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Friday, March 29, 2024

Power supply turns tight as 8 plants shut down

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National Grid Corp. of the Philippines declared a yellow alert for the Luzon grid for three hours Wednesday, after eight power plants with a combined capacity of 3,000 megawatts went offline.

National Grid declared the yellow alert starting 10 a.m. because of thin power reserves in Luzon grid. The yellow alert  was lifted 2 p.m.

The grid operator said power generation capacity for Luzon fell to 9,196 MW, while demand reached 8,629 MW, following the tripping of San Gabriel power plant due to boiler feed pump trouble at 8:05 a.m.

The government was forced to run the second unit of the Malaya thermal power plant in Rizal with a capacity of 320 MW to augment the supply.

Around 150 MW was also transferred to the Luzon grid via the high-voltage direct current transmission line.

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Power plants that were on maintenance outage Wednesday included the Calaca Unit 2 (300 MW), Quezon Power Philippines (509 MW), Calaca U1 (300 MW), Masinloc U2 (300 MW), GN Power U1 (300 MW), GN Power U2 (300 MW), Kalayaan U1  (177MW) and Sta. Rita U1 (265 MW).

Aside from the 414-MW San Gabriel natural gas plant which suffered boiler feed pump trouble,  Kalayaan U2 (177 MW) also encountered excitation system trouble.

Energy Secretary Alfonso Cusi, Senator Sherwin Gatchalian, who chairs the Senate committee on Energy and officials of Manila Electric Co. expressed confidence that power supply would be adequate during the dry months.

Cusi said this would also depend on the maintenance schedule of the power plants and the anticipated temperature during the dry months.

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