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RED ALERTS EXPOSE THIN POWER RESERVES IN VISAYAS AND MINDANAO
The National Grid Corporation of the Philippines placed both the Visayas and Mindanao grids under red alert on Friday because available supply was not enough to cover expected demand and the reserve needed to respond to trouble. Mindanao's red-alert window ran from 1 p.m. to 9 p.m. Visayas was scheduled from 3 p.m. to 10 p.m., followed by a yellow alert until 11 p.m.
In the Visayas, available capacity was 2,233 megawatts against peak demand of 2,504 MW. Eight plants were on forced outage, 17 others were operating below full capacity, and 815.8 MW was unavailable. Mindanao had 2,549 MW available against demand of 2,592 MW, with 784.5 MW unavailable. Large coal-unit outages and limited transfers between the island grids contributed to the shortage.
A red alert does not guarantee a blackout, but it means the system has no comfortable buffer. Distribution utilities may interrupt service if demand cannot be balanced with supply. Homes, clinics, water systems, stores, and communications are all affected when interruptions occur without enough warning.
WHAT TO WATCH
Watch evening advisories from NGCP and the local distribution utility for actual outage schedules, restored generating units, or extended alerts. Keep phones and essential lights charged, and treat any restoration estimate as provisional until the utility confirms that supply has stabilized.