Group 1 - The CEO of Endesa, Jose Bogas, stated that the Spanish power grid operator REE lacked sufficient conventional plants in its energy mix planning, which contributed to the nationwide blackout on April 28 last year [1] - Bogas emphasized that Endesa's power plants adhered to regulations and did not disconnect improperly during the blackout event, indicating that similar conditions could lead to another blackout in the future [1]