By Scott DiSavino (Reuters) -Puerto Rico power company Luma Energy said it had restored power to nearly half of its customers by early on Thursday after an island-wide blackout the day before. "Our crews will continue working throughout the day to ensure that 90% of customers have service restored within the next 48 hours,

After an islandwide power outage on April 16, almost all businesses and residences had electricity restored by Friday morning.