YELLOW ALERT: Visayas grid placed under yellow alert due to power supply shortage

Visayas electricity grid placed under yellow alert as cooling appliance usage drives up summer demand.

Consumers in the Visayas may face possible power interruptions after the National Grid Corporation of the Philippines placed the Visayas grid under a yellow alert on Sunday, May 18.

According to NGCP, the yellow alert will be in effect from 4 PM to 8 PM due to insufficient operating margin needed to meet the transmission grid’s contingency requirement.

As of 8 AM, the Visayas grid recorded an available capacity of 2,676 megawatts against a peak demand forecast of 2,513 megawatts.

NGCP said 13 power plants have been on forced outage since May 2026, while several others have remained offline since previous years. Eleven additional plants are also currently operating on derated capacities, resulting in a total of 852.9 megawatts unavailable to the grid.

The agency identified the unavailability of major coal plants TVI 1, TVI 2, and PEDC 3, along with high forecasted system demand, as among the primary factors behind the yellow alert declaration.

A yellow alert does not automatically mean a blackout, but it signals that power reserves have become thin and the grid may struggle if another major plant suddenly goes offline.

The alert comes as temperatures continue to rise across many parts of the country, driving up electricity consumption from households and businesses using cooling appliances.

 

 

According to NGCP, the yellow alert will be in effect from 4 PM to 8 PM due to insufficient operating margin needed to meet the transmission grid’s contingency requirement.

 

 

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