ZAMBOANGA CITY – Power service was cut off in Zamboanga Peninsula and other parts of Northwestern Mindanao as two lines of the National Grid Corporation of the Philippines’ (NGCP) tripped off Monday.

Elizabeth Ladaga, NGCP public affairs officer for Western Mindanao, said the "partial system blackout" affecting Northwestern Mindanao areas occurred when Baloi-Aurora 138-KiloVolt (KV) and Agus 5-Aurora 138-KV lines simultaneously tripped at 10 a.m.

Seven electric cooperatives were affected: Zamboanga del Norte Electric Cooperative; Zamboanga City Electric Cooperative; Zamboanga del Sur Electric Cooperatives 1 and 2; Misamis Occidental Electric Cooperatives 1 and 2; and, Lanao del Norte Electric Cooperative.

“Loss of power was experienced in NGCP’s Aurora, Pitogo, Zamboanga, Polanco, and NagaMin sub-stations,” Ladaga said in a text message.

The Baloi-Aurora 138-KV line was re-energized at 10:27 a.m., she said, restoring transmission services to some affected areas.

“Line patrol along Agus 5-Aurora 138-KV line is ongoing,” she added.

In the city, power service by Zamcelco resumed shortly before noon.

On October 24, power service was disrupted in Zamboanga Peninsula and other parts of Northwestern Mindanao as the Tower No. 8 of the Baloi-Aurora 138-KV line in Barangay Bagumbayan, Kauswagan, Lanao del Norte, was toppled down by an explosion. (PNA)