On Monday, April 28, at Barcelona Railway Station, as well as at many other train stations in Spain, Portugal and France, thousands of people waited in vain for the unprecedented blackout to end and they could board trains. The power supply, and even then only by 90%, was restored only the next day. Not only train stations, but also airports did not work for a day, there were interruptions in banking services, mobile communications, Internet, house lighting, and public transport. On Tuesday, Spanish Prime Minister Pedro Sanchez thanked his fellow citizens for their steadfastness. It follows from his words that the causes of the blackout have not yet been established. The prime minister assured only that the version of a large-scale cyberattack can definitely be dismissed. The Spanish state Meteorological Agency also denied the suggestion made by the Portuguese electricity grid operator that the blackout was caused by some rare atmospheric phenomenon in a neighboring country. According to forecasters, there were cloudless skies over Spain on Monday without any weather anomalies.