At about 13:00, residents near Plaza Mayor found their homes without electricity and saw that traffic lights were also out. Residents in some parts of the area reported earlier interruptions from around noon, followed by a wider outage after 13:00. Supply returned progressively: some residents regained electricity around 15:00, while others remained without power until after 17:30. It was restored across the affected areas at about 18:00, according to residents and the distribution companies.
The medium-voltage fault affected homes and businesses in Vistillas and Bailén, as well as Puente de Segovia and the area around Plaza Mayor. Reports also included Calle de la Pasa and parts of Calle Segovia. Residents also reported problems at Plaza del Conde de Barajas, Plaza de San Miguel and Calle de la Morería. Naturgy operates in the area and classified the incident as a medium-voltage fault.
Representatives of the distributor said crews began work almost immediately to restore electricity. They described the area as «complicada» for «abrir y poder trabajar». El Confidencial reported that the interruption disrupted offices, with some workers leaving their workplaces while the outage continued.
Residents reported that supply in the Plaza Mayor area had been intermittent from 17:00 before returning at 17:30. Residents in Vistillas and Bailén later reported outages, as did those in Puente de Segovia. Residents in the affected neighbourhoods also described intermittent failures before the wider interruption.
At 14:14, one user wrote on X: «Vistillas, Puente y Bailén sin luz desde hace tres horas… Nadie nos dice nada… No funcionan antenas de telefonía tampoco porque no hay cobertura». The post said the outage had also disrupted mobile coverage. Another user replied: «Tampoco nada de luz por Los Mancebos y la Morería».
Madrid has also featured in coverage of the XXX Cumbre Iberoamericana, including a separate report on Icomos's review of work on Santiago’s gargoyles. Residents and the distribution companies reported that the power cut had ended across all affected areas at about 18:00.
