SAN JUAN, Puerto Rico — Most Puerto Ricans faced another night of darkness Thursday as crews slowly restored electricity a day after a fire at a power plant caused the aging utility grid to fail and blacked out the entire island of 3.5 million people.

Nearly 370,000 of the 1.5 million homes and businesses served by the power utility had power back by late Thursday. Gov. Alejandro Garcia Padilla said he hoped more than half would be reconnected by Friday morning, adding that public school classes were canceled on Friday.

— The Miami Herald