An Explosion in Northern Puerto Rico Causes a Blackout

CNN video screenshot

On Sunday night an explosion and fire at a power substation caused a blackout in parts of northern Puerto Rico, CNN reports.

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Puerto Rico's Electric Power Authority (PREPA) said on Twitter that 400 megawatts of power generation had been lost from switch 36210 of 115,000 volts.


The fire was caused by a mechanical failure and impacted sections of the capital San Juan, Trujillo Alto, Guaynabo, Carolina, Caguas, and Juncos, PREPA spokesman Carlos Monroig told CNN.

Power has been steadily restored for the majority of customers and more are expected to regain power Monday afternoon.  Sectors in the rural areas of Trujillo Alto, Río Piedras, and the Los Paseos area remain without service.

The power outage cost for employees working around the clock is estimated to cost $150,000, according to

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This is added to the $94 billion in damage caused by the Category 4, Hurricane Maria which destroyed two-thirds of the island's power distribution system.