The Department of Energy (DoE) is investigating the occurrence of a major power interruption in parts of Mindanao Thursday morning.
“We are validating the cause of the partial blackout in the Mindanao region and we are taking steps to secure the electricity services in Mindanao,” DoE Secretary Alfonso G. Cusi said.
“We are asking the NGCP and other stakeholders to explain the cause after further investigation to prevent the incident from happening again,” Cusi added.
According to the initial report of the National Grid Corporation of the Philippines (NGCP), a partial blackout occurred at 10:38 a.m. isolating Lanao del Norte, Lanao del Sur and the Zamboanga Peninsula and affecting parts of Butuan City, Cagayan de Oro, General Santos and Davao City.
The NGCP report stated that the tripping was caused by an “intentional toppling” of vegetation to the lines in between the Baloi-Agus 2 138kV transmission line which led NGCP to call the red alert status in the Mindanao Grid.
At 1:56 p.m. of the same day, the NGCP declared the Mindanao Grid at a “normal state” after all the lines were restored, except Agus 2-Baloi Lines 1 and 2.
In Zamboanga, Western Mindanao Power Corporation’s diesel-fired power plant was able to synchronize to the grid and the NGCP substation was able to return to normal operations.
The DoE assures the public that it has been monitoring the situation with the other energy stakeholders and will hold a conference to thoroughly discuss a comprehensive plan to secure the Mindanao Grid.