NGCP: Luzon, Visayas on yellow alert on Thursday, April 25

MANILA, Philippines — The National Grid Corporation of the Philippines (NGCP) placed Luzon and Visayas grids under yellow alert for several hours on Thursday as over 40 power plants were unavailable.

According to the grid operator, a yellow alert is issued “when the operating margin is insufficient to meet the transmission grid’s contingency requirement.”

READ: Nationwide red, yellow alerts raised as power supply further thins 

Based on its latest advisory, NGCP will raise the yellow alert status in Luzon from 1 p.m. to 5 p.m. and 7 p.m. to 11 p.m.

The grid operator reported that 1,424.3 megawatts are unavailable in the region after 19 areas were forced outage, while one was running on derated capacity.

READ: Still not enough power for Luzon, says NGCP

Visayas, on the other hand, will be under yellow alert during the following hours:

• 1 p.m to 4 p.m.
• 6 p.m. to 7 p.m.
• 8 p.m. to 9 p.m.

NGCP said 670.8 megawatts were unavailable in Visayas since 24 were offline, while 12 others are running on derated capacities.