Puerto Rico's electric utility finally restored power back to all of its customers on the entire island on Tuesday, 328 days after Hurricane Maria hit last September.

The hurricane plunged 1.5 million homes and businesses in the dark for months.

(Reuters) - Puerto Rico's electric utility said it completed restoration of power to all of its customers on Tuesday, more than ten months after Hurricane Maria left 1.5 million homes and businesses in the dark.

In a message on twitter, the Puerto Rico Electric Power Authority (PREPA) said it had restored power to the last customer that was still offline, a family in Ponce, on the island's southern side.

Hurricane Maria devastated the island last September and the bankrupt utility struggled to restore service to its customers.