MANILA - Energy woes continue to hound the Philippines as the Luzon and Visayas power grids were again placed on Yellow Alert on Monday, April 29.

The National Grid Corp of the Philippines said the following alerts will be in effect at these times.

LUZON GRID

Yellow Alert

3 p.m. - 5 p.m.

8 p.m. - 11 p.m.

VISAYAS GRID

Yellow Alert

1 p.m. - 4 p.m.

6 p.m. - 8 p.m.

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

This means that rotating brownouts or localized power outages are possible.

The Luzon grid has an available capacity of 14,902 megawatts and a peak demand of 13,823 MW.

Four power plants are not operating, while one plant is operating on a lowered or derated capacity.

In the Visayas, one power plant went on an unplanned outage at around 10 a.m., and power shared through the Mindanao-Visayas interconnection also decreased.

This is the third week that the NGCP has raised alerts. Last week, the Department of Energy admitted that the situation is now a crisis. Meralco meanwhile warned that the worst was yet to come as rising temperatures cause a spike in the demand for electricity.