Traffic lights were back on, train and metro services slowly returned and schools reopened. Commuters battled with delays to get back to work after an outage that had left people stranded in lifts and cut off from phone contact with their families.
While Spanish grid operator REE on Tuesday ruled out a cyber attack as the cause, Spain's High Court said it would investigate whether the country's energy infrastructure had suffered a terrorist strike and Prime Minister Pedro Sanchez said his government had not ruled out any hypothesis.
REE said it had identified two incidents of power generation loss, probably from solar plants, in Spain’s southwest that caused instability in the electric system and led to a breakdown of its interconnection with France.
