The blackout investigation reached a somber milestone with confirmation of the first fatality in Portugal. The energy minister López rejected allegations that renewable energy caused the crisis, suggesting "economic interests" were behind such claims. Minister Bolaños controversially stated the government "is not in a hurry" to determine the cause.

Madrid's May 2nd celebrations became a political battlefield, with President Ayuso using the occasion to challenge Sánchez, declaring "no one can shut us down" in reference to the power outage. Opposition leader Feijóo escalated pressure by demanding an international audit.

Spain and Portugal established a joint monitoring group to identify causes and prevent future incidents. Meanwhile, Red Eléctrica's governance structure came under scrutiny, with reports noting its board lacks industrial engineers. Debate continued about nuclear energy policy, with critics warning plant closures would increase energy prices by 36%.