The Visayas grid was placed under yellow alert anew on Tuesday, June 2, as several major coal-fired power plant units remained unavailable, tightening power reserves amid rising electricity demand.
In an advisory, the National Grid Corporation of the Philippines (NGCP) said the yellow alert would be in effect from 3 p.m. to 9 p.m.
The grid’s available capacity stood at 2,542 megawatts (MW), while peak demand was projected to reach 2,412 MW, leaving a thin reserve margin that falls short of contingency requirements.
The alert comes as four generating units from key coal-fired power plants remain on forced outage: Units 1 and 2 of Therma Visayas Inc. (TVI), Unit 3 of Panay Energy Development Corporation (PEDC), and Unit 2 of KEPCO-SPC Power Corporation (KSPC).
NGCP reported that a total of 10 power plants are currently on forced outage, with nine units offline since May, one since March, three since 2025, two since 2024, two since 2023, and one since 2021.
In addition, 11 smaller power plants are operating at reduced capacities, bringing the total unavailable capacity in the Visayas grid to 996.4 MW.
Energy officials on Monday said coordinated measures are underway to address the supply situation, including the deployment of power barges and generator sets, to help ensure sufficient electricity supply across the Visayas.
A yellow alert is issued when operating reserves fall below the required contingency level, signaling a tighter power supply situation but not necessarily leading to service interruptions. *PNA
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