NGCP: Red, yellow alerts hoisted over Visayas grid on Friday, May 29, 2026

The Visayas grid will be placed under red and yellow alerts on Friday, May 29, due to forced outages and derated capacities of several power plants, the National Grid Corporation of the Philippines (NGCP) said.

In an advisory, a red alert will be raised from 6 p.m. to 7 p.m., while a yellow alert will be raised from 3 p.m. to 6 p.m. and from 7 p.m. to 10 p.m.

The Visayas grid is running at an available capacity of 2,562 megawatts (MW) against a peak demand of 2,542 MW.

The grid operator said 11 plants are on forced outage since May 2026, one plant since March 2026, three plants since 2025, two plants since 2024, two plants since 2023, and one plant since 2021, while 15 plants are running on derated capacities, for a total of 952.4MW unavailable to the grid.

It said the factors that contributed to the red alert declaration are the unavailability of Visayas' large coal plants TVI 1, TVI 2, PEDC 3, and KSPC 2, and high system demand forecast.

The NGCP said the Luzon and Mindanao grids are expected to operate under normal conditions.

A red alert is the highest alert level and is declared when the electricity supply is insufficient to meet demand since the reserves are depleted.

Meanwhile, a yellow alert is declared when the reserve power in the grid becomes low. While supply is still enough to meet current demand, it no longer reaches the required safety margin. —AOL, GMA News