Visayas grid under yellow alert on September 28, 2026 --NGCP

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The Visayas grid will again be placed under yellow alert on Monday, September 28, due to tight energy reserves, the National Grid Corporation of the Philippines (NGCP) said.

In an advisory, the NGCP said the yellow alert status will be in effect between 5 p.m. to 7 p.m.

The grid is currently running on an available capacity of 2,572 megawatts (MW) although the peak demand is 2,374 MW.

The yellow alert status declaration is due to the unavailability of Visayas' large coal plants: Panay Energy Development Corporation Unit 3, KEPCO SPC Power Corporation Unit 2, and Therma Visayas Inc. Unit 1. The said plants were shut down at 4:34 a.m.

Meanwhile, 14 plants are on forced outage on September, three plants since August, two plants since June, six plants since May, three plants since 2025, two plants since 2024, two plants since 2023, and one plant since 2021. There are also 15 plants are running on derated capacities, for a total of 928.3MW unavailable to the grid.

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

To address the thinning energy reserves in the Visayas grid, the Department of Energy (DOE) earlier ordered the NGCP to install over 250 megawatts of battery energy storage system.

The DOE is also mulling to tap liquid fuel facilities to help power up the grid. —Vince Angelo Ferreras/KG, GMA News