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Yellow alert raised over Luzon, Visayas

THE National Grid Corp. of the Philippines (NGCP) has placed the Luzon and Visayas grids on yellow alert on Monday, with more than 2,000 megawatts (MW) unavailable to the grid.

In an advisory early Monday, the NGCP said that the Luzon grid was on yellow alert between 2 p.m. and 4 p.m.

Available capacity was 13,867 MW while peak demand hit 13,125 MW.

The NGCP said that three power plants have been on forced outage since last year. Three power plants have been out between January and March, 13 power plants between April and May, and four plants on derated capacity.

A yellow alert is issued when the operating margin is insufficient to meet the transmission grid’s contingency requirement.

The Visayas grid was on yellow alert between 1 p.m. and 9 p.m.

The grid operator said that peak demand was 2,575 MW, against available capacity of 2,675 MW.

One power plant has been on forced outage since 2022, two since 2023, and two between January and March.

The grid operator also said that 11 power plants have not been operating between April and May while seven have been derated.

Some 553.4 MW was unavailable to the grid. — Sheldeen Joy Talavera