Red, yellow alerts still up for Visayas, Mindanao grids this Friday

MANILA, Philippines – The red alert status for the Visayas grid and the yellow alert status for the Mindanao grid continued on Friday as several power plants remain unavailable and current capacity is inadequate to meet demand.

Visayas is on red alert from 5 p.m. to 9 p.m. and on yellow alert from 1 p.m. to 5 p.m. and from 9 p.m. to 10 p.m., the National Grid Corporation of the Philippines (NGCP) said in an advisory.

Available capacity is around 2,269 megawatts (MW), while peak demand is projected to reach 2,511 MW.

This is because the generating units of the major coal-fired plant, Units 1 and 2 of Therma Visayas Inc. (TVI), are still on forced outage.

Electricity imports from Mindanao are also low due to the maintenance shutdown of GNPower Kauswagan’s Unit 2 in Lanao del Norte and the emergency shutdown of its Unit 1 due to a boiler tube leak.

NGCP said 10 power plants in the Visayas are on forced outage this month, while around 20 have been out of service since 2021.

These generating units are on top of the 14 power plants operating at derated capacity to date, bringing the total loss to the grid to around 829MW.

READ: Tight power supply haunts Visayas, Mindanao on Aug. 14

For the Mindanao grid, available capacity is about 2,800MW while peak demand is expected to reach 2,619MW.

NGCP said 13 plants are on forced outage for August alone, while 13 others have been unavailable since 2024, and eight others are at derated capacities. Total capacity loss to the grid is around 661.4MW.

The grid operator issues a yellow alert when the operating margin is not enough to meet the transmission grid’s contingency requirement while a red alert is issued when the supply is inadequate to meet both the demand and the grid’s regulating requirement. (PNA)

Disclaimer: The comments uploaded on this site do not necessarily represent or reflect the views of management and owner of Cebudailynews. We reserve the right to exclude comments that we deem to be inconsistent with our editorial standards.