Luzon grid alert raised to yellow, red; yellow in Visayas

MANILA, Philippines — The Luzon and Visayas grids were placed on yellow and red alerts on Tuesday, the National Grid Corporation of the Philippines (NGCP) said in its advisories.

In separate advisories as of 2 p.m., the NGCP said that the grids were placed under these statuses after some of its power plants operated on a reduced capacity.

The Luzon Grid will be under red status during the following period:

• 2 p.m.- 5 p.m.
• 8 p.m.- 9 p.m.

The Luzon Grid will be under the yellow status during the following period:

• 12 p.m. - 2 p.m. 
• 5 p.m. - 8 p.m.
• 9 p.m. - 12 a.m.

The Visayas Grid, on the other hand, will be under yellow status during the following period:

• 3 p.m. - 4 p.m.
• 6 p.m. - 7 p.m.

As of writing, the available capacity for the Luzon Grid is 13,277 MegaWatts (MW) while its peak demand is 12,869 MW.

The available capacity for the Visayas Grid, on the other hand, is 2,885 MW while its peak demand is 2,527 MW.

A red alert is declared when the power supply is insufficient to meet consumer demand, and the transmission grid's operational requirements cannot be fully met.

A yellow alert is announced when the operating margin is too narrow to adequately cover the transmission grid's contingency needs.