Stress tests potentially run on the Spanish grid with no prior notification during the blackout of 28 April 2025

Question for written answer E-002456/2025 to the Commission Rule 144 Pilar del Castillo Vera (PPE) Subject: Stress tests potentially run on the Spanish grid with no prior notification during the blackout of 28 April 2025 In the light of the blackout that affected the Iberian Peninsula and parts of France on 28 April 2025, a number of technical sources have suggested that one of the scenarios is that the incident could have been linked to deliberate tests on the Spanish electricity system to assess its resilience when faced with unmanageable peaks in renewable energy generation. With this in mind: 1. Was the Commission made formally aware of, or did it receive any official communication from the Spanish Government about, the possibility of the incident being linked to a stress test on the national grid? 2. If so, does the Commission consider Spain to have complied with the obligation of prior notification and cooperation laid down in Article 15 of Regulation (EU) 2019/941 on risk-preparedness in the electricity sector? Submitted: 18.6.2025 PE775.240v01-00