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.

The entire island of Puerto Rico lost electricity Wednesday afternoon when the island’s power plants were knocked out of service, according to Luma Energy, which generates electricity in Puerto Rico, the latest breakdown of the territory’s faulty electric grid.

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.