Every power-generation facility in Puerto Rico unexpectedly went offline Wednesday afternoon, which caused an island-wide blackout, but many customers have had their power restored.

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

Puerto Rico was hit with an island-wide blackout Wednesday afternoon, officials said. According to a 3 p.m. update from LUMA Energy, the island’s private power company, the outage affects 74% of its 1.