The Visayas Grid will be placed under a yellow alert from 3:00 p.m. to 9:00 p.m. today, May 19, according to the National Grid Corporation of the Philippines (NGCP).

This marks the second straight day of grid alert in the region this week as thin power reserves continue to affect supply conditions across the Visayas during the six-hour period.

The Department of Energy (DOE) reported that the grid has an available capacity of 2,691 megawatts (MW) against a projected peak demand of 2,594 MW.

The NCGP said a total of 12 power plants have been on forced outage since May 2026, while several others are running on limited capacity, leaving 846.3MW unavailable to the grid.

The DOE said that it is coordinating with the Independent Electricity Market Operator of the Philippines, the National Grid Corporation of the Philippines, and the Energy Regulatory Commission to monitor and manage the situation.

The operator grid said the yellow alert was triggered due to two main factors: the unavailability of large Visayas coal-fired power plants TVI 1, TVI 2, and PEDC 3, and the higher-than-expected system demand forecast.

The alert aims to expedite the restoration of affected generating facilities and ensure that all necessary measures are implemented to stabilize the grid.

A yellow alert is issued when power supply is insufficient to meet the contingency requirement of the transmission system.