without generators, some people lost access to critical devices like insulin storage, dialysis, and oxygen.
© Getty Images
24 / 30 Fotos
Tens of thousands rescued
- In Spain, about 35,000 passengers stranded on public transportation were rescued by emergency workers.
© Getty Images
25 / 30 Fotos
France partially blamed amidst chaos
- Spain's REE blamed the outage on a connection failure with France for triggering a cascading grid failure.
© Getty Images
26 / 30 Fotos
REE commentary
- "The extent of the loss of power was beyond what European systems are designed to handle and caused a disconnection of the Spanish and French grids, which in turn led to the collapse of the Spanish electric system," Eduardo Prieto of REE said.
© Getty Images
27 / 30 Fotos
Forced to retire home early
- Many in Spain and Portugal were forced to retire home early from work, with many filling the streets during the day hours and using candlelight in the evening.
© Getty Images
28 / 30 Fotos
Rare in Europe
- Power outages like this are rare in Europe. In 2003, a failure of a hydroelectric power line between Italy and Switzerland provoked a similar outage across Italy. Sources: (Reuters) (The Guardian) (EuroNews) See also: What to do during a power outage
© Getty Images
29 / 30 Fotos
'It’s going to happen again': Expert warns of more blackouts after Europe’s power crisis
Spain’s energy infrastructure may be too outdated to handle rising output, expert says
© Getty Images
Spain’s aging power grid may not be able to handle the country’s growing energy output, energy expert Carlos Cagigal warned on Spanish television, adding that the April 28 widespread blackout is likely a sign of more to come.
“People need to prepare, because it’s going to happen again in the coming months,” he said. While the exact cause remains under investigation, Cagigal pointed to unstable voltage and sudden power surges as likely triggers behind the collapse. Without large-scale energy storage, which he estimates could take two years to implement, Spain may remain vulnerable to future outages.
Several European nations struggled on April 28 to cope with massive power outages that plunged parts of the continent into darkness. Chaos erupted in Spain, Portugal, and parts of France, as authorities scrambled to restore power amidst a severe blackout. Homes, offices, streetlights, public transportation, and more suddenly lost power, while authorities attempted to understand what had happened and, more importantly, how to fix it. Rumors of a potential security breach, namely a cyberattack, caused panic among citizens who rushed to fuel their cars and stock up on essentials, reminiscent of the COVID-19 lockdowns.
Click through this gallery for a closer look at the day part of Europe was literally left in the dark.
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