The last island-wide blackout occurred on New Year’s Eve. Puerto Rico has struggled with chronic outages since September 2017 when Hurricane Maria pummeled the island as a powerful Category 4 storm, razing a power grid that crews are still struggling to rebuild.

Puerto Rico power company scrambles to restore electricity as businesses close and hospitals rely on generators amid latest infrastructure failure.

Genera PR, the company that generates power on the island, said the "massive power outage" was due to the shut down of all generating plants.