On Monday, at 12:30 p.m. local time, the power went out. Trains, planes and traffic lights throughout Spain and Portugal suddenly stopped working.

There are reports of people being trapped in elevators, and real-time data from Google Maps shows traffic jams in big cities including Madrid and Barcelona as they become stuck. Major airports warn passengers of delays due to power outages. The reason for it is still unknown. The power outage is estimated to affect the entire Portugal and Spain and small areas of France.

"Traffic lights don't work. The streets are chaotic because there is an officer for every transit," said Gustavo, who lives in Madrid. “Because the pump is electric, water cannot reach apartments on the top of the building, and there are few open shops that take only cash.”

It's a nightmare for every electrical engineer, said Paul Cuffe, assistant professor at the School of Electrical and Electronic Engineering at the University of Dublin. "The reason we haven't had a widespread failure is because the system operator is very conservative and very active in using big safety profits to make sure that this doesn't happen," he said. Engineers plan to fail in grids or surfing in consumer demand, which can disrupt the stability of the power supply. “These things are unusual, but for power engineers, the potential threats that occur are always there.”

Power operator Hong Electric Operator Hong Electric Company said. Vasco, Galice, La Rioja, Asturias, Navarra, Léon. Eastern extremes; and Andalusia in the south.

Experts believe that depending on the region, it may take several hours to several days for the two countries to restore and run the grid. They say that while the grid is being backed up, emergency services may take precedence over things like stable internet connections.

Kuff said a series of good steps are taking place now. They will perform what is called "black boot" - a process that gradually reconnects the power station to form a grid of functions again. Power and demand must be balanced to avoid further power outages, which means that with the power stations going online, only a portion of the grid will be available online, and the country will gradually upgrade. He explained that there should be a team in the grid operators planning for this and that they have determined which generators are online first.

"You should expect every failure that can happen and you should survive any of them," Kuf said. From the control room, engineers should be able to tell which parts of the grid are certainly working, so they won't fly blindly, but it still takes time.

“Even with a completely healthy grid, it can take 12 hours or 16 hours to do the black start. You have to do this one by one, and it takes a long time. I’m sure that when we talk, trying to make all of this happen, the vans flock across the place.