NGCP releases current power state in Mindanao PDF Print E-mail
Wednesday, 20 April 2011 16:41

The National Grid Corporation of the Philippines (NGCP) clarified yesterday that the recent spate of power interruptions experienced in Mindanao was caused by unplanned shutdown of some power generating plants.

Milfrance Capulong of NGCP corporate affairs department said approximately 100 megawatts (MW) of power was taken out of the Mindanao grid due to the unexpected unavailability of Agus 6 (Units 2 and 4), Agus 7 (Units 1 and 2), and Agus 1 (Unit 1).

Further, Capulong said the following plants are operational but derated by the owners and operators: Agus 1 (30 MW), Agus 2 (90 MW), Agus 5 (50 MW), Agus 6 (100 MW), Western Mindanao Power Corp. (90 MW), Southern Power Philippines Corp. (40 MW).

She said in instances when there is a deficiency in the power supplied by the different power plants, NGCP implements load shedding based on an allocation matrix load prepared by the generators or power plants themselves. In Mindanao, this load shedding matrix is from the National Power Corporation (Napocor).

The load shedding is then implemented across the Mindanao grid through the area control centers of NGCP in Cagayan de Oro, General Santos, Davao, Butuan, Zamboanga and Iligan.

The power interruptions actually experienced by the end-consumers in the household levels will depend on the implementation scheme of the particular distribution utility in the area, she said.

NGCP, she added, does not own, operate or shut down power generating plants but as the system operator, it has information on the available capacity, system peak and reserves in the power system.

Capulong said power curtailment is being implemented grid-wide based on the matrix for April 2011 provided by the Napocor-Mindanao Generation-Power Sector Assets and Liabilities Management (PSALM).

Napocor is conducting maintenance check-up in some of the plants this week as power demand is low during the Holy Week, she added.