On Sunday night an explosion and fire at a power substation caused a blackout in parts of northern Puerto Rico, CNN reports.
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.
— NotiUno 630 (@NotiUno) February 12, 2018
Puerto Rico tonight:
Explosion/fire at Monacillo station
Areas affected: municipalities in metro area, + Caguas & Juncos
Fire caused loss of units in Central San Juan & Palo Seco
Generation lost: 400 megawatts
Pics show site of fire
— David Begnaud (@DavidBegnaud) February 12, 2018
Me informan que el fuego ha sido controlado casi en su totalidad y ahora comienza fase de enfriamiento. No hay heridos reportados.
— Carmen Yulín Cruz (@CarmenYulinCruz) February 12, 2018
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 TuNoticiaPR.com.
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.