Overview

• The April 28 blackout left the entire Iberian Peninsula without power for hours, with over 2.2 gigawatts of electricity lost.
• Spanish officials confirmed no evidence of a cyberattack on grid operator Red Eléctrica Española (REE).
• The outage was traced to three incidents in Granada, Badajoz, and Seville provinces, following two earlier grid oscillations.
• The automatic disconnection of the Iberian Peninsula from the European grid was triggered by these localized failures.
• Investigations by Spanish and EU authorities are ongoing, with no hypotheses ruled out regarding the root cause.