Spain Outage Was First of Its Kind, Worst in Decades, Group Says

The blackout that left Spain without power last April was the most severe incident to hit European networks in two decades and the first of its kind, according to the European Network of Transmission System Operators for Electricity. Damian Cortinas, the organization’s chairman, said the April 28 outage was Europe’s first blackout linked to cascading voltages. More than 50 million people lost electricity for several hours.

A preliminary report published in July attributed the outage to a chain of power generation disconnections and abnormal voltage surges. The final assessment will be released in the first quarter of next year and presented to the European Commission and member states. A government probe in June found that grid operator Red Electrica failed to replace one of 10 planned thermal plants, reducing reserve capacity. Spain spent only $0.3 on its grid for every dollar invested in renewables between 2020 and 2024, the lowest ratio among European countries and well below the $0.7 average.