The power outage affecting Spain and Portugal has caused major disruptions, previously requiring measures such as initiating a black start. A black start involves disconnecting consumer loads and gradually re-energizing plants to restore power. Current measures to restore electricity are underway with local thermal plants and dams being activated. There have been concerns regarding the cause of the outage, including speculation about a possible cyberattack, though reports vary. Comparisons to past blackouts, such as the 2003 Northeastern blackout in the US, highlight the potential complexities involved in restoring power after a large-scale failure. It is advised to keep some cash at home during such outages as services may be disrupted.