A magnitude 6.9 earthquake near Bogo City, Cebu caused a widespread power outage in Eastern Visayas provinces, including Biliran, Leyte, Southern Leyte, Samar, Eastern Samar, and Northern Samar.
The tremor, which struck at 12:27 a.m. Wednesday, disrupted electricity to eleven electric cooperatives in the region.
The National Grid Corporation of the Philippines (NGCP) reported that the quake caused the Luzon-Visayas link to trip, separating the Leyte-Samar grid from the Cebu-Negros-Panay-Bohol grid.
Damage to NGCP's Daanbantayan substation and the tripping of four 230-kV transmission lines in the Visayas were also reported.
Several power plants in Cebu and the Negros Island Region went offline, resulting in an isolated load of 641 megawatts.
Inspections and restoration work by NGCP will commence once it is deemed safe.
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