What caused the blackout in Spain and Portugal and did renewable energy play a part?

Spain and Portugal experienced one of Europe's worst blackouts, affecting 55 million people over nearly a day. Despite their high reliance on renewables—solar and wind energy—initial reports linked the blackout to an "unusual atmospheric phenomenon." However, experts argue that renewables likely weren’t the cause, as grid systems with low inertia are more susceptible to sudden disruptions. The outage stemmed from engineering issues, including potential solar power loss or transmission problems, highlighting the need for better grid infrastructure to handle increased renewable energy.