Warning issued for Luzon and Visayas power grids on May 23

The National Grid Corp. of the Philippines (NGCP) has announced that red alert status will be in effect for the Luzon and Visayas grids on Thursday due to several power plants either being offline or operating at reduced capacity.

According to the NGCP advisory posted on Facebook, the Luzon grid will be under red alert from 1 p.m. to 4 p.m. and from 6 p.m. to 10 p.m. Yellow alert will be in place from 12 noon to 1 p.m., 5 to 6 p.m., and 10 p.m. to 12 a.m. The available capacity in Luzon is 13,531 megawatts, with peak demand at 13,597 MW.

A total of 18 power plants in Luzon are on forced outage, with three outages since 2023, four between January and March 2024, and 11 between April and May 2024. Additionally, three power plants are running on derated capacities, resulting in 2,525.5MW of unavailable power to the grid.

In the Visayas grid, red alert will be raised from 2 to 4 p.m. and 6 to 7 p.m., with yellow alert from 12 noon to 2 p.m., 4 to 6 p.m., and 7 p.m. to 10 p.m. The available capacity is 2,588 MW, while peak demand is 2,537 MW.

The NGCP reported that 21 power plants in Visayas are on forced outage, with three operating on derated capacities, resulting in 553.1 MW of unavailable power to the grid.

The NGCP explained that a red alert status is issued when power supply is insufficient to meet consumer demand and the transmission grid’s regulating requirement. Under a yellow alert, the operating margin is not enough to meet the transmission grid’s contingency requirement.

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