The Visayas grid will be placed under a yellow alert anew on Wednesday, June 10, due to the continued unavailability of major power plants in the region and high electricity demand, according to the National Grid Corporation of the Philippines (NGCP).
In an advisory, the yellow alert will be in effect for five hours, from 3:00 p.m. to 8:00 p.m.
NGCP said the region's available grid capacity is projected at 2,556 megawatts (MW), while peak demand during the alert period is expected to reach 2,423 MW.
A total of 893.8 MW of generating capacity is currently unavailable to the grid.
The outages include seven power plants that went on forced outage in June 2026, eight plants that have been 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.
In addition, 11 power plants are operating at reduced or derated capacities.
The grid operator identified the unavailability of major coal-fired power plants—TVI 1, TVI 2, and PEDC 3—as among the key factors behind the yellow alert declaration. The agency also cited a high demand forecast across the Visayas region.
The DOE said it is actively coordinating with the Independent Electricity Market Operator of the Philippines (IEMOP), NGCP, the Energy Regulatory Commission (ERC), generation companies, and other industry stakeholders to expedite the safe restoration of affected facilities and implement available measures to stabilize the grid and protect consumers.
“The DOE continues to closely monitor the grid and provide the public with information as the situation develops,” the agency said in a statement.
A yellow alert is declared when the operating margin falls below the transmission grid's contingency requirement, indicating that power reserves are insufficient to adequately cover unexpected outages or disruptions in the system.
