Severe Power Outage on Iberian Peninsula Halts Alcoa's San Ciprián Aluminum Operations

In April 2025, a severe power outage occurred on the Iberian Peninsula, causing infrastructure in Spain and Portugal to grind to a halt. The outage had severe consequences for Alcoa's San Ciprián aluminum plant, highlighting the vulnerability of aluminum production to power supply disruptions.

The power outage affected Alcoa's San Ciprián division, including an aluminum electrolysis plant with an annual production capacity of 228,000 mt and an alumina refinery with an annual production capacity of 1.5 million mt. This dual impact posed complex challenges for the emergency response team, which needed to manage the shutdown procedures for two different production processes simultaneously.

Alcoa immediately initiated a comprehensive assessment to evaluate the extent of the operational disruption and its potential financial impact. Company spokesperson Rodriguez stated, "Our top priority is to ensure the safety of our employees while minimizing damage to production facilities. Within minutes of detecting the power grid failure, we activated our emergency plan."