Investment Plan Overview - Enel plans to invest approximately $63 billion in total, with a significant portion allocated to power grids in Spain through its subsidiary Endesa [1][2] - The investment in Spanish power grids is projected to be around 5.5 billion euros ($6.5 billion), representing about 21% of the total grid investment [2] Historical Context - This new investment marks a substantial increase from the previous allocation of roughly 4 billion euros by Endesa for power grid investments [3] - The decision comes in the wake of a massive blackout in Spain and Portugal on April 28, which has intensified discussions regarding the necessity and returns of investments in the power network [2] Regulatory Environment - Spain's competition watchdog has set the expected financial return for power grid activities at 6.58%, which is lower than the over 7% return that Spanish power utilities, including Endesa, have advocated for [3]